2002-2003 Science Planning Summary

Biology & Medicine

Dr. Polly Penhale
Program Manager

BM-042-L

NSF/OPP 98-10219
Station: McMurdo Station
Research Site(s): Wright Valley, Lake Hoare, Taylor Valley, CSEC

McMurdo Dry Valleys LTER: The role of natural legacy on ecosystem structure and function in a polar desert.
Dr. W. Berry Lyons
Ohio State University
Byrd Polar Research Center
lyons.142@osu.edu

Deploying Team Members: Timothy O Fitzgibbon . Jill Gudding . William B Lyons . Daryl L Moorhead . Kathleen A Welch
Research Objectives: Chemistry of streams, lakes, and glaciers component of McMurdo LTER. The group is responsible for monitoring the inorganic geochemistry of waters collected from glaciers, streams and lakes of the dry valleys. This year the group will address questions about the concentrations and fluxes of phosphorus in various components of the ecosystem. They will coordinate with another project of the principal investigator (GO-074-O) to examine the nature of chemical weathering in the Dry Valleys.

Field Season Overview:
This field season, researchers plan to monitor the inorganic chemistry of water collected from glaciers, streams, and lakes of the Dry Valleys, in collaboration with other LTER groups involved in lake and stream sampling. This group will specifically address questions about the concentrations and fluxes of phosphorus in various components of the ecosystem.

Team members will travel by helicopter and on foot to sites in the Dry Valleys to collect water, rock, sediment, snow and ice samples. The chemical analysis of lake, stream and glacier samples will be done at Crary Lab.