Decline in a dominant invertebrate species contributes to altered carbon cycling in a low-diversity soil ecosystem""...To determine the implications of this climate-induced decline in nematode abundance on soil C cycling we followed the fate of a C-13 tracer added to soils in Taylor Valley, Antarctica. Carbon assimilation by the dry valley nematode community contributed significantly to soil C cycling (2-7% of the heterotrophic C flux). Thus, the influence of a climate-induced decline in abundance of a dominant species may have a significant effect on ecosystem functioning in a low-diversity ecosystem."
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