Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.

Historic processes are expected to influence present diversity patterns in combination with contemporary environmental factors. We hypothesise that the joint use of beta diversity partitioning methods and a threshold-based approach may help reveal the effect of large-scale historic processes on pres...

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Autores principales:	Andrés Baselga, Carola Gómez-Rodríguez, Jorge M Lobo
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/53e00fe1fdec4517abdd050e9588ca4a
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spelling	oai:doaj.org-article:53e00fe1fdec4517abdd050e9588ca4a2021-11-18T07:26:52ZHistorical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.1932-620310.1371/journal.pone.0032341https://doaj.org/article/53e00fe1fdec4517abdd050e9588ca4a2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22384222/?tool=EBIhttps://doaj.org/toc/1932-6203Historic processes are expected to influence present diversity patterns in combination with contemporary environmental factors. We hypothesise that the joint use of beta diversity partitioning methods and a threshold-based approach may help reveal the effect of large-scale historic processes on present biodiversity. We partitioned intra-regional beta diversity into its turnover (differences in composition caused by species replacements) and nestedness-resultant (differences in species composition caused by species losses) components. We used piecewise regressions to show that, for amphibian beta diversity, two different world regions can be distinguished. Below parallel 37, beta diversity is dominated by turnover, while above parallel 37, beta diversity is dominated by nestedness. Notably, these regions are revealed when the piecewise regression method is applied to the relationship between latitude and the difference between the Last Glacial Maximum (LGM) and the present temperature but not when present energy-water factors are analysed. When this threshold effect of historic climatic change is partialled out, current energy-water variables become more relevant to the nestedness-resultant dissimilarity patterns, while mountainous areas are associated with higher spatial turnover. This result suggests that nested patterns are caused by species losses that are determined by physiological constraints, whereas turnover is associated with speciation and/or Pleistocene refugia. Thus, the new threshold-based view may help reveal the role of historic factors in shaping present amphibian beta diversity patterns.Andrés BaselgaCarola Gómez-RodríguezJorge M LoboPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 2, p e32341 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrés Baselga Carola Gómez-Rodríguez Jorge M Lobo Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.
description	Historic processes are expected to influence present diversity patterns in combination with contemporary environmental factors. We hypothesise that the joint use of beta diversity partitioning methods and a threshold-based approach may help reveal the effect of large-scale historic processes on present biodiversity. We partitioned intra-regional beta diversity into its turnover (differences in composition caused by species replacements) and nestedness-resultant (differences in species composition caused by species losses) components. We used piecewise regressions to show that, for amphibian beta diversity, two different world regions can be distinguished. Below parallel 37, beta diversity is dominated by turnover, while above parallel 37, beta diversity is dominated by nestedness. Notably, these regions are revealed when the piecewise regression method is applied to the relationship between latitude and the difference between the Last Glacial Maximum (LGM) and the present temperature but not when present energy-water factors are analysed. When this threshold effect of historic climatic change is partialled out, current energy-water variables become more relevant to the nestedness-resultant dissimilarity patterns, while mountainous areas are associated with higher spatial turnover. This result suggests that nested patterns are caused by species losses that are determined by physiological constraints, whereas turnover is associated with speciation and/or Pleistocene refugia. Thus, the new threshold-based view may help reveal the role of historic factors in shaping present amphibian beta diversity patterns.
format	article
author	Andrés Baselga Carola Gómez-Rodríguez Jorge M Lobo
author_facet	Andrés Baselga Carola Gómez-Rodríguez Jorge M Lobo
author_sort	Andrés Baselga
title	Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.
title_short	Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.
title_full	Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.
title_fullStr	Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.
title_full_unstemmed	Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.
title_sort	historical legacies in world amphibian diversity revealed by the turnover and nestedness components of beta diversity.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/53e00fe1fdec4517abdd050e9588ca4a
work_keys_str_mv	AT andresbaselga historicallegaciesinworldamphibiandiversityrevealedbytheturnoverandnestednesscomponentsofbetadiversity AT carolagomezrodriguez historicallegaciesinworldamphibiandiversityrevealedbytheturnoverandnestednesscomponentsofbetadiversity AT jorgemlobo historicallegaciesinworldamphibiandiversityrevealedbytheturnoverandnestednesscomponentsofbetadiversity
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Historical legacies in world amphibian diversity revealed by the turnover and nestedness components of Beta diversity.

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