Water Ecosystems Lecture Notes.docx - Water Ecosystems...

This preview shows page 1 - 3 out of 5 pages.

Water EcosystemsDeterminants of Aquatic Life:Water TemperatureDissolved OxygenAvailability of FoodLight and Nutrients for photosynthesisClicker Question: What percentage of earth’s surface is covered by Marine ecosystem? D. 71% of earth’s surface*The remaining percent is freshwater*Aquatic System:1.Marine: 71% of earth’s surface2.3% of earth’s surfaceMarine Ecosytem: A.Estuarya.Brackish water: a mix of salt and freshwaterb.Partly enclosedc.One or more rivers emptyinto the ocean hered.Connected to open see**Where rivers meet the sea**B.Intertidal Zonea.Area between high and lowtide.b.Provides a diverse habitat c.Spray zone-dryd.Low tide zone-wetC.Coastal Zonea.Shallow: near the coast sothe water is shallow
b.Warm water: since the water is shallow, the sun warms itc.Nutrient rich: nutrients come from both land, where they are washed into the coastal areas and from the deep oceand.BIODIVERSITY IN THE COASTAL ZONES:i.Coastal Wetlands1.Within coastal watersheds2.40 million acres, 38% of all wetlands3.81% are in the Southeast (includes salt marshes and mangrove swamps)ii.Sea Grass Beds1.Habitat for fish and invertebrates2.40,000 fish in an acre3.Indicator Species: organism that reflects the changes in the environmentiii.Coral Reefs1.Many mutualisms between organisms (BIG HABITAT)2.Occur in shallow water3.Sensitive to temperature and nutrient inputs4.Economically beneficial due to tourismCoral Bleaching: Losing color in coral reefs due to stressEnvironmental stressors such as increases in temperature and an increase in nutrient inputscancause coral bleachingClicker Question: Which of the following is the definition of watershed?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture