Tamara Harms Associate 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 fire and hydrologic regimes on desert streams.
Jacob Adams (B.A., Skidmore College)
M.S. student
Jacob is studying the effects of fire and permafrost on stream metabolism in boreal ecosystems. He has previously studied terrestrial and alpine ecosystems.
Jake Cavaiani (B.S., University of Wisconsin Madison)
M.S. student
Jake brings prior experience working in lake ecosystems to a project focused on application of high-frequency stream chemistry data to assess ecological resilience of the boreal forest.
Karen Jorgenson (B.S., Western Washington University; M.S., University of Wyoming) Lab manager Karen brings a wealth of field work experience, expertise in analytical chemistry, and statistical skill to the lab. She keeps high-quality data pouring off of the instruments, manages complex datasets across many projects, and analyzes data with a particular fondness for mixing models.
FORMER LAB MEMBERS
Technicians
Jessica Czareneki Karen Jorgenson Audrey (Mutschlecner) Krehlik Emily Longano Rachel Willis
Graduate students
Melanie Burnett (M.S. 2021) — Denitrification in boreal soils and sediments Audrey (Mutschlecner) Krehlik (M.S. 2017) — Dissolved organic matter dynamics of high-latitude streams Sarah “Ludda” Ludwig — Biogeochemistry of arctic hillslopes
Rebecca Risser — Nutrient retention on arctic hillslopes
Post-doctoral researchers Rebecca Bellmore (SE AK Watershed Coalition) — Metabolism of desert streams Alex Webster (UNM) — Resilience of boreal catchments to fire and permafrost thaw
Undergraduates Kelsey Blake (U Vic) — Water tracks Faith Ciganek (UAF) — Nitrate in groundwater used for drinking in Fairbanks Arianna Cocallas (Beloit College) — High-frequency biogeochemistry of boreal streams
Adela Contreras (UCD) — Fire effects on boreal catchment biogeochemistry Chris Cook (UNC) — Transient storage in arctic water tracks
Michael Folke (ASU) — Trophic dynamics of desert streams Emma Haines (CSUMB) — Benthic organic matter in desert streams Margaret Haney (NCSU) — Nutrient limitation of boreal 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 Jade Morning Sky Little (UCD) — Desert stream invertebrate community dynamics Taylor Saucier (MSU) — Tissue turnover in desert fish Margaret Zahrah (Tufts) — Denitrification in thermokarst lake sediments