7. PRSR 04-11-2007 - Laserfiche WebLink

Home Browse Search

Sedimentation The process by which matter (usually soil particles) settles on a substrate following transport by water, wind, or ice. Seepage The slow, diffuse oozing of groundwater onto the earth's surface. Shallow Lake Lakes with mean depth of less than 10 feet Shrub layer A vegetation layer, usually less that 6 feet high, of shrubs and tree seedlings. Shrub swamp A wetland community dominated by a nearly continuous to continuous canopy (70 to 100% cover) of shrubs, such as willows and alders. Subcanopy A vegetation layer, composed of patches of individuals of approximately equal height, that is lower than the canopy layer; often refers to a layer of saplings, tall shrubs, or small trees between 6 and 35 feet high. Submergent Describes an aquatic plant that grows entirely under water. Substrate The surface layer of organic or mineral material-such as till, outwash, or bedrock- from which the soil is formed. Succession The change in vegetation over time. Swale A broad, shallow depression in a till plain or broad river plain. Swamp A wetland community with a fairly continuous to continuous canopy of shrubs or trees, such as speckled alder, black ash, or tamarack. Swamps generally occur in shallow basins or wet depressions. 4Talus Rocks and other coarse mineral debris that accumulate at the base of a cliff or steep slope. Terrace A sandy and gravelly alluvial plain bordering a river. Terraces represent former river floodplains, left stranded when the river level dropped because of channel downcutting or decreased flow. Terraces are ordinarily level or nearly level and are seldom flooded. Till Unstratified and unsorted material deposited directly by a glacier. Till consists of clay, sand gravel, or boulders mixed in any proportion. Till plain Abroad and level or gently undulating landform composed of material that was deposited underneath and at the margin of a glacier as the ice sheet melted; also referred to as aground moraine. Total Phosphorus (TP) A measure of all of the different forms of phosphorus in water. Includes phosphorus dissolved in the water, suspended or incorporated in algae or other organisms. Total Suspended Solids (TSS) Particulate material which floats in or is carried along in water (e.g., algae, soil particles). Transitional habitat A habitat present between two adjacent natural communities (for example, the edge of a forest along a wet meadow). Transitional habitats often have features that set them apart form the habitats formed by either of the adjacent communities. Trophic State The level of growth or productivity of a lake as measured by phosphorus content, algae abundance, or depth of light penetration. Understory The vegetation occurring below the canopy in a plant community. Vine A plant with along, weak stem that grows along the ground or climbs on other vegetation for support. Watershed: The area of land draining into a specific body of water. Water Transparency A measure of the clarity of water. The depth at which an object can be seen in water. Wetland Habitats where the soil is saturated or covered with water for part of the year. Woodland A wooded habitat characterized by an interrupted tree canopy; also used as a general term to describe any tract of land with trees growing on it. Woodland-brushland An upland plant community composed of a patchy canopy (10 to 70% cover) of mature trees and a dense understory of shrubs, tree shoots, and saplings. Usually the Top of the World Park Addition Natural Area Management Plan