Concepts

All (159)Explore Concept Graph

159 concepts

theory

reciprocal altruism

Individuals participate in seemingly altruistic behaviors because they have reciprocal relationships and take turns

evolution2 papers
theory

watershed resilience

The degree to which a watershed can rebound after perturbations to predicted increases in climate variability

hydrology2 papers
theory

Bandwagon effect

general ecology1 paper
theory

Beer-Lambert Law

Physical law relating absorbance to the molar absorption coefficient, path length, and concentration, used here to constrain functional group abundances

methodological1 paper
theory

Cramér-Rao Bound

Theoretical lower bound on the variance of unbiased estimators, providing performance benchmark

methodological1 paper
theory

DynaMETE

general ecology1 paper
theory

Expectancy-Value-Cost theory

A framework examining students' value of UREs as a predictor of their motivation to continue in research, incorporating individuals' expectations about success, perceptions of value and costs.

methodological1 paper
theory

Fisher's fundamental theorem

evolution1 paper
theory

Fractal Theory

A theory based on the assumption that distribution of individuals is scale free, meaning geometric patterns are the same whether viewed through microscope or telescope

community ecology1 paper
theory

Kirkpatrick-Barton model

Theoretical model predicting conditions under which chromosomal inversions can spread due to linkage of locally adapted alleles

evolution1 paper
theory

Köhler theory

climate1 paper
theory

Lotka-Volterra predator-prey model

population ecology1 paper
theory

MST

general ecology1 paper
theory

Newtonian worldview

general ecology1 paper
theory

Piggyback-the-Winner model

Model suggesting phages integrate into host genomes as prophages when microbial abundances and growth rates are high

community ecology1 paper
theory

Random Placement Model

A model based on the assumption that individuals within each species are randomly scattered over the plot or landscape

community ecology1 paper
theory

River Continuum Concept

Theoretical framework describing continuous changes in stream characteristics from headwaters to mouth

hydrology1 paper
theory

Sewall Wright's adaptive landscapes

evolution1 paper
theory

St-Venant equations

hydrology1 paper
theory

Weber's Law

A law relating to an animal's ability to differentiate among levels of stimuli, specifically about how animals detect and retrieve information, not how they choose to respond to perceived stimuli

general ecology1 paper
theory

Zahavi's handicap hypothesis

The hypothesis that sexually selected traits are honest signals of individual quality because they impose a cost to the bearer

evolution1 paper
theory

anti-parasitism strategy

Evolved adaptations that reduce vulnerability to parasites through various mechanisms including resource specialization

evolution1 paper
theory

bet-hedging

Life-history strategy that reduces variance in fitness at the expense of lower mean fitness by producing multiple phenotypes

evolution1 paper
theory

cheating in mutualisms

Activities of individuals or species that benefit from the rewards and services mutualisms exchange without offering any in return

community ecology1 paper
theory

colonization cycle

Theoretical framework suggesting that upstream flight of stream insect adults is necessary to maintain larval populations in upstream reaches that might otherwise be depleted by downstream drift of la...

population ecology1 paper
theory

compensatory mortality

The ecological principle that removing individuals may not reduce population size if sampling removes individuals that would have died anyway

population ecology1 paper
theory

competitive ability

The capacity of a species to successfully compete for limiting resources, which can be altered by parasitic stress

community ecology1 paper
theory

condition dependence

The production and structure of animal signals may be condition dependent and may provide more than one type of information to receivers

general ecology1 paper
theory

confounding effects

When three variables are all related to one another, creating spurious climate-phenology relationships because both variables change across years

methodological1 paper
theory

core microbiome

A set of organisms present across multiple sites that are not statistically associated with any specific location and represent shared metabolic potential

community ecology1 paper
theory

costs and benefits of sociality

Theoretical framework examining trade-offs between advantages and disadvantages of group living

general ecology1 paper
theory

cumulative reproductive cost

The hypothesis that reproductive costs accumulate over an individual's reproductive life span, with long-term costs occurring alongside or instead of short-term costs

population ecology1 paper
theory

diffusion wave approximation

hydrology1 paper
theory

disposable soma theory

Theory predicting that if reproduction leads to increased damage accumulation, fast reproducing individuals effectively bring forward their own death, with limited resources allocated among competing ...

evolution1 paper
theory

dual thinking

Cognitive framework involving two distinct processes: intuitive insights followed by deliberate rational analysis

methodological1 paper
theory

ecology of fear

A phenomenon where paedomorphic salamanders are more successful at cannibalizing smaller larvae than metamorphs in ponds with high numbers of paedomorphs

population ecology1 paper
theory

ecosystem control points

Locations within landscapes that have disproportionate influence on ecosystem processes relative to their spatial extent

general ecology1 paper
theory

efficient theory

Theories that should be built on, as much as possible, on first principles, be quantitative, law-like postulates about processes underlying a given class of phenomena in the natural world with well-es...

general ecology1 paper
theory

energy budget constraints

The hypothesis that energy budgets rather than time budgets constrain marmot activity patterns

population ecology1 paper
theory

equifinality

Concept that multiple different parameter combinations can produce equally acceptable model fits to observed data

methodological1 paper
theory

equilibrium stability

Analysis of whether population equilibria are locally stable or unstable based on eigenvalues of the Jacobian matrix

population ecology1 paper
theory

extended phenotype

The effect of genes beyond the boundaries of the individual organism, including effects on associated communities

evolution1 paper
theory

female monopolizability

The degree to which males can control access to females, influenced by factors such as female distribution in time and space

evolution1 paper
theory

fitness compensation

The need for females in gynodioecious species to compensate for their loss of male function through increased female fitness

evolution1 paper
theory

genre hybridity

The blending and intersection of multiple film genres within a single work, recognized as the norm rather than an exceptional feature of genre expression

methodological1 paper
theory

geographic mosaic model of co-evolution

Plants and herbivores become locally adapted to one another via a local evolutionary arms race

evolution1 paper
theory

good genes model

Sexual selection model where ornamental traits indicate genetic quality or parasite resistance

evolution1 paper
theory

graded signals

Communication signals that vary continuously rather than discretely to convey information about intensity or degree

community ecology1 paper
theory

group selection

Selection operating at the level of social groups rather than individuals

evolution1 paper
theory

growth form strategies

Fundamental differences between woody and herbaceous plants in resource acquisition and environmental adaptation

general ecology1 paper