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Journal article 1085 views

Extinctions in simple and complex communities

Mike Fowler Orcid Logo, Jan Lindstrom

Oikos, Volume: 99, Issue: 3, Pages: 511 - 517

Swansea University Author: Mike Fowler Orcid Logo

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DOI (Published version): 10.1034/j.1600-0706.2002.11757.x

Abstract

Disagreement exists between the results of theoretical and empirical exploration into the effect of increasing community complexity on the stability of multispecies ecosystems. A recent return to interest in this area suggests previous results should be re-assessed, from both experimental studies an...

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Published in: Oikos
Published: 2002
URI: https://cronfa.swan.ac.uk/Record/cronfa19663
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first_indexed 2015-06-19T02:01:48Z
last_indexed 2018-02-09T04:55:28Z
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spelling 2015-06-18T10:17:04.8888269 v2 19663 2014-12-01 Extinctions in simple and complex communities a3a29027498d4b43a3f082a0a5ba16b4 0000-0003-1544-0407 Mike Fowler Mike Fowler true false 2014-12-01 SBI Disagreement exists between the results of theoretical and empirical exploration into the effect of increasing community complexity on the stability of multispecies ecosystems. A recent return to interest in this area suggests previous results should be re-assessed, from both experimental studies and models, to understand where this discrepancy arises from. Here we propose various simple extensions to a standard multispecies community model that each increase the complexity of the system in a different way. We find that increasing the number of species in a community leads to a decrease in community persistence after the system is perturbed, and go on to show that increasing the dynamical diversity of the community members leads to an increase in stability through a reduction in extinction events, relative to the less complex form of the model. Our results suggest that different forms of complexity lead to different outcomes in the stability properties of the community. While aspects of this work agree with previous empirical findings that more complex communities are more robust to perturbation, we stress that the type of complexity included and the measure of stability used in community models must be properly defined, to allow objective comparisons to be made with previous and future work. Journal Article Oikos 99 3 511 517 31 12 2002 2002-12-31 10.1034/j.1600-0706.2002.11757.x COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2015-06-18T10:17:04.8888269 2014-12-01T10:33:03.7433312 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Mike Fowler 0000-0003-1544-0407 1 Jan Lindstrom 2
title Extinctions in simple and complex communities
spellingShingle Extinctions in simple and complex communities
Mike Fowler
title_short Extinctions in simple and complex communities
title_full Extinctions in simple and complex communities
title_fullStr Extinctions in simple and complex communities
title_full_unstemmed Extinctions in simple and complex communities
title_sort Extinctions in simple and complex communities
author_id_str_mv a3a29027498d4b43a3f082a0a5ba16b4
author_id_fullname_str_mv a3a29027498d4b43a3f082a0a5ba16b4_***_Mike Fowler
author Mike Fowler
author2 Mike Fowler
Jan Lindstrom
format Journal article
container_title Oikos
container_volume 99
container_issue 3
container_start_page 511
publishDate 2002
institution Swansea University
doi_str_mv 10.1034/j.1600-0706.2002.11757.x
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description Disagreement exists between the results of theoretical and empirical exploration into the effect of increasing community complexity on the stability of multispecies ecosystems. A recent return to interest in this area suggests previous results should be re-assessed, from both experimental studies and models, to understand where this discrepancy arises from. Here we propose various simple extensions to a standard multispecies community model that each increase the complexity of the system in a different way. We find that increasing the number of species in a community leads to a decrease in community persistence after the system is perturbed, and go on to show that increasing the dynamical diversity of the community members leads to an increase in stability through a reduction in extinction events, relative to the less complex form of the model. Our results suggest that different forms of complexity lead to different outcomes in the stability properties of the community. While aspects of this work agree with previous empirical findings that more complex communities are more robust to perturbation, we stress that the type of complexity included and the measure of stability used in community models must be properly defined, to allow objective comparisons to be made with previous and future work.
published_date 2002-12-31T03:23:09Z
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score 11.013619

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