plant density effects
How plant population density affects individual plant growth, morphology, and susceptibility to herbivory through competition and resource availability
population decline
Reduction in population growth rates, size, or occurrence across species ranges
recruitment limitation
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
size at maturity
Body size when organisms transition from growth to reproduction, with important consequences for lifetime reproductive success
social embeddedness
The degree to which an individual is integrated in their group based on the number of independent links to others in the group
synchrony
The degree to which individuals in a population exhibit coordinated timing of nesting activity
Microclimate Selection Hypothesis
Females should choose nesting sites that best protect them and their offspring from severe or unpredictable weather events, such as extreme temperatures or high wind
abundance
basal area
boldness
Individual's reaction to a non-novel, risky situation
colony establishment
Initial colonization phase when winged aphids establish new colonies on host plants
distribution
emergence weight
herkogamy
hibernation ecology
Winter survival strategy of some small mammals that may affect their vulnerability to avalanche disturbance depending on burrow depth and emergence timing
ideal free distribution
Theory that animals distribute themselves among habitat patches in proportion to resource availability, with high-quality patches becoming occupied first and animals moving to lower-quality patches as...
infection prevalence
infection prevalence
Proportion of individuals in a population showing signs of pathogen infection
larval food stress
Nutritional limitation during larval development that affects adult phenotype
neophobia
An aversion to novel stimuli, measured as latency to touch the puzzle box from stepping onto the platform
nest density
Number of nests per unit area, calculated by dividing number of nests in each habitat by total area
pathogen transmission
Spread of disease between individuals through various mechanisms including spore dispersal
range expansion
root turnover
social transmission
Transmission of parasites among individuals within social mammalian groups
source-sink dynamics
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)
Hardy-Weinberg equilibrium
A principle stating that allele and genotype frequencies remain constant in a population under certain conditions
age at sexual maturity
agonistic interactions
bloom formation
clonal reproduction
Vegetative reproduction producing genetically identical individuals, characteristic of quaking aspen forming cohesive clones with limited spatial interdigitation
defence polymorphism
Genetic variation in defensive traits maintained within populations
demographic buffering hypothesis
Hypothesis that populations may be buffered from adverse climatic effects when vital rates with high impacts on population growth exhibit the least temporal variability
epidemic dynamics
The temporal progression and patterns of disease spread through host populations
fixation indices
F-statistics (FIS, FST, FIT) measuring genetic differentiation and inbreeding at different hierarchical levels
floral scent
group size effects
Changes in social behavior and group dynamics that result from variation in the number of individuals in a social group
heterozygote deficiency
Lower than expected frequency of heterozygous genotypes in a population
inbreeding coefficient
Measure of the level of inbreeding within a population, with values close to 1.0 indicating high levels of inbreeding
juvenile fitness
Measures of early-life performance that may predict later survival and reproductive success
leaf number
litter sex composition
The proportion of male versus female offspring in a litter affecting prenatal hormone exposure
male-biased dispersal
Pattern where male mammals tend to travel farther than females in exploratory excursions and disperse more than females
mass gain
Proportional increase in body mass during the active growing season, calculated as August 15 body mass divided by June 1 body mass
multipredator hypothesis
Assumes that antipredator adaptations evolve together and thus prey may respond to extinct predators as long as they have experience with other predators.
nesting traits
Life history characteristics related to where and how bees construct their nests, categorized as above-ground or below-ground
optimal outcrossing distance
Distance range that maximizes pollen fertilization success and offspring survival
positive feedback loop
Mechanism where state and behavior mutually reinforce each other, measured as positive correlation between individual intercept and slope in random regression models.
post-fire recovery period
Period required for sagebrush to recover to pre-fire conditions after burning
resource allocation
The distribution of limited resources among competing physiological functions such as growth, reproduction, and defense
