Concepts
78 concepts
Constant Connectance in Space model
Model developed to determine LARs based on SAR and simple properties of food webs including species richness, number of links and connectance
Dobzhansky-MacArthur hypothesis
Predicts that a species' high-elevation range limit is determined by harsh abiotic conditions whereas its low-elevation range limit is set by antagonistic species interactions
Fisher logseries distribution
A statistical distribution commonly observed in species abundance patterns, predicted by METE for undisturbed communities
Gloger's rule
A relationship between plumage coloration and climate variation, predicting that darker coloration due to pigmentation occurred in warmer, more humid tropical regions while lighter colors occurred in ...
Relative Interaction Intensity
Standardized measure of interaction strength ranging from -1 to 1, where positive values indicate facilitation and negative values indicate competition
Simpson diversity
competitive exclusion
Competition between fungal groups for limited plant photosynthate allocation
distance-decay relationship
Decrease in compositional similarity between communities with increasing geographic distance or environmental separation
electrolyte leakage
Loss of cellular electrolytes through compromised cell membranes, used as indicator of heat stress damage
energy equivalence principle
The principle asserting an inverse relationship between local population density and average metabolic rate of individuals in a species
faunal elements
Biogeographic classification of species based on their broader distributional affinities and evolutionary origins
herbarium specimen collection bias
Systematic tendency for historical plant collectors to preferentially collect rare or uncommon species while avoiding common, dominant species
high-temperature tolerance
Ability of plants to survive exposure to elevated temperatures, measured as lethal temperature causing 50% electrolyte leakage (LT50)
internode length
The distance between branch whorls on conifers, used to measure annual growth
keystone species complex
Sapsucker-fungus partnership that strongly influences the avian community by providing nest sites
microbial biogeography
The study of spatial distribution patterns of microorganisms and the factors controlling these patterns
nearest neighbor analysis
Statistical method comparing species composition near target individuals to background composition to identify spatial associations
photo-inhibition
Reduction in photosynthetic efficiency due to excess light exposure
point count surveys
Standardized method for observing and counting birds at fixed locations for specified time periods
secondary sexual characteristics
Traits like crown-stripe width, plumage coloration, and song that require additional energy to maintain and signal mate quality
snow mosquitoes
Univoltine species which develop from overwintered eggs in pools formed by melting snow water
soil horizon
Distinct layers in soil profile with different physical and chemical properties
soil sterilization
Experimental technique to remove soil microbial communities via autoclaving
temperature lapse rate
The rate at which temperature decreases with elevation, typically expressed as degrees Celsius per kilometer
transplanting
Moving native plants from one location to establish them in a disturbed site as a revegetation technique
upscaling
Extrapolation of species richness estimates from small plots to larger spatial scales using theoretical scaling relationships