NDLI: Assessing differences in connectivity based on habitat versus movement models for brown bears in the Carpathians

Content Provider	Springer Nature Link
Author	Ziółkowska, Elżbieta Ostapowicz, Katarzyna Radeloff, Volker C. Kuemmerle, Tobias Sergiel, Agnieszka Zwijacz Kozica, Tomasz Zięba, Filip Śmietana, Wojciech Selva, Nuria
Copyright Year	2016
Abstract	Connectivity assessments typically rely on resistance surfaces derived from habitat models, assuming that higher-quality habitat facilitates movement. This assumption remains largely untested though, and it is unlikely that the same environmental factors determine both animal movements and habitat selection, potentially biasing connectivity assessments.We evaluated how much connectivity assessments differ when based on resistance surfaces from habitat versus movement models. In addition, we tested how sensitive connectivity assessments are with respect to the parameterization of the movement models.We parameterized maximum entropy models to predict habitat suitability, and step selection functions to derive movement models for brown bear (Ursus arctos) in the northeastern Carpathians. We compared spatial patterns and distributions of resistance values derived from those models, and locations and characteristics of potential movement corridors.Brown bears preferred areas with high forest cover, close to forest edges, high topographic complexity, and with low human pressure in both habitat and movement models. However, resistance surfaces derived from the habitat models based on predictors measured at broad and medium scales tended to underestimate connectivity, as they predicted substantially higher resistance values for most of the study area, including corridors.Our findings highlighted that connectivity assessments should be based on movement information if available, rather than generic habitat models. However, the parameterization of movement models is important, because the type of movement events considered, and the sampling method of environmental covariates can greatly affect connectivity assessments, and hence the predicted corridors.
Starting Page	1863
Ending Page	1882
Page Count	20
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	31
Issue Number	8
e-ISSN	15729761
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-03-24
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Corridors GPS telemetry Least-cost modeling Maximum entropy Resistance surface Step selection functions Ursus arctos Landscape Ecology Ecology Nature Conservation Landscape/Regional and Urban Planning Sustainable Development Environmental Management
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Ecology Nature and Landscape Conservation

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Assessing differences in connectivity based on habitat versus movement models for brown bears in the Carpathians

Data from: Movement ecology of brown bears (Ursus arctos) in the Romanian Eastern Carpathians (Dataset)

Identification of functional corridors with movement characteristics of brown bears on the Kenai Peninsula, Alaska

Movement ecology of brown bears (Ursus arctos) in the Romanian Eastern Carpathians

Genotype data from: Restoration of transborder connectivity for Fennoscandian brown bears (Ursus arctos) (Dataset)

Influence of separating home range and dispersal movements on characterizing corridors and effective distances

Data from: Habitat segregation between brown bears and gray wolves in a human-dominated landscape (Dataset)

Forest management impacts on capercaillie (Tetrao urogallus) habitat distribution and connectivity in the Carpathians

Prioritization of habitat patches for landscape connectivity conservation differs between least-cost and resistance distances

Assessing differences in connectivity based on habitat versus movement models for brown bears in the Carpathians

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Assessing differences in connectivity based on habitat versus movement models for brown bears in the Carpathians

Data from: Movement ecology of brown bears (Ursus arctos) in the Romanian Eastern Carpathians (Dataset)

Identification of functional corridors with movement characteristics of brown bears on the Kenai Peninsula, Alaska

Movement ecology of brown bears (Ursus arctos) in the Romanian Eastern Carpathians

Genotype data from: Restoration of transborder connectivity for Fennoscandian brown bears (Ursus arctos) (Dataset)

Influence of separating home range and dispersal movements on characterizing corridors and effective distances

Data from: Habitat segregation between brown bears and gray wolves in a human-dominated landscape (Dataset)

Forest management impacts on capercaillie (Tetrao urogallus) habitat distribution and connectivity in the Carpathians

Prioritization of habitat patches for landscape connectivity conservation differs between least-cost and resistance distances

Assessing differences in connectivity based on habitat versus movement models for brown bears in the Carpathians