Presentation on theme: "Do Now: What happens to water when salt and fresh water mix?"— Presentation transcript:
1 Do Now: What happens to water when salt and fresh water mix?
2 Aim: What type of biomes form when fresh and salt water mix?
3 EstuaryWhere the “arm” of a sea extends inland to meet the mouth of a riverSea water moves inward mixing with fresh river water resulting in brackish waterHigh in nutrients and sedimentsShallow water, high sunlightRich in both plant and animal lifeCommercially important marine life use estuaries as a nursery for their eggsTypes: Salt water marsh, Mangrove forest, Inlets, & Bays
7 Mangrove Forest Trees that grow in saline water in the tropics. Characterized by deposition of fine sediment that protects the area from high energy wave action.Can tolerate brackish water-pure salt water.
9 Wetlands Among the most diverse ecosystems Area saturated with water permanently or seasonallyFound along the shores of fresh bodies of waterTypes:MarshesSwampsBogsPrairies potholes (seasonal)Flood plains (occur when excess water flows out of the banks of river into a flat valley)
11 Saltwater Ecosystem: Barrier islands Important source of biodiversityLand form off coastal shores created by the build up of deposited sedimentsBoundaries are constantly shifting as water moves around themImportant buffer for the shoreline behind them when offshore storms hit
12 How did the barrier island protect NJ during Hurricane Sandy?
14 Tropical Waters Barrier Island: Coral Reef Formed by cnidarians that secrete a hard, calciferous (calcium carbonate) shell skeletonproviding homes for a diversity of marine life speciesNot formed by depositing of sedimentVulnerable to physical stresses, change of light intensity, and water temperature
15 FW & SW UpwellingSeasonal movement water from the cold, nutrient rich bottom to the surfaceProvides nutrients to organisms living in the photic zone causing exponential growth
16 Red Tide Formation After upwellings, fisheries boom Organisms like single-celled algae grow exponentiallyAlgal blooms can lead to red tideDeadly toxins released into water from dinoflagellate wastesResult massive fish and marine life die off
17 Sumary Choose 1 of the following: Explain how the atmosphere effects the hydrosphere.Compare & contrast sea water salinity to fresh water salinity.Create a story about the life of a river starring you as a drop of rain.Explain vertical stratification in fresh water biomes.