HR: 0800h
AN: C21C-1117 [Abstracts]
TI: Spatial and temporal fluctuations in water levels of tundra ponds: baseline studies associated with a
large-scale flooding and draining experiment in northern Alaska
AU: Jaurrieta, E
EM: lady.edith@gmail.com
AF: Department of Biology and the Environmental Science Program, University of Texas at El Paso, Department
of Biology
500 West University Ave.
University of Texas at El Paso, El Paso, TX 79968
United States
AU: Laija, E
EM: nexit13@hotmail.com
AF: Department of Biology and the Environmental Science Program, University of Texas at El Paso, Department
of Biology
500 West University Ave.
University of Texas at El Paso, El Paso, TX 79968
United States
AU: * Tweedie, C E
EM: ctweedie@utep.edu
AF: Department of Biology and the Environmental Science Program, University of Texas at El Paso, Department
of Biology
500 West University Ave.
University of Texas at El Paso, El Paso, TX 79968
United States
AB:
To better understand how soil moisture affects carbon balance and other biophysical processes in tundra ecosystems, a
large-scale (ca. 60ha) flooding and draining experiment was initiated in Spring 2005 on the Barrow Environmental Observatory
in northern Alaska. During 2005 the experimental area was studied in an un-manipulated state. In Spring 2006, the study area
will be divided into three soil moisture conditions: a drained area (-10cm) at the north end (ca. 20ha), a central
un-manipulated control area (ca. 20ha), and a flooded area (+10cm) at the south end of the basin (ca. 20ha). In preparation
for initiating the manipulation planned for 2006, the water level of various tundra ponds, both within and outside of the
experimental area, was measured every few days throughout the summer of 2005 using a Differential Global Positioning System
(DGPS). This study will report an initial analysis of these data, which will be used to engineer, monitor and regulate water
levels within the experimental manipulation.
DE: 0414 Biogeochemical cycles, processes, and modeling (0412, 0793, 1615, 4805, 4912)
DE: 0428 Carbon cycling (4806)
DE: 0475 Permafrost, cryosphere, and high-latitude processes (0702, 0716)
DE: 0718 Tundra (9315)
DE: 9345 Large bodies of water (e.g., lakes and inland seas) (0746)
SC: Cryosphere [C]
MN: Fall Meeting 2005