Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory
Many marine ecosystems have undergone ‘regime shifts’, i.e. abrupt reorganizations across trophic levels. Establishing whether these constitute shifts between alternative stable states is of key importance for the prospects of ecosystem recovery and for management. We show how mechanisms underlying...
Published in: | Philosophical Transactions of the Royal Society B: Biological Sciences |
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Online Access: | http://dx.doi.org/10.1098/rstb.2013.0262 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2013.0262 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2013.0262 |
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crroyalsociety:10.1098/rstb.2013.0262 2024-09-30T14:32:11+00:00 Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory Gårdmark, Anna Casini, Michele Huss, Magnus van Leeuwen, Anieke Hjelm, Joakim Persson, Lennart de Roos, André M. 2015 http://dx.doi.org/10.1098/rstb.2013.0262 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2013.0262 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2013.0262 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society B: Biological Sciences volume 370, issue 1659, page 20130262 ISSN 0962-8436 1471-2970 journal-article 2015 crroyalsociety https://doi.org/10.1098/rstb.2013.0262 2024-09-09T06:01:25Z Many marine ecosystems have undergone ‘regime shifts’, i.e. abrupt reorganizations across trophic levels. Establishing whether these constitute shifts between alternative stable states is of key importance for the prospects of ecosystem recovery and for management. We show how mechanisms underlying alternative stable states caused by predator–prey interactions can be revealed in field data, using analyses guided by theory on size-structured community dynamics. This is done by combining data on individual performance (such as growth and fecundity) with information on population size and prey availability. We use Atlantic cod ( Gadus morhua ) and their prey in the Baltic Sea as an example to discuss and distinguish two types of mechanisms, ‘cultivation-depensation’ and ‘overcompensation’, that can cause alternative stable states preventing the recovery of overexploited piscivorous fish populations. Importantly, the type of mechanism can be inferred already from changes in the predators' body growth in different life stages. Our approach can thus be readily applied to monitored stocks of piscivorous fish species, for which this information often can be assembled. Using this tool can help resolve the causes of catastrophic collapses in marine predatory–prey systems and guide fisheries managers on how to successfully restore collapsed piscivorous fish stocks. Article in Journal/Newspaper atlantic cod Gadus morhua The Royal Society Philosophical Transactions of the Royal Society B: Biological Sciences 370 1659 20130262 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Many marine ecosystems have undergone ‘regime shifts’, i.e. abrupt reorganizations across trophic levels. Establishing whether these constitute shifts between alternative stable states is of key importance for the prospects of ecosystem recovery and for management. We show how mechanisms underlying alternative stable states caused by predator–prey interactions can be revealed in field data, using analyses guided by theory on size-structured community dynamics. This is done by combining data on individual performance (such as growth and fecundity) with information on population size and prey availability. We use Atlantic cod ( Gadus morhua ) and their prey in the Baltic Sea as an example to discuss and distinguish two types of mechanisms, ‘cultivation-depensation’ and ‘overcompensation’, that can cause alternative stable states preventing the recovery of overexploited piscivorous fish populations. Importantly, the type of mechanism can be inferred already from changes in the predators' body growth in different life stages. Our approach can thus be readily applied to monitored stocks of piscivorous fish species, for which this information often can be assembled. Using this tool can help resolve the causes of catastrophic collapses in marine predatory–prey systems and guide fisheries managers on how to successfully restore collapsed piscivorous fish stocks. |
format |
Article in Journal/Newspaper |
author |
Gårdmark, Anna Casini, Michele Huss, Magnus van Leeuwen, Anieke Hjelm, Joakim Persson, Lennart de Roos, André M. |
spellingShingle |
Gårdmark, Anna Casini, Michele Huss, Magnus van Leeuwen, Anieke Hjelm, Joakim Persson, Lennart de Roos, André M. Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
author_facet |
Gårdmark, Anna Casini, Michele Huss, Magnus van Leeuwen, Anieke Hjelm, Joakim Persson, Lennart de Roos, André M. |
author_sort |
Gårdmark, Anna |
title |
Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
title_short |
Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
title_full |
Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
title_fullStr |
Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
title_full_unstemmed |
Regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
title_sort |
regime shifts in exploited marine food webs: detecting mechanisms underlying alternative stable states using size-structured community dynamics theory |
publisher |
The Royal Society |
publishDate |
2015 |
url |
http://dx.doi.org/10.1098/rstb.2013.0262 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2013.0262 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2013.0262 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Philosophical Transactions of the Royal Society B: Biological Sciences volume 370, issue 1659, page 20130262 ISSN 0962-8436 1471-2970 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.2013.0262 |
container_title |
Philosophical Transactions of the Royal Society B: Biological Sciences |
container_volume |
370 |
container_issue |
1659 |
container_start_page |
20130262 |
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1811636413878239232 |