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HomeHomework HelpbiologyMarine ecosystems

Marine ecosystems

Marine ecosystems are complex communities of organisms and their physical environment in oceanic and coastal waters, characterized by interactions among marine life, such as fish, invertebrates, and plants, as well as abiotic factors like salinity, temperature, and light. These ecosystems include various habitats, such as coral reefs, estuaries, and open oceans, each supporting diverse biological communities.

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Biology
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Overview

Marine ecosystems are crucial for the health of our planet, providing habitat for countless species and regulating climate. They include diverse environments such as coral reefs, estuaries, and the open ocean, each supporting unique forms of life. Understanding these ecosystems helps us appreciate t...

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Key Terms

Biodiversity
The variety of life in a particular habitat or ecosystem.

Example: Coral reefs have high biodiversity with many species of fish and corals.

Coral Reefs
Underwater structures made from calcium carbonate secreted by corals.

Example: The Great Barrier Reef is the largest coral reef system in the world.

Estuary
A coastal area where freshwater from rivers meets and mixes with saltwater from the ocean.

Example: The Chesapeake Bay is a well-known estuary.

Keystone Species
A species that has a disproportionately large effect on its environment relative to its abundance.

Example: Sea otters are a keystone species in kelp forest ecosystems.

Overfishing
Catching fish faster than they can reproduce, leading to population decline.

Example: Overfishing has severely impacted cod populations in the North Atlantic.

Pollution
The introduction of harmful substances into the environment.

Example: Plastic pollution is a major threat to marine life.

Related Topics

Oceanography
The study of the ocean's physical and biological properties and processes.
intermediate
Aquatic Biodiversity
The variety of life in aquatic environments, including freshwater and marine ecosystems.
intermediate
Climate Change Effects on Oceans
How climate change impacts marine ecosystems, including temperature rise and acidification.
advanced

Key Concepts

BiodiversityFood websHabitat zonesHuman impact