Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies

Abstract Sandy beach fauna is hypothesized to be mainly structured by environmental variables. As such, it is expected that morphodynamic characteristics are limiting factors, and the species pool inhabiting harsher reflective beaches would be a subset of (i.e., nested in) the fauna of nearby dissip...

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Autores principales:	Helio H. Checon, Guilherme N. Corte, Yasmina M. L. Shah Esmaeili, A. Cecilia Z. Amaral
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/21ff1db4ce884ed19b09d1a6e3a340f9
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spelling	oai:doaj.org-article:21ff1db4ce884ed19b09d1a6e3a340f92021-12-02T15:09:04ZNestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies10.1038/s41598-018-22158-32045-2322https://doaj.org/article/21ff1db4ce884ed19b09d1a6e3a340f92018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-22158-3https://doaj.org/toc/2045-2322Abstract Sandy beach fauna is hypothesized to be mainly structured by environmental variables. As such, it is expected that morphodynamic characteristics are limiting factors, and the species pool inhabiting harsher reflective beaches would be a subset of (i.e., nested in) the fauna of nearby dissipative beaches. We investigated the existence of a nestedness pattern in sandy beach assemblages, as well as the contribution of environmental and spatial variables (i.e., factors that potentially affect an assemblage regardless of environmental conditions - typically related to distance between sites and dispersal of organisms) on sandy beach macrobenthic fauna. Dissipative beaches had higher species richness than reflective beaches but we found no nestedness pattern. Furthermore, almost every beach showed exclusive species. Spatial variables exerted stronger influence on macrobenthic assemblages than local environmental variables. Our results therefore suggest that local and small-scale recruitment is the predominant process structuring macrobenthic assemblages. These results bring important implications for sandy beach conservation: given that spatial distance is an important factor structuring macrobenthic fauna and different sandy beaches harbor different pools of species, conservation programs need to focus on sandy beaches across large spatial scales and with varied morphodynamic characteristics in order to preserve coastal biodiversity.Helio H. CheconGuilherme N. CorteYasmina M. L. Shah EsmaeiliA. Cecilia Z. AmaralNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Helio H. Checon Guilherme N. Corte Yasmina M. L. Shah Esmaeili A. Cecilia Z. Amaral Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
description	Abstract Sandy beach fauna is hypothesized to be mainly structured by environmental variables. As such, it is expected that morphodynamic characteristics are limiting factors, and the species pool inhabiting harsher reflective beaches would be a subset of (i.e., nested in) the fauna of nearby dissipative beaches. We investigated the existence of a nestedness pattern in sandy beach assemblages, as well as the contribution of environmental and spatial variables (i.e., factors that potentially affect an assemblage regardless of environmental conditions - typically related to distance between sites and dispersal of organisms) on sandy beach macrobenthic fauna. Dissipative beaches had higher species richness than reflective beaches but we found no nestedness pattern. Furthermore, almost every beach showed exclusive species. Spatial variables exerted stronger influence on macrobenthic assemblages than local environmental variables. Our results therefore suggest that local and small-scale recruitment is the predominant process structuring macrobenthic assemblages. These results bring important implications for sandy beach conservation: given that spatial distance is an important factor structuring macrobenthic fauna and different sandy beaches harbor different pools of species, conservation programs need to focus on sandy beaches across large spatial scales and with varied morphodynamic characteristics in order to preserve coastal biodiversity.
format	article
author	Helio H. Checon Guilherme N. Corte Yasmina M. L. Shah Esmaeili A. Cecilia Z. Amaral
author_facet	Helio H. Checon Guilherme N. Corte Yasmina M. L. Shah Esmaeili A. Cecilia Z. Amaral
author_sort	Helio H. Checon
title	Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
title_short	Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
title_full	Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
title_fullStr	Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
title_full_unstemmed	Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
title_sort	nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/21ff1db4ce884ed19b09d1a6e3a340f9
work_keys_str_mv	AT heliohchecon nestednesspatternsandtheroleofmorphodynamicsandspatialdistanceonsandybeachfaunaecologicalhypothesesandconservationstrategies AT guilhermencorte nestednesspatternsandtheroleofmorphodynamicsandspatialdistanceonsandybeachfaunaecologicalhypothesesandconservationstrategies AT yasminamlshahesmaeili nestednesspatternsandtheroleofmorphodynamicsandspatialdistanceonsandybeachfaunaecologicalhypothesesandconservationstrategies AT aceciliazamaral nestednesspatternsandtheroleofmorphodynamicsandspatialdistanceonsandybeachfaunaecologicalhypothesesandconservationstrategies
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Nestedness patterns and the role of morphodynamics and spatial distance on sandy beach fauna: ecological hypotheses and conservation strategies

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