Tamara Harms                                                            Assistant Professor                                    Department of Biology & Wildlife                       Institute of Arctic Biology

Tamara is an ecosystem ecologist and biogeochemist interested in the effects of spatial heterogeneity and hydrologic flowpaths on elemental cycles. She has studied desert riparian zones and streams, urban ecosystems, and boreal and arctic catchments. Current foci include: biogeochemical indicators of ecosystem resilience; responses of carbon, nitrogen, and phosphorus cycles to permafrost thaw; and influences of the hydrologic regime on desert streams.                                                 


Melanie Burnett (B.S., Colorado State)
M.S. student
Melanie is studying denitrification and N2O emission in soils and sediments of the boreal forest. She is working on the Bonanza Creek LTER’s Regional Site Network of stands varying in fire history.

Karen Jorgenson (B.S., Western Washington University)
Karen contributes her expertise to keeping data flowing from both the lab and field.

Rachel Voight (B.S., Oakland University)
Lab manager
Rachel manages lab and field logistics, tames analytical instruments, and has an inordinate fondness for data loggers. She is also an M.S. student in Jay Jones’ lab, studying CO2 emission from boreal streams.

Alex Webster (Ph.D., University of California Davis)
Post-doctoral research associate
Alex is applying expertise in landscape ecology to study how high-frequency stream chemistry might provide indicators of ecological resilience and impending state changes in the boreal forest.




Audrey Mutschlecner                                             M.S., 2017

Audrey studied dissolved organic matter, finding that phosphorus accelerates retention of DOM in boreal and arctic streams. She earned a B.A. in environmental studies at Wellesley College. Audrey worked as a summer technician on our SCALER project prior to beginning graduate school. She managed the lab after completing her master’s, contributing to field work in Arizona, overseeing instream sensors, and organizing local sampling campaigns in Goldstream Valley.

Emily Longano

Graduate students
Sarah “Ludda” Ludwig
— Biogeochemistry of arctic hillslopes
Rebecca Risser — Nutrient retention on arctic hillslopes

Kelsey Blake
(U Vic) — Water tracks
Arianna Cocallas (Beloit College) — High-frequency biogeochemistry of boreal streams
Chris Cook (UNC) — Transient storage in arctic water tracks
Michael Folke (ASU) — Trophic dynamics of desert streams
Margit Jaeger (UAF) — Water tracks
Dani Kirsch (SE Missouri St) — Food chain efficiency in desert streams
Stephanie Li (UCSD) — Nutrient limitation in desert streams
Margaret Zahrah (Tufts) — Denitrification in thermokarst lake sediments