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Ecosystems Vocabulary

Explore the fundamental concepts of ecosystems, including the population dynamics of species, sampling methods, and the distinction between abiotic (nonliving) and biotic (living) factors. Learn about trophic levels, the roles of producers, consumers, herbivores, carnivores, omnivores, and decomposers in food chains and food webs. Understand symbiotic relationships such as commensalism, mutualism, and parasitism. This concise guide provides a comprehensive overview of ecological vocabulary essential for studying environmental interactions.

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Ecosystems Vocabulary

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  1. Ecosystems Vocabulary

  2. Population • A grouping of the same species in a certain area

  3. Sampling • Using general characteristics of a small group to identify characteristics of a larger group

  4. Abiotic and Biotic • Abiotic: Nonliving things or factors that can affect living organisms – temperature, rain, oceans… • Biotic: Living organisms or factors – plants, animals

  5. Dichotomous Key • A key used to identify a species by its traits

  6. Trophic Level • A level at which a species feeds

  7. Autotrophs and Heterotrophs • Autotrophs: Species that make or produce their own food – plants, algae • Heterotrophs: Organisms that feed at multiple trophic levels– animals, fungi Oh my gosh I’m a heterotroph!

  8. Producers and Consumers • Producers: The organisms that provide energy to an ecosystem • Consumers: Organisms that consume energy from other organisms

  9. Herbivore, Carnivore and Omnivore • Herbivores: Organisms that only eat plants • Carnivores: Organisms that only eat meat • Omnivores: Organisms that eat meats and plants

  10. Decomposers • Organisms responsible for returning nutrients to the ecosystem – bacteria, fungi, mold

  11. Food Chain • Display of specific energy transfers between organisms

  12. Food Web • Shows all the possible food chains in an ecosystem

  13. Symbiosis • Relationship between two organisms

  14. Commensalism, Mutualism, and Parasitism • Commensalism: Form of symbiosis where one organism benefits and the other is neither benefited or harmed • Mutualism: Both organisms benefit • Parasitism: One organism benefits and the other is harmed

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