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There are 2 types:Freshwater – Life in lakes, ponds, rivers, streams, and
wetlandsMarine – Life in the ocean
What makes up an ecosystem?Ecosystem – all the living and nonliving parts of an
environment
What determines the health of an ecosystem?Biotic factors – the living parts of an ecosystemAbiotic – the nonliving parts of an ecosystem
NOTES:Aquatic Ecosystems:
Freshwater ecosystems are dependent on:Running water, temperature, light availability and
vegetation
Importance of “Running” water:Better able to dissolve oxygen and nutrients than standing
water
NOTES:
Watch video:http://www.neok12.com/php/watch.php?v=zX466d047304046105745367&t=Ecosystems
Freshwater Ecosystems:
Primary producers:Algae and plants, such as the cattails
Primary consumers:Zooplankton and macroinvertebrates
Secondary consumers:Fish (such as, trout), insects (such as,
dragonflies), and frogs or lizards
NOTES:Freshwater Food Chain:
Wetlands:Watch video:
http://www.neok12.com/php/watch.php?v=zX03547a4151505c53040173&t=Ecosystems
WETLANDSWetlands – an area that is saturated with water or covered
by water for at least one season of the year.
Wetlands are extremely important for several reasons:Store excess water from floodsSlow down runoff and help prevent erosionRemove excess nutrients from runoff Provide a unique habitat for water plants Provide a safe, lush habitat for animals
NOTES:
Marine ecosystems:Largest aquatic ecosystemsInclude oceans, lagoons, coral reefs…Support a large amount of biodiversity
Marine ecosystems are dependent on:Light, temperature, salinity, density,landscape, availability of food, and water movement
NOTES:Marine Ecosystems:
Primary producers:Phytonplanton, seaweed/seagrass
Primary consumers:Zooplankton, jelly fish …
Secondary + consumers:Larger fish, octopus, squid Sharks, dolphins Albatross (bird)
NOTES:Freshwater Food Chain:
Abiotic vs. Biotic FactorsAn ECOSYSTEM is an interacting system of plants, animals,
humans and the surrounding environment. An ecosystem contains living (biotic) and non-living (abiotic) things that
contribute to the functioning of other organisms. An ecosystem is NOT just a collection of organisms. It is a system of
interactions and interrelationships.
Both Abiotic and Biotic factors affect Ecosystems
Differences in abiotic factors in ecosystems lead to differences in the living things there. Factors such as sunlight and precipitation
affect how organisms adapt to these ecosystems.
NOTES: