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Major Ecosystems of the World Part 2

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Presentation on theme: "Major Ecosystems of the World Part 2"— Presentation transcript:

1 Major Ecosystems of the World Part 2
Chapter 6 Major Ecosystems of the World Part 2

2 Aquatic Ecosystems Freshwater Ecosystems Rivers and Streams
Tend to be narrow, swift, clear, cold, nutrient poor, and highly oxygenated Tend to be wide, slow, cloudy, warm, nutrient rich, and less oxygenated

3 Aquatic Ecosystems Freshwater Ecosystems Lakes and Ponds
Photosynthetically productive; large fish Highly productive, high species richness

4 Aquatic Ecosystems Freshwater Ecosystems Lakes and Ponds
Not always present; anaerobic, dominated by decomposers

5 Aquatic Ecosystems Freshwater Ecosystems
Thermal stratification in temperate lakes

6 Aquatic Ecosystems Freshwater Ecosystems Turnover in temperate lakes

7 Aquatic Ecosystems Freshwater Ecosystems Marshes and Swamps
Highly productive Nutrient rich due to slow decomposition Remove many pollutants

8 Aquatic Ecosystems Estuaries: Where freshwater and saltwater meet.
Highly variable environment (salinity, temperature, light penetration rapidly changes). Many fishes and shellfish spend larval stages here.

9 Aquatic Ecosystems Estuaries Two general types: 1) Salt marshes
2) Mangrove forests

10 Aquatic Ecosystems Case-in-Point: The Chesapeake Bay

11 Aquatic Ecosystems Marine Ecosystems

12 Aquatic Ecosystems Marine Ecosystems Intertidal Zone

13 Aquatic Ecosystems Marine Ecosystems Benthic Environment
Photic benthic environments include: 1) Sea grasses

14 Aquatic Ecosystems Marine Ecosystems Benthic Environment
Photic benthic environments include: 1) Sea grasses 2) Kelp forests

15 Aquatic Ecosystems Marine Ecosystems Benthic Environment
Photic benthic environments include: 1) Sea grasses 2) Kelp forests 3) Coral reefs

16 Aquatic Ecosystems Types of Coral Reefs (a) Fringing reef

17 Aquatic Ecosystems Types of Coral Reefs (b) Atoll

18 Aquatic Ecosystems Types of Coral Reefs (c) Barrier reef

19 Aquatic Ecosystems Human Impacts on Coral Reefs
Sedimentation / siltation Pollution Overfishing Direct disturbance (anchor dragging, divers damaging / collecting specimens)

20 Aquatic Ecosystems Marine Ecosystems The Neritic Province
Dominated by floating and swimming organisms. Such as many large fishes, sea jellies, various plankton.

21 Aquatic Ecosystems Marine Ecosystems The Oceanic Province
Largest area of ocean Least explored area

22 Aquatic Ecosystems Human Impacts on the Ocean

23 Aquatic Ecosystems Human Impacts on the Ocean

24 Interaction of Life Zones
Case-in-Point: The Everglades


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