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Drivers And Mechanisms Of Peat Collapse In Coastal Wetlands, Benjamin J. Wilson
Drivers And Mechanisms Of Peat Collapse In Coastal Wetlands, Benjamin J. Wilson
FIU Electronic Theses and Dissertations
Coastal wetlands store immense amounts of carbon (C) in vegetation and sediments, but this store of C is under threat from climate change. Accelerated sea level rise (SLR), which leads to saltwater intrusion, and more frequent periods of droughts will both impact biogeochemical cycling in wetlands. Coastal peat marshes are especially susceptible to saltwater intrusion and changes in water depth, but little is known about how exposure to salinity affects organic matter accumulation and peat stability. I investigated freshwater and brackish marsh responses to elevated salinity, greater inundation, drought, and increased nutrient loading. Elevated salinity pulses in a brackish marsh …
The Effects Of Arbuscular Mycorrhizal Fungi On Four Legume Hosts In South Florida Pine Rockland Soils, Klara Scharnagl
The Effects Of Arbuscular Mycorrhizal Fungi On Four Legume Hosts In South Florida Pine Rockland Soils, Klara Scharnagl
FIU Electronic Theses and Dissertations
This study addressed the effects of salinity and pot size on the interaction between leguminous plant hosts and arbuscular mycorrhizal fungi in four pine rockland soils using a shade house trap-plant experiment. Little is known about the belowground diversity of pine rocklands and the interactions between aboveground and belowground biota – an increased understanding of these interactions could lead to improved land management decisions, conservation and restoration efforts. Following twelve weeks of growth, plants were measured for root and shoot dry biomass and percent colonization by arbuscular mycorrhizal fungi. Overall, arbuscular mycorrhizal fungi had positive fitness effects on the four …