Journal ArticleDOI
Home range and resource selection by animals constrained by linear habitat features: an example of Blakiston's fish owl
TLDR
In this paper, the authors used a synoptic model of space use to explicitly account for resource selection of a species constrained by linear features in its environment to compare with traditional home range estimators.Abstract:
Summary
Typically in resource selection studies, the spatial extent of a home range is defined first and then the available resources within that perimeter are estimated. However, the home ranges (or habitats) of some animals are constrained by linear environmental features (e.g. rivers, shorelines). Traditional home range estimators often overestimate home range extent for such species, which can lead to spurious estimation of resource availability and selection.
We used a synoptic model of space use to explicitly account for resource selection of a species constrained by linear features in its environment to compare with traditional home range estimators. We used the endangered Blakiston's fish owl Bubo blakistoni in the Russian Far East as our example.
Mean annual home range size (± standard error) was more than three times larger when using kernel methods (30·3 ± 15·1 km2) than when using the synoptic model (9·4 ± 2·0 km2, n = 7).
Fish owls showed strong selection for areas within valleys, closer to waterways, closer to patches of permanently open water and with greater channel complexity than available sites.
Synthesis and applications. The synoptic model solves a long-standing problem in home range and resource selection studies because it provides an objective way to estimate the space use of a species whose habitat is constrained by linear features in its environment. Improvements in the accuracy of such estimations can lead to identification of important resources across landscapes, the development of more rigorous site-specific or landscape-scale management plans, and to scientifically defensible conservation or threat mitigation measures.read more
Citations
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Journal ArticleDOI
Identifying polar bear resource selection patterns to inform offshore development in a dynamic and changing Arctic
TL;DR: The authors estimated temporally-varying resource selection patterns for non-denning adult female polar bears in the Chukchi Sea population at two scales (i.e., home range and weekly steps) to identify factors predictive of polar bear use throughout the year, before any offshore development.
Journal ArticleDOI
Invariant polar bear habitat selection during a period of sea ice loss
TL;DR: It is shown that polar bear habitat selection in the Chukchi Sea has not changed between periods before and after significant sea ice loss, leading to a 75% reduction of highly selected habitat in summer, supporting the contention that summer will be a critical period for polar bears asSea ice loss continues.
Proceedings ArticleDOI
Temporal Isolation of Hard Real-Time Applications on Many-Core Processors
TL;DR: This work proposes an appropriate execution model, that restricts the applications behaviours, which has been implemented on the Kalray MPPA-256, and tested the correctness of the approach through a series of benchmarks and the implementation of a case study.
Journal ArticleDOI
Permissible Home Range Estimation (PHRE) in Restricted Habitats: A New Algorithm and an Evaluation for Sea Otters.
TL;DR: Using radio-telemetry data from sea otters, a new algorithm for estimating home ranges (hereafter Permissible Home Range Estimation, or “PHRE”) is developed and evaluated that reflects habitat suitability and will improve understanding of habitat-use requirements and, ultimately, aid in conservation efforts.
Journal ArticleDOI
Spatial replicates as an alternative to temporal replicates for occupancy modelling when surveys are based on linear features of the landscape
Anaïs Charbonnel,Anaïs Charbonnel,Frank D'Amico,Frank D'Amico,Aurélien Besnard,F. Blanc,Laëtitia Buisson,Laëtitia Buisson,Mélanie Némoz,Pascal Laffaille,Pascal Laffaille +10 more
TL;DR: It is shown that a survey based on adjacent spatial replicates for a mammal living along linear features of the landscape is a good compromise between cost and occupancy estimates, while using the Markovian occupancy model to estimate detection and occupancy.
References
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Journal ArticleDOI
A review of models of home range for animal movement
TL;DR: A comparison of the properties of all the models for home range considered here shows that both the Fourier Transform method proposed by D.J. Anderson and the kernel method are good because of their flexibility.