Concepts
219 concepts
phenological mismatch
When organisms dependent on synchronized milestones adapt to environmental changes at different rates, causing their reproductive, feeding, and/or migration patterns to become asynchronous
elevational gradients
Spatial gradients in elevation that capture variation in temperature, soil age and type, disturbance regimes, and land-use histories providing important insights into how organisms, communities, and e...
phenotypic plasticity
When a genotype produces different phenotypes under differing environmental conditions
species diversity
A measure of community diversity that accounts for both species richness and relative abundance, calculated using the Shannon-Weiner index
climate change effects on species interactions
The framework that climate affects species abundances and distributions both directly through physiological effects and indirectly through effects on multi-trophic species interactions
interspecific competition
Negative interactions between individuals of different species competing for limited resources
space use
Way in which individuals distribute themselves across landscape, including movement patterns and spatial organization like home range size and overlap
snow cover duration
Number of days from autumn snow onset to spring snowmelt, providing temperature stabilization and protection for overwintering organisms
reproductive success
Plant fitness measured through various components including fruit set, seed production, and seeds per plant
thermal performance
Temperature-dependent physiological and behavioral responses that affect organism fitness and population dynamics
mutualistic relationships
Mutually beneficial herbivore-predator associations where sap-feeding insects provide honeydew food for ants in exchange for protection against predators
early-life trade-offs
The concept that organisms face competing demands for limited resources during development that create trade-offs between different fitness components
pollen limitation
Reduced seed set resulting from insufficient pollen receipt, particularly affecting females when hermaphrodite density and frequency increases
drought stress
Physiological stress experienced by plants due to reduced water availability that can harm fitness by inducing leaf loss, reducing flower size, and decreasing seed production
climate-induced range shifts
Changes in species geographic distributions in response to changing climate conditions, typically involving movement to higher elevations or latitudes
frequency-dependent selection
Selection where individual fitness depends on the local frequency rather than global frequency, creating population structure with groups varying in genetic and phenotypic composition
herbivory
Consumption of plant material by animals, measured as browse occurrence on host plants
trophic cascade
Indirect effects of predators on lower trophic levels mediated through changes in intermediate consumer behavior or abundance
nonconsumptive effects
Behavioral, physiological, and life-history changes that reduce the risk of predation but have associated energetic or fitness costs to prey individuals and populations
nutritional niche partitioning
The concept that co-occurring species occupy distinct positions in multidimensional nutrient space to minimize competition and facilitate coexistence
pollinator-mediated selection
Natural selection on floral traits that occurs through differential pollinator visitation and resulting differences in reproductive success
local adaptation
An evolutionary process in which a population evolves to become more suited to its local environment through natural selection, resulting in higher fitness in the home environment compared to individu...
heritability
The proportion of phenotypic variation in a trait that is due to genetic variation, estimated using parent-offspring regression methods
photosynthetic rate
The rate at which plants convert carbon dioxide and water into glucose using light energy, measured as gas exchange
pond hydroperiod
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...
climate change adaptation
The ability of organisms to adjust to changing climatic conditions through genetic, phenotypic, or behavioral changes
facilitative interactions
Positive species interactions such as nurse plant effects by cushion-forming species that increase reproductive success for neighboring plants
reciprocal transplant experiment
Experimental approach where organisms from different source populations are grown in different environments to test for local adaptation
facultative paedomorphosis
Alternative life history strategy where some individuals retain larval traits and become sexually mature in aquatic environment while others metamorphose to terrestrial adults
ecological speciation
The formation of new species involves divergence of phenotypes and development of reproductive isolation, where initial divergence results from divergent natural selection and reproductive isolation a...
maternal care
Parental behaviors including female-pup interactions, vigilance, and antipredator behaviors that influence offspring survival and development
temporal dynamics
Changes in ecological patterns and processes across different time scales
breeding ecology
The study of reproductive behaviors, nesting habitat selection, and breeding success in bird populations
climate change impacts
The effects of long-term warming on hydrological processes, including changes in snowpack dynamics, growing season length, and water demand by vegetation
oviposition host plant choice
The selection of specific plants by female insects for egg-laying that affects larval survival and development
phenotypic selection
The process by which traits influence fitness, measured through directional and quadratic selection differentials relating trait values to reproductive success
evolutionary rescue
A process by which adaptive evolutionary change occurs sufficiently rapidly to counteract a decline in population size under initially unfavorable conditions
keystone species
A species that has a disproportionately large effect on its environment relative to its abundance and whose presence/absence significantly affects ecosystem structure and function
glucosinolates
Secondary metabolites that mediate interactions with herbivores and pathogens in Brassicaceae
ecosystem engineering
The modification of environments by organisms in ways that influence resource availability for other species, exemplified by beaver dam construction creating pond habitats.
floral volatile organic compounds
Chemical compounds emitted by flowers that contribute to floral scent and can influence pollinator attraction and plant-herbivore interactions
gene flow
Movement of genes between populations through migration and reproduction
frost damage
Direct damage to plant buds and flowers from freezing temperatures occurring during vulnerable developmental stages
nesting preferences
The selective choices made by organisms regarding where to construct nests, influenced by environmental factors that affect offspring survival and reproductive success.
community composition
The identity and relative abundance of species within an ecological community
hybridization
Interbreeding between taxa that alters the pool of genetic variation available for population responses to changing environments
phylogenetic signal
The tendency for related species to resemble each other more than expected by chance, measured by Blomberg's K and Pagel's lambda
balancing selection
Selection that maintains multiple alleles in a population at frequencies above those expected from mutation alone
cannibalism
Predation behavior where individuals consume members of their own species, particularly common in A. m. nebulosum populations targeting first year hatchlings
self-pollination
Reproduction in which pollen from a flower fertilizes ovules in the same flower or on the same plant