Concepts

All (535)Explore Concept Graph

535 concepts

phenomenon

phenological mismatch

When organisms dependent on synchronized milestones adapt to environmental changes at different rates, causing their reproductive, feeding, and/or migration patterns to become asynchronous

climate202 papers
phenomenon

climate change

Global temperature increase and associated changes in precipitation patterns and extreme weather affecting ecosystems worldwide

climate155 papers
phenomenon

pollen limitation

Reduced seed set resulting from insufficient pollen receipt, particularly affecting females when hermaphrodite density and frequency increases

population ecology45 papers
phenomenon

climate-induced range shifts

Changes in species geographic distributions in response to changing climate conditions, typically involving movement to higher elevations or latitudes

climate41 papers
phenomenon

elevation gradient

landscape40 papers
phenomenon

intraspecific variation

Raw material on which ecological and evolutionary processes act - variation of traits within species that can mediate responses to biotic and abiotic factors

population ecology37 papers
phenomenon

pond hydroperiod

The frequency and duration of annual pond inundation vs. exposure, with categories including temporary ponds (dry annually in early summer), semi-permanent ponds (dry in late summer in most but not al...

hydrology35 papers
phenomenon

nitrogen pollution

Human-induced nitrogen input that has doubled biologically-available nitrogen on Earth

biogeochemistry32 papers
phenomenon

aridity

Environmental condition characterized by limited water availability

climate29 papers
phenomenon

microclimate heterogeneity

Variation in microclimatic conditions across small spatial scales, including differences in slope, aspect, and elevation that create diverse microclimatic niches

climate29 papers
phenomenon

temporal flexibility

Variation in interspecific interactions across time periods over which organisms co-occur that leads to flexible network structure

community ecology29 papers
phenomenon

environmental variability

Temporal variation in environmental conditions measured as standard deviation of temperature and vegetation indices

general ecology28 papers
phenomenon

spatiotemporal variability

Variations in aerosol concentrations and properties across both spatial scales and temporal scales

general ecology28 papers
phenomenon

stand density effects

How tree growth and biomass allocation patterns change based on local neighborhood tree density and competition

population ecology26 papers
phenomenon

Species-area relationship

The positive relationship between species richness and the surveyed area, described by the power-law S=cA^z where c is the intercept and z measures the rate of community turnover

community ecology25 papers
phenomenon

seasonal cycle

climate24 papers
phenomenon

algae bloom

Excessive extracellular stalk production by individual cells that coalesce to form a continuous mat covering the stream bottom

general ecology21 papers
phenomenon

hyporheic zone

Shallow subsurface zone where river and groundwater mix, serving as a source or sink of reactive nitrogen depending on water residence times and nitrogen transformation rates

hydrology20 papers
phenomenon

body size variation

Variation in organismal body size both within and between species, influenced by environmental and genetic factors

general ecology19 papers
phenomenon

courtship displays

Behavioral displays performed by animals during mating season to attract mates or compete for breeding opportunities

evolution19 papers
phenomenon

pollinator decline

Widespread reductions in pollinator abundance and diversity observed globally, attributed to multiple environmental stressors

general ecology18 papers
phenomenon

nesting preferences

The selective choices made by organisms regarding where to construct nests, influenced by environmental factors that affect offspring survival and reproductive success.

population ecology17 papers
phenomenon

petrogenic organic carbon

Organic carbon derived from sedimentary rocks that is often poorly quantified and influences soil organic carbon composition, age, and stability

biogeochemistry17 papers
phenomenon

anthropogenic disturbance

Human activities that impose novel challenges on a wide range of species, which can negatively influence individuals, populations, and communities as well as ecosystems

general ecology16 papers
phenomenon

genotype by environment interaction

Differential expression of genotypes across environmental conditions, indicating genetic variation in phenotypic plasticity

evolution16 papers
phenomenon

hybrid zone

A geographic region where genetically distinct populations meet and produce offspring of mixed ancestry

population ecology16 papers
phenomenon

biodiversity loss

Loss of species diversity through various processes including lack of adaptation to changing conditions, phenological changes, shifts in species abundance and ranges, and habitat loss

community ecology15 papers
phenomenon

meteorology

climate15 papers
phenomenon

spatial clustering

Alpine plants growing in clumps with multiple species interacting in close proximity, affecting microhabitats and species interactions

community ecology15 papers
phenomenon

biogeochemical heterogeneity

Spatial variability in biogeochemical processes and solute sources within watersheds, particularly between shallow soil zones and deeper groundwater zones

biogeochemistry14 papers
phenomenon

drought resilience

Ability of forest ecosystems to maintain function during water-limited conditions through adaptive water use strategies

climate14 papers
phenomenon

facultative sociality

Social systems where individuals have flexibility in their social behaviors and group membership rather than being obligately social

population ecology14 papers
phenomenon

meadow moisture gradient

Variation in soil moisture conditions creating distinct dry and wet meadow habitat types

landscape14 papers
phenomenon

philopatry

tendency of an organism to stay in or habitually return to a particular area

population ecology14 papers
phenomenon

sexual dimorphism

Differences between males and females in morphology, physiology, and/or behaviour resulting from differences in strength and shape of selection acting on each sex

evolution14 papers
phenomenon

species range limits

The geographic or environmental boundaries beyond which species cannot persist, potentially influenced by biotic interactions

general ecology14 papers
phenomenon

trophic synchrony

Temporal alignment between consumer energy requirements and food source availability across trophic levels

community ecology14 papers
phenomenon

gynodioecy

A mode of sex expression where male sterile (female) plants and hermaphroditic plants coexist within a population

evolution13 papers
phenomenon

latitudinal gradient

general ecology13 papers
phenomenon

spatial patterns

landscape13 papers
phenomenon

vocal individuality

The degree to which individuals can be discriminated from one another based on their vocalizations, quantified using information theory

population ecology12 papers
phenomenon

antisocial behavior

Directed aggression toward conspecifics, increasing spatial distancing from or decreasing huddling with unfamiliar conspecifics

population ecology11 papers
phenomenon

atmospheric boundary layer

The lowest part of the atmosphere directly influenced by the Earth's surface

climate11 papers
phenomenon

riparian zone

Streambed and boggy areas around streams as well as uphill water flows that are critical regions for DOC concentrations

hydrology11 papers
phenomenon

adaptation

evolution10 papers
phenomenon

concentration-discharge relationship

The relationship between solute concentrations and discharge in streams, widely used as a metric for interpreting interaction of hydrological processes, chemical transport, and mineral reactions in wa...

hydrology10 papers
phenomenon

diel patterns

Daily activity patterns and rhythms in organism behavior

general ecology10 papers
phenomenon

kairomones

Chemical cues released by predators that benefit prey by providing information about predator presence

community ecology10 papers
phenomenon

nectar-inhabiting bacteria

Bacterial communities that colonize and live within floral nectar, potentially affecting nectar chemistry and pollinator behavior

community ecology10 papers
phenomenon

polygamous mating system

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

population ecology10 papers