Concepts

Plant fitness measured through various components including fruit set, seed production, and seeds per plant

The total number of offspring that an individual successfully produces and rears to independence over their entire lifetime

Population size or density of individual species within a habitat

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

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

Proportion of individuals in a population showing signs of pathogen infection

Number of nests per unit area, calculated by dividing number of nests in each habitat by total area

F-statistics (FIS, FST, FIT) measuring genetic differentiation and inbreeding at different hierarchical levels

Measure of the level of inbreeding within a population, with values close to 1.0 indicating high levels of inbreeding

The ability of young trees to successfully establish and survive in a given environment

Proportion of flowering individuals that are primarily male-expressing

Aphid colony growth rate calculated as ln(n1)-ln(n0)/t where n1 and n0 are final and initial colony sizes

Demographic metric based on information theory quantifying the variation in social group composition across age and sex classes

Method to detect historical bottlenecks using ratio of number of alleles to range in allele sizes

Temperature coefficient measuring the rate of change of a biological process as a function of temperature

Mean Conservation Concern Score for present species calculated by multiplying species abundance by Partners in Flight rankings

Quantitative measure that sums multiple adversity measures experienced during early life to assess overall adversity burden

Proportional change in λs resulting from a proportional change in the mean or standard deviation of a single vital rate

Overall health and nutritional status of fish populations as indicated by relative weight and other bioindicators

Proportion of successful fruits produced out of total crosses attempted

The difference in days between an individual's peak bloom date and the population's peak bloom date at the site

A measure of per-capita mortality rate calculated as the natural logarithm of survival over time

Body mass at specified age divided by adult body mass

Scoring system (3-6) for mammary gland development based on nipple visibility and prominence as indicator of reproductive activity

An indicator of plumpness defined as 100 times the actual weight divided by the expected weight, suggesting the abundance of food available for each member of the population relative to the energy dem...

Average time organisms spend in a given stream reach before drifting, calculated as benthic abundance divided by drift rate