Concepts

All (848)Explore Concept Graph

848 concepts

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
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
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
measurement

precipitation

climate47 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
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
measurement

nectar traits

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

community ecology37 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
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
measurement

dissolved organic matter

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

CO2 flux

biogeochemistry26 papers
measurement

pH

biogeochemistry25 papers
measurement

spectral reflectance

Light absorption and reflection properties of tissues that vary with chemical composition and structure

methodological25 papers
measurement

arbuscular mycorrhizal fungi

Fungal symbionts that form specialized structures (arbuscules, vesicles) within plant root cells and are important for nutrient exchange

community ecology24 papers
measurement

dissolved oxygen

biogeochemistry24 papers
measurement

pollen provision composition

community ecology24 papers
measurement

porosity

hydrology24 papers
measurement

stamen length

general ecology24 papers
measurement

vigilance behavior

Time allocation to scanning for predators versus other activities like foraging, measured through specific postures and head orientations

population ecology24 papers
measurement

water table depths

hydrology24 papers
measurement

groundwater

hydrology23 papers
measurement

metagenome-assembled genome

Genomic bins reconstructed from metagenomic sequencing data representing individual microbial taxa

molecular23 papers
measurement

social phenotype

Quantifiable aspects of social behavior and social structure that can be subject to natural selection

population ecology23 papers
measurement

vital rates

Demographic rates including survival, growth, flowering probability, seed production, and germination that determine population dynamics

population ecology23 papers
measurement

floral resources

Availability of flowering plants that provide pollen and nectar for bee reproduction, quantified as floral density in standardized plots

community ecology22 papers
measurement

growing degree days

Temperature accumulation metric calculated using averaging method with base temperature, used to predict insect phenology and plant development

climate22 papers
measurement

transit time distributions

hydrology22 papers
measurement

photosynthetic storage

biogeochemistry21 papers
measurement

sensible heat flux

climate21 papers
measurement

specific conductance

biogeochemistry21 papers
measurement

functional traits

Plant characteristics that reflect ecological strategies, including specific leaf area and leaf dry matter content

community 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
measurement

concentration-discharge relationships

hydrology19 papers
measurement

glucosinolates

Secondary metabolites that mediate interactions with herbivores and pathogens in Brassicaceae

community ecology19 papers
measurement

hydraulic gradient

hydrology19 papers
measurement

canopy surface area

methodological18 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
measurement

reproduction

population ecology18 papers
measurement

soil pH

Measure of soil acidity/alkalinity that may influence plant phenotype expression

biogeochemistry18 papers
measurement

surface albedo

The fraction of solar radiation reflected by the surface, with snow-covered surfaces having high albedo (0.8) and snow-free surfaces having lower values

climate18 papers
measurement

flower color

community ecology17 papers