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Ecosystems 1.1

Biome- large area with similar climate conditions that determine plant & animal species there

Mutualism: relationship that benefits both organisms (coral reef)

Competition: organisms fighting over a resource like food or shelter; limits pop. size
Predation: one organism using another for energy
source (hunters, parasites, even herbivores)
Commensalism: relationship that benefits one organism & doesn’t impact the other (birds nest in trees)

Herbivores: (plant eaters) eat plants for energy (giraffe & tree)

True predators: (carnivores) kill and eat prey for energy (leopard & giraffe)

Parasites: use a host organism for energy, often without killing the host & often living inside host Ex: mosquitoes, tapeworms, sea lamprey
Parasitoids: lay eggs inside a host organism; eggs hatch & larvae eat host for energy Ex: parasitic wasps, bot fly

Symbiosis- any close and long term interaction between two organisms of different species.
Mutualism: Organisms of diff. species living close together in a way that benefits both

Resource partitioning: different species using the same resource in diff. ways to reduce competition
Competition: Reduces pop. size since there are fewer resources available & fewer organisms can survive
Temporal partitioning: using resource @ different times, such as wolves & coyotes hunting @different times (night vs. day)
Spatial partitioning: using diff. areas of a shared habitat (diff. length roots)
Morphological partitioning: using diff. resources based on diff. evolved body features


Ecosystems 1.1

Biome- large area with similar climate conditions that determine plant & animal species there

Mutualism: relationship that benefits both organisms (coral reef)

Competition: organisms fighting over a resource like food or shelter; limits pop. size
Predation: one organism using another for energy
source (hunters, parasites, even herbivores)
Commensalism: relationship that benefits one organism & doesn’t impact the other (birds nest in trees)

Herbivores: (plant eaters) eat plants for energy (giraffe & tree)

True predators: (carnivores) kill and eat prey for energy (leopard & giraffe)

Parasites: use a host organism for energy, often without killing the host & often living inside host Ex: mosquitoes, tapeworms, sea lamprey
Parasitoids: lay eggs inside a host organism; eggs hatch & larvae eat host for energy Ex: parasitic wasps, bot fly

Symbiosis- any close and long term interaction between two organisms of different species.
Mutualism: Organisms of diff. species living close together in a way that benefits both

Resource partitioning: different species using the same resource in diff. ways to reduce competition
Competition: Reduces pop. size since there are fewer resources available & fewer organisms can survive
Temporal partitioning: using resource @ different times, such as wolves & coyotes hunting @different times (night vs. day)
Spatial partitioning: using diff. areas of a shared habitat (diff. length roots)
Morphological partitioning: using diff. resources based on diff. evolved body features


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