Concerns over environmental disturbance in the McMurdo Dry Valleys are increasing with increasing foot traffic from tourists and scientist. The effect of pedestrian disturbance was monitored by comparing the species composition, depth distribution and soil properties between adjacent high-, low- and no- traffic sites. This study began in the austral summer 1995/1996.
A short-term soil manipulation experiment has been conducted as part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The chlorophyll-a concentration of soil samples was determined. Samples were taken on November 13, 1995, November 17, 1995, November 24, 1995 and December 11, 1995.
1995-11-13 to 1995-12-11