Biology AKS Ecology Review

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Biology AKS Ecology Review

Abiotic

non-living factors effecting an ecosystem Ex- amt. light, water, temp., % chemicals, wind, current, soil type, etc.

Autotrophs

producers, make own food from sun/chemical energy source

Biome

geographic area w/ same climate and life

Biosphere

all life existing within several meters of earth's surface

Biotic

living interactions between organisms of an ecosystem Ex- competition, predation, symbiosis

Biotic potential

max rate of population increase, no limiting factors

Carrying capacity

max number of org. supported by a particular environment, limiting factors

Commensalism

one organism benefits while the other is unaffected. Ex- remora (gets food), shark (feeds normally)

Community

all living things in a certain area & time (different species)

Density Dependent

effects population in different ways depending on size. Ex: predation, competition, migration, disease

Density Independent

effects population regardless of size. Ex: natural diasters

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

Desert

Biome Climate - Dry, extreme temperatures

Ecosystem

distinct area consisting of both biotic and abiotic factors

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

Grassland

Biome Climate- Warm, seasonal rain, frequent fires

Habitat

area where a particular organism lives

Heterotrophs

consumers, obtain food from another organism

Interspecific competition

between different species

Intraspecific competition

between same species

J curve- population

population growing exponentially, no limiting factors, reaching biotic potential Ex: human population

Limiting factors

resource that has a finite amount, Ex: food, water, space, predators, etc.

Mutualism

both organisms benefit. Ex- bird/insect (gets food), plant (pollination)

Niche

organisms role in a particular habitat, prevents competition

Ocean

Biome Main Characteristics - Largest biome (75%); pollution, over fishing

Ocean

Biome Plant/animal life - Phytoplankton, algae/ Wide variety of fish: swordfish, marine mammals, dolphins, whales

Ocean

Biome Climate - Varies by depth and location

Parasitism

one organism benefits while another is harmed. Ex- dog (loses blood), flea (gets food)

Population

species of organism in a certain area & time

S curve- population

population growing logistically, limiting factors cause population to reach carrying capacity

Temperate Forest

Biome Climate - Cold winters, warm summers, year round precipitation

Temperate Forest

Biome Main Characteristics - Drought; forest fires, our biome

Temperate Forest

Biome Plant/animal Life - Deciduous trees, some conifers, flowering shrubs, mosses and ferns/ Deer, bear, squirrels, raccoons, skunks, turkeys

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

Tundra

Biome Climate - Short, soggy summers, long cold winters; very windy

Tundra

Biome Main Characteristics - permafrost, shallow roots

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

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