Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities

Abstract One of the key challenges to understanding patterns of β diversity is to disentangle deterministic patterns from stochastic ones. Stochastic processes may mask the influence of deterministic factors on community dynamics, hindering identification of the mechanisms causing variation in commu...

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Autores principales:	K.-L. Huttunen, H. Mykrä, J. Oksanen, A. Astorga, R. Paavola, T. Muotka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/41aecf94773043b99384bb40df828112
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spelling	oai:doaj.org-article:41aecf94773043b99384bb40df8281122021-12-02T12:32:41ZHabitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities10.1038/s41598-017-00550-92045-2322https://doaj.org/article/41aecf94773043b99384bb40df8281122017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00550-9https://doaj.org/toc/2045-2322Abstract One of the key challenges to understanding patterns of β diversity is to disentangle deterministic patterns from stochastic ones. Stochastic processes may mask the influence of deterministic factors on community dynamics, hindering identification of the mechanisms causing variation in community composition. We studied temporal β diversity (among-year dissimilarity) of macroinvertebrate communities in near-pristine boreal streams across 14 years. To assess whether the observed β diversity deviates from that expected by chance, and to identify processes (deterministic vs. stochastic) through which different explanatory factors affect community variability, we used a null model approach. We observed that at the majority of sites temporal β diversity was low indicating high community stability. When stochastic variation was unaccounted for, connectivity was the only variable explaining temporal β diversity, with weakly connected sites exhibiting higher community variability through time. After accounting for stochastic effects, connectivity lost importance, suggesting that it was related to temporal β diversity via random colonization processes. Instead, β diversity was best explained by in-stream vegetation, community variability decreasing with increasing bryophyte cover. These results highlight the potential of stochastic factors to dampen the influence of deterministic processes, affecting our ability to understand and predict changes in biological communities through time.K.-L. HuttunenH. MykräJ. OksanenA. AstorgaR. PaavolaT. MuotkaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q K.-L. Huttunen H. Mykrä J. Oksanen A. Astorga R. Paavola T. Muotka Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
description	Abstract One of the key challenges to understanding patterns of β diversity is to disentangle deterministic patterns from stochastic ones. Stochastic processes may mask the influence of deterministic factors on community dynamics, hindering identification of the mechanisms causing variation in community composition. We studied temporal β diversity (among-year dissimilarity) of macroinvertebrate communities in near-pristine boreal streams across 14 years. To assess whether the observed β diversity deviates from that expected by chance, and to identify processes (deterministic vs. stochastic) through which different explanatory factors affect community variability, we used a null model approach. We observed that at the majority of sites temporal β diversity was low indicating high community stability. When stochastic variation was unaccounted for, connectivity was the only variable explaining temporal β diversity, with weakly connected sites exhibiting higher community variability through time. After accounting for stochastic effects, connectivity lost importance, suggesting that it was related to temporal β diversity via random colonization processes. Instead, β diversity was best explained by in-stream vegetation, community variability decreasing with increasing bryophyte cover. These results highlight the potential of stochastic factors to dampen the influence of deterministic processes, affecting our ability to understand and predict changes in biological communities through time.
format	article
author	K.-L. Huttunen H. Mykrä J. Oksanen A. Astorga R. Paavola T. Muotka
author_facet	K.-L. Huttunen H. Mykrä J. Oksanen A. Astorga R. Paavola T. Muotka
author_sort	K.-L. Huttunen
title	Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
title_short	Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
title_full	Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
title_fullStr	Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
title_full_unstemmed	Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
title_sort	habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/41aecf94773043b99384bb40df828112
work_keys_str_mv	AT klhuttunen habitatconnectivityandinstreamvegetationcontroltemporalvariabilityofbenthicinvertebratecommunities AT hmykra habitatconnectivityandinstreamvegetationcontroltemporalvariabilityofbenthicinvertebratecommunities AT joksanen habitatconnectivityandinstreamvegetationcontroltemporalvariabilityofbenthicinvertebratecommunities AT aastorga habitatconnectivityandinstreamvegetationcontroltemporalvariabilityofbenthicinvertebratecommunities AT rpaavola habitatconnectivityandinstreamvegetationcontroltemporalvariabilityofbenthicinvertebratecommunities AT tmuotka habitatconnectivityandinstreamvegetationcontroltemporalvariabilityofbenthicinvertebratecommunities
_version_	1718393973431599104

Habitat connectivity and in-stream vegetation control temporal variability of benthic invertebrate communities

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