Connectivity and vagility determine beta diversity and nestedness in North American and European freshwater fish

D Griffiths

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Aim This study assesses the extent to which biogeographic patterns in freshwaterfish beta diversity and nestedness are due to dispersal limitation, from differencesin dispersal opportunity across geographic areas and in dispersalability across species.Location Europe and the Atlantic and Pacific realms of North America (NA),east and west of the Continental Divide.Methods The effects of glaciation, realm shape, connectivity, current climateand vagility on regional-level beta diversity and nestedness were investigated.Turnover and nestedness-resultant dissimilarity components of beta diversityand the nestedness metric based on overlap and decreasing fill (NODF) werecalculated from regional species lists and the contributions of turnover andsegregation to nestedness structure quantified.Results Geographic distance was a stronger predictor of beta diversity thanclimatic and environmental heterogeneity distances. Species range shapes variedwith postglacial colonization direction, being more extensive in an east–westdirection in Europe than in Atlantic NA. Turnover increased with decliningconnectivity, in unglaciated areas, and in non-migratory species. Species weresignificantly less nested than expected because of high turnover and withinrealmheterogeneity in regional faunas. Deviations from nestedness were greaterin unglaciated areas and in migratory species. Non-migrants, but not migrants,exhibited coincident range boundaries.Main conclusions Spatial trends in beta diversity and nestedness in freshwaterfish in NA and Europe result primarily from differences in postglacial recolonizationopportunity across realms and in dispersal ability across species.Multiple metrics are necessary to identify the processes determining the spatialstructure of species assemblages.
    LanguageEnglish
    Pages1723-1733
    JournalJournal of Biogeography
    Volume44
    DOIs
    Publication statusPublished - 1 Aug 2017

    Fingerprint

    nestedness
    connectivity
    fish
    turnover
    Postglacial
    migratory species
    glaciation
    fill
    colonization
    fauna

    Keywords

    • anti-nestedness
    • beta diversity
    • dispersal limitation
    • freshwater fish
    • glaciation
    • idiosyncrasy
    • latitudinal gradients
    • nestedness-resultant dissimilarity
    • species segregation
    • turnover

    Cite this

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    title = "Connectivity and vagility determine beta diversity and nestedness in North American and European freshwater fish",
    abstract = "Aim This study assesses the extent to which biogeographic patterns in freshwaterfish beta diversity and nestedness are due to dispersal limitation, from differencesin dispersal opportunity across geographic areas and in dispersalability across species.Location Europe and the Atlantic and Pacific realms of North America (NA),east and west of the Continental Divide.Methods The effects of glaciation, realm shape, connectivity, current climateand vagility on regional-level beta diversity and nestedness were investigated.Turnover and nestedness-resultant dissimilarity components of beta diversityand the nestedness metric based on overlap and decreasing fill (NODF) werecalculated from regional species lists and the contributions of turnover andsegregation to nestedness structure quantified.Results Geographic distance was a stronger predictor of beta diversity thanclimatic and environmental heterogeneity distances. Species range shapes variedwith postglacial colonization direction, being more extensive in an east–westdirection in Europe than in Atlantic NA. Turnover increased with decliningconnectivity, in unglaciated areas, and in non-migratory species. Species weresignificantly less nested than expected because of high turnover and withinrealmheterogeneity in regional faunas. Deviations from nestedness were greaterin unglaciated areas and in migratory species. Non-migrants, but not migrants,exhibited coincident range boundaries.Main conclusions Spatial trends in beta diversity and nestedness in freshwaterfish in NA and Europe result primarily from differences in postglacial recolonizationopportunity across realms and in dispersal ability across species.Multiple metrics are necessary to identify the processes determining the spatialstructure of species assemblages.",
    keywords = "anti-nestedness, beta diversity, dispersal limitation, freshwater fish, glaciation, idiosyncrasy, latitudinal gradients, nestedness-resultant dissimilarity, species segregation, turnover",
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    Connectivity and vagility determine beta diversity and nestedness in North American and European freshwater fish. / Griffiths, D.

    In: Journal of Biogeography, Vol. 44, 01.08.2017, p. 1723-1733.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Connectivity and vagility determine beta diversity and nestedness in North American and European freshwater fish

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    N2 - Aim This study assesses the extent to which biogeographic patterns in freshwaterfish beta diversity and nestedness are due to dispersal limitation, from differencesin dispersal opportunity across geographic areas and in dispersalability across species.Location Europe and the Atlantic and Pacific realms of North America (NA),east and west of the Continental Divide.Methods The effects of glaciation, realm shape, connectivity, current climateand vagility on regional-level beta diversity and nestedness were investigated.Turnover and nestedness-resultant dissimilarity components of beta diversityand the nestedness metric based on overlap and decreasing fill (NODF) werecalculated from regional species lists and the contributions of turnover andsegregation to nestedness structure quantified.Results Geographic distance was a stronger predictor of beta diversity thanclimatic and environmental heterogeneity distances. Species range shapes variedwith postglacial colonization direction, being more extensive in an east–westdirection in Europe than in Atlantic NA. Turnover increased with decliningconnectivity, in unglaciated areas, and in non-migratory species. Species weresignificantly less nested than expected because of high turnover and withinrealmheterogeneity in regional faunas. Deviations from nestedness were greaterin unglaciated areas and in migratory species. Non-migrants, but not migrants,exhibited coincident range boundaries.Main conclusions Spatial trends in beta diversity and nestedness in freshwaterfish in NA and Europe result primarily from differences in postglacial recolonizationopportunity across realms and in dispersal ability across species.Multiple metrics are necessary to identify the processes determining the spatialstructure of species assemblages.

    AB - Aim This study assesses the extent to which biogeographic patterns in freshwaterfish beta diversity and nestedness are due to dispersal limitation, from differencesin dispersal opportunity across geographic areas and in dispersalability across species.Location Europe and the Atlantic and Pacific realms of North America (NA),east and west of the Continental Divide.Methods The effects of glaciation, realm shape, connectivity, current climateand vagility on regional-level beta diversity and nestedness were investigated.Turnover and nestedness-resultant dissimilarity components of beta diversityand the nestedness metric based on overlap and decreasing fill (NODF) werecalculated from regional species lists and the contributions of turnover andsegregation to nestedness structure quantified.Results Geographic distance was a stronger predictor of beta diversity thanclimatic and environmental heterogeneity distances. Species range shapes variedwith postglacial colonization direction, being more extensive in an east–westdirection in Europe than in Atlantic NA. Turnover increased with decliningconnectivity, in unglaciated areas, and in non-migratory species. Species weresignificantly less nested than expected because of high turnover and withinrealmheterogeneity in regional faunas. Deviations from nestedness were greaterin unglaciated areas and in migratory species. Non-migrants, but not migrants,exhibited coincident range boundaries.Main conclusions Spatial trends in beta diversity and nestedness in freshwaterfish in NA and Europe result primarily from differences in postglacial recolonizationopportunity across realms and in dispersal ability across species.Multiple metrics are necessary to identify the processes determining the spatialstructure of species assemblages.

    KW - anti-nestedness

    KW - beta diversity

    KW - dispersal limitation

    KW - freshwater fish

    KW - glaciation

    KW - idiosyncrasy

    KW - latitudinal gradients

    KW - nestedness-resultant dissimilarity

    KW - species segregation

    KW - turnover

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    EP - 1733

    JO - Journal of Biogeography

    T2 - Journal of Biogeography

    JF - Journal of Biogeography

    SN - 0305-0270

    ER -