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12 Cards in this Set
- Front
- Back
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Components of streams |
The Watershed, the visible water course, riparian Zone, floodplain, Hyperbaric |
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Watersheds or catchment |
Are hierarchical as small streams feed into larger streams feed into rivers feed into larger Rivers feed into the ocean |
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Headwater streams |
Limited light riparian dominated, Alec clunes and put leaves in material from riparian, detrital food base microglial film, low biological diversity shredders |
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Mid reaches |
Autochrhonous input. Light allows photosynthesis role of riparian shift to channel structure. High biological diversity, scrapers and grazers and Gathers |
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Lower reaches |
Riparian less important, Channel and floodplain structure. Allochthonous input, leakage from Upstream phytoplankton period lower biological diversity |
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Riparian Zone |
Vegetated Fringe, Eco tunnel between Aquatic and terrestrial usually considered forested. Continuous with floodplain land use change is often Stark going from riparian to agriculture to Urban to clear-cut. Forestry regulations require riparian buffer along streams |
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Role of riparian Zone |
Biofiltration, surface runoff, pollution, sediment, nutrients. Channel stability, in-stream structure large Woody debris fries, and Stream Energy such as leaves |
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Floods are energy for Habitat formation |
Normal slides create in Channel habitats 2 year flood, episodic a hundred year flood shaped valleys. Floods have role of fire in terrestrial ecosystems |
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Hyporheic zone |
Continuous subsurface extension of streams, lateral and longitudinal Dimensions, active exchange of water and nutrients and temperature, can extend kilometers back from Main Channel, distinct baiada, salmon spawning |
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Hyporheic is the source of stream base flow |
Extend stream into subsurface of stream and floodplain includes floodplains gravel bars in streambed |
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Function of hyporheic zone |
Supply base flow, nutrient processing, carbon cycling and nitrogen, temperature moderation, biological community |
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Urban hyporheic issues |
Adversely affected by urbanization. Impervious surfaces restrict groundwater recharge. Groundwater pumping depletes hyperallergic. Contamination and pollution. Opportunities, stormwater control, stormwater injection and nutrient control |
