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AP Bio tri1

Ap biology trimester one ecology

QuestionAnswer
Habitat Where it lives
Biotic Living things, All other organisms- animals, plants, microorganisms
Abiotic Nonliving factors, light, weather, temperature, water, rocks, soil
Niche Organisms job within the environment
Primary productivity amount of light energy converted to chemical energy; due to photosynthesis Total primary production in ecosystem
Net or gross productivity energy used during RESPIRATION
Dominate species Most abundant species or highest biomass (total weight) in community
Keystone species species that has disproportionate effect on ecosystem relative to its abundance Ex: Sea otters in kelp forests
Detrivores scavenge/eat dead organisms
Demography Study of population statistics.
TYPE I low death rates in early/midlife; sharp death rate in old age
TYPE II constant death rate over life span
TYPE III Very high early death rate; few surviving to old age
COMPETITIVE EXCLUSION PRINCIPAL no two species can share same niche One with reproductive advantage will eliminate the other
PREDATION hunt & kill each other for food (predator/prey) (+/-)
BATESIAN MIMICRY harmless species mimics dangerous one
MULLERIAN MIMICRY two harmful/distasteful species look alike EX: bees and wasps; Viceroy/Monarch butterflies (originally thought Batesian)
SYMBOSIS different organisms live on, in, or near another
Mutualism both benefit (+/+) (flower & bee)
INTERSPECIFIC COMPETITION (-/-) Species compete for available resources
DENSITY DEPENDENT POPULATIONS stabilize near carrying capacity
FIXED ACTION PATTERN once start must complete action
ALTRUISTIC behavior (leads to KIN SELECTION) Behavior favors reproductive success of relatives, even at a cost to own survival and/or reproduction EX: warning call may get you eaten but family survives
Created by: 19farmgirl
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