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Posts Tagged: predator

The Effect of Prey and Predator Densities on Wolf Predation

Predator kills rate (i.e., kills per predator per time) is routinely presupposed to depend exclusively on prey density. However, per capita rates of killing may typically depend on the density of both prey and predator. Unfortunately, our perception of many … read more

The Predator-Prey Power Law: Biomass Scaling Across Terrestrial and Aquatic Biomes

A surprisingly general pattern at very large scales casts light on the link between ecosystem structure and function. We show a robust scaling law that emerges uniquely at the level of whole ecosystems and is conserved across terrestrial and aquatic … read more

Cattle Mortality on a Predator-Friendly Station in Central Australia

Large predators are declining worldwide primarily due to hunting and persecution by humans, driven in large part by the livestock industry. Some ranchers are transitioning to “predator-friendly” farming by adopting nonlethal predator deterrents. On very large rangeland properties, such as … read more

Don’t Forget To Look Down – Collaborative Approaches To Predator Conservation

Finding effective ways of conserving large carnivores is widely recognized as a priority in conservation. However, there is disagreement about the most effective way to do this, with some favoring top-down ‘command and control’ approaches and others favoring collaboration. Arguments … read more

The Ecology of Stress: Predator-Induced Stress And the Ecology of Fear

Predator-induced stress has been used to exemplify the concept of stress for close to 100 years. Walter B. Cannon, one of the pioneers of the study of stress, used predatorinduced stress in wildlife in 1915 to exemplify the ‘fight or … read more

Saving large carnivores, but losing the apex predator?

Large terrestrial carnivores, e.g. wolves or bears, often play a key ecological role from their position at the apex of trophic systems. Changes to their populations reverberate through ecological communities; consequently their widespread decline in numbers and shrinking distribution due … read more

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