LENTIC SYSTEMS ASSESSING FUNCTIONALITY LENTIC SYSTEMS

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