Concepts
12 concepts
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
arbuscular mycorrhizal fungi
Fungal symbionts that form specialized structures (arbuscules, vesicles) within plant root cells and are important for nutrient exchange
dark septate endophytes
A group of fungal endophytes characterized by dark-pigmented, septate hyphae that commonly colonize plant roots and can increase under environmental stress
maximum entropy theory of ecology
Theory that predicts patterns of distribution, abundance, and energetics using instantaneous values of community state variables including total area, total abundance, total species richness, and tota...
Theory of Island Biogeography
Framework predicting that larger islands have more species at equilibrium since extinction rates decline and colonization rates increase with increased area, and islands at greater distance from mainl...
host-microbiome interactions
The relationship between a host organism and its associated microbial community, including costs and benefits to host fitness
metabolic rate distribution over individuals
Distribution of metabolic rates over individuals in a community, obtained by summing over abundance
plant functional groups
Classification of species with similar characteristics into plant functional groups or plant functional types to reduce complexity in ecological communities
shrub encroachment
Shift toward woody plant encroachment into nonwoody meadows and grasslands
allelopathy
Chemical inhibition of one plant by another through secondary metabolites, tested via leachate applications
pioneer species
Species best suited for the environment that make up most of the vegetation in early successional stages
plant disease
Percentage of leaf area affected by pathogen symptoms including powdery mildew, rust, and other fungal diseases
