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 121 for “"Coral reefs"”.
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The Past and Present of Maldivian Coral Reefs
Coral reefs are highly diverse, valuable, but fragile ecosystems that are experiencing unprecedented degradation from anthropogenic impacts and climate change. Degraded reefs provide poorer ecosystem services, including reduced shoreline protection and diminished livelihoods through declining reef …
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Investigating the ecological role of sound on coral reefs
… to optimize their choice of settlement habitat. Coral reefs feature particularly complex natural soundscapes, yet little is known about the potential effects of these sounds on coral larvae. Reef soundscapes are also frequently polluted by anthropogenic noise, which can disrupt natural cues and …
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Exploring the climate change refugia potential of equatorial Pacific coral reefs
… upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching. However, EUC water is potentially more acidic and richer in dissolved inorganic nutrients (DIN), both widely considered detrimental to coral reef …
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Coral reefs of the Indo-Pacific and changes in global Holocene
… climate feedback that has been proposed is the Coral Reef Hypothesis whereby significant increases in coral reef growth may have contributed to the deglacial increase in atmospheric CO2 observed in the ice core records. This thesis examines the role of coral reefs in the oceanic carbonate budget …
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Exploring the climate change refugia potential of equatorial Pacific coral reefs
… upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching. However, EUC water is potentially more acidic and richer in dissolved inorganic nutrients (DIN), both widely considered detrimental to coral reef …
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An Analysis of the International Legal Framework for the Protection of Coral Reefs
The biodiversity found on a coral reef is above and beyond that found in the tropical rainforests, with an estimated 25 percent of all marine species concentrated in an area that only covers 1 percent of the ocean floor. This huge wealth of biodiversity is founded upon a structure made entirely of …
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Using biological traits analysis to investigate ecological functioning of cold-water coral reefs
Cold-water coral reefs are fragile, slow growing systems that are found in all oceans. Past research has focused on the species assemblages found on cold-water coral reefs. The species found on cold-water coral reefs are representative of the species assemblages found in the surrounding waters, …
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Coral biomineralization, climate proxies and the sensitivity of coral reefs to CO₂-driven climate
Scleractinian corals extract calcium (Ca²⁺) and carbonate (CO₃²⁻) ions from seawater to construct their calcium carbonate (CaCO₃) skeletons. Key to the coral biomineralization process is the active elevation of the CO₃²⁻ concentration of the calcifying fluid to achieve rapid nucleation and growth …
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Coral biomineralization, climate proxies and the sensitivity of coral reefs to CO2-driven climate change
Scleractinian corals extract calcium (Ca2+) and carbonate (CO2−3) ions from seawater to construct their calcium carbonate (CaCO3) skeletons. Key to the coral biomineralization process is the active elevation of the CO2−3 concentration of the calcifying fluid to achieve rapid nucleation and growth …
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Bias Reduction in Machine Learning Classifiers for Spatiotemporal Analysis of Coral Reefs using Remote Sensing Images
… classifiers as applied to the detection of coral reefs using remote sensing images. Three scientific studies have been conducted as part of this research: 1) Evaluation of Spatial Generalization Characteristics of a Robust Classifier as Applied to Coral Reef Habitats in Remote Islands of the …
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Temporal variation in the coral reefs of the east coast of the inner gulf of Thailand
… permanent line transects established on fourteen reefs on the eastern seaboard of the Gulf of Thailand were monitored through a three-year period (1995- 1998) using a video transect method. Hierarchical cluster analysis shows three distinctive reef community types dominated by 1) Porites, 2) …
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Ecosystem Reboot : How scientists are building an inside-out Noah’s Ark for Florida’s vanished coral reefs
In Florida, a deadly marine plague called stony coral tissue loss disease has inspired an unprecedented conservation plan: to rescue affected corals from the wild, and keep them alive in captivity, indefinitely. The idea was to make a Noah’s Ark turned inside out, evacuating corals from an …
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Coral reefs in the Anthropocene Ocean: novel insights from skeletal proxies of climate change, impacts, and resilience
… rapid changes in ocean conditions. Shallow-water coral reefs are experiencing the brunt of these changes, including intensifying marine heatwaves (MHWs) and rapid ocean acidification (OA). Consequently, coral reefs are in broad-scale decline, threatening the livelihoods of hundreds of millions of …
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From micro to macro: the benefits and pitfalls of environmental generalism on coral reefs in the Anthropocene
… across tropical, temperate, and deep-water reefs, a shift in environmental norms across marine ecosystems is causing species to expand into otherwise marginal environments. This widespread ecosystem restructuring raises the questions of which coral species in which locations will persevere …
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Assessing anthropogenic noise impacts and relevant soundscape cues for marine invertebrates: leveraging squid and coral reefs as model systems
… anthropogenic noise, and 2) particle motion of coral reef soundscapes in the U.S. Virgin Islands. In laboratory-based experiments I exposed D. pealeii to construction noise originally recorded from an offshore wind farm. I found significant increases in squids’ alarm responses and in failed prey …
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Assessing anthropogenic noise impacts and relevant soundscape cues for marine invertebrates: leveraging squid and coral reefs as model systems
… anthropogenic noise, and 2) particle motion of coral reef soundscapes in the U.S. Virgin Islands. In laboratory-based experiments I exposed D. pealeii to construction noise originally recorded from an offshore wind farm. I found significant increases in squids’ alarm responses and in failed prey …
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Connectivity between fish assemblages of seagrass beds, mangroves and coral reefs. Evidence from the Caribbean and the western Indian Ocean.
Contains fulltext : 27459.pdf (Publisher’s version ) (Open Access)
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Environmental assessment, documentation and spatial modeling of heavy metal pollution along the Jordan Gulf of Aqaba using coral reefs as environmental indicator
… and the oil port. The results have shown that coral reefs can be used as good environmental indicator for assessments and monitoring processes, and they can provide data and information on both the spatial distribution of pollution and their history. The present work is the first to document …
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Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
… habitats, including mangroves, seagrass beds and coral reefs, is coming under increasing pressure from human activities. Many coral reef fish species are thought to use mangroves and seagrass beds as juvenile nurseries before migrating to coral reefs as adults. Identifying essential habitats and …
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