Ledger, M.E., Brown, LE, Edwards, F et al. (2 more authors) (2013) Drought alters the structure and functioning of complex food webs. Nature Climate Change, 3 (3). 223 - 227. ISSN 1758-678X
Abstract
Climate change is expected to make many regions of the world much drier over coming decades1,2. More intense drought would transform rivers3 with potentially severe but largely unknown consequences at higher (multispecies) levels of organization4. Here we show experimentally how the intensification of drought may alter the underlying structure and functioning (biomass flux dynamics) of freshwater food webs - networks of species and their interactions5. Drought triggered substantial losses of species and links, especially among predators, leading to the partial collapse of the food webs. Total resource-consumer biomass flux was also strongly suppressed by disturbance, yet several network-level properties (such as connectance and interaction diversity) were conserved, driven by consumer resource fidelity and a substantial reconfiguration of fluxes within the webs as production shifted down the size spectrum from large to small species. Our research demonstrates that drier climates could have far-reaching impacts on the functioning of freshwater ecosystems.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2013, Nature Publishing Group. This is an author produced version of a paper published in Nature Climate Change. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | climate change; consumer-resource interaction; drought stress; ecosystem function; ecosystem structure; food web; freshwater ecosystem |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 31 Jul 2013 11:42 |
Last Modified: | 23 Jun 2023 21:34 |
Published Version: | http://dx.doi.org/10.1038/nclimate1684 |
Status: | Published |
Publisher: | Nature Publishing Group |
Identification Number: | 10.1038/nclimate1684 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:76085 |