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41 terms

Biology AKS Ecology Review

Biology AKS Ecology Review
STUDY
PLAY
Habitat
area where a particular organism lives
Biosphere
all life existing within several meters of earth's surface
Community
all living things in a certain area & time (different species)
Biotic potential
max rate of population increase, no limiting factors
Carrying capacity
max number of org. supported by a particular environment, limiting factors
Biome
geographic area w/ same climate and life
Population
species of organism in a certain area & time
Autotrophs
producers, make own food from sun/chemical energy source
Limiting factors
resource that has a finite amount, Ex: food, water, space, predators, etc.
Ecosystem
distinct area consisting of both biotic and abiotic factors
Niche
organisms role in a particular habitat, prevents competition
Heterotrophs
consumers, obtain food from another organism
Intraspecific competition
between same species
Interspecific competition
between different species
Mutualism
both organisms benefit. Ex- bird/insect (gets food), plant (pollination)
Parasitism
one organism benefits while another is harmed. Ex- dog (loses blood), flea (gets food)
Commensalism
one organism benefits while the other is unaffected. Ex- remora (gets food), shark (feeds normally)
Density Independent
effects population regardless of size. Ex: natural diasters
Density Dependent
effects population in different ways depending on size. Ex: predation, competition, migration, disease
J curve- population
population growing exponentially, no limiting factors, reaching biotic potential Ex: human population
S curve- population
population growing logistically, limiting factors cause population to reach carrying capacity
Abiotic
non-living factors effecting an ecosystem Ex- amt. light, water, temp., % chemicals, wind, current, soil type, etc.
Biotic
living interactions between organisms of an ecosystem Ex- competition, predation, symbiosis
Tundra
Biome Climate - Short, soggy summers, long cold winters; very windy
Tundra
Biome Plant/animal Life - Mosses, lichens, sedges and short grasses; dwarf trees/ Migratory water fowl, shore birds, ox, foxes, caribou, lemmings, salmon, mosquitoes, flies
Tundra
Biome Main Characteristics - permafrost, shallow roots
Temperate Forest
Biome Climate - Cold winters, warm summers, year round precipitation
Temperate Forest
Biome Plant/animal Life - Deciduous trees, some conifers, flowering shrubs, mosses and ferns/ Deer, bear, squirrels, raccoons, skunks, turkeys
Temperate Forest
Biome Main Characteristics - Drought; forest fires, our biome
Tropical Rain Forest
Biome Climate - Hot and Wet, Consistently warm and rainy year round
Tropical Rain Forest
Biome Plant/animal Life - Broad leafed evergreen trees, ferns, woody vines, climbing plants, orchids, bromeliads/ jaquar, sloths, toucan, insects, fish, reptiles, poison dart frog
Tropical Rain Forest
Biome Main Characteristics -Canopy, most biodiversity, deforestation, source of medicines
Grassland
Biome Climate- Warm, seasonal rain, frequent fires
Grassland
Biome Plant/animal Life - Tall grasses, drought tolerant trees or shrubs/ lions, cheetahs, zebras, prairie dogs, buffalo, birds and insects
Grassland
Biome Main Characteristics - Cover of grasses; compact soil, forest fires, very fertile soil
Desert
Biome Climate - Dry, extreme temperatures
Desert
Biome Plant/animal life - Cactus, short life cycle plants, Creosote bush/ Reptiles, Predators: foxes, bobcats; herbivores: deer, antelope, sheep; birds and insects
Desert
Biome Main Characteristics - Annual precip. less than 25 cm; 1/5 of earth's surface
Ocean
Biome Climate - Varies by depth and location
Ocean
Biome Plant/animal life - Phytoplankton, algae/ Wide variety of fish: swordfish, marine mammals, dolphins, whales
Ocean
Biome Main Characteristics - Largest biome (75%); pollution, over fishing