Examining the effects of species richness on community stability: an assembly model approach
We build dynamic models of community assembly by starting with one species in our model ecosystem and adding colonists. We find that the number of species present first increases, then fluctuates about some level. We ask: how large are these fluctuations and how can we characterize them statisticall...
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2002
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ftiiscindia:oai:eprints.iisc.ernet.in:39182 2023-05-15T15:04:17+02:00 Examining the effects of species richness on community stability: an assembly model approach Wilmers, Christopher C Sinha, Sitabhra Brede, Markus 2002-11 application/pdf http://eprints.iisc.ernet.in/39182/ http://eprints.iisc.ernet.in/39182/1/Examining_the_effects.pdf http://onlinelibrary.wiley.com/doi/10.1034/j.1600-0706.2002.990218.x/abstract unknown John Wiley and Sons http://eprints.iisc.ernet.in/39182/1/Examining_the_effects.pdf Wilmers, Christopher C and Sinha, Sitabhra and Brede, Markus (2002) Examining the effects of species richness on community stability: an assembly model approach. In: Oikos, 99 (2). pp. 363-367. Physics Journal Article PeerReviewed 2002 ftiiscindia 2014-09-27T18:10:57Z We build dynamic models of community assembly by starting with one species in our model ecosystem and adding colonists. We find that the number of species present first increases, then fluctuates about some level. We ask: how large are these fluctuations and how can we characterize them statistically? As in Robert May's work, communities with weaker interspecific interactions permit a greater number of species to coexist on average. We find that as this average increases, however, the relative variation in the number of species and return times to mean community levels decreases. In addition, the relative frequency of large extinction events to small extinction events decreases as mean community size increases. While the model reproduces several of May's results, it also provides theoretical support for Charles Elton's idea that diverse communities such as those found in the tropics should be less variable than depauperate communities such as those found in arctic or agricultural settings. Article in Journal/Newspaper Arctic Indian Institute of Science, Bangalore: ePrints@IIsc Arctic |
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Indian Institute of Science, Bangalore: ePrints@IIsc |
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Physics |
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Physics Wilmers, Christopher C Sinha, Sitabhra Brede, Markus Examining the effects of species richness on community stability: an assembly model approach |
topic_facet |
Physics |
description |
We build dynamic models of community assembly by starting with one species in our model ecosystem and adding colonists. We find that the number of species present first increases, then fluctuates about some level. We ask: how large are these fluctuations and how can we characterize them statistically? As in Robert May's work, communities with weaker interspecific interactions permit a greater number of species to coexist on average. We find that as this average increases, however, the relative variation in the number of species and return times to mean community levels decreases. In addition, the relative frequency of large extinction events to small extinction events decreases as mean community size increases. While the model reproduces several of May's results, it also provides theoretical support for Charles Elton's idea that diverse communities such as those found in the tropics should be less variable than depauperate communities such as those found in arctic or agricultural settings. |
format |
Article in Journal/Newspaper |
author |
Wilmers, Christopher C Sinha, Sitabhra Brede, Markus |
author_facet |
Wilmers, Christopher C Sinha, Sitabhra Brede, Markus |
author_sort |
Wilmers, Christopher C |
title |
Examining the effects of species richness on community stability: an assembly model approach |
title_short |
Examining the effects of species richness on community stability: an assembly model approach |
title_full |
Examining the effects of species richness on community stability: an assembly model approach |
title_fullStr |
Examining the effects of species richness on community stability: an assembly model approach |
title_full_unstemmed |
Examining the effects of species richness on community stability: an assembly model approach |
title_sort |
examining the effects of species richness on community stability: an assembly model approach |
publisher |
John Wiley and Sons |
publishDate |
2002 |
url |
http://eprints.iisc.ernet.in/39182/ http://eprints.iisc.ernet.in/39182/1/Examining_the_effects.pdf http://onlinelibrary.wiley.com/doi/10.1034/j.1600-0706.2002.990218.x/abstract |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
http://eprints.iisc.ernet.in/39182/1/Examining_the_effects.pdf Wilmers, Christopher C and Sinha, Sitabhra and Brede, Markus (2002) Examining the effects of species richness on community stability: an assembly model approach. In: Oikos, 99 (2). pp. 363-367. |
_version_ |
1766336085588180992 |