Section 62-340.500, F.A.C. Hydrologic Indicators Flashcards
Algal Mats
the presence or remains of nonvascular plant material which develops during periods of inundation and persists after the surface water has receded; often associated with aufwuchs and water marks; degree to which this indicator is expressed on a site is best interpreted when the rainfall history of the area is known
Aquatic Mosses or Liverworts
(bryophytes) lack true roots and leaves and are generally found in shaded, moist environments and in shaded, forested floodplains that experience prolonged, seasonal inundation
Aquatic Plants
plants which typically float on water or require water for its entire structural support, or which will desiccate outside of the water; grow naturally in areas where inundation is permanent or nearly so
Aufwuchs
the presence or remains of the assemblage of sessile, attached, or free-living, nonvascular plants and invertebrate animals (including protozoans and fresh water sponges) which develop a community on inundated surfaces; often appear as a crust-like growth, sometimes bleaching to white in sunlight during dry seasons
Drift Lines and Rafted Debris
vegetation, litter, and other natural or manmade material deposited in discrete lines or locations on the ground or against fixed objects, or entangled above the ground within or on fixed objects in a form and manner which indicates that the material was waterborne
Elevated Lichen Lines
lichens are a symbiotic association of a fungus and an alga; typical forms include: crustose (flattened and appressed like a film on the bark), foliose (flattened, thin, and lobed), and fruticose (highly branched, forming a shrubby, bushy structure of flattened or cylindrical branches); lichen are NOT tolerant of inundation
Evidence of Aquatic Fauna
considers the presence or indications of the presence of animals which spend all or portions of their life cycle in water; only those life stages which depend on being in or on water for daily survival are included in this indicator; look for evidence in the cast skins of insect larva on emergent vegetation, or remnant molluscan shells, and crayfish burrows
Hydrologic Data
consists of reports, measurements, or direct observation of inundation or saturation which support the presence of water to an extent consistent with the provisions of the definition of wetlands and the criteria within the rule, including evidence of a seasonal high water table at or above the soil surface
Morphological Plant Adaptations
specialized structures or tissues produced by certain plants in response to inundation or saturation which normally are not observed when the plant has not been subject to conditions of inundation or saturation such as: hydric adventitious roots, hypertrophied lenticels, expanded lenticels, prop-roots, and buttressing tree bases; * once a morphological adaptation develops, it does not disappear if the site is drained and no longer functions as a wetland
Secondary Flow Channels
discrete and/or obvious natural pathways of water flow landward of the primary bank of a stream watercourse and typically parallel to the main channel; often occur in conjunction with sediment deposition and water marks
Sediment Deposition
mineral or organic matter deposited in or shifted to positions indicating water transport; sediment deposited as erosion from uplands is NOT included in this indicator
Vegetated Tussocks of Hummocks
areas where vegetation is elevated above the natural grade on a mound built up of plant debris, roots, and soils so that the growing vegetation is not subject to the prolonged effects of soil anoxia; often associated with tree buttressing
Water Marks
are created by the staining effect of a sustained water elevation; appears as a distinct line created on fixed objects, including vegetation
