Data from: Alaskan brown bears (Ursus arctos) aggregate and display fidelity to foraging neighborhoods while preying on Pacific salmon along small streams ...
The interaction between brown bears (Ursus arctos) and Pacific salmon (Oncorhynchus spp.) is important to the population dynamics of both species and a celebrated example of consumer-mediated nutrient transport. Yet, much of the site-specific information we have about the bears in this relationship...
| Main Authors: | , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2019
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.1h8sr94 https://datadryad.org/stash/dataset/doi:10.5061/dryad.1h8sr94 |
| Summary: | The interaction between brown bears (Ursus arctos) and Pacific salmon (Oncorhynchus spp.) is important to the population dynamics of both species and a celebrated example of consumer-mediated nutrient transport. Yet, much of the site-specific information we have about the bears in this relationship comes from observations at a few highly visible but unrepresentative locations and a small number of radio-telemetry studies. Consequently, our understanding of brown bear abundance and behavior at more cryptic locations where they commonly feed on salmon, including small spawning streams, remains limited. We employed a non-invasive genetic approach (barbed wire hair snares) over four summers (2012-2015) to document patterns of brown bear abundance and movement among six spawning streams for sockeye salmon, O. nerka, in southwestern Alaska. The streams were grouped into two trios on opposite sides of Lake Aleknagik. Thus, we predicted that most bears would forage within only one trio during the spawning season ... : 2013 bears v2Brown bear detections for 2013 organized for genetic capture-mark-recapture analysis in MARKWirsing-Craig-Bears 2013 v2R script for 2013 bear detections data file.2014 bears v2Brown bear detections for 2014 organized for genetic capture-mark-recapture analysis in MARKWirsing-Craig-Bears 2014 v2R script for 2014 data file.2015 bears v2Brown bear detections for 2015 organized for genetic capture-mark-recapture analysis in MARKWirsing-Craig-Bears 2015 v2R script for 2015 data file. ... |
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