Predation risk and foraging behavior of the hoary marmot in Alaska

@article{Holmes2004PredationRA,
  title={Predation risk and foraging behavior of the hoary marmot in Alaska},
  author={Warren G. Holmes},
  journal={Behavioral Ecology and Sociobiology},
  year={2004},
  volume={15},
  pages={293-301}
}
  • W. G. Holmes
  • Published 9 August 1984
  • Environmental Science
  • Behavioral Ecology and Sociobiology
SummaryI observed hoary marmots for three field seasons to determine how the distribution of food and the risk of predation influenced marmots' foraging behavior. I quantified the amount of time Marmota caligata foraged in different patches of alpine meadows and assessed the distribution and abundance of vegetation eaten by marmots in these meadows. Because marmots dig burrows and run to them when attacked by predators, marmot-toburrow distance provided an index of predation risk that could be… 
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References

SHOWING 1-10 OF 56 REFERENCES
Behavioral ecology of alpine yellow-bellied marmots
TLDR
Environmental parameters, population dynamics, resource utilization patterns, and social dynamics were evaluated in terms of their relationships to population density, intraspecific competition, parent—offspring relations, and male territoriality.
Foods of the Hoary Marmot on Kenai Peninsula, Alaska
TLDR
The marmot populations from different mountains had similar diet-habitat characteristics even though less plant biomass was available in 1972 than in 1971 on two of three alpine study areas.
Predation and Risk in Foraging Minnows: Balancing Conflicting Demands
TLDR
The patch choice model is proposed as a working hypothesis that relates net energy intake to time spent in patches where predators, if present, reduce time spent foraging by their prey, and predicts that the relative benefit of high food patches is independent of the presence of predators.
The Social Biology of the Olympic Marmot
Influence of a predator on the optimal foraging behaviour of sticklebacks (Gasterosteus aculeatus L.)
TLDR
Three-spined sticklebacks' foraging behaviour changes such that they attack swarm regions of lower density which provide a lower feeding rate but should increase their ability to detect an approaching predator, predicted by a model using Pontryagin's principle of maximisation.
Social behaviour of a colony of the yellow-bellied marmot ()
An Experimental Test of the Effects of Predation Risk on Habitat Use in Fish
TLDR
Methods to predict the additional mortality expected on a cohort due to a reduction in growth rate are developed, and the potential for predation risk to enforce size—class segregation is discussed, which leads de facto to resource partitioning.
Demography of Yellow‐Bellied Marmont Populations
Marmot (Marmota flaiiventris) populations are colonial or satellite. The num- ber of adults of colonial populations is relatively stable; fluctuations occur primarily because of changes in numbers of
Foraging Strategies and the Avoidance of Predation by an Aquatic Insect, Notonecta Hoffmanni
TLDR
The degree of avoidance is related to the risk of predation and the possibility that feeding behavior represents an adaptive compromise between the conflicting demands of feeding efficiently and avoiding predators is discussed, and the effects on the predictions of optimal foraging theory of some common mecha- nisms by which notonectids avoid their predators are discussed.
Socioecology of Marmots: Female Reproductive Strategies
The relationship between female reproductive success and both spring food and hibernacula resources was examined in a high-altitude population of yellow-bellied marmots (Marmota flaviventris). The
...
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