Journal Article

Influences of scale on bat habitat relationships in a forested landscape in Nicaragua

Cushman, Samuel A., Martínez-Fonseca, José, Chambers, Carol L., Medina-Fitoria, Arnulfo, Chávez-Velásquez, Marlon

2016

Overview

Context Scale dependence of bat habitat selection is poorly known with few studies evaluating relationships among landscape metrics such as class versus landscape, or metrics that measure composition or configuration. This knowledge can inform conservation approaches to mitigate habitat loss and fragmentation. Objectives We evaluated scale dependence of habitat associations and scaling patterns of landscape metrics in relation to bat occurrence or capture rate in forests of southwestern Nicaragua. Methods We captured 1537 bats at 35 locations and measured landscape and class metrics across 10 spatial scales (100–1000 m) surrounding capture locations. We conducted univariate scaling across the 10 scales and identified scales and variables most related to bat occurrence or capture rate. Results Edge and patch density, at both landscape and class levels, were the most important variables across species. Feeding guilds varied in their response to metrics. Certain landscape and configuration metrics were most influential at fine (100 m) and/or broad (1000 m) spatial scales while most class and composition metrics were influential at intermediate scales. Conclusions These results provide insight into the scale dependence of habitat associations of bat species and the influence of fine and broad scales on habitat associations. The effects of scale, examined in our study and others from fine (100 m) to broad (5 km) indicate habitat relationships for bats may be more informative at larger scales. Our results suggest there could be general differences in scale relationships for different groups of landscape metrics, which deserves further evaluation in other taxonomic groups.

• Publisher: Springer Netherlands,Springer Nature B.V
• Subject: Biomedical and Life Sciences / Chiroptera / Composition / Configurations / Ecology / Environmental Management / Evaluation / Forests / Guilds / habitat destruction / Habitat fragmentation / Habitat loss / habitat preferences / Habitat selection / Habitats / Landscape Ecology / Landscape/Regional and Urban Planning / landscapes / Life Sciences / Nature Conservation / Nicaragua / Research Article / Scale models / Sustainable Development