The role of body size in complex food webs: a cold case
Human-induced habitat destruction, overexploitation, introduction of alien species and climate change are causing species to go extinct at unprecedented rates, from local to global scales. There are growing concerns that these kinds of disturbances alter important functions of ecosystems. Our curren...
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ftufz:oai:ufz.de:11953 2023-12-10T09:41:54+01:00 The role of body size in complex food webs: a cold case Jacob, U. Thierry, A. Brose, U. Arntz, W.E. Berg, S. Brey, T. Fetzer, Ingo Jonsson, T. Mintenbeck, K. Möllmann, C. Petchey, O.L. Riede, J.O. Dunne, J.A. Belgrano, A. Reiss, J. 2011 application/pdf https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11953 https://doi.org/10.1016/B978-0-12-386475-8.00005-8 en eng Academic Press / Elsevier, London Belgrano, A., Reiss, J.;; The role of body size in multispecies systems;; 181 - 223 https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11953 https://dx.doi.org/10.1016/B978-0-12-386475-8.00005-8 info:eu-repo/semantics/closedAccess ISSN: 0065-2504 ISBN: 9780123864758 Network structure Ecosystem Food web Weddell Sea info:eu-repo/semantics/bookPart https://purl.org/dc/dcmitype/Text 2011 ftufz https://doi.org/10.1016/B978-0-12-386475-8.00005-8 2023-11-12T23:31:41Z Human-induced habitat destruction, overexploitation, introduction of alien species and climate change are causing species to go extinct at unprecedented rates, from local to global scales. There are growing concerns that these kinds of disturbances alter important functions of ecosystems. Our current understanding is that key parameters of a community (e.g. its functional diversity, species composition, and presence/absence of vulnerable species) reflect an ecological network's ability to resist or rebound from change in response to pressures and disturbances, such as species loss. If the food web structure is relatively simple, we can analyse the roles of different species interactions in determining how environmental impacts translate into species loss. However, when ecosystems harbour species-rich communities, as is the case in most natural systems, then the complex network of ecological interactions makes it a far more challenging task to perceive how species’ functional roles influence the consequences of species loss. One approach to deal with such complexity is to focus on the functional traits of species in order to identify their respective roles: for instance, large species seem to be more susceptible to extinction than smaller species. Here, we introduce and analyse the marine food web from the high Antarctic Weddell Sea Shelf to illustrate the role of species traits in relation to network robustness of this complex food web. Our approach was threefold: firstly, we applied a new classification system to all species, grouping them by traits other than body size; secondly, we tested the relationship between body size and food web parameters within and across these groups and finally, we calculated food web robustness. We addressed questions regarding (i) patterns of species functional/trophic roles, (ii) relationships between species functional roles and body size and (iii) the role of species body size in terms of network robustness. Our results show that when analyzing relationships between trophic ... Book Part Antarc* Antarctic Weddell Sea UFZ - Publication Index (Helmholtz-Centre for Environmental Research) Antarctic Weddell Sea Weddell 181 223 |
institution |
Open Polar |
collection |
UFZ - Publication Index (Helmholtz-Centre for Environmental Research) |
op_collection_id |
ftufz |
language |
English |
topic |
Network structure Ecosystem Food web Weddell Sea |
spellingShingle |
Network structure Ecosystem Food web Weddell Sea Jacob, U. Thierry, A. Brose, U. Arntz, W.E. Berg, S. Brey, T. Fetzer, Ingo Jonsson, T. Mintenbeck, K. Möllmann, C. Petchey, O.L. Riede, J.O. Dunne, J.A. The role of body size in complex food webs: a cold case |
topic_facet |
Network structure Ecosystem Food web Weddell Sea |
description |
Human-induced habitat destruction, overexploitation, introduction of alien species and climate change are causing species to go extinct at unprecedented rates, from local to global scales. There are growing concerns that these kinds of disturbances alter important functions of ecosystems. Our current understanding is that key parameters of a community (e.g. its functional diversity, species composition, and presence/absence of vulnerable species) reflect an ecological network's ability to resist or rebound from change in response to pressures and disturbances, such as species loss. If the food web structure is relatively simple, we can analyse the roles of different species interactions in determining how environmental impacts translate into species loss. However, when ecosystems harbour species-rich communities, as is the case in most natural systems, then the complex network of ecological interactions makes it a far more challenging task to perceive how species’ functional roles influence the consequences of species loss. One approach to deal with such complexity is to focus on the functional traits of species in order to identify their respective roles: for instance, large species seem to be more susceptible to extinction than smaller species. Here, we introduce and analyse the marine food web from the high Antarctic Weddell Sea Shelf to illustrate the role of species traits in relation to network robustness of this complex food web. Our approach was threefold: firstly, we applied a new classification system to all species, grouping them by traits other than body size; secondly, we tested the relationship between body size and food web parameters within and across these groups and finally, we calculated food web robustness. We addressed questions regarding (i) patterns of species functional/trophic roles, (ii) relationships between species functional roles and body size and (iii) the role of species body size in terms of network robustness. Our results show that when analyzing relationships between trophic ... |
author2 |
Belgrano, A. Reiss, J. |
format |
Book Part |
author |
Jacob, U. Thierry, A. Brose, U. Arntz, W.E. Berg, S. Brey, T. Fetzer, Ingo Jonsson, T. Mintenbeck, K. Möllmann, C. Petchey, O.L. Riede, J.O. Dunne, J.A. |
author_facet |
Jacob, U. Thierry, A. Brose, U. Arntz, W.E. Berg, S. Brey, T. Fetzer, Ingo Jonsson, T. Mintenbeck, K. Möllmann, C. Petchey, O.L. Riede, J.O. Dunne, J.A. |
author_sort |
Jacob, U. |
title |
The role of body size in complex food webs: a cold case |
title_short |
The role of body size in complex food webs: a cold case |
title_full |
The role of body size in complex food webs: a cold case |
title_fullStr |
The role of body size in complex food webs: a cold case |
title_full_unstemmed |
The role of body size in complex food webs: a cold case |
title_sort |
role of body size in complex food webs: a cold case |
publisher |
Academic Press / Elsevier, London |
publishDate |
2011 |
url |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11953 https://doi.org/10.1016/B978-0-12-386475-8.00005-8 |
geographic |
Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Weddell Sea |
genre_facet |
Antarc* Antarctic Weddell Sea |
op_source |
ISSN: 0065-2504 ISBN: 9780123864758 |
op_relation |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11953 https://dx.doi.org/10.1016/B978-0-12-386475-8.00005-8 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/B978-0-12-386475-8.00005-8 |
container_start_page |
181 |
op_container_end_page |
223 |
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1784884605773414400 |