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NR 577 Midterm Exam Questions And Correct Answers
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NR 577 Midterm Exam Questions And Correct AnswersWetland types-Answer Wet meadows, peatlands, marshes, riparian, salt flats,
Hydrology-Answer Ultimate selector of wetland biota
Hydrology and topography-Answer two most important drivers of wetland type
Wetland characteristics-Answer presence of water, unique soil characteristics, unique
biotic community; different from surrounding communities/habitats
Hydroperiod-Answer periodic/regular occurrence of flooding/saturated conditions;
controls redox processes, nutrient cycling, availability, pH, metal availability
Wetland enhancement-type of restoration aimed at improving some specific
function/characteristic
Reclamation-type of restoration; the process to make a disturbed site habitable to
organisms originally present there
Creation-type of restoration; New wetland in new location
Ecological engineering-using natural material in place of man made material to achieve
man made goals
Wetland mitigation - Answer The restoration of a wetland destroyed by development
with a new or rehabilitated wetland; has a legal definition in the context of federal
regulations
, Mitigation bank - Answer Wetland, stream, or other aquatic resource area that has been
restored, established, enhanced, or (in specific circumstances) preserved to provide
compensation for unavoidable impacts to aquatic resources
Jurisdictional wetland - Answer key legal definition, wetland under jurisdiction of the
federal government
Restoration process - Answer stakeholders, goals/ objectives, establish reference
condition, design, implementation, evaluation/monitoring
Capillary fringe - Answer subsurface zone that can remain saturated even if water table
is far below the soil surface
Wetland water budget - Answer Inputs: precipitation, surface water, groundwater
Outputs: surface water, groundwater, evapotranspiration
Wetland groundwater - Answer supplies water for upland areas and species
Oxygen - Answer major limiting factor in wetland soils
Wetland soils oxygen depletion steps - Answer (1) soil is saturated
(2)aerobic bacteria and plants consume remaining
(3) anaerobic bacteria populations in crease and begin to use O2 bonded to soil
elements
(4)leads to increase in toxic ions
result: reduced soil with low redox potential
Deficiency in soil oxygen- Answer affects stomatal openings, photosynthesis,
water/mineral uptake, hormonal imbalance
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