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Dissertations / Theses on the topic 'Coral bleaching'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Graham, Nicholas. "Effects of coral bleaching on coral reef fish assemblages." Thesis, University of Newcastle Upon Tyne, 2008. http://hdl.handle.net/10443/128.

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Coral reefs have emerged as one of the ecosystems most vulnerable to climate variation and change. While the contribution of climate warming to the loss of live coral cover has been well documented, the associated effects on fish have not. Such information is important as coral reef fish assemblages provide critical contributions to ecosystem function and services. This thesis assesses the medium to long term impacts of coral loss on fish assemblages in the western Indian Ocean. Feeding observations of corallivorous butterflyfish demonstrates that considerable feeding plasticity occurs among h

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2

Hill, Ross. "Coral bleaching : photosynthetic impacts on symbiotic dinoflagellates /." Electronic version, 2008. http://hdl.handle.net/2100/526.

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University of Technology, Sydney. Faculty of Science.<br>Global climate change is leading to the rise of ocean temperatures and is triggering mass coral bleaching events on reefs around the world. This involves the expulsion of the symbiotic dinoflagellate algae, known as zooxanthellae, from the coral host. Coral bleaching is believed to occur as a result of damage to the photosynthetic apparatus of these symbionts, although the specific site of initial impact is yet to be conclusively resolved. This thesis examined a number of sites within the light reactions of photosynthesis and evaluated t

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3

Klaus, Rebecca. "Coral bleaching indices in theory and in practice : a comparative assessment of the 1997/98 Indian Ocean coral bleaching event." Thesis, University of Warwick, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408231.

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4

Harikishun, Ameil. "Coral bleaching responses in Sodwana Bay, South Africa." Bachelor's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/7640.

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This study assessed the bleaching response (BR) of coral colonies within the central reef complex in Sodwana Bay, South Africa. Bleach surveys were conducted at 16 sites on 8 reefs over the period of 2007 to 2013. A total of 12 858 coral colonies from 30 taxa were randomly sampled and colonies were placed into 7 categories of bleaching response. This allowed for the calculation of taxon-specific BR as a weighted percentage of coral cover bleached. Continuous temperature records from a permanent temperature gauge on Two Mile Reef were used to assess thermal stress over this period. The percenta

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5

Dunn, Simon Robert. "Cell death mechanisms during bleaching of the sea anemone Aiptasia sp." Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250114.

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6

Robison, Jennifer D. "The photophysiology of symbiotic dinoflagellates (Symbiodinium) under varying light and thermal conditions and the implications for coral bleaching." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 8.14 Mb., 97 p, 2006. http://proquest.umi.com/pqdlink?did=1163244091&Fmt=7&clientId=8331&RQT=309&VName=PQD.

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7

Yeung, Yiphung. "Baseline, demography and bioerosion of Hong Kong coral communities." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/683.

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Hong Kong provides a marginal marine environment for coral growth due to its high latitude in addition to massive freshwater run-off from the Pearl River Delta. Previous studies have reported that Hong Kong waters nurture 84 species of scleractinian corals in 28 families distributed in various locations, especially the protected bays in the eastern waters. However, very little is known about the benthic composition and health of coral communities. This study aimed to 1) determine the benthic composition of local coral communities and understand the environmental determinants of coral coverage

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8

Xie, Yang James. "Coral growth and erosion in Hong Kong /Xie Yang James." HKBU Institutional Repository, 2017. https://repository.hkbu.edu.hk/etd_oa/379.

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Coral ecosystems are highly diverse and productive ecosystems in tropical and subtropical oceans, playing a significant role in marine ecosystems. They have many important functions: a carbon sink in the global carbon cycle via calcification, habitats for many economically important species, acting as shoreline buffers, and a potential source of natural chemical substances of medical importance (Moberg et al. 1999). Growth and erosion are the two driving forces that determine the fate of a coral reef. Coral growth is achieved by calcification - the deposition of calcium carbonate skeleton by l

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9

Toyoshima, Junko. "Cell migration of zooxanthellae in the coral Montipora capitata." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7050.

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10

Zamani, Neviaty Putri. "Effects of environmental stress on cell division and other cellular parameters of zooxanthellae in the tropical symbiotic anemone Heteractis malu, Haddon and Shackleton." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294899.

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11

Hendee, James C. "A Data-Driven Soft Real-Time Expert System for Producing Coral Bleaching Alerts." NSUWorks, 2000. http://nsuworks.nova.edu/gscis_etd/579.

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In the Florida Keys there are many physical, chemical and biological events of interest and concern to personnel of the Florida Keys National Marine Sanctuary, marine biologists, oceanographers, fishermen and divers. Large volumes of continuously generated meteorological and oceanographic data from instruments in the SEAKEYS (Sustained Ecological Research Related to Management of the Florida Keys Seascape) network help to understand these events. However, since no one has the time to look at every printout of data from every station, every day, seven days a week, it is highly desirable to have

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12

Suharsono. "Ecological and physiological implications of coral bleaching at Pari Island, Thousand Islands, Indonesia." Thesis, University of Newcastle upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308835.

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13

Lewis, Cynthia Fairbank. "Florida's Pillar Coral (Dendrogyra cylindrus): The Roles of the Holobiont Partners in Bleaching, Recovery, and Disease Processes." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3952.

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The iconic pillar coral, Dendrogyra cylindrus, is one of five Caribbean species listed in 2014 under the US Federal Endangered Species Act because of its extreme low abundance and continued decline in US waters. Until recently, little was known about the demographics or genetic diversity of Florida’s D. cylindrus population. This study represents the first time two holobiont partners (coral animal and associated photosynthetic algal endosymbionts) have been closely examined, spatially and temporally, in this little-studied species. The aim was to explore the influences of coral animal genotype

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14

Venn, Alexander Ashley. "Coral bleaching : the significance of the molecular diversity and photoprotective pigments of zooxanthellae (Symbiodinium)." Thesis, University of York, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423605.

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15

Morris, Tamaryn. "Physical oceonography of Sodwana Bay and its effect on larval transport and coral bleaching." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/2038.

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Thesis (MTech (Oceanography))--Cape Peninsula University of Technology, 2009<br>A collaborative study between Marine and Coastal Management (MCM) and the Oceanographic Research Institute (ORI) was initiated in March 2001 to investigate the physical oceanography of Sodwana Bay, South Africa, and the affects on coral communities resident to the area. A bottom-mounted Acoustic Doppler Current Profiler (ADCP) and three Underwater Temperature Recorders (UTR) were deployed to complement the long-term monitoring UTR deployed on Nine-Mile Reef (NMR) in 1994. The study was terminated after 30 months, w

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Keck, Jennifer R. "Changes in Coral Populations on the Northwest Coast of Roatan, Honduras, Subsequent to the 1998 Coral Bleaching Event and Hurricane Mitch." NSUWorks, 2004. http://nsuworks.nova.edu/occ_stuetd/280.

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Long term monitoring of coral reefs on the northwest coast of Roatán, Honduras, has documented significant changes in coral cover over a seven-year period. Twenty photographic quadrats were permanently installed at approximately 12 m depth at each of three study sites located on the northwest coast of Roatán. Photographs were taken at six or twelve month intervals from 1996 through 2003. This observation period included a massive bleaching event which began in late-September of 1998, and Hurricane Mitch which struck in October of the same year. A measurement of projected surface area (PSA, cm2

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17

Hawkridge, Jane M. "Physiological and biochemical defences against environmental stressors in Cnidarians." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262924.

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18

Rubio-Portillo, Esther. "Impact of environmental changes on Oculina patagonica coral holobiont." Doctoral thesis, Universidad de Alicante, 2015. http://hdl.handle.net/10045/46895.

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19

Andras, Tiffany D. "Seaweed allelopathy against coral: surface distribution of seaweed secondary metabolites by imaging mass sepctrometry." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44797.

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Coral reefs are in global decline, with seaweeds increasing as corals decrease. Though seaweeds have been shown to inhibit coral growth, recruitment, and survivorship, the mechanism of these interactions is poorly known. Here we use field experiments to show that contact with four common seaweeds induces bleaching on natural colonies of Porites rus. Controls in contact with inert, plastic mimics of seaweeds did not bleach, suggesting treatment effects resulted from allelopathy rather than shading, abrasion, or physical contact. Bioassay-guided fractionation of the hydrophobic extract from

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20

Buglass, Salome. "A study on the recovery of Tobago's coral reefs following the 2010 mass bleaching event." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51752.

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The rise of ocean temperatures globally has become a grave threat to coral reefs, as it is increasing the severity and frequency of mass coral bleaching events and post-bleaching coral mortality. The continued existence of productive coral reefs will rely on corals’ ability to undergo recovery. In 2010, Tobago’s coral reefs were exposed to severe heat stress leading to mass bleaching of up to 29-60% of colonies at observed sites. This study evaluated the impact of coral bleaching and recovery of coral communities across three major reef systems in Tobago that differ in their exposure to terres

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21

Fujimura, Atsushi. "Effects of Water Flow on Bleaching of Palythoa Caribaeorum." NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/220.

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Water flow is an important abiotic factor for corals and other cnidarians. This study shows how water flow influences bleaching in Palythoa caribaeorum. Colonies were exposed to flow (low = 3 cm s-1, high = 15 cm s-1) in two temperature regimes (low: 26.5°C, which is within natural variability on the reef where specimens were collected; high: 33.5°C, which is 3.5°C above usual summer temperature) in a unidirectional flume for 48 hours. Two sizes (small = 2.3 ± 0.2 cm, large = 7.3 ± 0.4 cm in diameter) were tested in six repeats per flow regime. Bleaching was determined by zooxanthellae count u

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22

Brandt, Marilyn Elizabeth. "Coral Disease Epizootiology in the Florida Keys (U.S.A.) and Cayman Islands (British West Indies), and the Development of the Simulation of Infected Corals Model." Scholarly Repository, 2007. http://scholarlyrepository.miami.edu/oa_dissertations/57.

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Understanding coral disease dynamics within the heterogeneous populations in which they act is critical for predicting how the structure of reefs may change as a result of enzootic or epizootic levels of these important sources of mortality. This work focused on combining field studies and the development and testing of a spatially-explicit, individual-based epizootiological computer model with the aim of gaining a greater understanding of the dynamics and impact of white plague, a significant source of mortality on reef-building corals in the Caribbean region. Field studies focused on the inc

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23

Cowburn, Benjamin. "Coral reefs and climate change in the Indian ocean : a case study of Watamu Marine National Park, Kenya and other Indian Ocean locations." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:22c16252-bdf9-4724-a2f8-dbd4c6fe7f09.

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Coral reefs are arguably the most threatened marine habitat because of multiple anthropogenic stressors degrading the health and resilience of these systems. In the past 20 years there have been increasing observations of mass coral bleaching and mortality associated with increasing water temperatures in the tropics. Reefs provide ecosystem services worth billions of dollars to people living in tropical coastal areas and are the architects of one of the most beautiful structures found on earth. Conserving these habitats is paramount, and conservation planning must contend with climate change a

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24

Ambarsari, Ireng. "The nature and significance of pigments in the symbiotic algae of corals." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391321.

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25

Wettle, Magnus. "Monitoring coral reef bleaching from space : a feasibility study using a physics-based remote sensing approach." Thesis, University of Hull, 2005. http://hydra.hull.ac.uk/resources/hull:14048.

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There is a requirement for effective, worldwide monitoring of the health of coral reef systems, in particular the coral bleaching phenomenon. The transient nature of bleaching events, the extent and remoteness of tropical reefs, and the complex nature of the light field in submerged coral reef environments, requires novel and sophisticated remote sensing-based detection and monitoring approaches. An objective, physics-based approach (SAMBUCA) was developed for retrieving water column concentrations, bathymetry, and bottom substrate composition from remote sensing data on a per-pixel basis. MER

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Yahya, Saleh A. S. "Habitat structure, degradation and management effects on coral reef fish communities." Doctoral thesis, Stockholms universitet, Zoologiska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-62187.

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Coral reefs are among the most diverse and productive ecosystems on earth, and are critical to the survival of tropical marine ecosystems and sustenance of local human populations. However, coral reefs are quite vulnerable to disturbances, both natural and anthropogenic. This thesis looks at how coral reef communities have responded to climactic disturbances, particularly the 1997-98 El Niño Southern Oscillation (ENSO) and subsequent coral bleaching and mortality that affected much of the Indian Ocean, including the coastal waters of Tanzania, where the study was conducted. In particular, it i

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27

Barnes, Brian Burnel. "The Combined Effects of Light and Temperature on Coral Bleaching: A Case Study of the Florida Reef Tract Using Satellite Data." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4863.

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Coral reefs are greatly impacted by the physical characteristics of the water surrounding them. Incidence and severity of mass coral bleaching and mortality events are increasing worldwide due primarily to increased water temperature, but also in response to other stressors. This decline in reef health demands clearer understanding of the compounding effects of multiple stressors, as well as widespread assessment of coral reef health in near-real time. Satellites offer a means by which some of the physical stressors on coral reefs can be measured. The synoptic spatial coverage and high repe

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Tenorio, Arthur de Albuquerque. "Mudanças entre autotrofia e heterotrofia em corais construtores de recifes Mussismilia hispida: abordagem utilizando ácidos graxos marcadores tróficos." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/21/21134/tde-21022017-152905/.

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Os recifes de coral estão entre os ambientes marinhos mais produtivos e ricos em biodiversidade. Esta biodiversidade está em parte associada a complexas estruturas formadas por corais escleractíneos. Apesar da importância ecológica, social e econômica dos recifes de corais, eles são expostos a várias ameaças relacionadas às atividades humanas. Dentre os impactos antrópicos em recifes, o branqueamento, ou perda de zooxantelas, é o mais notável e é diretamente relacionado à mortalidade dos corais. Por possuírem uma associação simbiótica com essas zooxantelas, alguns corais escleractíneos são con

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Kabay, Lystina. "Population Demographics and Sexual Reproduction Potential of the Pillar Coral, Dendrogyra cylindrus, on the Florida Reef Tract." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/433.

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The pillar coral, Dendrogyra cylindrus, has been commonly described as widely distributed, but rare throughout its geographical range in the Caribbean. Having recently been listed as Threatened under the US Endangered Species Act, an understanding of population status is needed to promote species conservation and population recovery. Previous to this study the status of the pillar coral population in the state waters of Florida, U.S.A, was relatively unknown primarily due to few colonies being recorded and no comprehensive summary of population abundance, distribution or health being completed

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Charpentier, Bernadette. "The Role of Colony Size in the Resistance and Tolerance of Scleractinian Corals to Bleaching Caused by Thermal Stress." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30662.

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In 2005 and 2010, high sea surface temperatures caused widespread coral bleaching on Jamaica’s north coast reefs. Three shallow (9m) reef sites were surveyed during each event to quantify the prevalence and intensity of coral bleaching. In October 2005, 29-57% of the colonies surveyed were bleached. By April 2006, 10% of the corals remained pale/partially bleached. Similarly, in October 2010, 23-51% of corals surveyed at the same sites were bleached. By April 2011, 12% of the colonies remained pale/partially bleached. Follow-up surveys revealed low coral mortality following both events, with a

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31

DE, FALCO CHIARA. "Sea Surface Temperature patterns and ocean dynamics in the Maldivian region." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/313702.

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La frequenza degli episodi di coral bleaching è aumentata interrottamente nelle ultime decadi a causa dell’incremento di temperatura registrato nei diversi oceani del pianeta. Nell’Arcipelago Maldiviano, tali eventi sono stati osservati principalmente nei mesi seguenti il picco di episodi El-Niño molto intensi. Il bleaching tuttavia non è stato uniforme e alcuni reef sono stati colpiti solo marginalmente. Ho utilizzato i dati da satellite e un modello oceanico regionale (CROCO) per investigare la variabilità, sia spaziale sia temporale, della temperatura superficiale dell’oceano (SST) e quant

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Putchim, Lalita [Verfasser], Claudio [Akademischer Betreuer] [Gutachter] Richter, and Barbara E. [Gutachter] Brown. "Coral bleaching and recovery in the Thai Andaman Sea / Lalita Putchim ; Gutachter: Richter Claudio, E. Barbara Brown ; Betreuer: Richter Claudio." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1141861992/34.

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Barnes, Brian Burnel. "The Combined Effects of Light and Temperature on Coral Bleaching| A Case Study of the Florida Reef Tract Using Satellite Data." Thesis, University of South Florida, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3604824.

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<p> Coral reefs are greatly impacted by the physical characteristics of the water surrounding them. Incidence and severity of mass coral bleaching and mortality events are increasing worldwide due primarily to increased water temperature, but also in response to other stressors. This decline in reef health demands clearer understanding of the compounding effects of multiple stressors, as well as widespread assessment of coral reef health in near-real time.</p><p> Satellites offer a means by which some of the physical stressors on coral reefs can be measured. The synoptic spatial coverage and

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Otis, Daniel Brooks. "Spatial and Temporal Variability of Remotely Sensed Ocean Color Parameters in Coral Reef Regions." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4379.

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The variability of water-column absorption due to colored dissolved organic matter (CDOM) and phytoplankton in coral reef regions is the focus of this study. Hydrographic and CDOM absorption measurements made on the Bahamas Banks and in Exuma Sound during the spring of 1999 and 2000 showed that values of salinity and CDOM absorption at 440nm were higher on the banks (37.18 psu, 0.06 m^-1), compared to Exuma Sound (37.04 psu, 0.03 m^-1). Spatial patterns of CDOM absorption in Exuma Sound revealed that plumes of CDOM-rich water flow into Exuma Sound from the surrounding banks. To examine absorpt

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Drenkard, Elizabeth Joan. "Exploring the climate change refugia potential of equatorial Pacific coral reefs." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97339.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Global climate models project a 21st century strengthening of the Pacific Equatorial Undercurrent (EUC). The consequent increase in topographic upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching.

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Scucchia, Federica. "Transcriptional profiles inferring thermal stress responses of the coral Oculina patagonica from the Eastern Mediterranean Sea." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17967/.

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During the past several decades, corals worldwide have been dealing with a considerable increase in water temperature due to climate change, which is predicted to increase the frequency of coral bleaching and mass mortality events. Nevertheless, corals show differences in stress susceptibility and they are not all affected evenly. The symbiotic coral Oculina patagonica from the Eastern Mediterranean Sea can thrive in relatively unstable environments and is considered a stress-tolerant species. In this study, baseline expression and temporal dynamics of induction of a 70-kDa heat shock protein

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Bellantuono, Anthony John. "Acclimatization of the Tropical Reef Coral Acropora millepora to Hyperthermal Stress." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/1005.

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The demise of reef-building corals potentially lies on the horizon, given ongoing climate change amid other anthropogenic environmental stressors. If corals cannot acclimatize or adapt to changing conditions, dramatic declines in the extent and health of the living reefs are expected within the next half century. The primary and proximal global threat to corals is climate change. Reef-building corals are dependent upon a nutritional symbiosis with photosynthetic dinoflagellates belonging to the group Symbiodinium. The symbiosis between the cnidarian host and algal partner is a stress-sensitive

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Bonalume, Clauber. "Utilizaçao de tecnicas fotometricas para estudo do branqueamento e da quantidade de algas simbiontes em colonias coralinas." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250453.

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Orientador: Ines Joekes<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-09T00:07:10Z (GMT). No. of bitstreams: 1 Bonalume_Clauber_M.pdf: 1295510 bytes, checksum: 20c20d40e0b0a19af56f06a1076fb4cb (MD5) Previous issue date: 2006<br>Resumo: Corais marinhos do mundo inteiro estão ameaçados pelas alterações climáticas que vêm acontecendo nas duas últimas décadas. O aquecimento da superfície terrestre associado à intensificação do fenômeno El Niño têm causado prejuízos à saúde dos corais marinhos com intensidade, extensão e

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Pratte, Zoe A. "Investigating the Driving Mechanisms Behind Differences in Bleaching and Disease Susceptibility Between Two Scleractinian Corals, Pseudodiploria Strigosa and Diploria Labyrinthiformis." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2217.

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Disease and bleaching are two conditions which commonly lead to coral death. Among coral species, susceptibility to disease and bleaching is variable, and Pseudodiploria strigosa tends to be diseased more than Diploria labyrinthiformis, while D. labyrinthiformis bleaches more readily. The focus of this dissertation was to investigate and compare multiple components of these two coral species, and identify how they may relate to disease and bleaching resistance. Compenetnts examined included the surface mucopolysacharide layer (SML) thickness, gene expression, microbial associates, and a white

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Grasso, Peter T. "Coral Genotype Influence on Growth and Stress Resistance in Acropora cervicornis: Investigating Potential Energy Tradeoffs." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/404.

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Over the last few decades coral reefs have faced unprecedented declines in health due to natural and anthropogenic sources. Until recently few studies have examined genotypic variation of growth and thermal stress resistance in Acropora cervicornis. This study aims to assess the potential for energy trade-offs between growth and thermal stress resistance by following 120 coral fragments from 12 genotypes of Acropora cervicornis over the course of 15 months to determine average growth rates for each genotype. Following the completion of the growth observation a bleaching event occurred in the l

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Rosing, Trina. "Using Structure-from-Motion Technology to Compare Coral Coverage on Restored vs. Unrestored Reefs." Wittenberg University Honors Theses / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1623948204369104.

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Paul, Nicole Christine. "Variable Recovery of the Massive Coral, Porites Lobata, in Response to El Nino-Southern Oscillation Events at Devil's Crown, Galapagos, Ecuador." NSUWorks, 2012. http://nsuworks.nova.edu/occ_stuetd/93.

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Porites lobata is an important reef building coral in the tropical eastern Pacific and the dominant Porites species in the Galápagos archipelago. Following the 1982-83 El Niño-Southern Oscillation the Galápagos Islands experienced 97-99% coral mortality, leaving many areas throughout the archipelago denuded of corals. Because very few long term assessments have been conducted on the growth and resilience of P. lobata to natural disturbances in the Galápagos Islands (Glynn et al., 2001; Glynn et al., 2009), benthic surveys were performed on a uniquely dense aggregation of P. lobata colonies at

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Mendez-Ferrer, Natasha. "Photic Stress in Symbiont-Bearing Reef Organisms: Analyses of Photosynthetic Performance." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6322.

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Photo-oxidative stress is one of the key factors that can induce bleaching in reef organisms. With the decline of coral reefs and recurrent bleaching events, many studies have focused on understanding the mechanism behind this phenomenon. Two of the hypotheses that explain how the photosynthetic performance of the symbiont is affected and influences bleaching are: (1) disruption of the photosynthetic pathway by direct damage to the photosystem II (PSII), and (2) by inhibition of the Calvin-Benson cycle. In this dissertation I examine different aspects of photosynthetic performance in symbiont-

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Reynolds, David A. "The effects of the red tide producing dinoflagellate, Karenia brevis, and associated brevetoxins on viability and sublethal stress responses in scleractinian coral: a potential regional stressor to coral reefs." UNF Digital Commons, 2018. https://digitalcommons.unf.edu/etd/829.

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Coral cover is in decline on a global scale, with increased mortality events being attributed to a number of global and regional stressors. While the impacts of global stressors (e.g. sea surface temperature rise, ocean acidification) are well documented, there is growing interest in identifying and understanding the impacts of regional stressors. The reason for this change in focus is that regional stressors can often work in combination, sometimes synergistically, with global stressors and that stressors on a regional scale tend to be more easily mitigated by management practices. One region

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Souza, Izabel Maria Matos de. "Avalia??o da cobertura e monitoramento do branqueamento de corais nos recifes de Maracaja?/RN." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14046.

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Made available in DSpace on 2014-12-17T14:33:09Z (GMT). No. of bitstreams: 1 IzabelMMS_DISSERT.pdf: 5861857 bytes, checksum: 79bb0912ed83687a1e7f40e3d441ee7c (MD5) Previous issue date: 2012-06-18<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>Coral bleaching has been increasingly the focus of research around the world since the early 1980s, when it was verified to be increasing in frequency, intensity and amount of areas affected. The phenomenon has been recorded since 1993, associated with elevation of the sea surface temperature due to El Ni?os and water thermal anomal

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Schoepf, Verena. "Physiology and Biogeochemistry of Corals Subjected to Repeat Bleaching and Combined Ocean Acidification and Warming." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1376923711.

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Meunier, Valentine. "Interactions entre coraux scléractiniaires, les diazotrophes planctoniques et le picoplancton dans le contexte du changement climatique." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS332.

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Les coraux constructeurs de récifs, sont à la fois autotrophes (ils vivent en symbiose avec des microalgues de la famille des Symbiodiniaceae) et hétérotrophes, c’est à dire qu’ils sont capables de se nourrir sur une gamme de proies allant de la matière organique dissoute, au plancton. Les récifs coralliens sont menacés par le réchauffement climatique, qui perturbe la symbiose entre les coraux et leurs symbiontes, entraînant un blanchissement massif des coraux. Les diazotrophes planctoniques, capables de fixer le diazote (N2) atmosphérique en azote (N) biodisponible (l’ammonium, NH4+), et de t

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Underwood, Linda. "Awareness and action : coral bleaching : research study on changed behavior upon receiving information concerning coral bleaching effects." Master's thesis, 2019. http://hdl.handle.net/10362/68458.

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Dissertation presented as the partial requirement for obtaining a Master's degree in Statistics and Information Management, specialization in Information Analysis and Management<br>Coral reefs are living organisms that act as an important ecosystem for many different kinds of invertebrates and vertebrates. They are essential for marine life to survive yet also provide many benefits for human life as well. “Coral bleaching” is caused by climate change due to the increase in temperature in the ocean’s water which starves the organism and what remains is only its white skeleton. This is one of t

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Liao, Chiu-Yeh, and 廖萩燁. "Effects of temperature on stony coral bleaching." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/36285925567978835071.

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碩士<br>國立中山大學<br>海洋科學系研究所<br>102<br>Events of high temperature causing large scale coral bleaching have been reported worldwide in last several decades. However, the role of low temperature, temperature fluctuation and other environmental factors in relation to coral bleaching is still insufficient. Here, the effects of temperature (high, low and fluctuation), typhoons and climate indices on stony coral bleaching were investigated seasonally at INF and EFF of Kenting, Taiwan, during May 2005 - May 2013. Based on the records of 3 fixed transect lines in each site, the branch Acropora (40.7 ± 33

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Morris, Luke Aaron. "The role of nutrients in coral bleaching." Thesis, 2021. https://researchonline.jcu.edu.au/75350/1/JCU_75350_Morris_2021_Thesis.pdf.

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Luke Morris investigated the role of nutrients in coral bleaching. While he found that environmental nutrients do not substantially influence heat tolerance, nutritional destabilisation of the coral-algal symbiosis was integral to explaining coral bleaching and mortality. These results inform the management and understanding of mass coral bleaching and mortality events.

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