BIO SCI E179 Lecture Notes - Lecture 1: Indicator Species, Aquifer, Herbaceous Plant
6 Feb 2019
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Document Summary
Hydric soils (soil that is permanently or seasonally saturated by water, resulting in anaerobic conditions) Hydrophytic vegetation with wetland indicator species present. Wetland types are distinguished by water flow and vegetation. Surface water wetlands receive water from precipitation and surface flows (these include surface water slopes and surface water depression wetlands) Groundwater slope and groundwater depression wetlands get their water from underground sources (the water table or subsurface aquifer) Marshes have emergent herbaceous vegetation like cattails. Swamps sustain woody (trees) emergent vegetation, forested. Both are open systems fed by rivers or streams. Freshwater marshes and swamps are characterized by a slow but steady flow of water. Bogs are surface water depression wetlands (rain-fed) Water flow in bogs is low or non-existent. Fens are groundwater depression wetlands (water flows in from the underground water table or aquifer) Mitigation : the replacement of habitat that is taken by development. No net loss : means no net loss in habitat size or quality.
