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Mbio Module 10
| Question | Answer |
|---|---|
| Estuary | A semi-enclosed area at the mouth of a river where fresh water and sea water meet and mix |
| Euryhaline | Species that can tolerate a wide range of salinities |
| Stenohaline | Species that can tolerate a narrow range of salinities |
| Brackish | Water that is less salty than seawater but saltier than fresh water |
| Wetlands | Estuarine are of high elevation that are periodically covered with water |
| Mudflats | Wide expanses of an estuary that are exposed during low tide |
| Meiofauna | Microscopic organisms living in between marine sediment particles |
| Channels | Estuarine area where water is present both during high and low tides |
| Glaciers | Moving sheets of ice |
| Glacial deposits | Deposits of gravel, dirt and debris left by glaciers |
| Uniformitarians | Believe there were many ice ages, and each took a long time |
| Catastrophists | Believe there was one major ice age, made quickly by Noah's Flood |
| Drowned river valleys/coastal plain estuaries | Common, broad and shallow |
| Bar-built estuary | Built by a sand bar |
| Barrier island | Large sand bar |
| Fjords | Deep valleys cut by glaciers and then filled with water |
| River delta | The end of a river that erodes the bank on either side |
| Tectonic estuary | Formed by movement in the earth's crust that filled with water |
| Salt wedge | A diagonal delineation of salinities |
| Tidal currents | Rapid inflow and outflow of water |
| Mudflats | Area of lower elevation in an estuarine community |
| Salt marshes | Wet, grassy area in a temperate wetland |
| Red mangrove | common species in North America, very tolerant of salt |
| Black mangrove | Less tolerant of salt water than red |
| Prop roots | Curved roots of the red mangrove that enable it to grow above the water |
| Pneumatophores | Black mangroves' pencil-thin root extensions that grow out of the soil to allow more exposure to oxygen |
| White mangrove | Leas tolerant of salt than red or black mangroves, gets rid of salt by excreting it through salt glands |
| Red mangroves called... | "island makers" |