Morphological shifts in populations of generalist and specialist amphibians in response to fragmentation of the brazilian Atlantic forest

Henning Steinicke, Bernd GRUBER, Annegret Grimm, Wolf Rudiger Grosse, Klaus Henle

    Research output: Contribution to journalArticle

    1 Citation (Scopus)
    1 Downloads (Pure)

    Abstract

    Changes in morphological traits, such as body size, body condition, and leg length, are important indicators of changes to life history or habitat quality, which can affect the performance of individuals and therefore the persistence of populations under environmental change. Only very few studies assessed the effect of fragmentation on morphological traits. The few available studies on anurans found that in landscapes with less forest cover body size decreased. Therefore, we predict that body size should also be smaller in fragments compared to continuous forest. Body condition is a further trait closely related to individual performance and thus should decline with more adverse conditions, as is expected in fragments. We tested these hypotheses using snout-vent length, body mass, body condition, and tibia length as response variables. We collected data of a habitat generalist (Rhinella ornata) and a habitat specialist (Ischnocnema guentheri), both leaf-litter amphibian species, from three sites in a fragmented landscape (two isolated and one connected site) and one site in a contiguous part of the Atlantic Forest of Southeast Brazil. In the generalist species, snout-vent-length (SVL) and body mass were significantly lower in fragments compared to the contiguous forest control, whereas tibia length and body condition did not differ among sites. In contrast, SVL, body mass, and tibia length of the specialist species did not differ among sites, but body condition was marginally different among sites, being relatively low in one but not the other isolated fragment. The results indicate that different processes affect the morphology of the two species following habitat fragmentation.
    Original languageEnglish
    Pages (from-to)47-59
    Number of pages13
    JournalNature Conservation
    Volume13
    Issue number13
    DOIs
    Publication statusPublished - 15 Dec 2015

    Fingerprint

    body condition
    generalist
    amphibian
    fragmentation
    body mass
    body size
    habitat
    habitat fragmentation
    habitat quality
    forest cover
    leaf litter
    environmental change
    life history
    persistence

    Cite this

    Steinicke, Henning ; GRUBER, Bernd ; Grimm, Annegret ; Grosse, Wolf Rudiger ; Henle, Klaus. / Morphological shifts in populations of generalist and specialist amphibians in response to fragmentation of the brazilian Atlantic forest. In: Nature Conservation. 2015 ; Vol. 13, No. 13. pp. 47-59.
    @article{32692f18f0aa466ebe6cc7a0f9a273a9,
    title = "Morphological shifts in populations of generalist and specialist amphibians in response to fragmentation of the brazilian Atlantic forest",
    abstract = "Changes in morphological traits, such as body size, body condition, and leg length, are important indicators of changes to life history or habitat quality, which can affect the performance of individuals and therefore the persistence of populations under environmental change. Only very few studies assessed the effect of fragmentation on morphological traits. The few available studies on anurans found that in landscapes with less forest cover body size decreased. Therefore, we predict that body size should also be smaller in fragments compared to continuous forest. Body condition is a further trait closely related to individual performance and thus should decline with more adverse conditions, as is expected in fragments. We tested these hypotheses using snout-vent length, body mass, body condition, and tibia length as response variables. We collected data of a habitat generalist (Rhinella ornata) and a habitat specialist (Ischnocnema guentheri), both leaf-litter amphibian species, from three sites in a fragmented landscape (two isolated and one connected site) and one site in a contiguous part of the Atlantic Forest of Southeast Brazil. In the generalist species, snout-vent-length (SVL) and body mass were significantly lower in fragments compared to the contiguous forest control, whereas tibia length and body condition did not differ among sites. In contrast, SVL, body mass, and tibia length of the specialist species did not differ among sites, but body condition was marginally different among sites, being relatively low in one but not the other isolated fragment. The results indicate that different processes affect the morphology of the two species following habitat fragmentation.",
    keywords = "Amphibians, Body condition, Body size, Brazilian atlantic forest, Fragmentation, Habitat loss, habitat loss, body condition, body Size, Brazilian Atlantic forest, amphibians",
    author = "Henning Steinicke and Bernd GRUBER and Annegret Grimm and Grosse, {Wolf Rudiger} and Klaus Henle",
    year = "2015",
    month = "12",
    day = "15",
    doi = "10.3897/natureconservation.13.7428",
    language = "English",
    volume = "13",
    pages = "47--59",
    journal = "Nature Conservation",
    issn = "1314-3301",
    publisher = "Pensoft Publishers",
    number = "13",

    }

    Morphological shifts in populations of generalist and specialist amphibians in response to fragmentation of the brazilian Atlantic forest. / Steinicke, Henning; GRUBER, Bernd; Grimm, Annegret; Grosse, Wolf Rudiger; Henle, Klaus.

    In: Nature Conservation, Vol. 13, No. 13, 15.12.2015, p. 47-59.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Morphological shifts in populations of generalist and specialist amphibians in response to fragmentation of the brazilian Atlantic forest

    AU - Steinicke, Henning

    AU - GRUBER, Bernd

    AU - Grimm, Annegret

    AU - Grosse, Wolf Rudiger

    AU - Henle, Klaus

    PY - 2015/12/15

    Y1 - 2015/12/15

    N2 - Changes in morphological traits, such as body size, body condition, and leg length, are important indicators of changes to life history or habitat quality, which can affect the performance of individuals and therefore the persistence of populations under environmental change. Only very few studies assessed the effect of fragmentation on morphological traits. The few available studies on anurans found that in landscapes with less forest cover body size decreased. Therefore, we predict that body size should also be smaller in fragments compared to continuous forest. Body condition is a further trait closely related to individual performance and thus should decline with more adverse conditions, as is expected in fragments. We tested these hypotheses using snout-vent length, body mass, body condition, and tibia length as response variables. We collected data of a habitat generalist (Rhinella ornata) and a habitat specialist (Ischnocnema guentheri), both leaf-litter amphibian species, from three sites in a fragmented landscape (two isolated and one connected site) and one site in a contiguous part of the Atlantic Forest of Southeast Brazil. In the generalist species, snout-vent-length (SVL) and body mass were significantly lower in fragments compared to the contiguous forest control, whereas tibia length and body condition did not differ among sites. In contrast, SVL, body mass, and tibia length of the specialist species did not differ among sites, but body condition was marginally different among sites, being relatively low in one but not the other isolated fragment. The results indicate that different processes affect the morphology of the two species following habitat fragmentation.

    AB - Changes in morphological traits, such as body size, body condition, and leg length, are important indicators of changes to life history or habitat quality, which can affect the performance of individuals and therefore the persistence of populations under environmental change. Only very few studies assessed the effect of fragmentation on morphological traits. The few available studies on anurans found that in landscapes with less forest cover body size decreased. Therefore, we predict that body size should also be smaller in fragments compared to continuous forest. Body condition is a further trait closely related to individual performance and thus should decline with more adverse conditions, as is expected in fragments. We tested these hypotheses using snout-vent length, body mass, body condition, and tibia length as response variables. We collected data of a habitat generalist (Rhinella ornata) and a habitat specialist (Ischnocnema guentheri), both leaf-litter amphibian species, from three sites in a fragmented landscape (two isolated and one connected site) and one site in a contiguous part of the Atlantic Forest of Southeast Brazil. In the generalist species, snout-vent-length (SVL) and body mass were significantly lower in fragments compared to the contiguous forest control, whereas tibia length and body condition did not differ among sites. In contrast, SVL, body mass, and tibia length of the specialist species did not differ among sites, but body condition was marginally different among sites, being relatively low in one but not the other isolated fragment. The results indicate that different processes affect the morphology of the two species following habitat fragmentation.

    KW - Amphibians

    KW - Body condition

    KW - Body size

    KW - Brazilian atlantic forest

    KW - Fragmentation

    KW - Habitat loss

    KW - habitat loss

    KW - body condition

    KW - body Size

    KW - Brazilian Atlantic forest

    KW - amphibians

    UR - http://www.scopus.com/inward/record.url?scp=84957535562&partnerID=8YFLogxK

    UR - http://www.mendeley.com/research/morphological-shifts-populations-generalist-specialist-amphibians-response-fragmentation-brazilian-a

    U2 - 10.3897/natureconservation.13.7428

    DO - 10.3897/natureconservation.13.7428

    M3 - Article

    VL - 13

    SP - 47

    EP - 59

    JO - Nature Conservation

    JF - Nature Conservation

    SN - 1314-3301

    IS - 13

    ER -