Habitat Flashcards
(30 cards)
dispersal
what species are not in a particular place
r selected
high reproductive rates, rapid development and great powers of dispersal, live in unstable environments
K selected
low reproductive rates, single births with lots of care, live in stable environments
species absent because of
dispersal (locomotive), behavior (psychic), other species (biotic), physical or chemical factors (abiotic)
competitive exclusion
probiotics, overrun bad bacteria with good bacteria
dispersal from place of birth
inbreeding avoidance hypothesis, intraspecific competition hypothesis, optimal inbreeding
inbreeding avoidance hypothesis
inbreeding depression
intraspecific competition hypothesis
mate competition, food competition, avoid lowering indirect fitness
optimal inbreeding
outbreeding depression, beneficial recessive trait, retain optimal traits
determinants of habitat preference
heredity, learning and early experience, tradition
learning and early experience
habitat imprinting (iteroparous, semelparous)
iteroparous
young spread out (single birth or twins)
semelparous
young all at once (litter bearing)
tradition
habitat is passed from generation to generation
stress
any environmental situation, can be chronic or acute
stressor
any environmental factor that provokes an adaptive response
strain
any functional, structural, or behavioral reaction to an environmental stimulus or perceived stimulus
eustress
a positive stressor: growth, gravity
distress
a negative stressor: temperature, humidity, air movement, light, noise, air quality, food, social surroundings, perception
general adaptation syndrome
all systemic stressors resulted in alterations to the adrenal gland and its secretions
three basic stages of the general adaptation syndrome
alarm response, resistance, exhaustion
adaptation
any functional, structural, or behavioral trait that favors survival or ability to be productive in a given environment
acclimation
compensatory alterations due to a single stressor acting alone over days or weeks
acclimization
reactions over many days or weeks to many environmental factors