Academia.edu no longer supports Internet Explorer.
To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser.
2016, Landscape Ecology
Ecological applications : a publication of the Ecological Society of America
Effects of agriculture and topography on tropical amphibian species and communities2018 •
Habitat loss is the greatest threat to the persistence of forest-dependent amphibians, but it is not the only factor influencing species occurrences. The composition of the surrounding matrix, structure of stream networks, and topography are also important landscape characteristics influencing amphibian distributions. Tropical forests have high diversity and endemism of amphibians, but little is known about the specific responses of many of these species to landscape features. In this paper, we quantify the response of amphibian species and communities to landscape-scale characteristics in streams within the fragmented Brazilian Atlantic Forest. We surveyed amphibian communities during a rainy season in 50 independent stream segments using Standardized Acoustic and Visual Transect Sampling (active) and Automated Acoustic Recorders (passive) methods. We developed a hierarchical multi-species occupancy model to quantify the influence of landscape-scale characteristics (forest cover, a...
2014 •
Conservation Biology
Amphibian Distributions in a Landscape of Forests and Agriculture: an Examination of Landscape Composition and Conf iguration2002 •
2011 •
Ecological Applications
Amphibian Occurrence is Influenced by Current and Historic Landscape Characteristics2007 •
Understanding amphibian habitat associations allows us to assess the impacts of environmental change on amphibian populations. We studied the habitat associations of five anurans in the Chihuahuan Desert of southern New Mexico, USA. We used amphibian call surveys at 36 ephemeral water bodies and recorded an index of abundance for each species. We used GIS to identify vegetation communities (e.g., creosote bush, grassland, mesquite) within a buffer zone around each water site. We used ordinal logistic regression, Akaike’s information criterion (AICc), and canonical correspondence analysis to elucidate relationships between an index of anuran abundance and habitat variables. Creosote bush, mesquite, and grasses dominate the landscape in our study region. We detected Anaxyrus debilis (Green Toad) and Spea multiplicata (New Mexico Spadefoot Toad) most frequently (>70% of water bodies observed). Anaxyrus cognatus (Great Plains Toad), Scaphiopus couchii (Couch’s Spadefoot Toad), and Spea bombifrons (Plains Spadefoot Toad) were detected at about half of water bodies studied. Anaxyrus cognatus, Spea bombifrons, and Sp. multiplicata tended to co-occur at breeding sites. Anaxyrus cognatus and Sp. bombifrons were more common in mesquite habitat. Succulent desert scrub, though not common, seemed to affect Sc. couchii positively and A. debilis negatively. Spea multiplicata was more generalistic and did not show strong habitat associations. We did not find evidence that shrub encroachment has had negative impacts on the amphibian community in our study system and may even have had positive effects on anurans, especially A. cognatus and Sp. bombifrons.
Journal of Tropical Ecology
Influence of terrestrial habitat isolation on the diversity and temporal distribution of anurans in an agricultural landscape2011 •
Discontinuity between suitable aquatic and terrestrial habitats forces many amphibian species with aquatic larvae to undertake risky breeding migrations through disturbed environments, potentially contributing to population declines by reducing survival of adults and juveniles (Beckeret al. 2007). The north-western region of the state of São Paulo, Brazil, is characterized by fragments of mesophytic semideciduous forest and savanna, surrounded by a matrix of pasture, plantations and urban areas with only 4% of the remaining original vegetation of the state (Ribeiroet al. 2009). Currently, 36 anuran species have been recorded in this region, corresponding to almost 15% of the state's species (Araújoet al. 2009). The anuran species of this region are associated with open environments or are widely distributed in the different Brazilian biomes (Duellman 1999). Silva & Rossa-Feres (2007) showed the importance of forest fragments in this region for 12 anuran species that breed in poo...
Acta Oecologica-international Journal of Ecology
Amphibian diversity increases in an heterogeneous agricultural landscape2015 •
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.
Landscape Ecology
Assessing the potential impacts of alternative landscape designs on amphibian population dynamics2003 •
Biological Conservation
Effects of landscape characteristics on amphibian distribution in a forest-dominated landscape2005 •
International Journal of Applied Earth Observation and Geoinformation
Importance of landscape features and Earth observation derived habitat maps for modelling amphibian distribution in the Alta Murgia National Park2015 •
Daniel Lara-Tufiño, Luis. M. Badillo-Saldaña,Raquel Hernández-Austria & Aurelio Ramírez-Bautista. PeerJ :e6390 DOI 10.7717/peerj.6390
Effects of traditional agroecosystems and grazing areas on amphibian diversity in a region of central Mexico2019 •
Agriculture, Ecosystems & Environment
Land-use heterogeneity by small-scale agriculture promotes amphibian diversity in montane agroforestry systems of northeast Colombia2018 •
Anais da Academia Brasileira de Ciências
Linking environmental drivers with amphibian species diversity in ponds from subtropical grasslands2015 •
Biological Conservation
Core terrestrial habitat for conservation of local populations of salamanders and wood frogs in agricultural landscapes2004 •
2013 •