Current Research at the University of Michigan Biological Station

Current Research at the University of Michigan Biological Station


Investigators Title Project Abstract Funding Agency
Francesca Cuthbert Piping Plover Research Program

The Great Lakes piping plover population was listed as federally endangered in 1986. Despite recent increases in size, the population remains extremely vulnerable to extinction from predation, demographic and environmental stochasticity and continued shoreline development and public recreation...

Michigan DNR
Alexandra Barnard Investigating reproductive isolation between Enallagma damselfly sister species

When two closely-related species look almost identical and breed in the same habitat at the same time, how are species boundaries maintained? Enallagma damselflies, which diverged relatively recently (Turgeon et al. 2005), present an opportunity to answer this question. ...

University of Oklahoma
Tyler Vitone Effects of elevated water temperatures on the attachment of zebra mussels (Dreissena polymorpha) to unionids

Increases in surface water temperatures of inland lakes are expected to continue as climate change progresses, and these changes will have many impacts on aquatic communities. In addition to climate change, many aquatic ecosystems are also threatened by introduced species. It is important to...

NSF-REU
Shelley Pressley Biogenic VOCs and Secondary Organic Aerosol at PROPHET - WSU 2014

We will be measuring isoprene fluxes, BVOC concentrations, and aerosol composition at the PROPHET tower. We are particularly interested in pollution stress, BVOC response, and connected changes to aerosol composition.

Department of Energy
Effects of Climate Warming on Macrophyte Beds

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Susan Cheng Effects of canopy structure and diffuse light on temperate forest carbon cycling

Forest ecosystems modify climate through vegetation-mediated interactions with the atmosphere.  However, current understanding of how atmospheric conditions change forest light environments and subsequent carbon processing is limited.  In particular, the impacts of clouds and aerosols...

University of Michigan Biological Station
University of Michigan Department of Ecology and Evolutionary Biology
Michigan Space Grant Consortium
Fabien Kenig Lacustrine record

The by-production of contaminants by industry since the mid 19th century led to accumulation of toxic compounds in lake sediments. Lake sediments will contain a record of the advent, use history, and effects of conditional restrictions of these contaminants. Investigations have shown that the...

Self
Mark Shields Genetics of a female-specific color polymorphism in the damselfly Enallagma hageni

Polymorphisms offer a great insight into our knowledge of evolutionary ecology. Many species of Odonates have a female-specific color polymorphism. The genetics of these polymorphisms has been demonstrated in only four species of Odonates. My research will use cross breeding to see if Enallagma...

University of Oklahoma
Freshwater algal flora of the Hawaiian Islands.

This project will create the first ever freshwater tropical algal flora from the only tropical biome within the United States. Given these are oceanic islands, additional questions relate to the origin and development of this flora, and the levels of endemism seen on the islands. At the...

NSF
Ryan Eustice Autonomous Underwater Vehicles

We plan to conduct engineering research trials of two autonomous underwater vehicles (AUVs). These vehicles are fully autonomous robotic submersibles that will be used to conduct optical and sonar mapping of the Douglas lake seafloor. We will be testing vehicle control algorithms, multi-vehicle...

National Science Foundation
Office of Naval Research
Beatriz Otero-Jiménez Effects of accelerated succession on the community of saproxylic beetles

We sampled saproxylic beetle composition in the Forest Accelerated Succession Experiment (FASET) and the Ameriflux tower. The former is a boreal forest where fist level succession trees have been girdled and the latter is an undisturbed forest. Our project looks to compare saproxylic beetle...

NSF
Elizabeth Stockton Rebuilding the forest following partial defoliation: Canopy controls on net primary production resistance to moderate disturbance

The mixed deciduous forests of northern Michigan are currently undergoing partial defoliation due to age-related senescence of bigtooth aspen (Populus grandidentata) and white birch (Betula papyrifera). The Forest Accelerated Succession Experiment (FASET) at the University of Michigan Biological...

NSF-REU
Shino Toma Biogenic Volatile Organic Compounds from Needles of White Pine (Pinus strobus) in Northern Michigan

Estimating the emission rates of biogenic volatile organic compounds (BVOC) is important to understand their effects on atmospheric chemistry, climate change and human health. In some tree species BVOC concentrations within leaves is proportional to the gas-phase emission rate. Measuring needle...

David Karowe Effects of elevated CO2 on plants, herbivores, and natural enemies

A series of studies to determine how elevated CO2 affects the nutritional quality and chemical defenses of plants (legumes and non-legumes), and how these changes affect higher trophic levels.

Physical characteristics of stimuli within sensory landscapes

Animals make many ecological decisions such as foraging, mating and predator avoidance based on the information they extract from the sensory signals in their environment. These stimuli can include visual signals, auditory signals, chemical signals, abiotic and biotic factors. Environmental...

Kathryn Frederick When the Wild Strawberries are in Bloom: Food Caching in Northern Michigan

Recreated traditional cache pits from the Late Woodland Period in an effort to better understand the pits that surround Douglas Lake and the people that once used them. I created an accurate scenario of ancient food caching, with an end result of crop viability after a winter of caching. I...

University of Michigan Biological Station
Daniel Keymer Functional, genetic, and taxonomic diversity of plant-fungal interactions along climatic gradients and their role in climate change driven species migrations

As part of a larger study, we wish to assess the role of soil fungi on future climate-driven range shifts of Juglans nigra. A greenhouse experiment will compare the fitness and elemental composition of seedlings grown under a number of scenarios with novel combinations of maternal seed...

National Science Foundation
Deborah Goldberg Mechanisms promoting plant invasions into wetlands

I will be continuing research on the mechanisms promoting plant invasions into wetlands. Questions include: Does hybridization between native and exotic species of promote invasiveness and what are the underlying mechanisms? What is the role of plant-soil feedbacks mediated through litter...

NASA
Reinhard Lakes-Harlan Acoustic orientation of a parasitoid fly

Okanagana rimosa is a common cicada of wooded habitats in Northern Michigan including areas close to the Biological Station. Males of the cicada O. rimosa produce calling sounds to attract female cicadas for reproduction. This signal is uniquely overheard by the parasitoid fly Emblemasoma...

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Daniel Katz Recruitment dynamics of tree species

The higher temperatures and carbon dioxide concentrations associated with climate change will alter growing conditions for plants. Although a variety of species and community responses have been predicted, one of the most widely expected results is a shift in species ranges as plants expand...

National Science Foundation
Moderage Dayani Waas Assessment of pollutant exposure of University of Michigan Biological Station forests in 2007

The chemical composition of the air is determined by the extent of compounds emitted, meteorological conditions, chemical transformations, and physical loss processes amongst compounds. At UMBS air masses primarily come from the north/northwest, south/southwest, east/southeast, west, and...

NSF-REU
Sebastien Dusanter Potential interferences during ambient measurements of OH and HO2

OH and HO2 measurements using laser-induced fluorescence: Because of its high reactivity, ambient concentrations of OH in the troposphere are extremely small (less than 1 pptv) and its chemical lifetime is very short (less than 1 second), making accurate measurements of OH challenging. We...

Nonpoint Source Interflow and Implications of Chemical Stimuli at the Benthic Level

Chemoreception is used by many different organisms in aquatic systems for a broad spectrum of ecological decisions.  In order to appreciate organismal behavioral responses to chemical stimuli, an understanding of the physical structuring of signals within their flow environment is warranted...

Alan Talhelm Photosynthesis in Mature Sugar Maple Forests Receiving Chronic Nitrogen Additions

In four mature northern hardwood forests in the northern lower and western upper Michigan, simulated atmospheric nitrogen (N) deposition (30 kg N ha-1 yr-1 as NaNO3 for 14 years) has increased aboveground tree growth, but has not affected canopy leaf biomass or leaf area index. In order to...

NSF-IGERT
David Zanatta Testing Hypotheses of Atlantic Coastal Origin for the Endangered Eastern Pondmussel, Ligumia nasuta, in the Great Lakes (Bivalvia: Unionoida)

This study will survey the genetic diversity of the Eastern Pondmussel in the Great Lakes region and reconstruct the migration path for the species after the latest ice age. Field collections will be taken from the Eastern Pondmussel’s several remaining habitats in the Great Lakes region and...

US Fish and Wildlife Service
Anna Harrison Hydrologic alterations in contaminated streams and the influence of the hyporheic zone in contaminant bioavailability

As the effects of climate change and watershed development compound upon aquatic ecosystems, biotic communities are forced to persist under altered flow regimes or perish. This research aims to explore how altered flows may impact benthic organisms, specifically in areas with contaminated...

Joel Heinen Assessing clear cuts for signs of deer and elk browse

I plan to assess recent clear cuts for seedlings and saplings that show signs of browsing by deer and elk. Trees will be identified and classed into height categories, and assessed for mortality/morbidity due to the effects of previous browsing.

Philip Myers Is Global Change Affecting Populations of Small Mammals in Northern MI?

Analysis of historical records of the distributions of a number of small mammal (rodent, shrew, opossum) species strongly suggests a pattern of replacement of northern species by southern species in the northern Great Lakes region. In a few well-studied communities in the Upper Peninsula of...

Quality control investigation into AmeriFlux and FASET tower sensors

Sensor equipment redundant with that outfitted on the AmeriFlux and FASET towers will be set up to evaluate the accuracy of data streams from those towers. While not a site review, these data are used within the AmeriFlux network to ensure usability of data streams.

Department of Energy
Philip Stevens Measurements of HOx radical chemistry in a changing forest environment

Reactions involving the hydroxyl radical (OH) and peroxy radicals, both the hydroperoxy (HO2) and organic peroxy radicals (RO2) play a central role in the chemistry of the atmosphere. In addition to controlling the lifetimes of many molecules important to issues of global climate change and...

National Science Foundation
Allyson Costa (nee Wright) Studies of canopy nitrogen chemistry and atmospheric inputs of nitrogen to the forest

Studying the nature, chemistry, and impact of atmospheric reactive nitrogen is essential in understanding the fate of NOx and its effect on the biosphere. This project worked to advance this knowledge by observing the sequestration of reactive nitrogen through deposition to soil at UMBS. Our...

NSF-IGERT
Idelle Cooper Signaling and selection in Calopteryx damselflies

Predicted changes in habitat area due to global climate change may reduce available habit for damselflies and bring together closely related species that were previously separate. These changes may affect reproductive isolation between species and the evolution of mating signals. Wing color...

NSF-BEACON
Quantification of Microcystin-LR among Fish Species in an Oligotrophic Lake: A Proposed Study in Little Traverse Lake, MI.

Cyanobacterial blooms are increasing in frequency, which consequently has led to increases in harmful cyanotoxins such as microcystin. Microcystin is harmful to human health if ingested, and exposure via fish consumption is a current route of interest (Ibelings and Chorus, 2007). Most research...

Heather Siersma Mapping the native and invasive haplotypes of Phragmites australis in northern Michigan

The biodiversity of the state of Michigan, already fragmented and reduced in the wake of widespread logging and development (Penskar et al, 2001), is now threatened by non-native plant invasion (Goldberg, 2007), including that of the M Eurasian haplotype of Phragmites australis. At the request...

Pavla Urbankova Diversity of the diatom genus Frustulia

Project aims to explore diversity and biogeography of the species from the diatom genus Frustulia. Species identification and delimitation uses integrative taxonomical approach, which combines molecular data, traditional and geometric morphometrics, and ecology inferred from in situ measurement...

The effects of macrophyte removal in the littoral zone of Douglas Lake

We propose to remove all macrophytes from a 50-100 foot section of the Douglas Lake littoral zone off of Grape Vine point. This will effectively create a modified habitat zone that could act as a baseline for research projects (sort of like an aquatic version of our burn plots). We will...

Clarisse Betancourt Hyphae response to higher and lower N availability in soils

Following experimental girdling of early successional aspen and birch trees at the University of Michigan Biological Station (UMBS) soil nutrient measurements have indicated that girdled plots show higher levels of nitrogen availability than un-girdled (control) plots. Understanding how soil...

UM-EEB
NSF
Paul Moore Crayfish Ecology and sociobiology

My lab studies two aspects of crayfish ecology. First, we are interested in the chemical ecology of crayfish. This includes chemical orientation behavior, predator-prey relationships, and foraging decisions. Second, we are interested in aggression, social behavior, and dominance hierarchies.

Coarse Woody Debris Stocks and Decomposition Rates in a North Temperate Forest.

N/A

National Science Foundation
Water Stress Effects on Plant Defenses and Plant-Mycorrhizal Interactions

I propose to explore the potential effects of changes in precipitation, as predicted by recent climate models, on plant defenses (in Asclepias species) and mutualistic interactions with arbuscular mycorrhizal fungi.

Brian Seok Oxidized carbon and nitrogen exchanges through seasonal snowpack at UMBS and their contribution to the annual ecosystem gas exchange budget

Snow cover significantly affects microbial activity in the soil underneath by influencing both respiration and soil nitrification and denitrification processes. My research will investigate how seasonal snowpack influences the forest ecosystem carbon and nitrogen budgets at the University of...

NSF-IGERT
David Meehan Soil carbon cycling under the FASET experiment

Forest soil respiration is a major flux of carbon (C) from the biosphere to the atmosphere. On average 70% of ecosystem respiration in forests is soil respiration (Ryan and Law, 2005). Forest soil respiration is likely to undergo significant changes during ecological succession in Northern...

Jed Sparks Measuring soil nitrogen trace gas emissions

We are measuring soil nitrogen trace gas emissions in conjunction with the overall FASET experiment.

NSF
Integrating Long-term Demographic Data and Repeated Genetic Sampling for Viability Analysis of Natural and Restored Populations of Pitcher's Thistle

Seven populations of the federally-listed threatened Pitcher's thistle (Cirsium pitcheri), a rare plant restricted to the shorelines of the western Great Lakes, are being assessed for long-term population viability. Our research brings together a long-term demographic data set, repeated...

USFWS
2DGC project with Tim Starn

We build a 2D GC and use it to measure BVOCs that are related to changing emissions from forest succession, to be conducted at the PROPHET lab

NSF
Amanda Browne The threat of cleaning up the problem: how restored habitats and increasing proportions of invasive crayfish are impacting ecosystem structuring

The increasing expansion of the rusty crayfish, Orconectes rusticus, beyond its native range threatens to displace the native species, Orconectes virilis, and disrupt the community structure of the invaded ecosystem. Given their larger body size, more aggressive behaviors, and...

Diversity of the diatom genus Frustulia

Project aims to explore diversity and biogeography of the species from the diatom genus Frustulia. Species identification and delimitation uses integrative taxonomical approach, which combines molecular data, traditional and geometric morphometrics, and ecology inferred from in situ measurement...

Kelly Houseal Do carbon-based and nitrogen-based plant chemical defenses respond differently to rising atmospheric CO2 levels? A test with tomato, phenolics, alkaloids, and protease inhibitors

For most plants, growth under elevated CO2 results in increased biomass since photosynthesis rates are increased; however, this increase is accompanied by a decrease in leaf percent nitrogen and an increase in C:N ratio. Therefore, in the future, plants may have less nitrogen available for...

Susan Theis Eutrophication of Viking Lake

After over a decade of substantial acid rain, this already dystrophic lake was inundated with acidity, creating an inhospitable environment for aquatic life. In an effort to reverse these changes, the Viking Lake Association added a carbonate buffer, supplemental nutrients, and stocked the lake...

Timothy James Chytrid survey at the University of Michigan Biological Station

The fungal disease chytridiomycosis (chytrid) is globally associated with declining amphibian populations. In some regions of the world, such as eastern North America, amphibian populations are stable and there is little evidence of disease-related declines. Thus, these regions may be parts of...

UM-EEB
The effects of pitcher plant (Sarracenia purpurea) nectar, color, and leaf morphology on prey capture and inquiline communities.

To follow

Mac Callaham Soil and litter dwelling macroinvertebrates near litter application plots

In association with ongoing research at UMBS, we will sample soil and litter dwelling macroinvertebrates near litter application plots for EBIS/AmeriFlux plots (Project overseen by Paul Hanson, Oak Ridge National Lab). At each EBIS/Ameriflux litter application site, we will sort 2 leaf litter...

DOE - Oak Ridge National Lab
Give Protection to Your Residence Items via Powerful Relocating Service Provider

It is crucial anyone load up your own important everything with the aid of distinctive product packaging items. A few of the packaging resources usually are: papers, jar beers, muscle reports, bubble wrappers, fevicol together with pouches. More, it's also advisable to understand beforehand...

Common Merganser brood foraging behavior and its potential link it to the Diplostomum life cycle

It is known that the habitats of the common merganser and the freshwater snail Stagnicola emarginata, the two usual hosts required for Tricobilharzia stagnicolae to complete its life cycle, closely overlap. S. emarginata is also a host for Diplostomum flexicaudum, a parasite that infects the...

NSF-REU
Lin Lin Scientific illustration handbook for woody plant

With the knowledge I have learned from field botany and my drawing experience, I plan to make a handbook which can differentiate similar species by hand sketch illustration.

Brian van Ee Consequences of climate change on crayfish ecology and behavior.

Current projects (A1FI) have the climate of Northern Michigan rising about 8 degrees Celsius in the next 100 years. This change could have drastic effects on the local ecology and species make up of the region, in both aquatic and terrestrial habitats. Crayfish being cold blooded will be...

NSF-REU
Nicole Dear Assessing Understory Plant Growth in Response to Changing Light and Nitrogen Availability Associated with Northern Temperate Forest Succession

Understanding understory plant competition is vital in understanding forest succession and future forest composition. Competition varies over space and time depending on limiting factors and available resources. Successional disturbances affect competition, as these disturbances cause shifts in...

Deborah Hudleston Effect of elevated atmospheric CO2 and tropospheric O3 on belowground plant litter biochemistry and the influence of microbial community composition on ecosystem nitrogen availability

In order to predict the response of ecosystem productivity to increasing concentrations of atmospheric carbon dioxide (CO2) and tropospheric ozone (O3), it is necessary to understand how such changes will affect releases of biologically reactive nitrogen (N) during organic matter decomposition...

NSF-IGERT
Christopher Crawford Vocal interactions in a migratory population of pine warblers (Dendroica pinus) in Northern Michigan

The goal of this project is to analyze the vocal patterns and interactions of a migratory population of pine warblers (Dendroica pinus) in Northern Michigan. One of the main components consists of finding how many songs each bird typically sings (in other words, evaluating each bird’s song...

NSF-REU
Knute Nadelhoffer DIRT - Detritus Input & Removal Treatment Project

The goal of the DIRT project is to assess the role of plant litter (both from above and belowground) in controlling the accumulation and turnover of organic matter and nutrients in forest soils. This is done by systematically increasing or decreasing inputs of litter from aboveground and by...

Michael Penskar Statewide Status Assessment of the Mimulus michiganensis (Michigan monkey-flower)

The purpose of this project is to evalutate the rangewide status of the state endemic and federal and state endangered Mimulus michiganensis through methodical inventory of the 19 known extant occurrences in Benzie, Charlevoix, Cheboygan, Emmet, Leelanau, and Mackinac counties. Acquiring more...

USFWS
Cross-habitat exchange of mercury between aquatic and terrestrial ecosystems

The purpose of this study is to investigate the cross-habitat exchange of mercury between aquatic and terrestrial ecosystems. When the insects emerge out of the water, they transport significant amount of mercury to terrestrial ecosystems. The transported mercury can then be exposed to...

M cubed
Emily Farrer Plant-soil feedbacks in a dry grassland

Plant-soil feedbacks have recently been implicated in producing profound community consequences. In my dissertation, I combine surveys with experiments to test the importance of feedbacks in a dry grassland system. A feedback is composed of two parts: species effects on the environment and...

NSF-IGERT
Buck Castillo Effects of Typha x glauca on methane flux in freshwater ecosystems under anaerobic conditions

I conducted research that focuses on answering the question of how Typha x glauca, an invasive plant species, is affecting methane fluxes in freshwater wetlands under anaerobic conditions. In order to determine the effects of Typha and its litter on CH4 fluxes in anaerobic wetland soils, gas...

NSF-REU
Lillian Smith Effects of Phenotypic Plasticity in Sarracenia purpurea L.

Sarracenia purpurea L. or the northern purple pitcher plant is a long-lived rosette-forming perennial that can be found in northern Michigan. It grows in nutrient poor environments like bogs and seepage swamps. Unlike most terrestrial plants Sarracenia pupurea L. has the ability to capture...

NSF
Culverts As A Mechanism for Habitat Fragmentation In Streams

The purpose of this study is to investigate whether or not stream crossings lead to habitat fragmentation. Culverts, or the pipes that run underneath roads that cross over water, can increase stream flow and alter the sediment distributions downstream, affecting animals that choose habitats...

Robert Hansen Ambient measurements of total OH reactivity near the forest floor

My work at UMBS in the summer of 2010 will focus on ambient measurements of total OH reactivity near the forest floor. The sampling setup will consist of an enclosure placed on top of the forest floor to isolate VOC emissions from an area of the forest floor. To accommodate the flowrate needed...

NSF-IGERT
Robert Aldredge Food availability and adult mortality in house sparrow populations

I will be collecting an invasive bird species, the House Sparrow, from farms located off of UMBS property. I will examine two historically important hypotheses of avian clutch size patterns, 1) the food availability hypothesis and 2) the adult mortality hypothesis. I will test these hypotheses...

UMBS - Joel Heinen Fellowship
American Museum of Natural History - Chapman Grant
Robert Pillsbury Effects of grazing on nitrogen cycling within periphyton mats

Mature periphyton communities will be grown on a series of tiles in several experimental streams. The tiles at the top of the stream will be exposed to N15 and then gently rinsed. The treatment for each stream will be the exposure of periphyton to different grazers such as chiromonids (with...

Experimental evaluation of the freshwater genus Stagnicola (Gastropoda:Lymnaeidae): ecomorphs or valid species?

Pleistocene glaciations had great impacts on freshwater biota of Neartic ecosystems, although the evolutionary impacts of the forced retreats and subsequent recolonizations of freshwater populations are still poorly understood. The freshwater gastropod genus Stagnicola is comprised of 21 nominal...

Eric Hellquist Floristic inventory of the Little Traverse Conservancy Bessey Creek Nature Preserve, Douglas Lake

In 2011, the Field Botany of Northern Michigan class conducted an initial floristic study of the Bessey Creek Nature Preserve (BCNP) in Cheboygan County, MI. BCNP is owned by the Little Traverse Conservancy (Harbor Springs, MI). The site is located at the mouth of Bessey Creek where it enters...

n/a
Forest Accelerated Succession Experiment (FASET)

Project Overview

Our primary objective is to provide an improved understanding of the biological and climatic controls over carbon (C) and energy cycles during and after a successional shift from a mature aspen to a young mixed confer/deciduous forest ecosystem that will...

Department of Energy
Surveying the diversity of Cryptomycota in Michigan

Much of the biodiversity of eukaryotes lies in single cell organisms. While most fungal phyla have been known for centuries, a novel group of fungi was recently described which is known primarily from DNA sequences. We are trying to determine the true biodiversity and ecological role of the...

NSF
PROPHET

The Program for Research on Oxidants: PHotochemistry, Emissions, and Transport (PROPHET) was created in 1996, as a coordinated research effort aimed at investigation of the relationships between atmospheric odd nitrogen, ozone, and forest-atmosphere interactions. The motivating science...

NSF
Kristi Judd Long-term monitoring of trophic status of Douglas Lake

This project involves a series of decadal assessment of the trophic status of Douglas Lake. Measurement of the hypolimnetc oxygen deficit, primary production, and bacterioplankon and nanoflagellate abundances have been tracked following eutrophication through the seventies and eighties, and...

Kevin McAvey The role of night time chemistry in the sequestration of Nox

Whats the role of night time chemistry in the sequestration of Nox? At the completion of the isotopic analysis project, we will expand our research focus to include the night time reaction between the nitrate radical (NO3) and isoprene. This project will focus on determining speciated isoprene...

NSF
Photosynthetic rates in the purple pitcher plant, Sarracenia purpurea

We will measure the photosynthetic rates of various parts of the plant

Steven Edburg Large Eddy Simulation of the Biogenic Volatile Organic Compound Isoprene

Biogenic Volatile Organic Compounds (BVOC), such as isoprene, are emitted from vegetation and oxidize rapidly in the atmosphere. Oxidation products from these compounds can contribute to the formation of ozone and secondary aerosols having an adverse effect on regional air quality. A detailed...

NSF-IGERT
Kimberly Greene Invertebrate Response to Wetland Restoration

Typha x glauca (cattail) is an invasive wetland plant that drastically alters how many Great Lakes coastal wetlands function. We are studying what effect Typha X glauca stands have on aquatic macroinvertebrate communities within these marshes. Coastal wetlands are critically important to many...

EPA
Scott Miehs Test of a non-physical bio-acoustic fence to guide migratory sea lamprey

The development of non-invasive technologies to divert adult sea lamprey migrations and direct adults into traps where physical barriers are not present is a primary research objective of the sea lamprey control program (McLaughlin et al. 2007). Traps have the potential to aid the control...

Great Lakes Fishery Commission
Michigan Gradient Study - Atmospheric Nitrogen Deposition and Microbial Mechanisms Enhancing Soil Carbon Storage

Human activity has globally increased the amount of nitrogen (N) entering ecosystems, which could foster higher rates of C sequestration in the N-limited forests of the Northern Hemisphere.  Presently, these ecosystems are a large global sink for atmospheric CO2, the magnitude of which...

Department of Energy
NSF
Elizabeth Wason Do Plants Make Scents in Theories of Plant Defense?

Plants respond to herbivory by evolving and inducing defenses against herbivores. Though plant defenses have been studied extensively, indirect defenses have not been incorporated into theories of plant defense. Volatile organic chemicals (VOCs) are gases which can be emitted by vegetation....

NSF-IGERT
Peter Curtis Combining long-term (> 12 yrs) C cycling measurements and a novel large-scale experimental manipulation with modeling studies

At UMBS we are combining long-term (> 12 yrs) C cycling measurements and a novel large-scale experimental manipulation with modeling studies in an effort to improve regional projections of forest C storage. Our goal is to explain the physical, biological and ecological mechanisms by which...

DOE/NICCR
Mobilization of mercury from forests to lakes

Mercury is a notoriously hazardous pollutant that accumulates in fish, posing health risks to humans who eat fish. From a peak in the 1980s, concentrations of mercury in fish in the Great Lakes region have declined – due to pollution controls – but are again on the rise. The rise, we...

Eutrophication of Douglas Lake

This is the 6th is a sequence of studies begun in 1970 assessing the eutrophication of different regions of Douglas Lake and relating differences to bacterioplankton, zooplankton, and zebra mussels

self
Modeling community and ecosystem processes in wetland plant invasion and nutrient cycling

Invasive plants in wetlands may alter community composition through complex interactions related to elevated N inflows, plant size, litter production, and ecosystem N retention and recycling.

NASA
Kyle Maurer Atmospheric modeling directly above the forest canopy

Current atmospheric modeling represents both the biosphere and the atmosphere directly above the forest canopy as coarse boundary conditions. The biosphere is expressed as a 2-D surface that does not take into account specific qualities of the forest canopy (i.e. canopy height and crown size)....

NSF-IGERT
Katie Klotz Ammonia Effects on Social Hierarchy Formation

The interactions of species in an ecosystem rely on the stability of the keystone species within the system. Crayfish are keystone species with populations decreasing plant density by grazing and acting as a limited food source for predators, like the small-mouth bass. Crayfish as a keystone...

Martin Tsui Identifying Sources and Degradation Mechanisms of Methylmercury in Temperate Forest Ecosystems

Mercury (Hg) is a global atmospheric pollutant that has been deposited into virtually all ecosystems on the Earth. Methylmercury (MeHg), the most toxic form of Hg, can strongly bioaccumulate and biomagnify in food webs, posing a serious threat to natural populations of wildlife. Production and...

National Science Foundation
Troy Keller Local adaptations to flow: investigating how flow conditions in streams and lakes influence chemically-mediated search behavior in crayfish

For large mobile organisms (>1 cm) the fluid environment (e.g., air or water) varies over time and across space. This is particularly well-documented for organisms living in freshwater aquatic systems. Streams and rivers serve as a useful example since they both show highly variable...

A sustainable approach for restoring wetland biodiversity

We are examining the plant community response to biomass-removal restoration approaches conducted in Typha x glauca invaded wetland ecosystems; exploring the renewable energy production potential of utilizing restoration-harvested invasive species biomass; and modeling the economics of this...

EPA
GLRI
Christopher Gough Understanding controls over carbon and energy cycles following a successional shift

Our primary objective is to provide an improved understanding of the biological and climatic controls over carbon (C) and energy cycles during and after a successional shift from a mature aspen to a young mixed confer/deciduous forest ecosystem that will be widely distributed across the upper...

DOE/NICCR
Melissa Galloway Observations of glyoxal and formaldehyde at the PROPHET mixed hardwood forest site in 2008 and 2009

The interactions between isoprene, ozone, and secondary organic aerosol (SOA) are poorly understood, but may play an important role in biosphere-atmosphere feedback mechanisms. Continuous, measurements of gas phase glyoxal are proposed at the PROPHET/Ameriflux site of the University of Michigan...

NSF-IGERT
John Hassett Effect of nitrogen deposition on the activity and diversity of lignin degrading fungi

Microorganisms in soil mediate critical links between the atmospheric and terrestrial nitrogen and carbon cycles. Human alteration of the global N cycle has resulted in the emission of reactive N (Nr) into the atmosphere, and these N species may elicit changes in the expression of genes that...

NSF-IGERT
Ines Ibanez Colonization capacity of migrating species

Plant populations migrating in response to climate change will have to colonize established communities. Even if a population disperses to a new region with a favorable climate, interactions with other species may prevent its establishment and further spread. The potential of these species to...

NSF-EAGER
Lizette Ramírez Adaptations to novel habitats in Sarracenia purpurea

Scientists hope to understand adaptations which allow organisms to expand beyond habitats in which they originally evolved. Carnivorous plants were thought to have originated in ecosystems that are both low in nitrogen and high in sunlight. Because they are no longer limited by carbon capture...

UM-EEB
NSF
Mengxue Xia Soil carbon cycling under chronic N addition

Significant soil carbon accumulation (about 10 %) under the anthropogenic N deposition has been observed in our 16-year-long field experiment. This project will mainly focus on the physiological processes underlying this response of soil carbon under the chronic N addition. Several hypotheses...

Department of Energy
National Science Foundation
Swimmer Itch Project

TBD

Resisting the decline: Disturbance severity and net primary production resilience of a Great Lakes forest ecosystem

This research focuses on how disturbance across a gradient of severity affects the net primary production of Eastern deciduous forests in the US. The four primary objectives include 1) identification of the relationship between NPP resistance and resilience to disturbance severity ; 2)...

Department of Energy
Survey of Flora and pollinators, Cordwood Point

For a ceramics project on bees, I am examining the flowers blooming in late May at Cordwood Point, Michigan

Thomas Luhring Proof-of-Concept Test of Larval Sea Lamprey Responses to Alarm Cue

The extent to which newly-hatched sea lamprey larvae alter their spatial distribution through individual movements remains a largely unexplored and potentially important driver of recruitment success in the Great Lakes sea lamprey population. In addition to revealing large, stochastic mortality...

Great Lakes Fishery Commission
Constraining the Carbon Cycle with Tree-Ring-Derived Estimates of Aboveground Biomass.

We present a research plan to improve land surface models (LSMs) using new and existing data collections and modeling infrastructure that we have helped to develop. To achieve this goal, we will build upon a data assimilation system under development for the Community Land Model (CLM) and...

Department of Energy
Colin Kyle Constructing a mechanistic species-interaction model of gypsy moth population fluctuations

Under certain conditions, some forest pest insects exhibit massive population explosions and cause devastating damage over large areas of forest. Although these highly environmentally sensitive pests currently plague North American forests, we may see more frequent and intense outbreaks in the...

Hines Fund - The University of Chicago
Claudia Jolls Integrating Long-term Demographic Data and Repeated Genetic Sampling for Viability Analysis of Natural and Restored Populations of Pitcher's Thistle

Seven populations of the federally-listed threatened Pitcher's thistle (Cirsium pitcheri), a rare plant restricted to the shorelines of the western Great Lakes, are being assessed for long-term population viability. Our research brings together a long-term demographic data set, repeated...

NSF
UMBS Internal
Meghan Howey The Cultural Landscapes of Douglas Lake Archaeological Research Project (CLOD)

The Cultural Landscapes of Douglas Lake Archaeological Research Program (CLOD) expands ongoing research on Late Prehistoric (AD 1200-1600) Native American occupation around Douglas Lake in Northern Michigan. It is a joint effort between the University of New Hampshire and the University of...

NSF
Colleen Smith The impact of nitrogen fixation on soybean-herbivore interactions under elevated carbon dioxide

Future increases in concentrations of atmospheric carbon dioxide due to anthropogenic activity will alter the dynamics of plant-herbivore interactions. Under elevated CO2, plants photosynthesize more, and as a result experience decreased foliar nitrogen concentration and an increased carbon:...

NSF-REU
MCubed - Methane, Ethane, and Aerosols at PROPHET

With importance to both climate change and air quality, the proposed effort will augment the Program for Research on Oxidants: Photochemistry, Emissions, and Transport (PROPHET) at UMBS. PROPHET is well-suited for studies of forest-atmosphere interactions and the influence of transported urban...

University of Michigan MCubed
Drivers of decadal to century forest net primary production

Using data collected in chronosequences of both red pine and aspen-birch forests we seek to examine drivers of net primary production over decadal to century scales.

Conor Flynn Characterization of Soil Respiration following Forest Disturbance

The carbon balance of ecosystems is determined as production minus respiration and soil respiration makes up the largest fraction of ecosystem respiration. Yet studying soil respiration is complicated by difficulties measuring accurate spatial and temporal variability. To address this knowledge...

John Kociolek Freshwater Algae of the Douglas Lake region.

This project will develop web-based tools related to the identification and distribution of freshwater algae in the Douglas Lake region. This resource will be available to, and support, teaching in a variety of classes at UMBS, including the Freshwater Phycology class. We will develop site...

UMBS Fellowship
Paul Shepson Night-time chemistry - volatile organic carbon emission and ozone production

Looking at nigh-time chemistry including volatile organic carbon emission and ozone production.

NSF
Marcella Baiz Substrate size and partial prey comsumption in the antlion larvae Myrmeleon immaculatus

It has been suggested that antlion larvae foraging strategy depends on environmental conditions in the Australian species, Myrmeleon acer. A previous study found that antlions that were forced to build pits in coarse sand consumed a greater percentage of each prey item than antlions that were...

NSF
Mark Flanner CAREER: Linking cryospheric processes across scales to model non-linear albedo feedback

Intellectual Merit and Objectives: Earth’s cryosphere holds large capacity to alter planetary reflectance and surface temperature through albedo feedback, partially explaining the high sensitivity of Arctic climate. Albedo feedback, however, is actually composed of multiple mechanisms...

National Science Foundation
Sterling Atkins DIRT 2011 Project

We are determining the amount of soil C at different levels based on the number and variety of earthworms in areas with varying amount of leaf litter. In addition we are determining the number and types of earthworms based on different litter treatments in the DIRT plots. We are using this...

NSF-REU
Experimental invasion of constructed wetland mesocosms

Coastal wetland plant communities in Michigan and throughout the Great Lakes region are increasingly dominated by non-native plant taxa, especially Phragmites australis, Typha angustifolia, and T. X. glauca. These non-native plants are substantially taller and larger than most native wetland...

NASA
Alexander Bryan Vertical distribution of VOC emissions in a Northern Michigan hardwood forest

Volatile organic compounds (VOC) play an important role in air quality and climate by acting as precursors for tropospheric ozone and secondary organic aerosols (Logan 1985). Forest ecosystems represent an important source of VOC to the atmosphere, contributing ten times more to the global VOC...

TBD
SYMBIOTIC N2 FIXATION IN GREAT LAKES REGION SPECKLED ALDER

I assess the importance of N-fixing bacteria Frankia as the proportional availability of fixed N to mineralized N using a flow-through method. The purpose of this study is to measure Frankia N-fixation and soil N-mineralization; framing the Frankia-Alnus symbiosis in the context of meeting alder...

University of Michigan EEB Block Grant
Rackham Research Grant
Fernanda Santos Black carbon and fine root dynamics in forest ecosystems

Fine roots and pyrogenic organic matter (PyOM, e.g. charcoal and soot) are known to be important sources of carbon (C) inputs to forest soils. My research at the UMBS addresses several unknowns regarding: (1) the main factors that control fine root dynamics; (2) PyOM mean residence time, and...

NSF-IGERT
Evolution of female-specific color polymorphisms in damselflies

Sexual harassment is a common evolutionary outcome of sexual conflict of interest over mating, but we know little about the fitness consequences of harassment, how females have responded to it, or how species interactions have shaped responses by both females and males. Enallagma damselflies,...

NSF
PROPHET - CABINEX : Atmospheric Chemistry Impacts of Coupled Forest Succession and Climate Change

Much has been learned over the last two decades about the impact of biogenic volatile organic compound (BVOC) emissions on atmospheric photochemistry and on aerosol loading. It is becoming clear that many basic tropospheric processes are altered by proximity to forest canopies, which are large...

NSF
Jasmine Crumsey Earthworm invasions as drivers of soil carbon sequestration in north temperate forests

This research will answer unresolved questions regarding changes in forest carbon (C) sequestration in response to exotic earthworm invasions involving multiple earthworm species. The impacts of earthworm invasions remain undescribed on sandy forest soils, and to date no single study has...

NSF-IGERT
NSF-DIG
Sara Lahman Molecular Dispersion from Point and Non-Point Pollution Sources

Molecular dispersion of each type of pollution (point and non-point) will be first investigated in a natural setting, a small section of the Maple River, in Pellston, Michigan. Through gathering of data from a natural habitat, baseline parameters will be established. Dispersion will...

Mackenzie Caple Physiological responses of Acer rubrum, Quercus rubrum, and Populus grandidentata to water stress

Understanding how different trees respond physiologically to changes in soil moisture is essential for the development of reliable climate change models. Present modeling approaches fail to model the adaptive and spatiotemporally varying patterns of soil root water uptake, especially in...

NSF
Erin Roche Unveiling the migratory route of the Great Lakes Piping Plover

The Piping Plover (Charadrius melodus) is a migratory ground-nesting shorebird that is currently endangered and the flagship species of the Great Lakes coastal dune ecosystem. Although Piping Plovers once nested along the shorelines of all five Great Lakes, numbers began to decline in the mid...

Meredith Luneack Life, Liberty, and Property: The Functionality of Non-profit Land Conservancies in the Context of Modern American Political Ideals

For sixty years, The Nature Conservancy has defined American efforts to conserve ecosystems and natural features through land acquisition; that is, through the donation and sale of property by private actors. They serve as the flagship organization for the conservation movement and are one of...

The eutrophication of Douglas Lake

Project begun in 1970, continued in 1981, 1990, 2000, 2007 documents change in trophic state of Douglas Lake as a function of regional land uses. The west end in regions of cottages is more eutrophic than remainder of lake. The increasing trend of eutrophication was stopped in 2000 and then...

none
Diversity of the diatom genus Frustulia

Project aims to explore diversity and biogeography of the species from the diatom genus Frustulia. Species identification and delimitation uses integrative taxonomical approach, which combines molecular data, traditional and geometric morphometrics, and ecology inferred from in situ measurement...

Madison Olson The consequence of rutin, chlorogenic acid, and nicotine on the specialist herbivore Manduca sexta (Sphingidae)

Plant-herbivore interactions are crucial to life on Earth, and central to this relationship are plant defense compounds. Plant defense compounds compose a wide variety of carbon and nitrogen containing compounds including: phenolics, alkaloids, and glycosides, which are broadly classified as...

NSF-REU
James Dearworth, Jr The Red-eared Slider Turtle: A Model for Neurodegenerative Diseases and Conservation Biology

The red-eared slider turtle (Trachemys scripta elegans) is considered one of world’s worst invasive species and can be a warning sign of an ecosystem in trouble. The reasons for its success are poorly understood but may include a tolerant physiology with possession of nervous tissues that can...

Diversity of the diatom genus Frustulia

Project aims to explore diversity and biogeography of the species from the diatom genus Frustulia. Species identification and delimitation uses integrative taxonomical approach, which combines molecular data, traditional and geometric morphometrics, and ecology inferred from in situ measurement...

Piping Plover Salvage Captive Rearing Program

Captive rearing and reintroduction of the Great Lakes Piping Plover is conducted opportunistically on a small scale using eggs abandoned in the breeding range. The GLPP is a federally endangered species and the majority of its nests are monitored daily. If a nest is abandoned, the eggs are...

National Fish and Wildlife Foundation
Nick Smith Temperature acclimation of leaf carbon exchange: understanding variation among species and biomes

The Earth System Models (ESMs) used to make climate projections are continually becoming more sophisticated, and now incorporate a wide range of terrestrial processes. However, some potentially important processes are still omitted because they are either poorly understood or not quantified well...

NSF
Molly Gallagher Modeling the population dynamics of jack pine budworm Choristoneura pinus in light of accelerating climate change

Deforestation is a global problem that can result in erosion, desertification, climatic changes, and displacement or extinction of plant and animal species. Insect outbreaks play a major role in forest destruction, particularly in boreal forests, a role that is expected to increase in importance...

Martin III, Arthur L. The effects of the neuromodulator serotonin on orientation behavior in crayfishes

I will be running 2 research projects this summer. I will have at least one undergraduate student attending the station with me. The student and I will be examing the effects of the neuromodulator serotonin on orientation behavior in the flume at the Stream Research Facility. I will also be...

Saginaw Valley State University Internal Grant
Alexandria Moore Fitness Impact of Aphid Herbivory on Common Milkweed, Asclepias syriaca

Common milkweed is an abundant perennial plant found throughout North America. Many insect species depend on milkweed for food resources, protection, and reproductive benefits, including aphids, longhorn beetles, and monarch butterflies. Through these interactions, many species benefit greatly...

NSF
Kendall Effinger The effect of increased atmospheric nitrogen deposition on prey capture in the purple pitcher plant, Sarracenia purpurea

Human activities, like the burning of fossil fuels and industrial fertilizer use, have substantially increased the amount of nitrogen (NOx) entering the atmosphere and more than doubled the amount of nitrogen entering the terrestrial nitrogen cycle by deposition. Increased nitrogen deposition...

NSF-REU
Celia Faiola Plant species release of biogenic volatile organic compounds (BVOC)

Many plant species are known to release biogenic volatile organic compounds (BVOC) into the atmosphere (Kesselmeier and Staudt, 1999). Specific volatile chemical species emitted include terpenoid (e.g., isoprene, monoterpenes, and sesquiterpenes) and non-terpenoid (e.g., methanol, acetaldehyde...

NSF-IGERT
Katelyn Geiger The Effects of Dissolved Oxygen Concentrations of Crayfish Foraging Behavior

Humans have changed the demographics of the earth through increased CO2 which has lead to an overall increase in temperature of the earth. The increase in atmospheric temperature is expected to lead to an increase in aquatic temperature. Warmer water temperatures are predicted to pose a threat...

NSF-REU
Latitudinal variation in pollination and herbivory

Species interactions such as pollination and herbivory have often been observed to be more prevalent or intense at lower latitudes. This may explain why biodiversity is so high in the tropics. Coevolution in species interactions could cause high diversification rates compared to the main...

Hans Tritico Understanding the Role of Turbulent Eddy Composition in Stream Ecosystem Services: Application of in-situ PIV to Habitat Selection Studies

The objective of this EAGER proposal is to demonstrate the applicability of in-situ particle image velocimetry (PIV) technology to address fluid mechanics questions that are difficult to answer in the laboratory. We will demonstrate this applicability by linking eddy composition to fish habitat...

NSF - EAGER
The effects of altered RHP perception of self and opponent on fight dynamics and assessment in crayfish (Orconectes virilis)

Agonism is an important social aspect of animal behavior and the outcome of agonistic interactions is critical to the acquisition of vital resources. During agonistic interactions, individual participants make behavioral decisions based on energy and time investment. In order to make optimal...

Larissa N. Vasilyeva Biogeographical patterns of fungal distribution

The biogeographical patterns in fungal distribution are not clearly elucidated. Despite pyrenomycete species were thought to have very wide distribution, there is an evidence of more restricted areas. Especially interesting is a so-called 'Asa Gray disjunction' between eastern Asia and eastern...

Russian Foundation for Fundamental Studie
Kathryn Bergh The effect of forest disturbance on volatile organic compounds in eastern white pine (Pinus strobus)

In the coming decades, the forests of the Upper Great Lakes region are expected to experience disturbances that are primarily anthropogenic in origin and only affect certain species or a portion of the canopy. The Forest Accelerated Succession Experiment (FASET) mimics this type of disturbance...

NSF-REU
Kendall Simon Breeding Bald Eagle Home-Range and Habitat Use

Studying home-range and habitat use through cellular telemetry, with a secondary goal of monitoring year-round movements and habitat use.

BIA Circle of Flight-Great Lakes Restoration Initiative (Little Traverse Bay Bands of Odawa Indians)
Mark Hunter The role of plant chemistry in the population dynamics of herbivores

This long-term study investigates the effects of phytochemical variation on the population and community ecology of insects that feed on milkweed. We are following 48 milkweed clones on the ballfield, measuring variation in their chemistry, and counting the insect herbivores on these plants.

NSF
Vincent Denef Effects of zebra mussel invasion on freshwater lake bacterioplankton communities

The main objective of this study is to elucidate how zebra mussel (Dreissena polymorpha) invasion shapes the biotic interactions controlling freshwater bacterioplankton community composition and function. In ecological theory, these biotic interactions are generally divided into top-down (...

UMBS
Buck Castillo Ergosterol as an indicator for Ectomycorrhizal abundance associated with Red Oak and White Pine roots

In this study we will focus on determining the strength of mycorrhizal symbiosis associated with two species of trees, Quercus rubra and Pinus strobus. I will be using ergosterol, the dominant sterol in ectomycorrhizal fungi, as an indicator of fungal biomass.

NSF
UM-EEB
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Robert Fahey Restoration of native pine species in Great Lakes coastal environments

Limited information exists on the regeneration dynamics, mycorrhizal associations, and genetic diversity and local adaptation of native pine species in Great Lakes coastal environments (dunes/beach ridges). An improved understanding of these issues is essential to designing and implementing...

NOAA Illinois-Indiana Sea Grant
Identifying Sources and Degradation Mechanisms of Methylmercury in Temperate Forest Ecosystems

Mercury (Hg) is a global atmospheric pollutant that has been deposited into virtually all ecosystems on the Earth. Methylmercury (MeHg), the most toxic form of Hg, can strongly bioaccumulate and biomagnify in food webs, posing a serious threat to natural populations of wildlife. Production and...

NSF
Forests in Transition

Project Overview

Re-growing forests across the North Temperate Zone presently remove about 15% of fossil fuel carbon dioxide (CO2) emissions.   It is unclear, however, how long and to what extent these forests will continue to sequester CO2 and...

Maggie Koopman Phylogeography of Michigan pitcher plants and their microbial communities

Our project aims to characterize the plant genetic diversity within populations of Purple Pitcher Plants (Sarracenia purpurea) throughout the state of Michigan as well as the microbial community within the pitchers. Investigations into the evolutionary history of organisms commensal to...

Kathryn Hofmeister Mechanisms Sustaining High Productivity in Mature Forests of Northern Michigan

One of the primary driving forces behind contemporary climate change is an increase in anthropogenic emissions of long-lived gases such as carbon dioxide (CO2), methane, and nitrous oxide. These greenhouse gases are leading to increasing mean global temperatures as well as numerous other...

NSF-REU
Matthew Linn Effects of suspended sediment on Orconectes virilis chemical stress signals and behavior

As the climate continues to change aquatic ecosystems will likely experience altered environmental conditions. Climate change will result in more intense rain events and higher erosion in some portions of the world. Erosion is likely to result in increasing water turbidity. At this point it is...

NSF-REU
Fine-scale modeling of transpiration and carbon assimilation in forests

Forest ecosystems world-over are going through rapid structural changes. These crown-scale changes may extend over large spatial domains. However, the consequences of changes to small-scale canopy structure are not currently incorporated in simulations. The goal of this work is to advance the...

NSF #60019617
Dale Trexel Spatial and Temporal Analyses of Mercury Bioaccumulation in Minnesota's Lakes: Which Landscape Factors Affect the Deposition-Bioaccumulation Process?

Mercury levels in fish in Minnesota vary from lake to lake, and fish consumption advisories for humans have generally been approached on a lake-by-lake basis. Little study has been done asking why bioaccumulation varies and what factors cause this variation. By looking at the spatial patterns of...

NSF-IGERT
Rebecca Meissner Stream edge desiccation: The effects of drought on algal communities and grazers in temperate streams

This experiment examines the effects of drought periods on algal communities in streams. This is motivated by a predicted decrease in streamflow for temperate latitudes, causing the edges of streams to dry out for long periods of time. Benthic algal communities are studied, with quantification...

NSF-REU
Gabriel Abud Effect of tree species, size, and accelerated succession on mycorrhizal colonization

Mycorrhizae are symbiotic fungi that form associations with roots to help absorb nutrients in return for carbohydrates. They provide a large part of the nutrients required, especially in low nutrient environments. Northern temperate forests such as those in northern Michigan are undergoing...

National Science Foundation
Black Carbon: Linking the chemical structure of black carbon to its biological degradation and transport dynamics in a northern temperate forest soil

Our hypotheses will test the effects of combustion temperature on Black Carbon (BC) chemical structure and subsequent degradation rates. While plant species effects on BC structure and dynamics in the environment are not well studied, species effects have been shown as minor compared with the...

NSF
Linking Heterogeneity of Above-Ground and Subsurface Processes at the Gap-Canopy Patch Scales to Ecosystem Level Dynamics

Trees control soil moisture by drawing water through the roots and transpiring them to the air. They also lead to an opposite effect of reducing evaporation from the soil to the air by shading the ground and reducing the wind speed near the surface. Current watershed models simulate soil...

NSF
Paul Moore Social Interactions and Aggression in Crayfish

Crayfish are keystone species in freshwater systems. My lab studies how social hierarchies are constructed at the mechanistic level and the ecological impact of aggression in crayfish

Kevin He Understanding the population forcings of induced forest succession on Peromyscus leucopus

As climate continues to shift across the globe, many forest ecosystems will succumb to the combined stress of temperature, precipitation, and biota shifts. With this in mind, it is essential to understand what effects we are likely to see in the future. In the spring of 2008, a group working at...

NSF-REU
Sensory mechanisms used by Rusty crayfish to determine between predator and prey.

The purpose of this study is to understand how crayfish determine when another organism is their prey and when this other organism is their predator. Crayfish and crayfish share this relationship. When the catfish are small compared to the crayfish, crayfish will prey upon the catfish. When...

Julia Thomsen Soil Moisture Heterogeneity and Plant Moisture Stress in a Northern Hardwood Forest

Trees draw water from soil through roots to their leaves. During photosynthesis, water is lost through the process of transpiration. This creates states of water stress within the tree that vary with evaporative demand and water availability. One goal of this project is to examine the spatial...

NSF-REU
Mingzi Xu Cost of Female Color Mimicry for Males in the Damselfly Enallagma hageni

In Enallagma damselflies, female-specific color polymorphism is proposed to have evolved under sexual antagonistic selection to confuse the males, hence, reduce harassment. However, sexual antagonistic selection rarely ceases. When the female strategy incurs costs for the males, the males are...

Nelson Bonilla Detection of sap accumulation in the paper birch (Betula papyrifera) by the Yellow-Bellied Sapsucker (Sphyrapicus varius)

The Yellow-Bellied Sapsucker, Sphyrapicus varius, is a double keystone species, which plays an important role in the mixed hardwood forest and boreal forest of North America by providing cavities, as well as feeding sites, for many other organisms in the forest. S. varius feed on tree sap as a...

UM-EEB
NSF
Roger De Roo A low cost sensor to quantify spatial and temporal variability of snow packs for SCLP validation

A wireless sensor that can measure the local density, wetness, temperature and snow grain size of a snow pack will be designed, fabricated and validated in this effort. By minimizing the cost of replication of this instrument, sensor webs can be deployed that will characterize the considerable...

NASA
Paul Webb The role of flow and growth form in the organization of freshwater marsh communities

Most aquatic environments experience flows of some sort. Water flow defines riverine systems, but wind and human-created currents are also major features of ponds and lakes. Margins of all aquatic systems are common locations for marshes, systems that provide some of the most diverse and...

Photosynthetic rates in the purple pitcher plant, Sarracenia purpurea

We will measure the photosynthetic rates of various parts of the plant

Paul Rink Soil carbon and nitrogen abundance and distribution based on earthworm species assemblage

Carbon and nitrogen isotope measurements will be obtained from soil samples at various depths within mesocosms. These soil samples will be taken from bulk soil and earthworm burrows where applicable. Isotopic abundance measurements from soil samples of a known volume will be used to estimate...

Rene Wiesner Brown Freshwater Benthic Algal Response to Elevated Carbon Dioxide

The effects of elevated atmospheric carbon dioxide on freshwater algae are relatively understudied, though terrestrial plants grown under elevated atmospheric carbon dioxide concentrations have been shown to produce increased biomass, structural compounds and chemical defenses. If similar...

NSF-IGERT
Donna Hollandsworth Phytoplankton and unionid populations in inland lake of Northern Michigan

This study will determine phytoplankton biomass and unionid density, condition, and fitness in northern Michigan inland lakes with and without zebra mussels, and survey which unionids species occur naturally in each lake. Lakes where there is either historical or recent data indicating unionid...

NSF - RET
Brady Hardiman Mechanisms maintaining productivity in a chronosequence of Northern forests

Increasing concentration of atmospheric carbon dioxide (CO2) since the Industrial Revolution is prompting global climate change. Uptake of atmospheric CO2 by forests has the potential to mitigate this rise, but the role of old forests in the global carbon budget is uncertain. Previous work...

NSF-IGERT
Mark Bradley Investigation of mercury LC50, tissue distribution, and neurochemistry in house sparrow (Passer domesticus) embryos

Mercury is a known neurotoxin and a contaminant of concern in the Great Lakes region, placing it at the intersection of toxicology and ecology. Though much studied in aquatic systems, research interest in the behavior of mercury in terrestrial systems is growing. Parallel to this, the subject of...

Leaf physiology response across a disturbance gradient in a temperate deciduous forest: Implications for earth systems modeling

Light response curves were constructed in situ for 117 sapling trees (between 1 and 7 m in height) of four common tree species in a disturbed northern Michigan deciduous forest. Saplings were examined in a manipulated area (University of Michigan Biological Station’s “Forest Accelerated...

National Science Foundation
Detlev Helmig Oxidant and atmospheric aerosol formation from biogenic volatile organic compound emissions

Oxidant and atmospheric aerosol formation from biogenic volatile organic compound emissions.

NSF
Katherine Kavulic Investigation of Neidium in the northern lower and Upper Peninsula of Michigan

For this study we will use the diatom genus Neidium Pfitzer as a proxy for the freshwater diatoms of the region. Past surveys suggest that there are nearly 20 different species of Neidium in the freshwater diatom flora of northern lower peninsula and U.P. of Michigan. Algae and water samples...

UMBS
Determining controls on nutrient uptake in streams

Understanding the role stream ecosystems play in watershed nutrient retention is a critical question in biogeochemistry. Although streams are important sties for nutrient retention and transformation, it is still unclear 1) what are the environmental controls on nutrient uptake and 2) how the...

National Science Foundation Subaward
Michael Muzyka Future Forest Sensitivity to Tropospheric Ozone: Interactive Effects of Climate Warming and Altered Forest Composition

The world is undergoing a series of large changes in climate. For example, temperatures in the Great Lakes region are expected to increase over the next century. Average annual temperature is predicted to rise between 2 to 6 °C by 2100. Precipitation patterns are expected to change significantly...

NSF-REU
Martin Tsz Ki Tsui Mercury isotopes and cycling in forest ecosystems

Mercury is a highly toxic metal and can be found in natural and remote ecosystems due to the long-range atmospheric transport. Mercury stable isotopes is a relatively new tool that can be used to trace mercury cycling and transformation in ecosystems. This study is aimed to better understand the...

Sam Schulte Science in the Wild: An Ethnographic Study of the Material Culture of Ecology

This project will document the objects (tools, collection material, measuring instruments etc.) used by researchers at University of Michigan Biological Station in the process of making scientific claims in order to understand how the values and beliefs held by the researchers are present in...

The University of Chicago
Elisabeth Lehigh Shirey Influence of Changes in Atmospheric Composition on the Growth and Development of Aquatic Organisms

In order to accurately determine how the abiotic environment influences organisms and ecosystems, an interdisciplinary approach combining studies of atmospheric and biospheric conditions with chemical and biological studies would be highly advantageous. Among the ecosystems that will be most...

NSF-IGERT
Reinhard Lakes-Harlan Investigations of the acoustic behavior of the parasitoid fly Emblemasoma auditrix and its host Okanagana rimosa (Homoptera)

Okanagana rimosa is a common cicada in habitats in Northern Michigan including areas close to the Biological Station. Its population is severely affected by a parasitic fungus and a parasitic fly. The biology of this parasitic fly, Emblemasoma auditrix, is in focus of the research project. After...

Modeling Hydrodynamic Stress Limitations on Transpiration

Forest ecosystems world-over are going through rapid structural changes. These crown-scale changes may extend over large spatial domains. However, the consequences of changes to small-scale canopy structure are not currently incorporated in simulations. The goal of this work is to advance the...

NSF Project 60019617
Nancy Tuchman Soil redox levels in wetland ecosystems

We are looking at whether under higher soil redox levels, the process of denitrification is incomplete, therefore emitting N2O rather than N2. Since N2O is a very potent greenhouse gas, incomplete denitrification can be a serious environmental problem. We hypothesize that in great lakes coastal...

NOAA Illinois-Indiana Sea Grant
Naim Edwards Woody debris affects on ground foraging ant distribution across northern Michigan transitioning forest

Ants are an integral component of a variety of ecosystems, and understanding their distribution in specific habitats can be a useful tool for examining the dynamics of certain ecosystems. In this experiment, I will explore and compare the distribution of ants on the forest floor in two forest...

UM-EEB
NSF
Ariana Cerreta Sexually-selected Color Polymorphisms in Damselflies

The goal of this study will be to test the responses of male Enallagma hageni damselflies to various color treatments (outlined below) in conspecific females. Female color polymorphisms exist in E. hageni in the form of blue male mimics and green heteromorphs (Fincke et al. 2007). This male...

University of Oklahoma
Collaborative Research: Biogenic Volatile Organic Compounds and their Impacts in a Changing Temperate Forest

This project is a collaborative effort among colleagues at four different institutions, each of whom has expertise in different aspects of field measurements of BVOC compounds. The work will be conducted at the PROPHET site at the University of Michigan Biological Station (UMBS) and entails...

NSF Atmospheric and Geospace Sciences
Diatoms of the United States

During the summer of 1979, while I was a TA in Freshwater Algae, I collected an epipelic sample from Lake Kathleen. The diatom flora was extremely rich and I have published abstracts based on this material. Additional material is needed from this lake and the surrounding systems so I can...

Self
Rebeka Nadasdi Measurements of meteorological parameters, CO and O3

I will work together with Professor Mary Anne Carroll. We will conduct field measurements of ozone, CO and meteorological parameters. Methods will utilize a UV photometric O3 analyzer and a Gas filter correlation CO analyzer.

NSF