Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 83 for “"coastal ecosystems"”.
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Microbial nitrogen cycling across coastal ecosystems
Contains fulltext : 325677.pdf (Publisher’s version ) (Open Access)
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Carbon and nitrogen cycling in vegetated coastal ecosystems
Coastal ecosystems comprise a relatively small area of the ocean, yet they play a disproportionate role in greenhouse gas (carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)) and nutrient cycling. Vegetated coastal ecosystems (e.g., mangroves, salt marshes, and seagrasses) are key drivers …
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The role of coastal defence structures in channeling production in coastal ecosystems
This study assessed the interaction of coastal defence structures (CDSs), namely shore-parallel<br/>‘low crested breakwater structures’ (LCSs), design features and hydrodynamic regime on the<br/>quantity and timings of macroalgae deposition. The employed sampling strategy comprised a<br/>spatially …
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Biotic and abiotic factors influencing the invasion success and ecological impacts of the Pacific oyster, Crassostrea gigas
Coastal ecosystems are subject to a wide variety of abiotic conditions. Water motion within coastal ecosystems is a key abiotic factor controlling species abundances and biological processes yet is often not measured. Coastal ecosystems are also susceptible to invasive species due to increased …
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Evaluation of spatial fragmentation of protected areas using the Spatial Assessment for Coastal Protected Areas in Caribbean Small Island Developing States
… where populations are regulated to living in coastal zones due the geographic size of the islands. The disaster risk implications to communities in coastal zones is greater due to the climate change consequences of sea level rise along with the increase frequency and intensity of storms. …
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Exploring the role of reactive oxygen species (ROS) in marine ecosystem health and function
With the rapid decline of coastal ecosystems such as coral reefs and seagrasses, it is crucial to better understand the health of these ecosystem to prevent future loss. Reactive oxygen speices (ROS), such as superoxide and hydrogen peroxide, play an underappreciated role in both organism health …
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Ghost Forests of the Mid-Atlantic : how sea-level rise is killing our coastlines
… faster than just about anywhere in the world. Coastal forests are dying off as a result-an early warning, if people will pay attention, of the disruptive changes in store for both natural ecosystems and human habitation. Dying coastal forests herald other coastal landscape changes: after the …
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Phosphate-mineral interactions and potential consequences for nutrient cycling
… key component in the overall production rate of coastal ecosystems. Mineral phases in the near-shore sediments play a significant role in the return of phosphate remineralized in the upper sediments to the water column. Sequential Extraction (SEDEX) of the solid-phase associated PO4-3 yielded …
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Phosphate-mineral interactions and potential consequences for nutrient cycling
… key component in the overall production rate of coastal ecosystems. Mineral phases in the near-shore sediments play a significant role in the return of phosphate remineralized in the upper sediments to the water column. Sequential Extraction (SEDEX) of the solid-phase associated P04-3 yielded …
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Tourism management guidelines for the Erongo coastal region, Namibia
Coastal areas are important as they contain a disproportionately large share of global urban areas; industrial activities; pollution sources; food production; tourism; biodiversity and poverty (Olsen, 1993: 201 ). Throughout much of the world, these areas face considerable population and …
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CHANGES IN LEAF MORPHOLOGY, PHOTOSYNTHESIS AND NITROGEN CONTENT IN TWO COASTAL SHRUBS
… Morella cerifera and Baccharis halimifolia in coastal environments. The purpose of my study was to investigate the physiological and structural changes that occur as leaves age. Photosynthesis, incident light, chlorophyll, and leaf C:N ratios were quantified for young, intermediate, and old …
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Assessing the ecological vulnerability of natural flood defences and risks to agricultural land following seawater flooding
… affecting the natural environment by altering ecosystems, and leading to habitat loss. Pressingly, the frequency and severity of storm surge flooding in low-lying coastal regions is projected to increase under future climate scenarios. There is a growing need to understand how these events will …
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Benthic and pelagic responses to endobenthic bioturbator (Kraussillichirus kraussi) density, temperature and eutrophication in a global change mesocosm experiment
Coastal ecosystems are increasingly being threatened by global change stressors such as eutrophication and warming, which can impair ecosystem functioning and ultimately affect societal well-being. Addressing this challenge, in part, requires identifying and understanding mechanisms that may …
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Optical Signatures of Bioavailable and Terrigenous Dissolved Organic Matter Across Long Island Sound and Hudson River Estuaries
… fundamental processes governing DOM cycling in coastal systems. Results demonstrate that variability in DOM optical signatures reflects the interplay between biological production, microbial transformation, and hydrologic forcing. At the microscale, laboratory incubations and cultures with …
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Exploring the Behaviour and Physiology of Juvenile Bonefish (Albula vulpes): Fundamental and Applied Perspectives
Coastal ecosystems, despite recent degradation, are home to many fish species, some of which are juveniles of economically important fish in recreational fisheries. Bonefish (Albula vulpes) are one such example of a recreationally important sport fish throughout the Caribbean; to date, most …
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Impacts of burrowing sandprawns (Kraussillichirus kraussi) on water quality, phytoplankton and pelagic bacterial assemblages
Coastal environments are among the most threatened ecosystems globally, with water quality degradation constituting a major scientific and management issue that requires addressing. Burrowing sandprawns (Kraussillichirus kraussi) have been shown in past research to improve water quality by removing …
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Monitoring Anthropogenic Carbon in Cape Cod Bay
Coastal oceans are diverse regions which are highly important to human activity, coastal ecosystems, and carbon uptake. Parameters such as pH on the total scale (pHₜ), Dissolved Inorganic Carbon (DIC), and Total Alkalinity (TA) contribute to understanding the health of coastal waters such as Cape …
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Exploring the social, economic, and ecological dimensions of managing marine ecosystems
The degradation of marine and coastal ecosystems, compounded by the impacts of climate change, presents one of the greatest challenges to achieving a sustainable social-ecological future. Coastal marine ecosystems are essential for social-ecological resilience, providing vital services such as …
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Spatial Variation in Basal Resources and Trophic Position of Selected Fishes of the North-Central Gulf of Mexico
… on the isotope values of organisms living in coastal ecosystems. The objectives of this study were to determine relationships between total length and isotope value, estimate basal resource usage and trophic position of target species from Mississippi Sound, reef, and pelagic environments, and …
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