Chapter 6
Aquatic Ecosystems
Aquatic Ecosystems Differ from terrestrial ecosystems Salinity a major factor (Fresh water vs. salt water) Three major groups of aquatic organisms- - 1. Plankton (Microscopic, carried by current)
- a. Zooplankton = Protozoans (animals)
- b. Phytoplankton = Photosynthetic
- 2. Nekton- Large, swimming organisms (fish, turtles, etc.)
- 3. Benthos- Bottom dwelling organisms/Sessile and mobile
Plankton, nekton or benthic?
Freshwater Ecosystems Flowing-water ecosystems change greatly between the source (start) and the mouth (end).
Source headwater tributaries flood plain meanders Estuary (Salt marsh) mouth delta ADK’s to NYC: Lake Tear of the Clouds …Albany…Newburg… NYC mouth (delta) …Atlantic ocean
Mount Marcy- Elevation 5344 ft.
Estuaries Where “rivers meet the sea” Very productive ecosystems!
Coral Reefs
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