← Estuaries Test
5 Written Questions
5 Matching Questions
- Littoral Zone
- Nutrient Trap
- Salt Meadow
- Profundal Zone
- Tidal Creeks
- a Contain salt meadow cordgrass and spike grass. About 5 cm above mean high water mark.
- b Light reaches the bottom. Rooted plants grow here. Richest diversity of life.Shallow water has emergent vegetation such as rushes, sedges, reeds, and cattails.Deeper water has water lilies.
- c Form a series of drainage channels that carry tidal waters back out to sea.Contain mud algae (diatoms and dinoflagellates).
- d Very little life-some fish, some plankton, and organisms such as water fleas. Zooplankton may migrate during part of the day.Depends on rain of organic material from the limnetic zone for energy. Limited light penetration.
- e Formed by mixing water of different salinities and temperatures.
5 Multiple Choice Questions
- Contains black needlerush and black grass.
Contain shrubs such as marsh elder and goundsel.Upland fringe contains bayberry and sea holly.
- inland depressions containing standing water, may be so large that they mimic marine environments.
- Open water-extends to the depth of light penetration. Phyto and zooplankton and nekton.
- salt marsh cord grass
- inland depressions containing standing water, small bodies of water so shallow that rooted plants can grow over much of the bottom.
5 True/False Questions
Benthic Zone → Open water-extends to the depth of light penetration. Phyto and zooplankton and nekton.
Tidal Flats → When silt and mud accumulations become high enough to be exposed at low tide.Found in sheltered areas (i.e. estuaries)
Salinity → Formed when silt, driftwood, and other debris deposited in beds of slow-moving streams dam up water behind them.
High marsh → salt marsh hay grass, spike grass and short form of salt marsh cord grass
Fiddler Crabs → When silt and mud accumulations become high enough to be exposed at low tide.Found in sheltered areas (i.e. estuaries)