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An Analysis of Respiratory Activity, Q 10 , and Microbial Community Composition of Soils from High and Low Tussock Sites at Toolik, Alaska
Author(s) -
ANDERSON O. ROGER
Publication year - 2010
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/j.1550-7408.2009.00461.x
Subject(s) - tussock , soil water , biology , respiration , microbial population biology , environmental chemistry , ecology , botany , chemistry , bacteria , genetics
. High latitude microbial communities, incurring increased global warming, are a potential major source of respiratory CO 2 contributing to an enhanced greenhouse effect. Data on respiration and microbial density are presented for a moist, high tussock site compared with a low, water saturated site. The density of bacteria and eukaryotic microbes was nearly equivalent at both sites and potentially could yield substantial release of respiratory CO 2 with continued warming. Respiratory rates for soil from the high site were greater than the low. The Q 10 of 2.4 for the high tussock sample was approximately 1.3 × that of the low site sample ( Q 10 of 1.7).