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Tracking Rates Of Ecotone Migration Due To Salt-Water Encroachment Using Fossil Mollusks In Coastal South Florida, Evelyn E. Gaiser, Angelikie Zafiris, Pablo L. Ruiz, Franco A.C. Tobias, Michael S. Ross
Tracking Rates Of Ecotone Migration Due To Salt-Water Encroachment Using Fossil Mollusks In Coastal South Florida, Evelyn E. Gaiser, Angelikie Zafiris, Pablo L. Ruiz, Franco A.C. Tobias, Michael S. Ross
FCE LTER Journal Articles
We determined the rate of migration of coastal vegetation zones in response to salt-water encroachment through paleoecological analysis of mollusks in 36 sediment cores taken along transects perpendicular to the coast in a 5.5 km2 band of coastal wetlands in southeast Florida. Five vegetation zones, separated by distinct ecotones, included freshwater swamp forest, freshwater marsh, and dwarf, transitional and fringing mangrove forest. Vegetation composition, soil depth and organic matter content, porewater salinity and the contemporary mollusk community were determined at 226 sites to establish the salinity preferences of the mollusk fauna. Calibration models allowed accurate inference of salinity and vegetation …
Hydrologic Measurements And Implications For Tree Island Formation Within Everglades National Park, Jose Bazante, Gary Jacobi, Helena M. Solo-Gabriele, David Reed, Sherry Mitchell-Bruker, Daniel L. Childers, Lynn Leonard, Michael Ross
Hydrologic Measurements And Implications For Tree Island Formation Within Everglades National Park, Jose Bazante, Gary Jacobi, Helena M. Solo-Gabriele, David Reed, Sherry Mitchell-Bruker, Daniel L. Childers, Lynn Leonard, Michael Ross
FCE LTER Journal Articles
Tree islands in the Shark River Slough of the Everglades National Park (ENP), in the southern state of Florida in the United States, are part of a wetland system of densely vegetated ridges interspersed within relatively open sloughs. Human alteration of this system has had dramatic negative effects on the landscape of the region and restoration efforts will require adjusting the hydrology of the region to assure the preservation of these important ecologic features. The primary objectives of this study were to document the hydrology in the vicinity of tree islands in ENP by measuring velocities in time and space …
Characteristics Of Surface-Water Flows In The Ridge And Slough Landscape Of Everglades National Park: Implications For Particulate Transport, Lynn Leonard, Alexander L. Croft, Dan Childers, Sherry Mitchell-Bruker, Helena Solo-Gabriele, Michael S. Ross
Characteristics Of Surface-Water Flows In The Ridge And Slough Landscape Of Everglades National Park: Implications For Particulate Transport, Lynn Leonard, Alexander L. Croft, Dan Childers, Sherry Mitchell-Bruker, Helena Solo-Gabriele, Michael S. Ross
FCE LTER Journal Articles
Over the last one hundred years, compartmentalization and water management activities have reduced water flow to the ridge and slough landscape of the Everglades. As a result, the once corrugated landscape has become topographically and vegetationally uniform. The focus of this study was to quantify variation in surface flow in the ridge and slough landscape and to relate flow conditions to particulate transport and deposition. Over the 2002–2003 and 2003–2004 wet seasons, surface velocities and particulate accumulation were measured in upper Shark River Slough in Everglades National Park. Landscape characteristics such as elevation, plant density and biomass also were examined …
The Contribution Of Leaching To The Rapid Release Of Nutrients And Carbon In The Early Decay Of Wetland Vegetation, Stephen E. Davis, Dan Childers, Gregory B. Noe
The Contribution Of Leaching To The Rapid Release Of Nutrients And Carbon In The Early Decay Of Wetland Vegetation, Stephen E. Davis, Dan Childers, Gregory B. Noe
FCE LTER Journal Articles
Our goal was to quantify the coupled process of litter turnover and leaching as a source of nutrients and fixed carbon in oligotrophic, nutrient-limited wetlands. We conducted poisoned and non-poisoned incubations of leaf material from four different perennial wetland plants (Eleocharis spp., Cladium jamaicense, Rhizophora mangle and Spartina alterniflora) collected from different oligotrophic freshwater and estuarine wetland settings. Total phosphorus (TP) release from the P-limited Everglades plant species (Eleocharis spp., C. jamaicense and R. mangle) was much lower than TP release by the salt marsh plant S. alterniflora from N-limited North Inlet (SC). For most species and sampling times, total …
Coastal Groundwater Discharge – An Additional Source Of Phosphorus For The Oligotrophic Wetlands Of The Everglades, René M. Price, Peter K. Swart, James W. Fourqurean
Coastal Groundwater Discharge – An Additional Source Of Phosphorus For The Oligotrophic Wetlands Of The Everglades, René M. Price, Peter K. Swart, James W. Fourqurean
FCE LTER Journal Articles
In this manuscript we define a new term we call coastal groundwater discharge (CGD), which is related to submarine groundwater discharge (SGD), but occurs when seawater intrudes inland to force brackish groundwater to discharge to the coastal wetlands. A hydrologic and geochemical investigation of both the groundwater and surface water in the southern Everglades was conducted to investigate the occurrence of CGD associated with seawater intrusion. During the wet season, the surface water chemistry remained fresh. Enhanced chloride, sodium, and calcium concentrations, indicative of brackish groundwater discharge, were observed in the surface water during the dry season. Brackish groundwaters of …