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13 Cards in this Set
- Front
- Back
- 3rd side (hint)
Some Salient features of wetlands |
Shallow water or saturated soil degree of accumulated organic matter Hydric soils presence of organisms adapted to tolerate saturated conditions absence of flood-tolerant organisms |
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What two aspects of hydrology determine the 4 types of wetlands? (Brinson 1993) |
Depth of Flooding Duration of flooding |
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Wetlands are transitional zones between aquatic and terrestrial features. This is sometimes called an ___________ |
Ecotone |
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What are some plant adaptations for a wetland environment? |
Aerenchyma cells (water hyacinth) Flotation (Giant lily pads) Stilt roots Carnivory |
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Why worry about wetlands? |
Biodiversity Flood attenuation water quality nutrient cycling raw materials (for housing) food (cranberries) |
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Biogeochecmial Cycling |
Carbon sinks Nitrogen cycling pollutant Transformation Sediment capture (some) |
Nutrient cycling (sources/ sinks/transformations) |
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What is productivity? (How is it measured?) |
Amount of biomass |
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What are the 4 principal drivers of wetland distribution and variability? |
Climate landscape setting water source hydroperiod They are all interrelated |
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Sources of water input for Wetlands |
Groundwater (Fens) Surface water Precipitation |
Can be combinations of the 3 |
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What is subsurface flow? |
lateral movement of water |
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Problems with defining wetlands? |
1) variability in landscape context 2) variability in hydrology (spatially & temporally) 3) variation in vegetation (temporal variability/ fidelity of wetland organisms) 4)wetland sin transitional areas (ecotones) 5)Humans (modifications and obscurantism) |
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Hydrophyte |
plant species that is adapted to wet conditions |
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hydric soils |
soils that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part |
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