subnivium
subspecies designation
Classification subdivision characterized by common morphological features within a defined geographic area
substrate collection
substrate collection timing
succession
successional forces
successive refinements
summation of stochasticities of variance
summer warming
Increases in summer temperature over time periods relevant to vegetation monitoring studies
surface area hypothesis
The hypothesis that habitats with larger surface area provide more niches for arthropods, resulting in greater species richness
surface hoar
surface renewal theory
switch point theorem
Quantitative framework predicting that parameters influencing survival, mate encounter probability, or time available to mate affect female mating decisions
switching costs
Costs associated with changing between different behavioral tactics or strategies
symbiotic association
Obligate symbiotic association between a mycobiont (98% ascomycete fungi) and a photobiont (90% chlorophyte algae, 10% cyanobacteria)
synchronous vs asynchronous learning
Programming approaches that occur in real-time with simultaneous participation versus self-paced activities completed independently
synchronous vs asynchronous programming
synchrotron radiation
High-brightness X-ray source generated through the interaction of relativistic electrons with high magnetic fields
system science approach
tag retention
The percentage of implanted tags that remain in place over time without loss
taxon invariance
The principle that macroecological patterns should be independent of the taxonomic choices used to define assemblages
taxonomic impediment
The bottleneck in biodiversity research caused by insufficient taxonomic expertise and long wait times for species identification
taxonomic richness
Number of macroinvertebrate families per wetland
taxonomic tree structure
The hierarchical organization of species into higher taxonomic categories such as genera and families
temporal scale-dependence
The degree to which network structural properties vary depending on the temporal scale at which data are aggregated and analyzed
temporal variation in plant chemistry
Day versus night differences in plant chemical emissions and metabolite production
temporally forbidden links
terminal allocation
Changes in trait allocation that occur specifically in the last year or period before death
terminal electron acceptor
terminal electron acceptors
Elements like oxygen, iron, and nitrogen that accept electrons in microbial metabolic processes, used in order of energy yield
terminal notes
The ending notes of bird songs that may carry information about singer motivation and condition
terrestrial-aquatic interfaces
Boundary zones between terrestrial and aquatic ecosystems where material exchange occurs
territorial behavior
Female ground squirrels being more territorial while males move frequently to find mates
territoriality
testable predictions
theory compression
theory types
theory unification
The process by which deductive, quantitative theories based on first principles continually expand and may come close to or overlap with the domains of other theories, thereby increasing the potential...
thermal breadth
Temperature range over which feeding rate is 80% of maximum rate, indicating thermal generalization
thermal coupling strength
Slope of the relationship between Tleaf and Tair as both vary over time (β = ∂Tleaf/∂Tair)
thermal demagnetization
Progressive heating to remove magnetic components based on their unblocking temperatures to identify magnetic carriers
thermal developmental advantage
Developmental benefit gained from egg clusters oriented to intercept morning sun due to enhanced thermal conditions
thermal inertia
The ability of larger organisms to maintain elevated body temperatures longer due to lower surface area to volume ratios and slower cooling rates
thermal insulation properties
thermal melanism
thermal mismatch hypothesis
Theory that host susceptibility to pathogens increases as environmental conditions become less favorable for the host
thermal videography
Continuous infrared imaging to capture leaf temperature dynamics at high temporal resolution
thermal zone fidelity
Measure of how consistently salamanders remain within the same thermal zones of ponds across multiple survey periods
thermoneutral zone
The range of ambient temperatures within which an organism can maintain body temperature without metabolic cost, ranging from 10-25°C for adult marmots
thermoregulatory performance index
Slope of post-flight thoracic temperature against ambient temperature, where slopes closer to zero indicate better thermoregulatory ability
