Prey depletion as a threat to the world's large carnivores [PDF]
Royal Society Open Science, 2016 Large terrestrial carnivores are an ecologically important, charismatic and highly endangered group of species. Here, we assess the importance of prey depletion as a driver of large carnivore endangerment globally using lists of prey species for each ...
Christopher Wolf, William J. Ripple
doaj +6 more sources
Spatial Risk Effects From Lions Compound Impacts of Prey Depletion on African Wild Dogs [PDF]
Ecology and EvolutionPrey depletion threatens many carnivore species across the world and can especially threaten low‐density subordinate competitors, particularly if subordinates are limited to low densities by their dominant competitors.
Ben Goodheart +14 more
doaj +6 more sources
Effects of human‐induced prey depletion on large carnivores in protected areas: Lessons from modeling tiger populations in stylized spatial scenarios [PDF]
Ecology and Evolution, 2019 Prey depletion is a major threat to the conservation of large carnivore species globally. However, at the policy‐relevant scale of protected areas, we know little about how the spatial distribution of prey depletion affects carnivore space use and ...
Neil H. Carter +2 more
doaj +3 more sources
Mechanisms of density dependence in juvenile salmonids: prey depletion, interference competition, or energy expenditure? [PDF]
Ecosphere, 2021 Density dependence is a strong regulator of animal populations, operating primarily through intraspecific competition for a limiting resource. Because food is generally limited in natural environments, it is typically assumed that increasing animal ...
Jean‐Michel O. Matte +2 more
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Direct evidence of a prey depletion "halo" surrounding a pelagic predator colony. [PDF]
Proc Natl Acad Sci U S A, 2021 SignificanceElucidating the mechanisms that regulate animal populations is a fundamental goal in ecology and is increasingly important at a time of unprecedented anthropogenic disturbance to ecosystems. Here, we present direct evidence of a phenomenon known as “Ashmole’s halo”: a zone of prey depletion that is hypothesized to form around aggregations ...
Weber SB +11 more
europepmc +6 more sources
To hunt or to rest: prey depletion induces a novel starvation survival strategy in bacterial predators. [PDF]
ISME J, 2021 Abstract The small size of bacterial cells necessitates rapid adaption to sudden environmental changes. In Bdellovibrio bacteriovorus, an obligate predator of bacteria common in oligotrophic environments, the non-replicative, highly motile attack phase (AP) cell must invade a prey to ensure replication.
Sathyamoorthy R +6 more
europepmc +4 more sources
Stochastic modelling of prey depletion processes [PDF]
Journal of Theoretical Biology, 2009 The modelling of prey-predator interactions is of major importance for the understanding of population dynamics. Classically, these interactions are modelled using ordinary differential equations, but this approach has the drawbacks of assuming continuous population variables and of being deterministic.
Louis-Félix Bersier, A C Davison
exaly +7 more sources
Long‐term data reveal fitness costs of anthropogenic prey depletion for a subordinate competitor, the African wild dog (Lycaon pictus) [PDF]
Ecology and EvolutionWithin carnivore guilds, dominant competitors (e.g., lions, Panthera leo) are limited primarily by the density of prey, while subordinate competitors (e.g., African wild dogs, Lycaon pictus) have been limited by the density of dominant competitors ...
Johnathan Reyes de Merkle +7 more
doaj +2 more sources
The impact on tigers of poaching versus prey depletion [PDF]
Journal of Applied Ecology, 2008 Summary There exists a continuing dilemma in prioritizing conservation actions for large carnivores. Habitat loss, poaching, and prey depletion have often been cited as the three primary threats, but there is debate over the relative importance of each.
Guillaume Chapron +2 more
exaly +2 more sources
Fitness consequences of prey depletion for the common goby Pomatoschistus microps [PDF]
Marine Ecology - Progress Series, 2002 Pomatoschistus microps (Pisces: Gobiidae), a predatory, benthic feeder, occurs in high densities in variable, shallow, muddy coastal waters where prey availability can be unpredictable. Here, we investigate the effect and consequences of prey depletion on the body condition and nest building of adult male fish using manipulative mesocosm experiments in
Mj Attrill, Martin J Attrill
exaly +2 more sources