Concepts

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

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

Changes in species geographic distributions in response to changing climate conditions, typically involving movement to higher elevations or latitudes

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

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

The frequency and duration of annual pond inundation vs. exposure, with categories including temporary ponds (dry annually in early summer), semi-permanent ponds (dry in late summer in most but not al...

The decomposition and fragmentation of dead organic matter by organisms, particularly the conversion of coarse to fine particulate organic matter

Alternative life history strategy where some individuals retain larval traits and become sexually mature in aquatic environment while others metamorphose to terrestrial adults

Growth limitation of organisms due to insufficient availability of essential nutrients like nitrogen or phosphorus

The spatial arrangement and connectivity of subpopulations across a landscape that influences local population dynamics

Excessive extracellular stalk production by individual cells that coalesce to form a continuous mat covering the stream bottom

The modification of environments by organisms in ways that influence resource availability for other species, exemplified by beaver dam construction creating pond habitats.

The network of feeding relationships among organisms in an ecosystem

Selective pressure relationships between host plants and their parasites that can shift based on environmental changes

Predation behavior where individuals consume members of their own species, particularly common in A. m. nebulosum populations targeting first year hatchlings

Daily mass gain during critical post-emergence development period in juvenile mammals

The progression through larval developmental stages with associated changes in size and feeding capacity

The contribution of animals to ecosystem nutrient fluxes through excretion, with supply determined by animal biomass, excretion rates, and time spent in the ecosystem

Age and sex characteristics affecting susceptibility to mortality

Taxa that are significantly associated with particular habitat conditions and can be used to assess ecosystem state or restoration success

Chemical cues released by predators that benefit prey by providing information about predator presence

The distribution of individuals across different size or age classes within a population

Temporary pond hydroperiod reduction that triggers behavioral and physiological responses in aquatic organisms

The range of climate conditions that a species can tolerate, estimated from ecological niche models

Downstream movement of benthic invertebrates in flowing water either naturally or induced by disturbance

The nutritional value of algae as food for aquatic consumers, typically measured by nutrient content

The emission of visible light by organisms following the absorption of shorter wavelengths of light

Caddisfly larvae ability to construct protective cases from environmental debris using silk-like string

Selective consumption behavior of invertebrates feeding on different types of organic detritus

The flow of energy through ecological systems, measured as invertebrate biomass transfer from terrestrial to aquatic environments

Addition of new individuals to insect populations through successful reproduction and development

Low nutrient conditions that select for microorganisms adapted to low substrate availability

Production of extracellular polymeric stalk material by diatoms when photosynthetic rates exceed cellular growth rates

Quantitative collection methods for invertebrates living on or in stream bottom substrates

The hypothesis that relationships between egg and juvenile densities are linear when egg densities are constrained below values where eggs or hatching juveniles suffer density-dependent losses

Body size when organisms transition from growth to reproduction, with important consequences for lifetime reproductive success

The relative proportions of chemical elements in biological systems

A measure of niche overlap calculated as SI = 1 - (1/2) Σᵢ |pᵢₖ - pⱼₖ| where values approach 1 when resource use curves coincide perfectly and approach 0 when they don't overlap

Co-occurrence patterns between species that reflect ecological interactions beyond shared environmental responses

The proportion of cells undergoing division within a population

Categorization of invertebrates based on feeding mechanisms: collector-gatherers, grazers, predators, shredders, and suspension-feeders

Species-specific selection for particular combinations of physical habitat characteristics like water depth, current velocity, and substrate size

Temporal variation in precipitation patterns expressed as coefficient of variation in monthly precipitation over 5 years

Male-first flowering phenology where flowers function first as males then as females

Some environments will be resource rich and produce a high amount of offspring (sources) while other environments will be resource low and produce a low amount of offspring (sinks)

A principle stating that allele and genotype frequencies remain constant in a population under certain conditions

Use of passive integrated transponder tags for remote detection and tracking of individual animals without need for recapture