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FUNCTIONALITY of LENTIC SYSTEMS

Learn how lentic standing water systems like lakes, ponds, seeps, and meadows support biodiversity through proper functionality. Discover the essential components for erosion reduction, floodplain development, and aquatic life support in these habitats.

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FUNCTIONALITY of LENTIC SYSTEMS

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  1. FUNCTIONALITY of LENTIC SYSTEMS

  2. LENTICSTANDING WATER HABITAT SUCH AS LAKES, PONDS, SEEPS, BOGS and MEADOWS

  3. Lentic PFC definition • “Lentic riparian-wetland areas function properly when adequate Vegetation, Landform or large Woody Debris is present to: • Dissipate energies associated with wind action, wave action, and overland flow from adjacent sites, thereby reducing erosion and improving water quality

  4. Lentic PFC definition • Filter sediment and aid floodplain development • Improve flood-water retention and ground water recharge, • Develop root masses that stabilize islands and shoreline features against cutting action. • Restrict water percolation

  5. Lentic PFC definition • Develop diverse ponding characteristics to provide the habitat and the water depth, duration, and temperature necessary for fish production, waterfowl breeding and other uses • Support greater Biodiversity

  6. APPROCH • Base assessment on Potential and Capability. • For example, if the system does not have wave energy, logs, or shoreline rocks, do not use that criteria • ID Team (e.g. If soils too oxygenated or saline for redoximorphic features, don’t expect them) • Understand, flow patterns, sediment transport and vegetation composition

  7. Hydrogeomorphic: • Groundwater recharge and discharge • Flood modification • Inundation (depth, duration, & frequency) • Aquatard • Shoreline shape

  8. Water at or near the land surface

  9. Vegetation • Community types – distribution • Density and cover • Community dynamics and succession • Recruitment and reproduction • Root characteristics • Survival

  10. Soils • Soil type • Distribution of aerobic anaerobic soils • Annual pattern of soil water states • Ponding frequency and duration • Restrictive material

  11. Erosion/Deposition: • Shoreline stability • Depositional features

  12. Water Quality • Temperature • pH • Dissolved solids • Dissolved oxygen

  13. Biotic community: • Aquatic plants • Recruitment/reproduction • Nutrient use

  14. Structures • Design stability • Materials • Overflow channels

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