Final spring 2007 - Wetland Types and Classification Why...

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Final Exam SOS4244 Wetlands (Spring 2007) D EFINITION S ECTION (24 POINTS , 2 PER TERM ) D EFINE THE F OLLOWING I N TERMS OF THE CONTEXT OF THIS COURSE , IF APPROPRIATE PROVIDE AN EXAMPLE Q1) Environmental Forcing Function Q2) Hydrarch Succession change in community structure over time in response to changes in forcing functions Q3) EPC Equilibrium Phosphorus Concentration Retention: detention threshold of soils Sorption: desorption threshold of particles Q4) Prairie Pothole depressed wetlands (primarily freshwater marshes) created by glacial material Q5) “Taking” government laws that protect wetlands for public good, but lead to a loss of that use of land by a private land owner (denial of individual’s right to use his or her property) Q6) Migratory Bird Rule EPA clarified waters of US includes waters that include habitat by birds protected by Migratory Bird Treaties, habitat by other migratory birds which cross state lines, habitat for endangered spe- cies, used to irrigate crops in interstate commerce Q7) “Obligate” Vegetative Indicator Species plant typically found in landscape occurs exclusively in wetland (99% probable occurrence) ex. Cypress, water hyacinth Q8) Service Area mitigated wetland benefit area generally corresponded to watershed
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Q9) NWI National Wetlands Inventory by UF Fish and Wildlife service Q10) Ridge and Slough in Everglades, peat-based system of dense sawgrass ridges interspersed with adjacent and relatively open sloughs that orients to flow direction on a gentle slope. Q11) Osmoregulation active regulation of osmotic pressure of an organisms fluids to maintain homeostasis of the organisms water content; active excretion or maintenance of salt (method of adapta- tion to high salinity stresses) Q12) Redox oxidation: loss of electrons or increase in oxidative state by a molecule reduction: gain of electrons or decrease in oxidative state of a molecule S HORT A NSWER S ECTION - P LEASE ANSWER CONCISELY AND IN BULLET FASSION WHERE APPROPRIATE . Q13) a)What is periphyton, b)what conditions must be present to form cancerous periphyton, c)what is the connection between it and Marl soils in the Everglades, and e) how does marl formation influence water quality? (12 points) a) mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems b) nutrients that can be absorbed and persistent in periphyton; nutrient overloading to maintain PP c) Marl is formed from biochemical extraction of calcium carbonate from the movement of overlying water; environment for marl deposition is sparsely vegetated marsh where water surface is well lighted for the photosynthesizing algae and there is con- siderable oxidation of organic material in sediment. d) In order for marl to be deposited, rate of OM decomp must be low in comparison to
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Final spring 2007 - Wetland Types and Classification Why...

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