Post on 29-Mar-2015
ASSESSING FUNCTIONALITY LENTIC SYSTEMSLENTIC SYSTEMS
STANDING WATER HABITAT SUCH AS STANDING WATER HABITAT SUCH AS LAKES, PONDS, SEEPS, BOGS AND LAKES, PONDS, SEEPS, BOGS AND
MEADOWSMEADOWS
LENTICLENTIC
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
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
Lentic PFC definitionDevelop 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
APPROCHBase 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
Attributes and ProcessesHydrogeomorphic: Groundwater recharge and discharge
Flood modificationInundation (depth, duration, & frequency)AquatardShoreline shape
Attributes and Processes
Vegetation:Community types – distributionDensity and coverCommunity dynamics and successionRecruitment and reproductionRoot characteristicsSurvival
Attributes and Processes
Soils:Soil typeDistribution of aerobic anaerobic soilsAnnual pattern of soil water statesPonding frequency and durationRestrictive material
Attributes and Processes
Erosion/Deposition:Shoreline stabilityDepositional features
Attributes and Processes
Water Quality:TemperaturepHDissolved solidsDissolved oxygen
Attributes and Processes
Biotic community:Aquatic plantsRecruitment/reproductionNutrient use
Attributes and Processes
Structures:Design stabilityMaterialsOverflow channels