2 NOTES: Aquatic Ecosystems: There are 2 types:Freshwater – Life in lakes, ponds, rivers, streams, and wetlandsMarine – Life in the oceanWhat makes up an ecosystem?Ecosystem – all the living and nonliving parts of an environmentWhat determines the health of an ecosystem?Biotic factors – the living parts of an ecosystemAbiotic – the nonliving parts of an ecosystem
3 Freshwater Ecosystems: NOTES:Freshwater Ecosystems:Watch video:Freshwater ecosystems are dependent on:Running water, temperature, light availability and vegetationImportance of “Running” water:Better able to dissolve oxygen and nutrients than standing water
4 Freshwater Food Chain: NOTES:Freshwater Food Chain:Primary producers:Algae and plants, such as the cattailsPrimary consumers:Zooplankton and macroinvertebratesSecondary consumers:Fish (such as, trout), insects (such as, dragonflies), and frogs or lizards
5 Wetlands: NOTES: Watch video: WETLANDS 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 runoffProvide a unique habitat for water plantsProvide a safe, lush habitat for animals
6 NOTES: Marine Ecosystems: Marine ecosystems: Largest aquatic ecosystemsInclude oceans, lagoons, coralreefs…Support a large amount ofbiodiversityMarine ecosystems are dependent on:Light, temperature, salinity, density,landscape, availability of food, and water movement
8 Abiotic vs. Biotic Factors NOTES: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 EcosystemsDifferences 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.
9 Create a Venn Diagram ----- Create a List Use the following list to create a Venn diagram that compares abiotic vs biotic factors.Come up with a list of types of abiotic influences could harm Utah’s waters.Come up with a list of types of biotic influences could harm Utah’s waters.