BIO SCI 94 Lecture 6: E179+Lecture+6+Notes+Spring+2016

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 94
• Professor: Peter A.Bowler

Document Summary

Lecture 6: marshes, swamps, bogs, fens and vernal pools: marshes, swamps, bogs, fens, vernal pools, video notes: what makes a quality lake, marshes, swamps, bogs, fens. Swamps and marshes are open systems whose water sources are rivers or streams. Bogs receive water from rainfall while fens are sustained by ground water seeping upward. The source of water affects the hydraulic residence time of water within these habitats: marshes and swamps have a shorter hydraulic residence time than bogs or fens. The swamp has the least residence time: order from least to greatest: swamp, marsh, fen, bog, hydraulic residence time is the time that required to refill an empty lake with its natural inflow. It is calculated by dividing the volume by the inflow or outflow rate. Marshes are dominated by emergent aquatic herbaceous plants such as cattails, bulrushes and sedges, and have submerged or floating macrophytes such as pondweeds and water lilies (a floating leaf plant).