Concepts

All (3,182)Explore Concept Graph

3,182 concepts

theory

ecology of fear

The concept that predator-prey interactions extend beyond direct predation and can influence prey behavior and habitat use through perceived predation risk

community ecology3 papers
framework

ecosystem-based management

general ecology3 papers
measurement

eddy covariance

Methodology for measuring turbulent fluxes using high-frequency measurements of vertical wind velocity and scalar concentrations

methodological3 papers
metric

effect sizes

methodological3 papers
metric

electivity index

A measure comparing the proportion of prey in predator diet to proportion in environment to detect selection or avoidance

methodological3 papers
phenomenon

elevation isotopic lapse rate

The systematic change in isotopic composition of precipitation with elevation due to progressive rainout and temperature effects

hydrology3 papers
process

energy conservation

Physiological and behavioral adaptations to minimize energy expenditure

general ecology3 papers
measurement

energy flux residual

methodological3 papers
theory

energy tradeoffs

Breeding birds must balance energy allocation between reproduction and survival, with parasites forcing energy towards immune response rather than reproductive traits

general ecology3 papers
process

epidemic dynamics

The temporal progression and patterns of disease spread through host populations

population ecology3 papers
theory

expectancy-value theory

methodological3 papers
measurement

extracellular enzyme activity

biogeochemistry3 papers
measurement

extracellular enzyme activity

Activity of enzymes secreted by soil microorganisms that catalyze decomposition of organic matter and provide assimilable carbon and nitrogen compounds

biogeochemistry3 papers
measurement

fSCA

hydrology3 papers
phenomenon

falling limb

hydrology3 papers
metric

fixation indices

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

population ecology3 papers
measurement

floral scent

population ecology3 papers
measurement

forest composition

community ecology3 papers
measurement

foresummer drought sensitivity

The slope of peak NDVI as a linear function of the June Palmer Drought Severity Index, representing plant productivity responses to early growing season drought conditions

climate3 papers
measurement

fraction modern (Fm)

methodological3 papers
measurement

gas chromatography-mass spectrometry

Analytical technique combining gas chromatography separation with mass spectrometry identification for analyzing volatile compounds

methodological3 papers
measurement

gas exchange velocities

biogeochemistry3 papers
theory

genetic constraints

Limitations on evolutionary divergence imposed by genetic architecture and patterns of genetic covariation

evolution3 papers
process

genetic rescue

Improvement in population fitness through the introduction of new genetic material

evolution3 papers
methodology

genome annotation

Computational identification and labeling of genes and other functional elements in genome sequences

molecular3 papers
process

glacial advances

Forward movement of ice sheets that leave behind terminal moraines and other glacial deposits

climate3 papers
phenomenon

group size effects

Changes in social behavior and group dynamics that result from variation in the number of individuals in a social group

population ecology3 papers
phenomenon

gustnadoes

climate3 papers
process

habitat fragmentation

Fragmented vegetation structure affecting bird population abundances and foraging opportunities

landscape3 papers
measurement

herbarium collections

Preserved plant specimens that are picked in the field, pressed flat, dried and attached to archival-grade paper with relevant information recorded, then stored in climate-controlled cabinets

methodological3 papers
phenomenon

heterozygote deficiency

Lower than expected frequency of heterozygous genotypes in a population

population ecology3 papers
process

honeydew production

The excretion of sugar-rich liquid waste by herbivorous hemipterans feeding on plant sap

community ecology3 papers
process

host selection

general ecology3 papers
phenomenon

hybrid breakdown

Reduced fitness in F2 hybrids compared to F1 hybrids, often attributed to genetic incompatibilities between nuclear genes

evolution3 papers
framework

hyper-resolution modeling

High spatial resolution climate modeling at sub-kilometer scales for hydrological applications

hydrology3 papers
phenomenon

hysteresis

Different trajectory of C-Q relationships during rising and falling limbs of hydrographs that indicate differences in timing of hydrological response from surface and subsurface compartments

hydrology3 papers
process

immune response

Physiological responses of the immune system to pathogens, trauma, stress and inflammation

general ecology3 papers
process

immunity

general ecology3 papers
metric

inbreeding coefficient

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

population ecology3 papers
methodology

individual tree detection

Automated algorithms for identifying and delineating individual trees from LiDAR point cloud data

methodological3 papers
model type

individual-based model

Computational model that simulates individual organisms and their life histories to understand population-level patterns

methodological3 papers
measurement

inorganic phosphorus

biogeochemistry3 papers
process

irrigation

hydrology3 papers
concept

juvenile fitness

Measures of early-life performance that may predict later survival and reproductive success

population ecology3 papers
phenomenon

last interglacial period

The most recent period in Earth's history (~116-130 ka) when temperatures were persistently warmer than today, specifically the Eemian period at 125 ka

climate3 papers
measurement

leaf number

population ecology3 papers
process

lethal sampling

Sampling methods that result in the death of collected organisms, potentially affecting population abundance and community structure

methodological3 papers
phenomenon

light gradient

Environmental gradient of light availability from open sun through intermediate shade to deep shade habitats

general ecology3 papers
metric

limits of detection

methodological3 papers
phenomenon

litter sex composition

The proportion of male versus female offspring in a litter affecting prenatal hormone exposure

population ecology3 papers