Landscape context matters: local habitat and landscape effects on the abundance and patch occupancy of collared lizards in managed grasslands

Blevins, Emilie

doi:10.1007/s10980-011-9612-4

Cited by 28 publications

(12 citation statements)

References 56 publications

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“…Positive effects of fragment area are expected on several patch attributes, such as resource availability, territory size, habitat quality, and heterogeneity (Kitchener et al . , Blevins & With , Garda et al . ).…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, we found an equivalent number of publications reporting positive (N = 16) compared to no (N = 13) or negative (N = 3) effects of increasing fragment area on squamate species diversity indicators. Positive effects of fragment area are expected on several patch attributes, such as resource availability, territory size, habitat quality, and heterogeneity (Kitchener et al 1980, Blevins & With 2011, Garda et al 2013. Explanations for the opposite trend are less straightforward and generally involve ad hoc hypotheses (Andersson et al 2010, Cabrera-Guzm an & Reynoso 2012.…”

Section: Discussionmentioning

confidence: 99%

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The Conservation Value of Small Fragments For Atlantic Forest Reptiles

et al. 2016

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Loss and fragmentation of natural habitats are key contributors to the decline of populations and impoverishment of biological communities. The response to these disturbances can vary substantially among taxa and depends on spatial metrics of habitat fragments and the surrounding landscape. Herein we test how fragment area, shape, isolation, and matrix quality affect reptile richness, abundance, and occurrence in Brazilian Atlantic Forest fragments, a biodiversity hotspot with a poorly studied reptile fauna. We used 23 forest fragments, ranging from 2 to 30 hectares, surrounded by different matrix types, including sugarcane crop fields, cattle ranching, subsistence farmlands and rural communities. Species richness, total reptile abundance, population abundance, and occurrence probability of many species decreased with fragment area. Model selection suggested that fragment area is the main predictor of both richness and abundance, but matrix quality as well as fragment shape are also important predictors. For population abundance and occurrence probability, fragment area and proximity were the most important predictors followed by fragment shape and matrix quality, but the strength and even the sign of predictors varied substantially among species. We highlight that the value of small fragments should not be neglected for the conservation of Atlantic Forest reptiles.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Conservation Value of Small Fragments For Atlantic Forest Reptiles

et al. 2016

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“…Whether the presence or abundance of organisms is explained by characteristics at an immediate location or the area surrounding that location poses an interesting ecological question that is a major focus of ecological research (Thorton et al 2011) and presents important land management implications for many species (Lindenmayer and Nix 1993, Steffan-Dewenter et al 2002, Blevins and With 2011. Several studies have found that the occurrence and abundance patterns of some bird species during breeding and wintering periods respond more to the characteristics of the surrounding landscape than to local attributes (Pearson 1993, Grand and Cushman 2003, Boscolo and Metzger 2009.…”

Section: Introductionmentioning

confidence: 99%

Characteristics within and around stopover wetlands used by migratory shorebirds: Is the neighborhood important?

Albanese

Davis

2015

The Condor

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“…Research on the population dynamics of species could employ spatially-explicit population models capable of assessing the importance of landscape predictors to examine relationships between population vital rates and landscape structure (Dunning et al 1995). In some cases, models of species abundance or occupancy may suffice (Blevins and With 2011;Forcey et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Demonstrating a conceptual model for multispecies landscape pattern indices in landscape conservation

Tarr

2019

Landscape Ecol

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Context Our ability to understand the implications of prescriptions for landscape change (i.e., conservation actions) is constrained by the scopes of spatial pattern indices employed to describe landscapes. Most indices are suited for use with a single species or habitat, but the consequences of conservation actions are inherently multispecies. Hence, indices that incorporate information for multiple species are desirable. Objectives I describe a conceptual model for multispecies spatial pattern indices that incorporates species-specific habitat definitions and scales of landscape effects. I explore its utility for conservation planning and present insights and suggestions for its application. Methods The conceptual model employs habitat maps and estimates of species' scales of effect for habitat amount within landscapes surrounding sites. I present three indices rooted in the model: cumulative habitat amount, fragmented species count (FSC), and fragmented species-habitat count (FSHC). Comparisons of FSC and FSHC values at individual sites can reveal areas of high importance for protection as well as a measure of conservation design problem complexity. I demonstrate application of the indices for 40 species within a study area in the northwestern U.S. Results The indices provided a visualization of spatial patterns in multispecies habitat fragmentation across the study region, revealing areas with relatively high levels of habitat fragmentation and sites where habitat configuration is of high importance for the species analyzed. Conclusions The conceptual model provides descriptions of landscapes that can provide important context for conservation actions. Implementation may warrant further development, exploration of sensitivities, or case-specific refinements.

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Landscape context matters: local habitat and landscape effects on the abundance and patch occupancy of collared lizards in managed grasslands

Cited by 28 publications

References 56 publications

The Conservation Value of Small Fragments For Atlantic Forest Reptiles

The Conservation Value of Small Fragments For Atlantic Forest Reptiles

Characteristics within and around stopover wetlands used by migratory shorebirds: Is the neighborhood important?

Demonstrating a conceptual model for multispecies landscape pattern indices in landscape conservation

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