Concepts

All (438)Explore Concept Graph

438 concepts

framework

elevational gradients

Spatial gradients in elevation that capture variation in temperature, soil age and type, disturbance regimes, and land-use histories providing important insights into how organisms, communities, and e...

general ecology138 papers
measurement

specific leaf area

The ratio of leaf area to dry mass, often associated with dry conditions as it reduces surface area and water loss from the leaf

general ecology61 papers
process

thermal performance

Temperature-dependent physiological and behavioral responses that affect organism fitness and population dynamics

general ecology53 papers
process

phenology

general ecology34 papers
measurement

aboveground primary productivity

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

general ecology32 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
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
theory

nutrient limitation

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

general ecology25 papers
measurement

stamen length

general ecology24 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
framework

bee conservation

Management strategies and techniques aimed at supporting and maintaining bee populations and their ecological functions.

general ecology20 papers
measurement

soil grain size

The distribution of particle sizes (sand, silt, clay percentages) in soil that affects water retention and plant performance

general ecology20 papers
phenomenon

body size variation

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

general ecology19 papers
measurement

floral volatile organic compounds

Chemical compounds emitted by flowers that contribute to floral scent and can influence pollinator attraction and plant-herbivore interactions

general ecology18 papers
phenomenon

pollinator decline

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

general ecology18 papers
framework

water quality standards

Regulatory standards for contaminant concentrations in water bodies including acute and chronic limits for aquatic life protection

general ecology18 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
measurement

functional traits

Measurable morphological and physiological characteristics of organisms that influence ecological performance

general ecology14 papers
concept

habitat quality

The ability of habitat to provide conditions appropriate for individual and population persistence, measured through resource availability and environmental conditions

general ecology14 papers
phenomenon

species range limits

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

general ecology14 papers
phenomenon

latitudinal gradient

general ecology13 papers
theory

animal personality

Consistent individual differences in behaviour across time and contexts, concept known as animal personality, behavioural types, temperament or coping styles

general ecology12 papers
metric

body condition

Measure of an animal's physical state, often assessed through body mass relative to size

general ecology12 papers
process

stream metabolism

general ecology12 papers
measurement

stress hormones

Cortisol and glucocorticoids that help regulate energy balance in animals and could determine dispersal behavior under stressful conditions

general ecology12 papers
measurement

leaf volumetric water content

Percentage of leaf biomass composed of water, calculated as difference between wet and dry weight divided by wet weight

general ecology11 papers
hypothesis

Resource Availability Hypothesis

Predicts that fast-growing plants in high resource environments invest less in defense because they can easily regrow after herbivory

general ecology10 papers
measurement

chlorophyll content

SPAD measurement of leaf chlorophyll concentration indicating photosynthetic capacity

general ecology10 papers
phenomenon

diel patterns

Daily activity patterns and rhythms in organism behavior

general ecology10 papers
measurement

host plant quality

general ecology10 papers
measurement

body size

general ecology9 papers
framework

environmental drivers

general ecology9 papers
phenomenon

nonlinear phenomena

Acoustic phenomena including subharmonics, biphonation, deterministic chaos, and warbles that occur when vocal production apparatus loses control

general ecology9 papers
framework

Rensch's Rule

general ecology8 papers
concept

climatic niche

The range of climate conditions that a species can tolerate, estimated from ecological niche models

general ecology8 papers
phenomenon

dust deposition

Fine particulate matter generated by vehicular traffic on unpaved roads that settles on plant surfaces

general ecology8 papers
process

invertebrate drift

Downstream movement of benthic invertebrates in flowing water either naturally or induced by disturbance

general ecology8 papers
framework

leaf economics spectrum

Describes consistent and strong correlations among plant functional traits reflecting the ecological tradeoffs and constraints of plants around resource use

general ecology8 papers
phenomenon

life span variation

The diversity in maximum life spans across mammalian species, ranging from months to over 200 years.

general ecology8 papers
measurement

light environment

Photosynthetically active radiation levels measured as percentage of full-sun radiation

general ecology8 papers
measurement

phenophases

Distinct phases of bee flight period: emergence from nests, timing of peak abundance of foragers, and senescence

general ecology8 papers
process

photoperiodic time measurement

The mechanism by which organisms measure day and night length to regulate seasonal activities like diapause

general ecology8 papers
measurement

stomatal conductance

general ecology8 papers
framework

time budget

The allocation of time among different activities that determines overall energy expenditure patterns

general ecology8 papers
process

biomass allocation

Distribution of plant growth and resources between aboveground (shoots) and belowground (roots) structures

general ecology7 papers
process

environmental filtering

general ecology7 papers
framework

resilience

general ecology7 papers
measurement

wing coloration

The color patterns and hues on butterfly wings produced by interaction of light with pigments on the wing scales

general ecology7 papers
measurement

Stem specific density

general ecology6 papers