Journal ArticleDOI
Response of a small felid of conservation concern to habitat fragmentation
Mira M. Fleschutz,Nicolás Gálvez,Nicolás Gálvez,Guy Pe'er,Zoe G. Davies,Klaus Henle,Elke Schüttler,Elke Schüttler +7 more
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In this article, the authors evaluated the effect of habitat cover, fragmentation and anthropogenic pressure on the occupancy probability of leopardus guigna in privately-owned forest fragments.Abstract:
Habitat loss and fragmentation are major drivers of biodiversity loss. A key question, particularly relevant to carnivore conservation, is to which extent species are able to survive in human-modified landscapes. Currently, conservationists are concerned about the impact habitat fragmentation may have on the long-term persistence of the forest-dwelling guina (Leopardus guigna), given the increasingly modified landscapes in which they live. Here we evaluate the effect habitat cover, fragmentation and anthropogenic pressure have on the occupancy probability for guinas in privately-owned forest fragments. We collected camera-trap data from 100 temperate rainforest sites in Chile and used single-season occupancy modeling to evaluate the influence of 13 parameters of landscape structure/anthropogenic pressure and four parameters of detection probability on the ocurrence of guinas. The camera-trap survey data comprised 4168 camera-trap days and 112 independent records of guinas. Surprisingly, fragmented (defined as having a high perimeter-to-area ratio) and moderately sized habitat patches best predicted site occupancy. Occupancy also increased where habitat patches were closer to continuous forest and nearer to buildings. Our results imply that guinas can benefit from a high degree of edge type habitats in fragmented landscapes, capable of adapting to habitat fragmentation in the proximity to large continuous forest patches. This suggests that guinas have a broader niche than previously believed. Additionally, the guina is tolerant of human infrastructure. Further research is required to identify potential ecological traps, long-term source-sink dynamics, and the habitat loss/fragmentation threshold beyond which guina populations are no longer viable.read more
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A review of camera trapping for conservation behaviour research
Anthony Caravaggi,Peter B. Banks,A. Cole Burton,Caroline M. V. Finlay,Peter M. Haswell,Matt W. Hayward,Matt W. Hayward,Marcus Rowcliffe,Michael Wood +8 more
TL;DR: Three promising areas of study are discussed: (1) documenting anthropogenic impacts on behaviour; (2) incorporating behavioural responses into management planning and (3) using behavioural indicators such as giving up densities and daily activity patterns.
Journal ArticleDOI
Evolutionary and ecological traps for brown bears Ursus arctos in human‐modified landscapes
Vincenzo Penteriani,María del Mar Delgado,Miha Krofel,Klemen Jerina,Andrés Ordiz,Fredrik Dalerum,Fredrik Dalerum,Fredrik Dalerum,Alejandra Zarzo-Arias,Giulia Bombieri +9 more
TL;DR: The suggestions of two anonymous referees and Nancy Jennings greatly improved the first draft of the manuscript as mentioned in this paper, which was financially supported by the Excellence Project CGL2017-82782-P financed by the Spanish Ministry of Economy, Industry and Competitiveness (MINECO), the Agencia Estatal de Investigacion and the Fondo Europeo de Desarrollo Regional of the European Union.
Journal ArticleDOI
Cost-efficient effort allocation for camera-trap occupancy surveys of mammals
TL;DR: In this article, the authors examine camera-trap survey costs as a function of the number of sample units (SUs) and sampling occasions, linking costs to precision in occupancy estimation, and evaluate survey effort trade-offs for hypothetical species representing different levels of occupancy and detection probability to identify optimal design strategies.
Journal ArticleDOI
A spatially integrated framework for assessing socioecological drivers of carnivore decline
Nicolás Gálvez,Nicolás Gálvez,Gurutzeta Guillera-Arroita,Freya A. V. St. John,Freya A. V. St. John,Elke Schüttler,Elke Schüttler,David W. Macdonald,Zoe G. Davies +8 more
TL;DR: It is identified that human‐dominated landscapes with large intensive farms can be of conservation value, as long as an appropriate network of habitat patches is maintained within the matrix, and an interdisciplinary approach to assessing the potential threats to a carnivore is applied.
Journal ArticleDOI
Landscape ecology of mammals
TL;DR: In this paper, the influence of spatial heterogeneity on ecological patterns and processes at spatial and temporal extents that are larger than those traditionally studied in ecology is examined, and the application of landscape ecological approaches to mammalian populations, communities and metacommunities began in and has increased steadily since the 1990s.
References
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