People

Staff

Graduate Students

Undergraduate Students

Lab Alumni

 

Staff

Dr. Knute Nadelhoffer : Director of the University of Michigan Biological Station and Professor of Ecology and Evolutionary Biology

Dr. Knute Nadelhoffer

Director of the University of Michigan Biological Station and Professor of Ecology and Evolutionary Biology

Fields of study
Ecosystem ecology, terrestrial biogeochemistry, global change

Academic background
I received my Ph.D. from the University of Wisconsin-Madison in 1983. I began a postdoctoral fellowship at the Ecosystems Center of Marine Biological Laboratory (Woods Hole, Massachusetts) in 1983. I worked as a Research Scientist at the MBL until June 2002 when I left to spend a year as co-Director of the National Science Foundation's Ecosystem Studies Program. I joined the Univeristy of Michigan as Director of the Biological Station in June 2003 and as Professor in the Department of Ecology and Evolutionary Biology in September 2003. I also served as Panel Manager for the USDA Ecosystems Program in 1992 and was a Fulbright Research Fellow at the Norwegian Institute of Water Research (Oslo) and the Norwegian Institute of Forest Research (Aas) in 1996-97.

Research Interests
I am interested in ecological and biogeochemical processes that determine ecosystem dynamics and functioning at local, regional and global levels. I conduct field studies in temperate forests and arctic tundra to improve understanding of how ecosystems respond to climate change, air pollution and physical disturbance. I am particularly interested in how interactions among soil biota, plants and climate interact to determine ecosystem structure and stability.

knute@umich.edu
Dr. Luke Nave : Associate Research Scientist

Dr. Luke Nave

Associate Research Scientist

Luke Nave joined the lab after completing his Ph.D. and Post-Doctoral studies at The Ohio State University.  He conducted his post-doctoral work in the lab on Nitrogen cycling in the Forest Accelerated Succession Experiment (FASET).  He is currently Coordinator of the International Soil Carbon Network; an Associate Research Scientist at the University of Michigan Biological Station and Department of Ecology and Evolutionary Biology; he is also an Adjunct Instructor at North Central Michigan College.

lukenave@umich.edu
John Den Uyl : Research Laboratory Specialist

John Den Uyl

Research Laboratory Specialist

John Den Uyl joined the lab as a Research Specialist in 2017 after working as a Laboratory Manager in the Department of Ecology and Evolutionary Biology. He received his Bachelor of Science degree from the University of Michigan in 2015 and has spent time as a Research Assistant on a range of projects from the deposition of mercury in northern temperate forests to the evolution of facial recognition in paper wasps. He has also worked as a Teaching Assistant at the University of Michigan Biological Station. John maintains lab and field operations in Ann Arbor and at the Biological Station.

jdenuyl@umich.edu
Renee Kinney : Research Technician

Renee Kinney

Research Technician

Renee Kinney joined the lab as a research technician in 2013.  She is responsible for leaf litterfall, litterbag, and wood decomposition sample processing. Renee is also a summer Maintenance Supervisor at the University of Michigan Biological Station as well as the owner and operator of Kinney Cleaning, Catering, and Lawn Care.

rjpkcat@umich.edu

Graduate Students

Jacqueline Popma : Doctoral Candidate

Jacqueline Popma

Doctoral Candidate

Jacqueline joined the lab from Villanova University where she worked as a Research Technician on biogeochemistry projects in Canada's boreal forest. She received her both Bachelor and Master of Science degrees from Radboud Universiteit Nijmegen in her home country of the Netherlands.  Jacqueline's work in the lab examines deer effects on biogeochemistry across a productivity gradient in Michigan.

popmaj@umich.edu
Buck Castillo : Doctoral Candidate

Buck Castillo

Doctoral Candidate

Born in Los Angeles and raised in Hillsdale Michigan, Buck worked at Ultra Aluminum from 2005 to 2007, attended Jackson Community College from 2007 to 2009, and attained his Bachelor of Science in Environmental Science at the University of Michigan in 2012. Buck completed his work as a Frontiers Masters student characterizing the effects of the Forest Accelerated Succession Experiment (FASET) on soil mycorrhizal and fungal communities at the University of Michigan Biological Station in 2014.  He is a currently a Doctoral Candidate in the lab, co-advised by Dr. Nadelhoffer and Dr. Tim James.

buckcast@umich.edu

Alumni

Jim Le Moine : Lab Manager, 3 May 2004--30 Sep 2017

Jim Le Moine

Lab Manager, 3 May 2004--30 Sep 2017

Jim was Knute's left-hand man in the the lab

jlemoin.um@gmail.com
Nicholas Medina : Former MS Student

Nicholas Medina

Former MS Student

Nicholas Medina worked in the lab on organic matter stability in the UMBS DIRT Experiment.  He received his Master of Science degree for his work in 2016. Nicholas is now a Doctorate student in Dr. John Vandermeer's Lab at the University of Michigan.

nmedina@umich.edu
Mark Fate : Field and Lab Technician, June 2012--2014

Mark Fate

Field and Lab Technician, June 2012--2014

Mark Fate received his B.A. in Philosophy from the University of Michigan in 2013 and is pursuing a B.S. in University's Program in the Environment (PitE).  Prior to enrolling at UM, Mark attended Auburn University and toured North America as the drummer in The Snake The Cross The Crown.  Mark was responsible for soil sample processing in the lab and has cored soils across the Burn Chronosequence at the UM Biological Station. He moved on to Zingerman's after his time in the lab.

markfate@umich.edu
Susan Cheng : Doctoral Candidate, 2010-2016

Susan Cheng

Doctoral Candidate, 2010-2016

Susan received her B.A. in Environmental Science from Columbia University in 2007. While there, she worked on a senior thesis project quantifying the impact of traffic on particulate air pollution around elementary schools. After graduation, she worked in environmental consulting and at Cornell University Cooperative Extension bringing urban ecology programs to New Yorkers. Her dissertation used field measurements, satellite data, and models to study how clouds influence forest light environments and photosynthesis so we can better represent land-atmosphere interactions in climate models. Susan finished her doctorate in 2016 and moved to a Post-doctoral position at Cornell.

sjc265@cornell.edu
James Kupihea : Frontiers Master's Student

James Kupihea

Frontiers Master's Student

James K. earned his B.A. in non-fiction film and B.S. in botany and ecology from Evergreen State College. After working at Archbold Research station on plant competition and snake telemetry, he joined the lab as a Frontiers Master's student in 2013.  His work focused on Carbon and Nitrogen budgets of speckled alder (Alnus incana ssp. rugosa). stands. He moved on to the Unversity of California, Merced after his time in the lab.

jkupihea@ucmerced.edu
Dr. Jasmine Crumsey : Ph.D. 2008-2014

Dr. Jasmine Crumsey

Ph.D. 2008-2014

Dr. Jasmine Crumsey conducted her dissertation research on the effects of earthworm communities on soil Carbon and Nitrogen cycling.  Her studies include an ecosystem scale survey, natural abundance and isotopically labeled mesocosm experiments (Worm Pail 1.0 and 2.0), and community/carbon compound characterization in the DIRT experiment.  After successfully defending her dissertation in 2014, Dr. Jasmine Crumsey went to Cornell for Post-Doctoral research with Dr. Jed Sparks.

jc2779@cornell.edu
Serge Farinas : Frontiers Master's Student, 2009--2013

Serge Farinas

Frontiers Master's Student, 2009--2013

Farinas spent the summer of 2009 at the UMBS doing a research project as part of the Frontiers Master's program.  He was coadvised by Dr.s Deborah Goldberg and Knute Nadelhoffer for his Master's work on anthropogenic impacts on alpine plant community composition, diversity, distribution, and effects on soil Carbon, Nitrogen pools.  Serge moved to Leeds, England in 2014.

sfarinas@umich.edu
Apolline Auclerc : Post-Doctoral Researcher, Jul 2012--Sep 2013

Apolline Auclerc

Post-Doctoral Researcher, Jul 2012--Sep 2013

Apolline joined the lab in July 2012 while completing her PhD from the University of Lorraine (France).  Her dissertation was in soil ecology on the impacts of liming on soil invertebrates.  Apolline studied the role of invertebrates in the degradation of isotopically labeled black carbon for the Black Carbon project at the UM Biological Station.  She started an Assistant Professor position at the University of Lorraine in the LSE (Laboratory of Soils and Environment, France) as a soil biologist specializing in invertebrates in early September 2013.

apolline.auclerc@univ-lorraine.fr
Peter Hans Ward : Research Technician, Aug--Sep 2013

Peter Hans Ward

Research Technician, Aug--Sep 2013

Oh, Peter joined the lab for the 1-year Black Carbon mesocosm harvest and initial processing in August 2013.  Graduating from UM in 2013 with dual Bachelor of Arts degrees in Political and Environmental Science, Peter is currently a coach and operations coordinator at the Loveland Ski Club and is the co-owner and Director of Food and Beverage at Humble Plum Kitchens.

p.hans.ward@gmail.com
Tim Ludington : Research Technician, Summer 2013

Tim Ludington

Research Technician, Summer 2013

Tim Ludington joined the lab for the summer 2013 field season.  Prior to joining the lab Tim was a mechanic in the US Air Force and was a student in the Spring 2013 Ecology class where he studied soil invertebrate diversity across the Burn Chronosequence at the UM Biological Station.  Tim's duties in the lab included processing soils from the Burn Chronosequence, measuring soil respiration rates, and measuring tree diameters.  After graduating in 2014, Tim pursued his Master's degree at Bowling Green State University with Paul Moore.

tsludi@umich.edu
John Menz : REU Summer 2013

John Menz

REU Summer 2013

John Menz joined the lab in Summer 2013 for his Research Experience for Undergraduates at the UM Biological Station.  He measured abundance of the invasive earthworm Lumbricus terrestris in the Forest Accelerated Succession Experiment (FASET) and their effects on soil Carbon and Nitrogen pools, Carbon mineralization rates, Nitrogen mineralization rates, and Nitrification rates.  He continued his studies of Biology at Rhodes College, where he also managed a GIS laboratory.

johnfmenz@gmail.com
Stephanie Patton : REU Summer 2013

Stephanie Patton

REU Summer 2013

General Patton joined the ranks of the Nadelhoffer Lab in Summer 2013 for a Research Experience for Undergraduates.  She built a chronosequence of Carbon accumulation in forest aboveground biomass and belowground to one meter.  The General is writing a manuscript with Dr. Luke to submit to the Canadian Journal of Forest Research.  She continued her studies at Illinois Wesleyan University after her time in the lab.

step.patton1212@gmail.com
Tatia Bauer : Field and Lab Technician

Tatia Bauer

Field and Lab Technician

Tatia joined the lab after graduating from UM in Spring 2013 with a dual B.S. in Ecology & Evolutionary Biology and Program in the Environment. Tatia processed soil samples (aka root picking) from the UM Biological Station (UMBS) Burn Chronosequence.  After working in the Nadelhoffer Lab, Tatia spent the summer with Robert Fahey at UMBS collecting data for his research in Forest Community Ecology. She is currently working as a crew leader for the Minnesota Conservation Corps in Bemidji, MN.

tafbauer@umich.edu
William Marshall : REU Summer 2013

William Marshall

REU Summer 2013

William Marshall joined the lab for summer 2013 as an ED-QUE2ST Research Experience for Undergraduates student. He worked on the Black Carbon project to measure temperature sensitivity of soil respiration across the Black Carbon treatments. After finishing his project in the lab, William Marshall continued as a Biology student at UM.

whmarsh@umich.edu
Jeannie Wilkening : REU Summer 2013

Jeannie Wilkening

REU Summer 2013

Jeannie joined the lab as a Research Experience for Undergraduates (REU) student for the summer of 2013.  She is an Chemical Engineering undergraduate at the University of Arizona who is minoring in Art History and Environmental & Water Resource Economics. Jeannie worked with Susan Cheng at the UM Biological Station to compare the photosynthetic response of early- and late- successional trees to changing carbon dioxide concentrations.  Their work will be submitted for publication in 2014.

jwilkening@email.arizona.edu
Michelle Busch : Undergraduate Student Researcher, Jan--May 2012

Michelle Busch

Undergraduate Student Researcher, Jan--May 2012

As a sophomore at the University of Michigan, Michelle assisted Jasmine Crumsey with her PhD project in the winter and spring of 2012. She processed soils from Jasmine's quantitatively harvested earthworm mesocosms.  After working in the lab, Michelle worked with Dr. Deborah Goldberg's lab to maintain marsh mesocosm experiment (a.k.a. Swamp Pot 2.0) at the UM Biological Station.  She currently works in Dr. Brad Cardinale's lab as an undergraduate assistant for an algal biofuels project.

buschmh@umich.edu
Lena Cruz : Undergraduate Student Researcher, Summer 2013

Lena Cruz

Undergraduate Student Researcher, Summer 2013

Lena Cruz joined the lab as a "Root-picker" in the summer of 2012 after taking Spring courses at the UM Biological station.  Following her root picking adventures, Lena did a Research Experience for Undergraduates in Mexico in Summer 2013 through the UM ED-QUE2ST program and spent the Winter 2014 semester studying in Granada, Spain.

lena.cruz6@gmail.com
Caleigh Chong : Undergraduate Student Researcher, Sep 2012--May 2013

Caleigh Chong

Undergraduate Student Researcher, Sep 2012--May 2013

Caleigh joined the lab as part of the Undergraduate Research Opportunity Program (UROP) from September 2012 through May 2013.  She sampled and processed soils and litterfall samples from the Burn Chronosequence at the UM Biological Station.  Caleigh investigated charcoal size and mass distribution across the chronosequence for her UROP project.  She continued her studies of Electrical Engineering after finishing in the lab.

cachong@umich.edu
Rachel Pad : Undergraduate Student Researcher, Sep 2012--May 2013

Rachel Pad

Undergraduate Student Researcher, Sep 2012--May 2013

rPad is a Psychology major and Program in the Environment minor at UM.  Prior to joining the lab as part of the Undergraduate Research Opportunity Program (UROP), rpad was a Planet Blue Student Ambassador and a Peer Mentor for the Univiersity's Women In Science and Engineering Residence Program.  rPad's UROP project from September 2012 to May 2013 investigated the effects of litterfall composition on macrofauna richness, diversity, and abundance across the Burn Chronosequence at the UM Biological Station (UMBS).  Her poster with UROP comrade Renee Veresh won a blue ribbon at the UROP symposium.  rPad developed a passion for bird watching after taking Biology of Birds at UMBS in Spring Semester 2013. She intends to do graduate work in environmental psychology after graduating in 2015.

rapad@umich.edu
Cristina Shoffner : Undergraduate Student Researcher, Sep 2012--May 2013

Cristina Shoffner

Undergraduate Student Researcher, Sep 2012--May 2013

Cristina joined the lab as part Undergraduate Research Opportunity Program (UROP). She investigated changes in leaf area and root mass across the Burn Chronosequence at the UM Biological Station (UMBS) for her UROP project.  Cristina continued pursuing her dual degree, B.S. in Spanish, and Earth & Environmental Science after her time in the lab. She worked for the National Park Service in Summer 2013.

cshoffne@umich.edu
Will Schrier : Undergraduate Student Researcher, Jan--May 2013

Will Schrier

Undergraduate Student Researcher, Jan--May 2013

Will is an Ecology and Evolutionary Biology and Program in the Environment double major at UM.  He joined the lab as part of the Undergraduate Research Opportunity Program (UROP) from January to May 2013.  Will investigated changes in leaf area and root mass across the Burn Chronosequence at the UM Biological Station (UMBS) for his UROP project. Following his time in the lab, Will studied ethnobotany at UMBS and volunteered to improve healthcare accessibility for a month in Peru.  Will is a member of the UM Permaculture Design Team and plans to take courses at UMBS in summer 2014 and graduate in May of 2015.

wschrier@umich.edu
Renee Veresh : Undergraduate Student Researcher, Jan--May 2013

Renee Veresh

Undergraduate Student Researcher, Jan--May 2013

Renee joined the lab in January 2013 as part of the Undergraduate Research Opportunity Program (UROP).  Her project investigated the effects of litterfall composition on macrofauna richness, diversity, and abundance across the Burn Chronosequence at the UM Biological Station (UMBS).  Renee's poster with UROP comrade rPad won a blue ribbon at the UROP symposium. Graduating in May 2014 with a Bachelor of Science in the Earth and Environmental Sciences, Renee has a strong background in the physical sciences. She has two minors, in both chemistry and geology, and this has greatly aided her forays into the study of the natural world. Past research experience includes medicinal nuclear chemistry and carbon and nitrogen cycling in forest environments at the University of Michigan, and she is currently researching mercury contamination through environmental isotope geochemistry.

reneeveresh@gmail.com
Clarisse Betancourt Román : Summer project for Frontiers Master's Student

Clarisse Betancourt Román

Summer project for Frontiers Master's Student

After finishing her B.S. at the University of Puerto Rico, Clarisse worked in the lab in Summer 2012 as part of the Frontiers Master's program at UM.  For her summer project, Clarisse worked with Dr. Luke Nave and traced the movement of Nitrogen from soil pools through fungal mycorrhizae and into the foliage of oak trees using15N at the UM Biological Station.  After finishing her summer project, Clarisse conducted her Master's work with Dr. Tim James on the evolution of virulence in the amphibian chytridiomycosis pathogen.  She compared virulence of three genotypes of this fungus for wood frogs (Rana sylvatica) and completed her degree in 2014.

cmbeta@umich.edu
Gabe Abud : REU Summer 2012

Gabe Abud

REU Summer 2012

Gabe joined the lab from the College of Wooster for a Research Experience for Undergraduates project in the Summer of 2012.  Working with Dr. Luke Nave, Gabe measured mycorrhizal colonization of roots in the Forest Accelerated Succession Experiment (FASET) at the UM Biological Station.

gabriel.jabud@gmail.com
Dear Nicole : Undergraduate Student Researcher, Sep 2011--May 2013

Dear Nicole

Undergraduate Student Researcher, Sep 2011--May 2013

Dear Nicole joined the lab as part of the Undergraduate Research Opportunity Program (UROP) in September 2011.  Her work examined canopy tree competition in the Forest Accelerated Succession Experiment (FASET) at the UM Biological Station.  She analyzed tree ring growth and stable isotopy in bole wood and foliage.  Dear Nicole was awarded a UROP Summer Biomedical & Life Sciences Fellowship for Summer 2012 in which she assessed seedling competition for light in FASET.  She recensused seedlings and measured light with hemispherical photography for her independent project.  After her time in the lab, Dear Nicole worked as a Research Assistant in the Duhaime Microbial Ecology Lab at UM for the duration of her undergraduate degree where she designed and conducted an independent research project on viral invasion of a nutrient deprived bacterial host.  She also interned with the National Ecological Observatory Network (NEON) in Boulder, CO in Summer 2013 where she analyzed and interpreted metagenomic data to reveal significant shifts in soil community structure and function providing insight into how soil communities respond to changing ecosystems.  She also validated NEON sampling design and the ability of data collected to address biologically meaningful questions.  Her work helped to improe data collection efficiency and reduced sampling costs.  She presented her results at the National Center for Atmospheric Research and the Ecological Society of America. Dear Nicole continued studies for a Master's of Public health at the UM School of Public Health International Health Epidemiology Program after graduating with a Microbiology degree in May 2014.

dearnic@umich.edu
Nick Van Dyke : Undergraduate Student Researcher, Summer 2011. Research Technician, Summer 2012

Nick Van Dyke

Undergraduate Student Researcher, Summer 2011. Research Technician, Summer 2012

Nick joined the lab in Summer 2011 with his Ecology Class project.  His group investigated hyphal abundance and isotopic signatures in the Forest Accelerated Succession Experiment (FASET).  With Dr. Luke Nave, classmate Jules Cooch, and their coauthors, Nick published the results from his work in  “Nitrogen Uptake by Trees and Mycorrhizal Fungi in a Successional Northern Temperate Forest: Insights from Multiple Isotopic Methods" in Ecosystems: Volume 16, Issue 4 (2013). Nick continued to work with the lab in Summer 2012 as a Research Assistant.  His tasks included collecting species-specific root, sampling soils, and measuring diameters of canopy and subcanopy trees.  Following work in the lab Nick studied Maple tar spot fungi with Dr. Tim James at UM and graduated from UM in 2012.  Nick tutors math and science at Washtenaw Community College and tends bar at the Jolly Pumpkin in Ann Arbor.

njvd@umich.edu
Jules Cooch : Undergraduate Student Researcher, Summer 2011

Jules Cooch

Undergraduate Student Researcher, Summer 2011

Jules joined the lab in Summer 2011 with his Ecology Class project.  Her group investigated hyphal abundance and isotopic signatures in the Forest Accelerated Succession Experiment (FASET).  With Dr. Luke Nave, classmate Nick Van Dyke, and their coauthors, Jules published the results from his work in  “Nitrogen Uptake by Trees and Mycorrhizal Fungi in a Successional Northern Temperate Forest: Insights from Multiple Isotopic Methods" in Ecosystems: Volume 16, Issue 4 (2013).  Jules also helped with soil sampling across the Burn Chronosequence at the UM Biological Station in October 2012.  After her time in the lab, Jules did a Research Experience for Undergraduates on leaf-cutting ant altereration of soil biogeochemistry at La Selva Biological Station, Costa Rica.  She graduated from the Program in the Environment in 2012 and characterized soil microbial communities with Dr. Don Zak at UM.  Jules currently teaches yoga at the Ann Arbor Wellness Collective.

julescooch@gmail.com
Sterling Atkins : REU Summer 2011

Sterling Atkins

REU Summer 2011

Sterling Atkins joined the lab from Morehouse College as an ED-QUE2ST REU student.  With his mentor Dr. Jasmine Crumsey, he characterized earthworm communities across a gradient of leaf litter loading in the UM Biological Station DIRT experiment.  After completing his REU project, Sterling continued to study Biology with a focus on medicine.  He conducted research on liver cancer at the Unversity of Southern California School of Pharmacy in summer 2012 and Neuroscience & Opthamology at the University of California San Francisco Koret Vision in summer.  Graduating in 2013, Sterling continued MD/Ph.D studies.

atkinssterling14@gmail.com
Matt Miyano : Undergraduate Student Researcher, Sep 2011--May 2012

Matt Miyano

Undergraduate Student Researcher, Sep 2011--May 2012

Matt is a Mathematical Biology/Statistics double major UM.  Prior to joining the lab Matt was a pickle sales specialist with McClure's Pickles. He worked in the lab from September 2011 to May 2012 as part of the Undergraduate Research Opportunity Program (UROP). Matt examined the resilience of leaf area, root mass, and soils to disturbance in the Forest Accelerated Succession Experiment (FASET) at the UM Biological Station.  His poster won a blue ribbon at the UROP symposium.  After leaving the lab, Matt worked as a docent at the Natural History Museum in New York.

mqmiyano@umich.edu
Sara Shamaskin : Undergraduate Student Researcher, Sep 2011--May 2012

Sara Shamaskin

Undergraduate Student Researcher, Sep 2011--May 2012

Shams joined the lab as part of the Michigan Research Community (MRC) program in September 2011.  She assessed tree nitrogen allocation to leaves and roots with a stable isotope tracer in the Forest Accelerated Succession Experiment (FASET) at the UM Biological Station.  Shams continued with her Evolutionary Anthropology studies at UM after completing her MRC project.

scsham@umich.edu
Emily Thompson : Undergraduate Student Researcher, July-Dec 2011

Emily Thompson

Undergraduate Student Researcher, July-Dec 2011

Emily joined the lab in summer 2011 for an independent research project.  She analyzed root decomposition rates in the Forest Accelerated Succession Experiment (FASET) at the UM Biological Station.

emilsuza@umich.edu
Sarah Liao : Undergraduate Student Researcher, Sep 2010--May 2011

Sarah Liao

Undergraduate Student Researcher, Sep 2010--May 2011

Sarah Liao joined the lab in September 2010 as part of the Undergraduate Research Opportunity Program (UROP).  She examined changes in competition for N by canopy trees in the Forest Accelerated Succession Experiment (FASET).  Her work included measuring enrichment of foliage, bark, and wood as well as stem growth rates from tree cores to examine if the N cycle or tree growth was been perturbed by the girdling treatment.  After finishing with the lab, Sarah Liao continued her studies at UM and graduated December 2012 with a dual B.S. degree in Environmental Science (Program in the Environment) and Anthropology.  She earned her Master of Public Health degree from UM School of Public Health in May 2014 with a Toxicology specialization from the Department of Environmental Health Sciences.  Sarah was a Research Assistant in the Loch-Caruso Reproductive Toxicology Lab in the Department of Environmental Health Sciences and was a Toxicology Intern at ToxServices, a toxicology risk assessment consulting firm.

sarahjliao@gmail.com
Spencer Shepherd : Undergraduate Student Researcher, Sep 2010--May 2011

Spencer Shepherd

Undergraduate Student Researcher, Sep 2010--May 2011

Originally from Novi, MI. Spencer Shepherd joined the lab in September 2010 as part of the Undergraduate Research Opportunity Program (UROP).   He calculated ecosystem recovery of 15N label in the Harvard Forest Chronic N Amendment study for samples collected in 2008--2010.  After finishing his work in the lab in 2011, Spencer continued his studies at UM and graduated in Spring 2013 with a B.S. in Biochemistry. Spencer is presently an M.D. candidate at the Michigan State University College of Human Medicine and will become Dr. Spencer Shepherd in 2017.

spencerdshepherd@gmail.com
Erin Skallerup : Undergraduate Student Researcher, Sep 2010--May 2011

Erin Skallerup

Undergraduate Student Researcher, Sep 2010--May 2011

Erin Skallerup joined the lab in September 2010 as part of the Undergraduate Research Opportunity Program (UROP).  She examined changes roots in the UM Biological Station DIRT experiment.  After finishing with the lab in 2011, Erin continued her studies in Ecology & Evolutionary Biology and Education at UM.  She graduated in May 2012 and attained her Master's of Education from Houston Baptist University in 2013.

Samantha Yassine : Undergraduate Student Researcher, Sep 2010--May 2011

Samantha Yassine

Undergraduate Student Researcher, Sep 2010--May 2011

Sam joined the lab in September 2010 as part of the Undergraduate Research Opportunity Program (UROP).  She examined changes in competition for Nitrogen by canopy trees in the Forest Accelerated Succession Experiment (FASET).  Her work included measuring enrichment of foliage, bark, and wood as well as stem growth rates from tree cores to examine if the N cycle or tree growth was been perturbed by the girdling treatment.  She graduated from UM in 2014.

sgyassin@umich.edu
Zach Zeneberg : Research Technician, Aug 2009--May 2010

Zach Zeneberg

Research Technician, Aug 2009--May 2010

Zach joined the lab as a research technician in August 2009.  Prior to joining the lab, Zach worked as a teaching assistant at the UM Biological Station, worked in a California Winery, worked for California Light and Power cruising power corridors, and graduated from UM with an Environmental Science B.S.  His tasks in the lab included soil processing and managing the soil incubations from the 5-year UMBS DIRT sampling.  After his time in the lab, Zach worked as a naturalist at the Leslie Science Center; earned his Professional Certification in Applied Behavioral Analysis at Utah State University; trained and worked with Steve Martin’s Natural Encounters, Inc. as an animal trainer in free-flighted bird shows at Disney’s Animal Kingdom in Orlando, Florida; completed a Graduate Certificate in Nonprofit Management at EMU; and interned at the Huron River Watershed Council.

Bryce Bredell : Undergraduate Student Researcher, Summer 2009

Bryce Bredell

Undergraduate Student Researcher, Summer 2009

Bryce worked with Derek Ager and Jasmine Crumsey in summer 2009 as a member of the A-Team.  They investigated earthworm community composition and diet using natural abundance values for C and N stable isotopes.  After his time in the lab, Bryce completed his B.S. in Ecology and Evolutionary Biology from UM in Spring 2011 and his M.S. Molecular and Integrative Physiology June 2013.  He is also a licensed Emergency Medical Technician.  Bryce currently works as a research associate and lab manager at the Shah Lab in the Physiology department at U of M.

bxavierb@umich.edu
Derek Ager : Undergraduate Student Researcher, Summer 2009

Derek Ager

Undergraduate Student Researcher, Summer 2009

Derek Ager worked with Bryce Bredell and Jasmine Crumsey in summer 2009 as a member of the A-Team.  They investigated earthworm community composition and diet using natural abundance values for C and N stable isotopes. After his time with the lab, Derek completed his Ecology & Evolutionary Biology Bachelor of Science Degree at UM.  He worked with Dr. Deborah Goldberg's marsh mesocosm experiment and at the US EPA's National Vehicle and Fuel Emissions Laboratory.  Derek then pursued a Master's of Public Health at UM focusing on environmental policy, air and water quality management and analysis, and occupational and environmental exposure assessment.  He moved to the a ‎Physical Scientist position at the EPA's Great Lakes National Program Office in Chicago.

dager@umich.edu
Alexis DeGabriele : Undergraduate Student Researcher, Sep 2008-- Sep 2009

Alexis DeGabriele

Undergraduate Student Researcher, Sep 2008-- Sep 2009

Alexis DeGabriele joined the lab in September 2008 as part of the Undergraduate Research Opportunity Program (UROP).  Alexis measured tree growth in the Harvard Forest Chronic N Amendment study for her UROP project.  She continued her work with tree cores in Summer 2009 for her Ecology class project at the UM Biological Station.  Alexis measured tree core growth in response to the girdling treatment in the Forest Accelerated Succession Experiment (FASET) for that work.  Alexis transferred to Michigan Technological University and graduated with a B.S. in Applied Ecology in Spring 2013.

Rahul Gondalia : Undergraduate Student Researcher, Jun 2008--Dec 2009

Rahul Gondalia

Undergraduate Student Researcher, Jun 2008--Dec 2009

Rahul was an Ecology & Evolutionary Biology and a Program in the Environment at UM.  He spent two summers at the UM Biological Station where he took classes and worked as a field technician Nadelhoffer Lab. His tasks included ion exchange resin preparation, lysimeter maintenance, and soil respiration measurements.  After graduating in 2010, Rahul continued to a Master of Public Health program at Emory University where he studied environmental health and epidemiology. Rahul worked as a healthcare data analyst for Acumen, LLC from 2012 to 2014 in the San Francisco Bay Area.  He continued in public health by pursuing his doctorate in fall 2014 from North Carolina at Chapel Hill where he studies the intersection of air pollution, genomics, and cardiovascular health.

rahgonda@gmail.com
Kate Heflick : Research Technician, Summer 2009

Kate Heflick

Research Technician, Summer 2009

Kate Heflick joined the lab in summer 2009 as an undergraduate research assistant.  She worked with Jasmine Crumsey to sample earthworm communites at the UM Biological Station.  After graduating from UM, Kate trained at the Michigan State University Student Organic Farm and held the Propagation Manager and Assistant Instructor there for the 2013 season.

Corey Higley : Undergraduate Student Researcher, Summer 2009

Corey Higley

Undergraduate Student Researcher, Summer 2009

Corey worked in the lab as a field technician in Summer 2008.  She helped to measure tree diameters and install minirhizotron tubes in the Forest Accelerated Succession Experiment (FASET).  After finishing work in the lab, Corey graduated from the Program in the Environment at UM and her Master's in Fisheries Managment with Dr. Dan Hayes at Michigan State University.  She continued her Fisheries studies at MSU for her doctorate.

corrine.higley@gmail.com
Amanda Do : Undergraduate Student Researcher, Sep 2009--May 2010

Amanda Do

Undergraduate Student Researcher, Sep 2009--May 2010

Amanda joined the lab as part of the Undergraduate Research Opportunity Program (UROP) at UM.  She analyzed changes in soil Carbon and Nitrogen stocks after 5-years of treatments in the UM DIRT project.  Amanda graduated from UM in 2013 with a German degree.

mandado118@yahoo.com
Amanda Brenske : Undergraduate Student Researcher, Sep 2009--May 2010

Amanda Brenske

Undergraduate Student Researcher, Sep 2009--May 2010

Amanda joined the lab as part of the Undergraduate Research Opportunity Program (UROP) at UM.  She analyzed changes in soil Carbon and Nitrogen stocks after 5-years of treatments in the UM DIRT project.  Amanda graduated from UM in 2013 with a Pre-Pharmacy degree.  She continued to pursue her doctorate at the Wayne State University Pharmacy School.

 amanda.brenske@wayne.edu
Chris Bogdan : Undergraduate Student Researcher, Sep 2009--May 2010

Chris Bogdan

Undergraduate Student Researcher, Sep 2009--May 2010

Chris worked in the lab as part of the Undergraduate Research Opportunity Program (UROP) from September 2009 to May 2010.  For his project, Chris studied changes in the Carbon and Nitrogen cycles as indicated by shifts in Nitrogen availability, and shifts in foliar and fungal stable isotope natural abundance associated with the Forest Accelerated Succession Experiment (FASET) at the UM Biological station.  Chris subsequently graduated from UM (2013, Neuroscience) and started a caffeinated baked goods company, Get up and Go.

chris@getupandgobaked.com
Kelly McClure : Undergraduate Student Researcher, Sep 2009--May 2010

Kelly McClure

Undergraduate Student Researcher, Sep 2009--May 2010

Kelly worked in the lab her sophomore year as part of the Undergraduate Research Opportunity Program (UROP) from September 2009 to May 2010.  For her project, Kelly studied changes in the Carbon and Nitrogen cycles as indicated by shifts in Nitrogen availability, and shifts in foliar and fungal stable isotope natural abundance associated with the Forest Accelerated Succession Experiment (FASET) at the UM Biological Station.  Kelly studied at the UM Biological Station in 2010, and graduated with a B.S. in Ecology & Evolutionary Biology in 2012. After graduating, she interned at the U.S. Geological Survey office in Ann Arbor working for Kevin Keeler. She concurrently assisted Dr. Daniel Allen, a postdoctoral fellow collaborating with Dr. Brad Cardinale, in July. She worked at Michigan Mott Children's Hospital from late 2012 through June 2014 before attending medical school at Michigan State University.

mcclure.kel@gmail.com
Dana Thomas : Graduate Student, 2009--2011

Dana Thomas

Graduate Student, 2009--2011

Dana completed my B.A. in Biology at Vassar College in 2006. Following graduation, she spent 2 years living and working in Wyoming and Colorado, first as an intern with the Student Conservation Association, then as a National Park Service Biological Science Technician. Dana was co-advised by Dr.s Knute Nadelhoffer and Don Zak and completed her Master's thesis in 2011.

thdana@umich.edu
Deborah Hudleston : Graduate Student, 2006--2008

Deborah Hudleston

Graduate Student, 2006--2008

Deborah Hudleston earned her Master's in the lab.  She was co-advised by Drs. Knute Nadelhoffer and Don Zak. Her research examined how elevated atmospheric Carbon Dioxide and tropospheric Ozone alter belowground plant litter biochemistry and how soil microbial community composition influences ecosystem nitrogen availability. Her work includes measuring the pools of chitin in soil; measuring the activity of chitin degrading enzymes; genetically ascertaining the composition of the microbial community that has the ability to degrade chitin, and also the composition of those that are actively producing chitinolytic enzymes; and isotopically labelling fungal hyphae to trace the flow of Nitrogen from chitin to heterotrophic decomposers and inorganic N. After completing her degree, Deborah returned to her hometown of Minneapolis works at the Universiy of Minnesota as a Knowledge Transfer Director/Science Writer in the National Center for Earth-surface Dynamics.

Alex Bajcz : Undergraduate Student Researcher, Sep 2007--May 2009

Alex Bajcz

Undergraduate Student Researcher, Sep 2007--May 2009

Alex spent roughly two and a half semesters with the lab from 2007 to 2009.  He processed leaf and down woody debris samples in the Dirty Lab and inhaled quite a bit of dust! Graduating in 2010 with a BS in Environmental Science with Honors, Alex continued at UM for his Masters in Terrestrial Ecology (2012), from which he published two articles in Rhodora. He completed his PhD in Ecology and Environmental Science at the University of Maine, and then a Post-Doctoral position in Soil Ecology at the University of Wisconsin-Madison.

 

Bajcz475@gmail.com
Matt Pierle : Field and Lab Technician, 2006--2009

Matt Pierle

Field and Lab Technician, 2006--2009

In the lab Matt was a year-round lysimeter sample collector and processor.

Matt is currently a graduate student in the University of Vermont's Field Naturalist / Ecological Planning (FNEP) Masters Program. Project work is in collaboration with Audubon New York and focuses on how different forestry treatments affect habitats used by indicator bird species in the Northern Forest Avifauna Biome.

Prior Project Coordinator with the Burt Lake (Cheboiganing) Band of Ottawa & Chippewa Indians documenting native Ottawa/Anishinaabemowin language and Traditional Ecological Knowledge keepers.

Served as Teaching Assistant at UMBS for field courses including: General Ecology, Wetland Ecology, Ethnobotany, Introduction to Natural Sciences, and Biology of Insects.

Worked at Research Technician for various research projects studying elevated carbon dioxide under Dr. Don Zac, Dr. Nancy Tuchman and numerous graduate students.

Studied Horticulture and Landscape Architecture at the University of Applied Sciences, Erfurt, Germany. 1999-2000.

B.S. in Environmental Sciences and Natural History Writing with emphasis on "Agriculture in the Age of Ecology" from the University of Michigan, 1998.

Participant in the 2nd Natural History Writer Project (NHWP), fall semester 1996 at UMBS.

Studied at the Instituto Uruguay, Barcelona, Spain, 1993-94.

mattpierle@gmail.com
Anthony Arnold : Undergraduate Student Researcher, Sep 2005--May 2007

Anthony Arnold

Undergraduate Student Researcher, Sep 2005--May 2007

Anthony Arnold worked in the Nadelhoffer Lab as an undergraduate student in 2005.  He helped process soil samples for the 1-year sampling of the UMBS DIRT project.  In 2006 he conducted a study on an island in Lake Michigan near the town of Epoufette in Michigan's Upper Peninsula. The study goal was to assess the impact of past cormorant nesting on soil Nitrogen.  He used 15N  mass balance to assess the amount of cormorant-derived N in soils and regenerating vegetation. Anthony worked as a Freelance Scientific Researcher and Wildlife Photographer in Pennsylvania on a raptor survey for a Wind Power company after he left the lab. He also is the co-director/founder of the nonprofit Ho Avy sustainable development project in Madagascar with Dr. Martina Petru.

Ryan Kenny : Undergraduate Student Researcher, Oct 2005--Aug 2007

Ryan Kenny

Undergraduate Student Researcher, Oct 2005--Aug 2007

Dr. Ryan Kenny grew up in Saginaw, MI and while majoring in biology at the University of Michigan he worked in the Nadelhoffer Lab from 2005 to 2007. His duties in the lab included acid washing/prepping glassware and archiving samples from the DIRT project. After graduation from the University of Michigan, Kenny left the Nadelhoffer Lab to work for Dow/Wolff Cellulosics in Midland, MI from 2007 to 2010. While at Dow he worked as a research technician working on R&D projects involving non-active pharmaceutical ingredients and their desired properties in drug tablet formulations. In 2010 Kenny moved to Las Vegas, NV to attend medical school at Touro University Nevada School of Osteopathic Medicine. He will graduate from medical school in June of 2014 and he plans to begin his residency in emergency medicine in July of 2014 back in Michigan.

In his free time, Kenny enjoys road cycling and racing. He is also an avid outdoor photographer, which gives him an excuse to, as Muir would say, "break clear away, once in awhile, and climb a mountain or spend a week in the woods."

ryanakenny@gmail.com
Dr. Andrew Kimball : Undergraduate Student Researcher, 2005--2007

Dr. Andrew Kimball

Undergraduate Student Researcher, 2005--2007

Andrew was a Biochemistry undergraduate student in the Chemistry Department at the UM who volunteered in the lab from 2005 to 2007.  He was responsible for quality control of the sample archive labels. He also prepared samples for elemental analysis and cleaned glassware. In addition to volunteering in the Nadelhoffer Lab, Andrew worked at the UM hospital in the Post-Anesthesia Care Unit, and handled hazardous waste at Cayman Chemical Research and Development. Andrew attended UM Medical school after his time in the lab and is currently a surgical resident at the UM Surgery Department.  His medical research includes the etiology of rheumatoid arthritis/autoimmune disease and the etiology of deep vein thrombosis in sepsis.

askiball@umich.edu
Herschel Grisby : REU Summer 2006

Herschel Grisby

REU Summer 2006

Herschel joined the lab for his Research Experience for Undergraduates (REU) project at the UM 2006. He assessed soil organic matter content and enzyme activities in the UMBS DIRT plots. After finishing his REU work, Herschel continued his Biology degree at Westminster University of Missouri and currently works for Stryker Corp. a biomedical supply company.

herschel.grisby@stryker.com
Alex Smith : Undergraduate Student Researcher, Summer 2006

Alex Smith

Undergraduate Student Researcher, Summer 2006

Alex joined the lab for the summer of 2006 as a field research technician.  Alex captured images from the minirhizotrons at th UM Biological Station DIRT project. He then traced and quantified roots in the images to compare root activity between treatments. After finishing his root project, Alex continued as a Biology undergraduate student at UM.  He worked in the Molecular, Cellular, & Developmental Biology Department to construct a phylogeny of nsp2 - a plant gene which is involved in the formation of symbiotic associations between legumes and rhizobia bacteria. After graduating in Spring 2008, Alex pursued his Master's degree with Dr. Heather Reynolds at Indiana University and his Ph.D at Michigan State University in the Plant, Soil, and Microbial Sciences department.

smitha48@msu.edu
John Keeton : Undergraduate Student Researcher, 2005--2006

John Keeton

Undergraduate Student Researcher, 2005--2006

John Keeton worked in the Nadelhoffer lab in 2005 and 2006.   He started as a lab assistant before conducting an independent research project. John's research involved analysing UMBS DIRT soils for C and N to assess treatment affects following one year of manipulation. John graduated with a Biology degree in Spring 2006 and his Doctor of Dental Science from the UM School of Dentistry.  He is currently an dentist with the US Army in Fort Drum, New York.

Eileen Quintero : Undergraduate Student Researcher, Sep 2005--May 2006

Eileen Quintero

Undergraduate Student Researcher, Sep 2005--May 2006

Eileen Quintero worked in the Nadelhoffer Lab in 2005 as an undergraduate student in Environmental Science at the UM. She prepared vegetation and soil samples for elemental analysis, sorted litterfall by species, and sorted fine roots. After working in the lab, Eileen worked at the UM Biological Station as a laboratory assistant to Mike Grant.  She also worked as a Research Assistant for Catherine Badgley at the Museum of Paleontology and as a Research Assistant for the Center for Economic Diversification in the Business and Industrial Assistance Division at UM. Eileen completed a Master of Science degree at the UM School of Information and is currently employed as a data analyst at the UM Dental School.

equinter@umich.edu
Mark Westbrock : Research Technician, Sep 2005--May 2006

Mark Westbrock

Research Technician, Sep 2005--May 2006

Mark Westbrock joined the Nadelhoffer lab after completing his Master of Science degree at Wake Forest University. Prior to joining the lab, Mark conducted bird censuses across the globe including at the UM Biological Station and on the Galapagos Islands. His chief responsibilities in the lab were to manage the incubations of UMBS DIRT 2005 soil microcosms and to sort fine roots.  After his time in the lab, Mark enrolled in a solar power installer program at San Juan College in New Mexico.  He is currently the Las Cruces Field Manager at Positive Energy, Inc.

mark.westbrock@gmail.com
Julie Reichert : Field and Lab Research Technician, 2004--2006

Julie Reichert

Field and Lab Research Technician, 2004--2006

Julie Reichert worked with the Kling and Nadelhoffer labs on the Arctic research at Toolik Lake.  After her time in the lab, Julie earned her Master's degree in 2009 at the University of Windsor in the Great Lakes Institute for Environmental Research with Dr. Brian Fryer and Dr. Stuart Ludsin (The Ohio State University). Her work examined yellow perch (Perca flavescens) recruitment and larval development in Maumee River/Lake Erie.   From 2010 to the present July has worked in an Oak Ridge Institute of Science and Education post-graduate program at the U.S. Environmental Protection Agency's Headquarters in Washington, D.C.  She identifies approaches to address climate change and ocean acidification water quality-related impacts through Clean Water Act programs at the Watershed Branch in the Office of Wetlands, Oceans, and Watersheds.  Julie helped develop a mobile website app called How's My Waterway to communicate water quality information to the public.

julie.m.reichert@gmail.com
Pat Micks : DIRT Project Manager, 1995--2006

Pat Micks

DIRT Project Manager, 1995--2006

Pat earned her M.S with Dr. John Aber at the University of New Hampshire, having been inspired to study forest soil-plant nutrient dynamics by my Texas A&M employer and mentor, Dr. Cal Meier. After earning her Masters, she worked for the Harvard Forest on several long-term projects, primarily soil C and N dynamics in the Chronic N Addition and DIRT projects. In 1995 she began working for Knute at the Marine Biological Laboratory's Ecosystems Center in Woods Hole, MA; and was the Harvard Forest DIRT project technician from 1997 until 2004, when Knute brought me to U of M to help install the UMBS DIRT plots with Jim Le Moine. We dug trenches, installed mini-rhizotron tubes, inventoried trees, invented lysimeters (for which we acid-washed marbles), measured gas flux, incubated soils in the lab, collected many bags of litterfall, and analyzed our data while enjoying the seasons at the Biostation.  Pat left the lab in 2006 and worked with Dr. Don Zak as an analytical chemist where she was responsible for segmented flow analyses, elemental analysis-mass spectrometry, gas chromatograph mass spectrometry, and inductively coupled plasma emission mass spectrometry.  She also maintained the treatments for the Michigan Gradient Study.  Pat left the Zak lab in 2012 and currently develops and coordinates programs for two local non-profit organizations: the Ann Arbor Friends Meeting House and the Ark.

Stephanie Schubel : Research Technician, 2005

Stephanie Schubel

Research Technician, 2005

Stephanie joined the Nadelhoffer lab in 2005. As a research assistant for the UMBS DIRT project, she collected, weighed, and filtered Zero Tension Lysimeter samples; collected and sorted fine woody debris; helped with plot maintenance; helped collect yearly soil samples and acid washed glassware.
After working with the lab Stephanie taught high school in New Hampshire, worked with land conservancy Harris Center, nannied, enlisted in the Peace Corp in Mexico, worked as a teaching assistant and Piping Plover recovery steward at the UM Biological Station. Stephanie lives in Marshall, MI with her husband Rev. Adam Schubel.

stephschub@gmail.com
Suzanne Randazzo Pobrislo : Field and Lab Research Technician

Suzanne Randazzo Pobrislo

Field and Lab Research Technician

Suzanne worked with Knute at the Marine Biological Laboratory (Woods Hole, Mass.) prior to moving to Ann Arbor. In the summers, Suzanne worked on the Arctic Research Program at Toolik Lake with Dr.s George Kling and Knute Nadelhoffer. She was the senior research technician on the project and was responsible for the day-to-day operations of the field and laboratory collections and analyses. Suzanne left the lab in 2005 and currently lives in Maine.

Anastacia Ciau : REU Summer 2004

Anastacia Ciau

REU Summer 2004

Anastacia joined the lab from the University of California-Sacramento for a Research Experience for Undergraduates project in summer 2004.  She worked with Dr. Knute Nadelhoffer and Pat Micks to assess the species diversity and biomass of forest floor vegetation on the UM Biological Station DIRT plots.  After finishing her project, Anastacia continued her studies at Humboldt State University. She is also known as Mazel Tough Cocktail of the Sac City Rollers.