Concepts

All (3,187)Explore Concept Graph

3,187 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
process

plant-pollinator mutualism

Mutually beneficial interaction between flowering plants and their animal pollinators where plants provide nectar/pollen rewards and animals provide pollination services

community ecology191 papers
phenomenon

climate change

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

climate155 papers
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
process

phenotypic plasticity

When a genotype produces different phenotypes under differing environmental conditions

evolution114 papers
process

pollinator foraging behavior

Behavioral choices and time allocation patterns of pollinators when visiting flowers, including flower choice, handling time, and visitation frequency

behavioral ecology114 papers
metric

species diversity

A measure of community diversity that accounts for both species richness and relative abundance, calculated using the Shannon-Weiner index

community ecology93 papers
theory

climate change effects on species interactions

The framework that climate affects species abundances and distributions both directly through physiological effects and indirectly through effects on multi-trophic species interactions

climate91 papers
process

antipredator behavior

Behaviors that reduce the likelihood of predation, including vigilance and evasion tactics

population ecology83 papers
process

snowpack persistence

Duration that snowpack remains on the ground providing water inputs to trees

hydrology75 papers
process

interspecific competition

Negative interactions between individuals of different species competing for limited resources

community ecology74 papers
measurement

space use

Way in which individuals distribute themselves across landscape, including movement patterns and spatial organization like home range size and overlap

landscape71 papers
measurement

snow cover duration

Number of days from autumn snow onset to spring snowmelt, providing temperature stabilization and protection for overwintering organisms

climate68 papers
process

groundwater storage dynamics

Temporal changes in groundwater storage volumes in response to climate variability and hydrologic forcing

hydrology62 papers
measurement

leaf water content

Fresh weight minus dry weight divided by dry weight

plant physiology61 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

pollination effectiveness

The ability of an organism to successfully transfer pollen between flowers for plant reproduction

community ecology58 papers
metric

reproductive success

Plant fitness measured through various components including fruit set, seed production, and seeds per plant

population ecology58 papers
measurement

floral visitation rate

Frequency of pollinator visits to flowers measured as visits per individual per minute or visits per flower per minute

community ecology54 papers
measurement

air temperature

climate53 papers
process

evapotranspiration

The combined process of water evaporation from soil and plant surfaces and water transpiration from plant leaves, representing a major component of the water budget that increases with warming tempera...

hydrology53 papers
process

thermal performance

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

general ecology53 papers
process

mutualistic relationships

Mutually beneficial herbivore-predator associations where sap-feeding insects provide honeydew food for ants in exchange for protection against predators

community ecology52 papers
process

winter survival

Survival of organisms through winter diapause or dormancy, often related to environmental conditions during overwintering

population ecology52 papers
framework

foraging ecology

The study of how animals search for and utilize food resources in their environment

population ecology50 papers
process

carbon cycling

biogeochemistry49 papers
methodology

climate change experiments

Manipulative experiments that alter abiotic conditions or reciprocally transplant individuals to understand and predict the effects of environmental change on biological communities and ecosystem func...

climate48 papers
process

ecosystem function

The functioning of ecosystems including processes such as carbon and nutrient cycling and storage, community- and ecosystem-level responses, and overall ecosystem properties and processes

community ecology48 papers
measurement

precipitation

climate47 papers
theory

early-life trade-offs

The concept that organisms face competing demands for limited resources during development that create trade-offs between different fitness components

population ecology45 papers
process

nectar robbing

Foraging behavior where floral visitors bypass the floral opening and access nectar by chewing holes in nectar spurs or using pre-existing holes

community ecology45 papers
phenomenon

pollen limitation

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

population ecology45 papers
process

biogeochemical reactions

biogeochemistry44 papers
process

drought stress

Physiological stress experienced by plants due to reduced water availability that can harm fitness by inducing leaf loss, reducing flower size, and decreasing seed production

climate44 papers
process

alarm communication

Vocal signals produced in response to predator detection to warn conspecifics or communicate threat information

community ecology43 papers
framework

neighborhood effects

The influence of surrounding plant species composition and density on individual plant fitness and associated herbivore behavior

community ecology43 papers
measurement

snow water equivalent

The depth of water that would result from melting the snowpack, quantified as peak snow water equivalent and snow disappearance rate

hydrology43 papers
framework

social network analysis

A method used to quantify social relationships that not only quantifies the direct relationship between a focal individual and its social partners, but also describes the position of the focal individ...

methodological42 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
theory

frequency-dependent selection

Selection where individual fitness depends on the local frequency rather than global frequency, creating population structure with groups varying in genetic and phenotypic composition

population ecology41 papers
process

herbivory

Consumption of plant material by animals, measured as browse occurrence on host plants

community ecology41 papers
process

nitrogen retention

biogeochemistry41 papers
theory

population dynamics

Changes in population size and structure over time driven by vital rates and environmental factors

population ecology41 papers
process

streamflow

hydrology41 papers
phenomenon

elevation gradient

landscape40 papers
process

trophic cascade

Indirect effects of predators on lower trophic levels mediated through changes in intermediate consumer behavior or abundance

community ecology40 papers
process

plant-microbial coupling

The coordination between plant and microbial diversity, wherein both communities experience large shifts in composition following disturbance or when a perturbation disrupts their coordinated response

community ecology39 papers
process

soil respiration

CO2 efflux from soils to atmosphere representing combination of autotrophic respiration (root respiration) and heterotrophic respiration (microbial decomposition)

biogeochemistry39 papers
measurement

flight initiation distance

The distance at which an individual initiates moving away from an approaching humans, reflecting flightiness of an animal in response to a potential predator

population ecology38 papers
process

nonconsumptive effects

Behavioral, physiological, and life-history changes that reduce the risk of predation but have associated energetic or fitness costs to prey individuals and populations

community ecology38 papers