snow-covered area mapping
Remote sensing technique to identify and quantify spatial extent of snow cover using satellite imagery
social complexity
A system is typically considered more complex if it contains more parts, more variability or types of parts, more connections or types of connections between parts or more layers of connected meaning
social constraints
social fence hypothesis
high density population reduces dispersal because immigration of new individuals will increase negative encounters
social mobility
The ability of individuals to move up or down in socioeconomic status within their lifetime
social position
social regulation
social structure
Organization of individuals within populations based on family groups and territorial patterns
social subordination hypothesis
Hypothesis that dominant individuals can force subordinates to leave natal territory through aggression or control over resources
social transmission
The process of scrounging new innovations that can efficiently diffuse novel traits through a population by social learning
social utility
sociality effects on communication
The hypothesis that social structure influences the evolution of individually distinctive communication signals
society formation
The process by which animals form social groups that share and defend space, distinguish group members from nonmembers, and may persist for many generations
socioeconomic status
The social standing or class of an individual or group, often measured as a combination of education, income and occupation
soil aggregation
Formation of stable soil structural units through binding of soil particles by organic compounds and microbial processes
soil nitrogen saturation
Loss of biodiversity and decreased soil nitrogen retention when nitrogen availability exceeds plant demand
soil nutrient enrichment
Process by which ant foraging and nesting activities alter soil chemistry by accumulating organic matter and nutrients near colonies
soil production rate
Rate of bedrock weathering to mobile soil, typically decreasing exponentially with soil depth
soil respiration temperature sensitivity
The degree to which soil carbon dioxide efflux rates change with soil temperature, typically quantified as Q10 or temperature response function parameters
soil thickness
Depth of mobile regolith layer from land surface to bedrock contact, controlling water, carbon, and nutrient dynamics
soil-plant-atmosphere-continuum
Water potential gradient system where water potential values are highest in soil, lowest in atmosphere, and intermediate in the plant, driving water movement upward
solid TOC
solid-phase microextraction
A sampling technique using polymer-coated fibers to extract and concentrate volatile organic compounds from headspace for analysis
solitary
solitary bees
Bee species where females provision individual nests independently, comprising over 85% of bee species but receiving less research attention than eusocial species.
solitary species
Species that live alone rather than in groups, potentially making changes in antipredator behavior more impactful to individual survival.
soluble reactive phosphorus
The dissolved phosphorus fraction immediately available for biological uptake, measured as the proximate cause of bloom formation
song repertoire size
The number of distinct syllables, phrases, or song types produced by an individual or population
soot formation
Process starting with PAH which stack into particles, then spheres, then agglomerates, finally mature soot
sorption-desorption
Reversible chemical process where contaminants attach to and detach from solid phase materials in aquifers
soundscape
The complete acoustic environment consisting of biotic and abiotic sounds
space-for-time substitution
Method assuming that spatial and temporal variation are equivalent by comparing soil carbon across an elevation gradient to make assumptions about change in rate of carbon sequestration
space-use overlap
measure of which individuals share critical resources of burrow sites and foraging areas
spallation surface production rate
spatial distribution modeling
spatial fire-scar reconstruction
Method using tree-ring fire scars to reconstruct historical fire patterns across landscapes
spatial interpolation
Method for estimating values at unmapped locations using known values at nearby locations
spatial memory
Ability of butterflies to remember and return to specific puddling locations using memory rather than immediate sensory cues
spatial pattern efficiency function
Objective function for spatial similarity assessment combining histogram intersection, correlation, and bias components
spatial proximity
Physical nearness or distance between individuals influencing social interaction probability
spatial subsidies
Transfer of energy, materials, or organisms across habitat boundaries that affects recipient communities
spatiotemporal filtering
Approach combining spatial distribution models and temporal phenological analyses to refine candidate taxa lists
spawning
specialist herbivore
Herbivorous insects that have evolved to feed on glucosinolate-producing plants without deleterious consequences
species overabundance
When species limit the abundance or occurrence of other resources or hinder an ecosystem process or human activity
species redundancy
species-site combinations
Analytical units defined as individual species occurring within 0.1° grid squares
specific differential phase
Range derivative of the propagational component of differential phase shift, intrinsically dependent on particle size and number concentration
spectral sensitivity
The relative efficiency of the eye to be stimulated and detect light or other signals, as a function of the wavelength of the signal
sperm storage
Retention of viable sperm in female spermatheca after mating for extended periods allowing delayed fertilization
