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Showing 1 to 20 of 32 for “"Spartina alterniflora"”.
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Spartina Alterniflora Productivity and Salt Marsh Stability Relative to Marsh Platform Elevation
<p>Standing biomass of <em>Spartina alterniflora</em> Loisel. (<em>Spartina</em>) has been shown to correlate with the relative elevation of the sediment surface and anomalies in mean sea level. Aboveground biomass, stem density, stem height and percent organic nitrogen were measured as a function …
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Water Column Ammonium Concentration and Salinity Influence Nitrogen Uptake and Growth of Spartina Alterniflora
<p>Salt marsh macrophytes, such as <em>Spartina alterniflora, </em>play a<em> </em>critical role in uptake and transformation of inorganic nitrogen before it reaches coastal waters, thereby reducing the potential for eutrophication. Although nitrogen availability typically limits <em>S. …
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Analyzing remote sensing-derived normal difference vegetation index to predict coastal protection by Spartina alterniflora
… for quantifying vegetation drag, focusing on Spartina alterniflora (S. alterniflora), a smooth cordgrass native to the study site: Waquoit Bay National Estuarine Research Reserve. The drag of a single plant is proportional to frontal area. The drag per bed area is proportional to the drag of a …
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Analyzing Remote Sensing-Derived Normal Difference Vegetation Index to Predict Coastal Protection by Spartina alterniflora
… for quantifying vegetation drag, focusing on Spartina alterniflora (S. alterniflora), a smooth cordgrass native to the study site: Waquoit Bay National Estuarine Research Reserve. The drag of a single plant is proportional to frontal area. The drag per bed area is proportional to the drag of a …
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The Influence of Flooding on Contributions of Spartina Alterniflora Roots to Salt Marsh Soil Volume in a Field Setting
… and flooding regime for the macrophyte Spartina alterniflora Loisel. in natural, salt marsh, field settings located across southeastern coastal Louisiana. The results of this research propose the existence of a stress-tolerance threshold (beyond which root specific gravity modifications …
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A Comparison of Vegtation Indices and Conventional Ecotoxicological Plant Growth Metrics to Assess the Lethal and Sublethal Effects of Atrazine on Smooth Cordgrass,'Spartina alterniflora'
… plant species, such as smooth cord grass Spartina alterniflora. Spartina alterniflora is the most dominant macrophyte in many estuarine regions of the U.S., particularly in the southeastern U.S. and may be often subject to chronic atrazine exposure. This study assessed the use of …
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Effects of Elevation and Nutrient Availability On the Primary Production of Spartina Alterniflora and the Stability of Southeastern Coastal Salt Marshes Relative to Sea Level Rise
… of the United States the smooth cord grass Spartina alteriflora Loisel is responsible for maintaining the elevation of its environment, in equilibrium with sea level rise (SLR), through mineral (sediment) and biogenic accumulation. Accelerating rates of relative sea level rise pose the …
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Examination of Abiotic Drivers and Their Influence on Spartina alterniflora Biomass over a Twenty-eight Year Period Using Landsat 5 TM Satellite Imagery of the Central Georgia Coast
… of aboveground biomass for Marsh Cordgrass, Spartina alterniflora, on the Central Georgia Coast. The linkages between drivers and plant response via soil edaphic factors are captured in our graphical conceptual model. We used geospatial techniques to scale up in situ measurements of …
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Vegetative Community and Health Assessment of a Constructed Juncus-Dominated Salt Marsh in The Northern Gulf Of Mexico
… differing age have since been planted with <em>Spartina alterniflora, Juncus roemerianus, Uniola paniculata, S. patens, </em>and <em>Panicum amarum</em>. Ecological assessment and monitoring of this restoration project was completed by measuring elevation, soil condition, vascular plant …
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THE IMPACT OF SEA-LEVEL RISE ON COASTAL WETLANDS USING IN-SITU MESOCOSM EXPERIMENTS, LANDSCAPE MODELING, AND TRADITIONAL ECOLOGICAL KNOWLEDGE MAPPING
… on two commonly found saltmarsh species,<em> Spartina alterniflora </em>and <em>Spartina patens</em>. I examined productivity and metrics to these stressors using a controlled mesocosm experiment in the western channel of the Pascagoula River, Mississippi. I found varying strategies of growth …
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Integrating Digital Aerial Photography and Lidar-Derived Information For Object-Based Coastal Tidal Marsh Classification Using Tree-Based Ensemble Algorithms
… detailed tidal marsh classes: tall creekbank spartina alterniflora, intermediate spartina alterniflora, exposed mudflats, salicornia/short spartina and juncus roemerianus. A high-resolution Digital Terrain Model (DTM) was first developed from LiDAR bare earth data, based on which topographic …
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A novel system to study seed recalcitrance and dormancy - comparative proteomics between two Spartina species
Spartina alterniflora is a dominant salt marsh cordgrass along the U.S. Atlantic and Gulf coasts, and the species is widely used for wetland restoration in Louisiana. S. alterniflora seeds are shed dormant from the mother plant. However, long-term preservation of S. alterniflora seeds is …
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The role of sulfur in salt marsh metabolism
The rate of sulfate reduction in stands of dwarf Spartina alterniflora in the Great Sippewissett Salt Marsh is approximately 75 moles S04 m2 year-1. This is the highest rate reported for any natural ecosystem. Sulfate reduction is the most important form of respiration in the marsh and results in …
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Vegetative Response to Hurricane Sedimentation
… response of the dominant salt marsh macrophyte Spartina alterniflora var. Loisel to sedimentation from Hurricanes Gustav and Ike. A range of sedimentation was used to track the above and belowground plant response, as well as the volume of mineral and organic matter, in the upper reaches of the …
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Uptake of kepone by aquatic macrophytes
… americanus (Pers.)], and smooth cordgrass [Spartina alterniflora (Loisel.)] removed Kepone® (dechachloro-octahydro-1,3,4-metheno-2H-cyclobuta[cd] pentelen-2-one) from water. ¹⁴C-Kepone was translocated from roots and accumulated in small, but significant, quantities in the aerial portions of …
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A field investigation of diffusion within a submerged plant canopy
… within a tidal marsh canopy, specifically Spartina alterniflora. Vegetation densities from 0-1.4% stem coverage and flows from 2-12 cm/sec were investigated using Rhodamine WT tracer, with resultant measured diffusivities ranging from approximately 0.5-3.0 cm2/sec. Diffusivity was found to …
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Symbiotic Associations and Pathogenic Potential of Vibrios In the North Inlet Estuary
… coast are largely dominated by the macrophytes Spartina alterniflora (Loisel) and Juncus roemerianus (Scheele) which form vast stands with robust, interconnecting root systems and contribute to sediment accretion, functioning to shape intertidal zones. Large stands of these grasses are …
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Impacts of the Deepwater Horizon Oil Spill on Microbial-Mediated Cellulose Decomposition in Mississippi Gulf Coast Salt Marshes
… marsh sediments was assessed in stands of <em>Spartina alterniflora</em> and <em>Juncus roemerianus</em> in 9 Mississippi Gulf Coast marshes exposed to differing oiling intensities<em>.</em> The cotton strip bioassay technique was used as a proxy for cellulose decomposition. In addition, rates …
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Impacts of Microenvironment On Distributions and Activities of Bacteria In A Salt Marsh Environment
<p>Infaunal burrows and the rhizosphere of Spartina alterniflora are ecologically relevant microenvironments that impact the distributions of bacteria in a salt marsh ecosystem. Infaunal burrows produced by the fiddler crabs Uca pugilator and Uca pugnax are abundant features of southeastern United …
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Observations of a particle capture on a cylindrical collector : implications for particle accumulation and removal in aquatic systems
… efficiencies. In addition, a model of a Spartina alterniflora wetland is presented which shows that the mechanism of particle capture can remove a significant portion of suspended particles. Finally, experiments in which roughness elements were added to the collectors showed that capture …
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