Neutrality and the response of rare species to environmental variance.

Neutral models and differential responses of species to environmental heterogeneity offer complementary explanations of species abundance distribution and dynamics. Under what circumstances one model prevails over the other is still a matter of debate. We show that the decay of similarity over time...

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Autores principales:	Lisandro Benedetti-Cecchi, Iacopo Bertocci, Stefano Vaselli, Elena Maggi, Fabio Bulleri
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2008
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ba8df654b6934543a0aa464d2e681d3d
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spelling	oai:doaj.org-article:ba8df654b6934543a0aa464d2e681d3d2021-11-25T06:11:30ZNeutrality and the response of rare species to environmental variance.1932-620310.1371/journal.pone.0002777https://doaj.org/article/ba8df654b6934543a0aa464d2e681d3d2008-07-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18648545/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Neutral models and differential responses of species to environmental heterogeneity offer complementary explanations of species abundance distribution and dynamics. Under what circumstances one model prevails over the other is still a matter of debate. We show that the decay of similarity over time in rocky seashore assemblages of algae and invertebrates sampled over a period of 16 years was consistent with the predictions of a stochastic model of ecological drift at time scales larger than 2 years, but not at time scales between 3 and 24 months when similarity was quantified with an index that reflected changes in abundance of rare species. A field experiment was performed to examine whether assemblages responded neutrally or non-neutrally to changes in temporal variance of disturbance. The experimental results did not reject neutrality, but identified a positive effect of intermediate levels of environmental heterogeneity on the abundance of rare species. This effect translated into a marked decrease in the characteristic time scale of species turnover, highlighting the role of rare species in driving assemblage dynamics in fluctuating environments.Lisandro Benedetti-CecchiIacopo BertocciStefano VaselliElena MaggiFabio BulleriPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 3, Iss 7, p e2777 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lisandro Benedetti-Cecchi Iacopo Bertocci Stefano Vaselli Elena Maggi Fabio Bulleri Neutrality and the response of rare species to environmental variance.
description	Neutral models and differential responses of species to environmental heterogeneity offer complementary explanations of species abundance distribution and dynamics. Under what circumstances one model prevails over the other is still a matter of debate. We show that the decay of similarity over time in rocky seashore assemblages of algae and invertebrates sampled over a period of 16 years was consistent with the predictions of a stochastic model of ecological drift at time scales larger than 2 years, but not at time scales between 3 and 24 months when similarity was quantified with an index that reflected changes in abundance of rare species. A field experiment was performed to examine whether assemblages responded neutrally or non-neutrally to changes in temporal variance of disturbance. The experimental results did not reject neutrality, but identified a positive effect of intermediate levels of environmental heterogeneity on the abundance of rare species. This effect translated into a marked decrease in the characteristic time scale of species turnover, highlighting the role of rare species in driving assemblage dynamics in fluctuating environments.
format	article
author	Lisandro Benedetti-Cecchi Iacopo Bertocci Stefano Vaselli Elena Maggi Fabio Bulleri
author_facet	Lisandro Benedetti-Cecchi Iacopo Bertocci Stefano Vaselli Elena Maggi Fabio Bulleri
author_sort	Lisandro Benedetti-Cecchi
title	Neutrality and the response of rare species to environmental variance.
title_short	Neutrality and the response of rare species to environmental variance.
title_full	Neutrality and the response of rare species to environmental variance.
title_fullStr	Neutrality and the response of rare species to environmental variance.
title_full_unstemmed	Neutrality and the response of rare species to environmental variance.
title_sort	neutrality and the response of rare species to environmental variance.
publisher	Public Library of Science (PLoS)
publishDate	2008
url	https://doaj.org/article/ba8df654b6934543a0aa464d2e681d3d
work_keys_str_mv	AT lisandrobenedetticecchi neutralityandtheresponseofrarespeciestoenvironmentalvariance AT iacopobertocci neutralityandtheresponseofrarespeciestoenvironmentalvariance AT stefanovaselli neutralityandtheresponseofrarespeciestoenvironmentalvariance AT elenamaggi neutralityandtheresponseofrarespeciestoenvironmentalvariance AT fabiobulleri neutralityandtheresponseofrarespeciestoenvironmentalvariance
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Neutrality and the response of rare species to environmental variance.

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