Dataset Information

Reduced feeding activity of soil detritivores under warmer and drier conditions.

ABSTRACT: Anthropogenic warming is projected to trigger positive feedbacks to climate by enhancing carbon losses from the soil1. While such losses are, in part, owing to increased decomposition of organic matter by invertebrate detritivores, it is unknown how detritivore feeding activity will change with warming2, especially under drought conditions. Here, using four year manipulation experiments in two North American boreal forests, we investigate how temperature (ambient, +1.7 °C, +3.4 °C) and rainfall (ambient, -40% summer precipitation) perturbations influence detritivore feeding activity. In contrast to general expectations1,3, warming had negligible net effects on detritivore feeding activity at ambient precipitation. However, when combined with precipitation reductions, warming decreased feeding activity by ~14%. As across all plots and dates, detritivore feeding activity was positively associated to bulk soil microbial respiration, our results suggest slower rates of decomposition of soil organic matter, and thus reduced positive feedbacks to climate under anthropogenic climate change.

SUBMITTER: Thakur MP

PROVIDER: S-EPMC5777625 | biostudies-other | 2018 Jan

REPOSITORIES: biostudies-other

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Reduced feeding activity of soil detritivores under warmer and drier conditions.

Thakur Madhav P MP Reich Peter B PB Hobbie Sarah E SE Stefanski Artur A Rich Roy R Rice Karen E KE Eddy William C WC Eisenhauer Nico N

Nature climate change 20171218 1

Anthropogenic warming is projected to trigger positive feedbacks to climate by enhancing carbon losses from the soil1. While such losses are, in part, owing to increased decomposition of organic matter by invertebrate detritivores, it is unknown how detritivore feeding activity will change with warming2, especially under drought conditions. Here, using four year manipulation experiments in two North American boreal forests, we investigate how temperature (ambient, +1.7 °C, +3.4 °C) and rainfall ...[more]

PMID: 29375673

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Dataset Information

Reduced feeding activity of soil detritivores under warmer and drier conditions.

Publications

Reduced feeding activity of soil detritivores under warmer and drier conditions.

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