Concepts

Mating system where males compete with one another over access to matelines consisting of groups of related females

The distribution of individuals across different size or age classes within a population

A within-individual process caused by deterioration in molecular and physiological function resulting in a decrease in survival probability and reproductive output with age

A gradual change in a trait across an environmental gradient, where width is expected to be proportional to dispersal distance divided by square root of difference in selection between ends of the cli...

Competition where individuals attempt to take over established breeding resources from other pairs

The measure of seed quality based on embryonic development and potential for successful germination

Division of labor in social insects with distinct morphological and behavioral castes including queens, workers, and males

Territorial behavior including alarm and warning calls to protect midden from squirrels and other mammals, with territories ranging from 0.5 to 1 hectares defended through vocalizations and chasing

Social organization where related females remain together and males typically disperse

Complete or near-complete elimination of local populations due to environmental catastrophe

The organization of genetic variation within and among populations, reflecting patterns of gene flow, drift, and selection

Rapid, synchronous mortality of aspen across large areas characterized by gradual sudden aspen decline associated with recent drought and temperature stress

Positive social interactions and bonds between individuals including behaviors like grooming, playing, and proximity maintenance

Population size below which populations are unable to rebound due to risks associated with genetic, demographic, and environmental stochasticity

A method to partition variance in population growth rate into contributions arising from temporal covariances of demographic parameters at different time lags

Caddisfly larvae ability to construct protective cases from environmental debris using silk-like string

Addition of new individuals to insect populations through successful reproduction and development

Mathematical model describing sigmoidal population growth with carrying capacity constraints

Genetic differentiation between populations across the genome, measured by allele frequency differences and population genetic statistics like FST

Scaled measure of how population growth rate responds to changes in environmental drivers

The average number of offspring produced by a typical individual during its life, calculated as the product of offspring number and survival probability

Differential behavioral responses based on whether female marmots are reproductive or non-reproductive

Production of extracellular polymeric stalk material by diatoms when photosynthetic rates exceed cellular growth rates

The likelihood that an individual survives from one time period to the next

The age at which females first reproduce, an important component of vertebrate life histories with effects on individual fitness and population dynamics

Burying beetle reproductive strategy where pairs bury small carrion for breeding and larval development

The equilibrium population size at which population growth rate equals zero

Theory suggesting that offspring sex ratios might vary according to maternal condition, hence females should vary the sex of their offspring according to their ability to physically invest in their of...

Investment by female bees in offspring through pollen provision size and number of brood cells produced