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Ecosystem Review

Review of Ecosystems and succession

Community is when many different species live together in a habitat
Ecosystem a community including the physical aspects of its habitat (soil, water, weather)
Biotic factors are organisms in a habitat
Abiotic factors are the physical aspects of a habitat
Producers organisms that first capture energy by photosynthesis (autotrophs)
Consumers all other organisms that consume plants or other organisms to obtain energy (heterotrophs)
Decomposers they eat the remains of dead plants and animals and create biomass.
Trophic levels
Food chain is the path of energy that travels through the trophic levels of an ecosystem
Food web is an interconnected group of food chains
Competition the struggle for resources (Animals: food, water, territory, mates) (Plants: light, minerals, water, space) in an ecosystem
Interspecific competition competition that occurs between members of different species.
Intraspecific competition competition that occurs between members of the same species.
Predation a relationship between two organisms in which one organism kills (predator) and devours another organism (prey).
Symbiosis a close long term relationship between two or more species that can be beneficial or harmful
Mutualism both organisms benefit from the relationship.
Parasitism the relationship between two organisms where one organism benefits (parasite) and the other is harmed (host).
Commensalism one organism benefits, the other organism is neither harmed or help
Succession the somewhat regular progression of species replacement
Primary succession when species begin to inhabit a place where life has not existed before
Secondary succession when species take over areas that have had previous growth
Pioneer Species
What does a food chain show? The transfer of energy from organism to organism
What is the main source of energy for everything? The sun
What percentage of energy is passed between organisms? 10%
What are abiotic factors in an ecosystem? The nonliving parts, sun, water, dirt, rocks, temperature, etc.
What are the biotic factors in an ecosystem? All of the living organisms in an ecosystem, animals, and plants
An organisms role in an environment is called a niche
What are the three ways an organism interacts with it’s ecosystem? competition, predation, and symbiosis
The struggle for natural resources in an ecosystem is called competition
What do plants compete for in an ecosystem? water, sun light, space, minerals
What do animals compete for in an ecosystem? food, water, territory, mates
As populations rises in an ecosystem, competition does what? rises
As Competition rises in an ecosystem, populations will decrease
An organism that hunts and kills another organism is called a predator
The organism that is hunted and killed is called the prey
What are the three forms of symbiosis? mutualism, parasitism, commensalism
Symbiosis between two organisms that benefits both organisms is called mutualism
Interaction between two organisms where one benefits and one just doesn’t care commensalism
Ecology the study of the interactions of living organisms with one another and with their physical environment
Habitat place where a particular population of species lives
Created by: tkhenry4