Concepts

All (3,187)Explore Concept Graph

3,187 concepts

theory

nutritional niche partitioning

The concept that co-occurring species occupy distinct positions in multidimensional nutrient space to minimize competition and facilitate coexistence

community ecology38 papers
process

pollinator-mediated selection

Natural selection on floral traits that occurs through differential pollinator visitation and resulting differences in reproductive success

evolution38 papers
process

weathering

biogeochemistry38 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
theory

local adaptation

An evolutionary process in which a population evolves to become more suited to its local environment through natural selection, resulting in higher fitness in the home environment compared to individu...

evolution37 papers
measurement

nectar traits

Nectar volume, nectar sugar concentration, and total nectar sugar content measured from individual flowers

community ecology37 papers
process

groundwater-surface water interactions

The bidirectional exchange of water between groundwater aquifers and surface water bodies including streams, with groundwater contributing baseflow to streams and streams providing recharge to groundw...

hydrology36 papers
process

biogeochemical cycling

The cycling of chemical elements between living organisms and the physical environment, particularly carbon and nitrogen cycles

biogeochemistry35 papers
metric

heritability

The proportion of phenotypic variation in a trait that is due to genetic variation, estimated using parent-offspring regression methods

evolution35 papers
measurement

photosynthetic rate

The rate at which plants convert carbon dioxide and water into glucose using light energy, measured as gas exchange

physiological35 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
process

thermal constraints

Limitations on activity imposed by temperature and radiation conditions

climate35 papers
process

density dependence

Population regulation mechanism where demographic rates depend on population density through competition and resource limitation

population ecology34 papers
metric

lifetime reproductive success

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

population ecology34 papers
process

phenology

general ecology34 papers
framework

slow-fast continuum

A commonly used framework to describe variation in life-history strategies across species, ranking organisms from slow to fast living based on combinations of late reproduction, low reproductive rates...

population ecology34 papers
measurement

trait variation

population ecology34 papers
measurement

floral abundance

The total number of flowers available as nectar and pollen resources measured as flowers per meter

community ecology33 papers
measurement

aboveground primary productivity

Net production of plant biomass above ground surface measured as standing crop minus losses to herbivores

general ecology32 papers
process

climate change adaptation

The ability of organisms to adjust to changing climatic conditions through genetic, phenotypic, or behavioral changes

climate32 papers
process

detritus breakdown

The decomposition and fragmentation of dead organic matter by organisms, particularly the conversion of coarse to fine particulate organic matter

community ecology32 papers
process

facilitative interactions

Positive species interactions such as nurse plant effects by cushion-forming species that increase reproductive success for neighboring plants

community ecology32 papers
phenomenon

nitrogen pollution

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

biogeochemistry32 papers
measurement

dissolved organic matter

Major form of organic carbon across aquatic ecosystems, fueling stream metabolism and mediating key biogeochemical processes

biogeochemistry31 papers
framework

reciprocal transplant experiment

Experimental approach where organisms from different source populations are grown in different environments to test for local adaptation

methodological31 papers
process

soil organic carbon stabilization

Mechanisms by which organic carbon is protected from decomposition in soils through physical, chemical, and biological processes

biogeochemistry31 papers
measurement

vegetation community composition

The identity, abundance, and relative proportions of plant species within a defined area or habitat

community ecology31 papers
process

energy harvest capacity

The microbiome's ability to extract energy from dietary sources

biogeochemistry30 papers
process

facultative paedomorphosis

Alternative life history strategy where some individuals retain larval traits and become sexually mature in aquatic environment while others metamorphose to terrestrial adults

evolution30 papers
theory

fitness consequences

effects of behavioral or life history decisions on individual reproductive success and survival

population ecology30 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
measurement

floral morphology

The structural characteristics of flowers, categorized as complex or open based on accessibility to pollinators

community ecology28 papers
measurement

fractional snow cover area

Proportion of area covered by snow

hydrology28 papers
measurement

metal concentrations

biogeochemistry28 papers
framework

mountain hydrology

The study of water cycling processes in mountainous terrain, including complex interactions between snowpack dynamics, topography, vegetation, and subsurface water storage

hydrology28 papers
phenomenon

spatiotemporal variability

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

general ecology28 papers
theory

time allocation tradeoff

The finite time and energy budget forcing organisms to trade off between competing activities like foraging and vigilance

general ecology28 papers
process

ecological speciation

The formation of new species involves divergence of phenotypes and development of reproductive isolation, where initial divergence results from divergent natural selection and reproductive isolation a...

evolution27 papers
process

hydraulic connectivity

The degree to which water movement is facilitated or impeded through connected flow paths in subsurface sediments

hydrology27 papers
measurement

CO2 flux

biogeochemistry26 papers
methodology

mark-recapture

Method for estimating demographic parameters by marking individuals and tracking recapture histories over time

methodological26 papers
phenomenon

stand density effects

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

population ecology26 papers
metric

NDVI

Normalized Difference Vegetation Index, derived from satellite imagery to estimate vegetation greenness and photosynthetic activity

methodological25 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
process

invasive species impacts

Effects of non-native species on native community members and ecosystem processes

community ecology25 papers
theory

nutrient limitation

Growth limitation of organisms due to insufficient availability of essential nutrients like nitrogen or phosphorus

general ecology25 papers
measurement

pH

biogeochemistry25 papers