Habitat Selection and Movement Patterns of California Golden Trout in Degraded and Recovering Stream Sections in the Golden Trout Wilderness, California

Author(s):  
Kathleen R. Matthews
2020 ◽  
Vol 23 ◽  
pp. e01178
Author(s):  
Daniel Ariano-Sánchez ◽  
Rasmus Mohr Mortensen ◽  
Stefanie Reinhardt ◽  
Frank Rosell

2008 ◽  
Vol 91 (2-3) ◽  
pp. 325-335 ◽  
Author(s):  
Lyall F. Bellquist ◽  
Christopher G. Lowe ◽  
Jennifer E. Caselle

2017 ◽  
Vol 95 (11) ◽  
pp. 821-828 ◽  
Author(s):  
Julia Sunga ◽  
Josh Sayers ◽  
Karl Cottenie ◽  
Christopher J. Kyle ◽  
Danielle M. Ethier

Road mortality is identified as a threat to American badger (Taxidea taxus (Schreber, 1777)) populations across Canada. Understanding habitat selection and movement in relation to roads is therefore vital to their conservation. Using telemetry data and road-kill locations of badgers in southwestern Ontario, we examined the relationship between habitat selection, movement patterns, and roads at three spatial scales. At the study-area scale, we assessed the effects of habitat attributes on burrow site selection. Several individuals placed their burrows closer to primary highways than expected, suggesting that badgers are not sensitive to human disturbances at this scale. Using straight-line movement trajectories between burrows, we analyzed individual movement patterns within home ranges. All badgers showed some degree of road avoidance, either crossing fewer roads or roads that posed lower mortality risk. At the road-crossing scale, we compared landscape features surrounding road-kill locations to random locations along the same roadway. There was a positive relationship between road-kill locations and number of water-based linear features and higher density of hedgerow cover. Our results provide evidence that badger movement is influenced by roads at multiple scales, which has important implications for managers interested in developing road-mitigation strategies for this endangered population.


2017 ◽  
Vol 95 (6) ◽  
pp. 433-442 ◽  
Author(s):  
Luke A. Groff ◽  
Aram J.K. Calhoun ◽  
Cynthia S. Loftin

Identification of essential habitat is a fundamental component of amphibian conservation; however, species with complex life histories frequently move among habitats. To better understand dynamic habitat use, we evaluated Wood Frog (Lithobates sylvaticus (LeConte, 1825)) habitat selection and movement patterns during the spring migration and foraging periods and described the spatiotemporal variability of habitats used during all annual life-history periods. We radio-tracked 71 frogs in Maine during 2011–2013 and evaluated spring migration, foraging activity center (FAC), and within-FAC habitat selection. Telemetered frogs spent the greatest percentage of each field season in hibernacula (≥54.4%), followed by FACs (≥25.5%), migration habitat (≥16.9%), and breeding sites (≥4.5%). FACs ranged 49 – 1 335 m2 (568.0 ± 493.4 m2) and annual home ranges spanned 1 413 – 32 165 m2 (11 780.6 ± 12 506.1 m2). During spring migration, Wood Frogs exhibited different movement patterns (e.g., turn angles), selected different habitat features, and selected habitat features less consistently than while occupying FACs, indicating that the migration and foraging periods are ecologically distinct. Habitat-use studies that do not discriminate among annual life-history periods may obscure true ecological relationships and fail to identify essential habitat necessary for sustaining amphibian populations.


PLoS ONE ◽  
2016 ◽  
Vol 11 (11) ◽  
pp. e0167254 ◽  
Author(s):  
Juliana Rechetelo ◽  
Anthony Grice ◽  
April Elizabeth Reside ◽  
Britta Denise Hardesty ◽  
James Moloney

2020 ◽  
Vol 47 (4) ◽  
pp. 359
Author(s):  
Dana L. Karelus ◽  
J. Walter McCown ◽  
Brian K. Scheick ◽  
Madelon van de Kerk ◽  
Benjamin M. Bolker ◽  
...  

Context Animals' use of space and habitat selection emerges from their movement patterns, which are, in turn, determined by their behavioural or physiological states and extrinsic factors. Aim The aims of the present study were to investigate animal movement and incorporate the movement patterns into habitat selection analyses using Global Positioning System (GPS) location data from 16 black bears (Ursus americanus) in a fragmented area of Florida, USA. Methods Hidden Markov models (HMMs) were used to discern the movement patterns of the bears. These results were then used in step-selection functions (SSFs) to evaluate habitat selection patterns and the factors influencing these patterns. Key results HMMs revealed that black bear movement patterns are best described by three behavioural states: (1) resting (very short step-lengths and large turning angles); (2) encamped (moderate step-lengths and large turning angles); and (3) exploratory (long step-lengths and small turning angles). Bears selected for forested wetlands and marsh wetlands more than any other land cover type, and generally avoided urban areas in all seasons and when in encamped and exploratory behavioural states. Bears also chose to move to locations farther away from major roads. Conclusions Because habitat selection is influenced by how animals move within landscapes, it is essential to consider animals' movement patterns when making inferences about habitat selection. The present study achieves this goal by using HMMs to first discern black bear movement patterns and associated parameters, and by using these results in SSFs to investigate habitat selection patterns. Thus, the methodological framework developed in this study effectively incorporates state-specific movement patterns while making inferences regarding habitat selection. The unified methodological approach employed here will contribute to an improved understanding of animal ecology as well as informed management decisions. Implications Conservation plans focused on preserving forested wetlands would benefit bears by not only providing habitat for resting and foraging, but also by providing connectivity through fragmented landscapes. Additionally, the framework could be applied to species that follow annual cycles and may provide a tool for investigating how animals are using dispersal corridors.


Waterbirds ◽  
2013 ◽  
Vol 36 (4) ◽  
pp. 432-437 ◽  
Author(s):  
Jacopo G. Cecere ◽  
Licia Calabrese ◽  
Gerard Rocamora ◽  
Carlo Catoni

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