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Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopes

Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopes. Tamara Harms (UAF), Sarah Godsey (ISU), Mike Gooseff (PSU), Jay Jones (UAF) Students: Margit Jaeger (UAF ugrad), Becca Risser (UAF M.S.), Caitlin Rushlow (ISU Ph.D.) Teacher: Melissa Barker

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Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopes

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  1. Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopes Tamara Harms (UAF), Sarah Godsey (ISU), Mike Gooseff (PSU), Jay Jones (UAF) Students: Margit Jaeger (UAF ugrad), Becca Risser (UAF M.S.), Caitlin Rushlow (ISU Ph.D.) Teacher: Melissa Barker Funding: Office of Polar Programs, National Science Foundation

  2. Changing hydrology and elemental cycles

  3. 1200 1000 800 600 400 200 0 1990 1992 1994 1996 1998 2000 2002 McClelland et al. 2007 Changing hydrology and elemental cycles Annual nitrate export (kg N)

  4. Water tracks 30% of the Upper Kuparuk basin (McNamara et al. 1997)

  5. Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopess • How do storage and transport of water influence temporal patterns in fluxes of water and solutes from water tracks? • How does delivery of water and solutes by hydrologic flowpaths influence uptake and transport of N and P within water tracks?

  6. Water tracks • Continuously measure discharge (flumes fitted with pressure transducers) • Monitor thaw and snow dynamics (thermocouples, manual surveys) • Daily water chemistry (automated samplers) • Storm chemistry (precipitation gauge triggered) • Nutrient uptake experiments (surface and subsurface)

  7. Support to date CPS: snowmachines, boardwalks Fairbanks expeditor Shop access, building expertise

  8. Support to date Lab space: water, “wet” side/”dry” side Office space (up to 5 people) Key to have clear space assignments in advance, including sample storage

  9. Gear and personnel transport • truck available for use in Fairbanks • email notification when items arrive in Toolik or Fairbanks • additional trucks FAI-Toolik and Toolik-SCC

  10. Science support • refrigerator/freezer/space designated for natural abundance isotope work • early (May) and late season (Sept) helo support • support or streamlined permitting process

  11. Spatial data • airborne LiDAR • low elevation, high resolution imagery (J. Cherry) • Clearinghouse for spatial data: • catalog available data • query needs • advocate for Toolik users

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