Biodiversity responses to land-use and restoration in a global biodiversity hotspot

Ant communities in Brazilian Cerrado

Keila Caroline Dalle Laste, Giselda Durigan, Alan N. Andersen

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Given that land-use change is the main cause of global biodiversity decline, there is widespread interest in adopting land-use practices that maintain high levels of biodiversity, and in restoring degraded land that previously had high biodiversity value. In this study, we use ant taxonomic and functional diversity to examine the effects of different land uses (agriculture, pastoralism, silviculture and conservation) and restoration practices on Cerrado (Brazilian savanna) biodiversity. We also examine the extent to which ant diversity and composition can be explained by vegetation attributes that apply across the full land management spectrum. We surveyed vegetation attributes and ant communities in five replicate plots of each of 13 land-use and restoration treatments, including two types of native vegetation as reference sites: cerrado sensu stricto and cerradão. Several land-use and restoration treatments had comparable plot richness to that of the native reference habitats. Ant species and functional composition varied systematically among land-use treatments following a gradient from open habitats such as agricultural fields to forested sites. Tree basal area and grass cover were the strongest predictors of ant species richness. Losses in ant diversity were higher in land-use systems that transform vegetation structure. Among productive systems, therefore, uncleared pastures and old pine plantations had similar species composition to that occurring in cerrado sensu stricto. Restoration techniques currently applied to sites that were previously Cerrado have focused on returning tree cover, and have failed to restore ant communities typical of savanna. To improve restoration outcomes for Cerrado biodiversity, greater attention needs to be paid to the re-establishment and maintenance of the grass layer, which requires frequent fire. At the broader scale, conservation planning in agricultural landscapes, should recognize the value of land-use mosaics and the risks of homogenization.

    Original languageEnglish
    Pages (from-to)313-326
    Number of pages14
    JournalAustral Ecology
    Volume44
    Issue number2
    Early online date16 Nov 2018
    DOIs
    Publication statusPublished - Apr 2019

    Fingerprint

    cerrado
    land restoration
    ant
    Formicidae
    land use
    biodiversity
    savanna
    vegetation
    savannas
    grass
    grasses
    pastoralism
    species diversity
    silviculture
    functional diversity
    conservation planning
    habitat
    vegetation structure
    homogenization
    habitats

    Cite this

    Dalle Laste, Keila Caroline ; Durigan, Giselda ; Andersen, Alan N. / Biodiversity responses to land-use and restoration in a global biodiversity hotspot : Ant communities in Brazilian Cerrado. In: Austral Ecology. 2019 ; Vol. 44, No. 2. pp. 313-326.
    @article{c47ae531892b4555a2bb5d86d28546fa,
    title = "Biodiversity responses to land-use and restoration in a global biodiversity hotspot: Ant communities in Brazilian Cerrado",
    abstract = "Given that land-use change is the main cause of global biodiversity decline, there is widespread interest in adopting land-use practices that maintain high levels of biodiversity, and in restoring degraded land that previously had high biodiversity value. In this study, we use ant taxonomic and functional diversity to examine the effects of different land uses (agriculture, pastoralism, silviculture and conservation) and restoration practices on Cerrado (Brazilian savanna) biodiversity. We also examine the extent to which ant diversity and composition can be explained by vegetation attributes that apply across the full land management spectrum. We surveyed vegetation attributes and ant communities in five replicate plots of each of 13 land-use and restoration treatments, including two types of native vegetation as reference sites: cerrado sensu stricto and cerrad{\~a}o. Several land-use and restoration treatments had comparable plot richness to that of the native reference habitats. Ant species and functional composition varied systematically among land-use treatments following a gradient from open habitats such as agricultural fields to forested sites. Tree basal area and grass cover were the strongest predictors of ant species richness. Losses in ant diversity were higher in land-use systems that transform vegetation structure. Among productive systems, therefore, uncleared pastures and old pine plantations had similar species composition to that occurring in cerrado sensu stricto. Restoration techniques currently applied to sites that were previously Cerrado have focused on returning tree cover, and have failed to restore ant communities typical of savanna. To improve restoration outcomes for Cerrado biodiversity, greater attention needs to be paid to the re-establishment and maintenance of the grass layer, which requires frequent fire. At the broader scale, conservation planning in agricultural landscapes, should recognize the value of land-use mosaics and the risks of homogenization.",
    keywords = "biodiversity conservation, functional composition, land mosaic, savanna, species richness",
    author = "{Dalle Laste}, {Keila Caroline} and Giselda Durigan and Andersen, {Alan N.}",
    year = "2019",
    month = "4",
    doi = "10.1111/aec.12676",
    language = "English",
    volume = "44",
    pages = "313--326",
    journal = "Australian Journal of Ecology",
    issn = "1442-9985",
    publisher = "Blackwell Publishing",
    number = "2",

    }

    Biodiversity responses to land-use and restoration in a global biodiversity hotspot : Ant communities in Brazilian Cerrado. / Dalle Laste, Keila Caroline; Durigan, Giselda; Andersen, Alan N.

    In: Austral Ecology, Vol. 44, No. 2, 04.2019, p. 313-326.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Biodiversity responses to land-use and restoration in a global biodiversity hotspot

    T2 - Ant communities in Brazilian Cerrado

    AU - Dalle Laste, Keila Caroline

    AU - Durigan, Giselda

    AU - Andersen, Alan N.

    PY - 2019/4

    Y1 - 2019/4

    N2 - Given that land-use change is the main cause of global biodiversity decline, there is widespread interest in adopting land-use practices that maintain high levels of biodiversity, and in restoring degraded land that previously had high biodiversity value. In this study, we use ant taxonomic and functional diversity to examine the effects of different land uses (agriculture, pastoralism, silviculture and conservation) and restoration practices on Cerrado (Brazilian savanna) biodiversity. We also examine the extent to which ant diversity and composition can be explained by vegetation attributes that apply across the full land management spectrum. We surveyed vegetation attributes and ant communities in five replicate plots of each of 13 land-use and restoration treatments, including two types of native vegetation as reference sites: cerrado sensu stricto and cerradão. Several land-use and restoration treatments had comparable plot richness to that of the native reference habitats. Ant species and functional composition varied systematically among land-use treatments following a gradient from open habitats such as agricultural fields to forested sites. Tree basal area and grass cover were the strongest predictors of ant species richness. Losses in ant diversity were higher in land-use systems that transform vegetation structure. Among productive systems, therefore, uncleared pastures and old pine plantations had similar species composition to that occurring in cerrado sensu stricto. Restoration techniques currently applied to sites that were previously Cerrado have focused on returning tree cover, and have failed to restore ant communities typical of savanna. To improve restoration outcomes for Cerrado biodiversity, greater attention needs to be paid to the re-establishment and maintenance of the grass layer, which requires frequent fire. At the broader scale, conservation planning in agricultural landscapes, should recognize the value of land-use mosaics and the risks of homogenization.

    AB - Given that land-use change is the main cause of global biodiversity decline, there is widespread interest in adopting land-use practices that maintain high levels of biodiversity, and in restoring degraded land that previously had high biodiversity value. In this study, we use ant taxonomic and functional diversity to examine the effects of different land uses (agriculture, pastoralism, silviculture and conservation) and restoration practices on Cerrado (Brazilian savanna) biodiversity. We also examine the extent to which ant diversity and composition can be explained by vegetation attributes that apply across the full land management spectrum. We surveyed vegetation attributes and ant communities in five replicate plots of each of 13 land-use and restoration treatments, including two types of native vegetation as reference sites: cerrado sensu stricto and cerradão. Several land-use and restoration treatments had comparable plot richness to that of the native reference habitats. Ant species and functional composition varied systematically among land-use treatments following a gradient from open habitats such as agricultural fields to forested sites. Tree basal area and grass cover were the strongest predictors of ant species richness. Losses in ant diversity were higher in land-use systems that transform vegetation structure. Among productive systems, therefore, uncleared pastures and old pine plantations had similar species composition to that occurring in cerrado sensu stricto. Restoration techniques currently applied to sites that were previously Cerrado have focused on returning tree cover, and have failed to restore ant communities typical of savanna. To improve restoration outcomes for Cerrado biodiversity, greater attention needs to be paid to the re-establishment and maintenance of the grass layer, which requires frequent fire. At the broader scale, conservation planning in agricultural landscapes, should recognize the value of land-use mosaics and the risks of homogenization.

    KW - biodiversity conservation

    KW - functional composition

    KW - land mosaic

    KW - savanna

    KW - species richness

    UR - http://www.scopus.com/inward/record.url?scp=85056663768&partnerID=8YFLogxK

    U2 - 10.1111/aec.12676

    DO - 10.1111/aec.12676

    M3 - Article

    VL - 44

    SP - 313

    EP - 326

    JO - Australian Journal of Ecology

    JF - Australian Journal of Ecology

    SN - 1442-9985

    IS - 2

    ER -