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• W2883829775 abstract "There is growing interest in the ecological significance of phenological diversity, particularly in how spatially variable resource phenologies (i.e. resource waves) prolong foraging opportunities for mobile consumers. While there is accumulating evidence of consumers moving across landscapes to surf resource waves, there is little data quantifying how phenological tracking influences resource consumption due to the challenge of documenting all the components of this ecological phenomenon (i.e., phenological variation, consumer movement, resource consumption, and consumer fitness). We examined the space use of GPS collared female brown bears to quantify the exploitation of a salmon resource wave by individual bears. We then estimated salmon consumption levels in the same individuals using stable isotope and mercury analyses of hair. We found strong positive relationships between time spent on salmon streams and percent salmon in assimilated diets (R2 = 0.70) and salmon mass consumed (R2 = 0.49). Salmon abundance varied 2.5-fold between study years, yet accounting for salmon abundance did not improve salmon consumption models. Resource abundance generally is viewed as the key variable controlling consumption levels and food web dynamics. However, our results suggest that in intact watersheds of coastal Alaska with abundant salmon runs, interannual variation in salmon abundance likely has less effect on salmon consumption than individual variation in bear foraging behavior. The results complement previous work to demonstrate the importance of phenological variation on bear foraging behavior and fitness." @default.
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• W2883829775 date "2018-07-20" @default.
• W2883829775 modified "2023-10-12" @default.
• W2883829775 title "Phenological tracking associated with increased salmon consumption by brown bears" @default.
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• W2883829775 doi "https://doi.org/10.1038/s41598-018-29425-3" @default.
• W2883829775 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6054687" @default.
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• W2883829775 hasPublicationYear "2018" @default.
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