Intraspecific variation

Collective behaviour can stabilize ecosystems

Collective behaviour is common in bacteria, plants, and animals, and thus across ecosystems, from biofilms to cities. With collective behaviour, social interactions among individuals propagate to affect the behaviour of groups, while group-level …

Quantifying the effects of intraspecific variation on predator feeding rates through nonlinear averaging

Theory suggests that intraspecific trait variation will alter species interaction strengths through nonlinear averaging when interaction strengths are nonlinear functions of individuals' traits. This effect is expected to be widespread, yet what …

Temporal shifts in intraspecific and interspecific diet variation among 3 stream predators

Intraspecific variation is increasingly recognized as an important factor in ecological interactions that can exceed the role of interspecific variation. Few studies, however, have examined how variation in intra- and interspecific resource use …

The influence of prey predictability on the foraging behavior and movement of intertidal predators

Fluctuations and spatial heterogeneity of habitat and resources is thought to underlie niche variation in animal populations, with intraspecific differences serving to produce or maintain population-, community-, or ecosystem-level patterns. …

State-structured species interactions and their consequences across levels of biological organization

A central challenge for ecology is to understand the dynamic nature of species interactions. A classic approach to community ecology assumes that individuals within a species are functionally identical and that consumer-resource dynamics can be …

Candidate causes, consequences, and estimation of individual diet specialization

Diet variation among individuals within populations is widespread. Often diet dierences among individuals are attributable to obvious differences among individuals such as age, sex, or morphology. However, growing evidence suggests that individual …

The application of Bayesian hierarchical models to quantify individual diet specialization

Intraspecific variation in ecologically relevant traits is widespread. In generalist predators in particular, individual diet specialization is likely to have important consequences for food webs. Understanding individual diet specialization …

Timescales alter the inferred strength and temporal consistency of intraspecific diet specialization

Many populations consist of individuals that differ substantially in their diets. Quantification of the magnitude and temporal consistency of such intraspecific diet variation is needed to understand its importance, but the extent to which different …

Structure and mechanism of diet specialisation: testing models of individual variation in resource use with sea otters

Studies of consumer‐resource interactions suggest that individual diet specialisation is empirically widespread and theoretically important to the organisation and dynamics of populations and communities. We used weighted networks to analyze the …

The Effect of Travel Loss on Evolutionarily Stable Distributions of Populations in Space

A key assumption of the ideal free distribution (IFD) is that there are no costs in moving between habitat patches. However, because many populations exhibit more or less continuous population movement between patches and traveling cost is a …