Concepts

The proportion of cells undergoing division within a population

Ephemeroptera, Plecoptera, and Trichoptera orders used as indicators of aquatic ecosystem health

Standard measure of organic biomass determined by ashing samples to remove inorganic material

Organic material found in pond sediments that serves as nutrient storage compartment

Patterns of stream flow including magnitude, timing, and duration of high and low flow periods

The rate at which predators consume prey, measured as prey mortality per predator per unit time

The body size of mayflies when they emerge as adults from aquatic larval stage

Behavioral activity of birds when captured in traps, measured as activity index from feeding to high distress behaviors