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Journal articles on the topic 'Coral bleaching'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Aulia, Qinthan Azzahra, and Ni Wayan Purnama Sari. "CORAL BLEACHING, KARANG HIDUP ATAU MATI?" OSEANA 45, no. 2 (2020): 13–22. http://dx.doi.org/10.14203/oseana.2020.vol.45no.2.55.

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Coral reef ecosystem is one of the coastal marine ecosystems in tropical waters. Coral reef ecosystems are vulnerable to damage mainly due to environmental factors. A fairly popular event of coral reef damage is coral bleaching. Mass coral bleaching is generally caused by changes in Sea Surface Temperature (SST). The condition of corals that have bleaching is different from the condition of corals that have died. The recovery process from coral bleaching phenomena can be effectively carried out if the surrounding environment is supportive and sea surface temperature return stable. The phenomen

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2

Zheng, Qinyu. "Exploration on Environmental Causes of Coral Bleaching." Journal of Advances in Engineering and Technology 1, no. 3 (2024): 7–20. http://dx.doi.org/10.62177/jaet.v1i3.84.

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In recent years, since global warming and human activities have contributed to massive coral bleaching events, it is significant to seek for the causations and predict the rate of coral bleaching to mitigate the influence and to decelerate bleachi,ng rate. The study focused on analyzing coral bleaching database from 1980 to 2020, revealing sea surface temperature anomaly (SSTA) and temperature cumulative thermal stress (TSA_DHW) are the major contributor of corals bleaching. In addition, climatic factors such as wind speed and cyclone frequency also conduce to coral bleaching. Resulted from pr

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3

Pinzón, Jorge H., Bishoy Kamel, Colleen A. Burge, et al. "Whole transcriptome analysis reveals changes in expression of immune-related genes during and after bleaching in a reef-building coral." Royal Society Open Science 2, no. 4 (2015): 140214. http://dx.doi.org/10.1098/rsos.140214.

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Climate change is negatively affecting the stability of natural ecosystems, especially coral reefs. The dissociation of the symbiosis between reef-building corals and their algal symbiont, or coral bleaching, has been linked to increased sea surface temperatures. Coral bleaching has significant impacts on corals, including an increase in disease outbreaks that can permanently change the entire reef ecosystem. Yet, little is known about the impacts of coral bleaching on the coral immune system. In this study, whole transcriptome analysis of the coral holobiont and each of the associate componen

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Marangoni, Laura Fernandes de Barros, Miguel Mies, Arthur Z. Güth, et al. "Peroxynitrite Generation and Increased Heterotrophic Capacity Are Linked to the Disruption of the Coral–Dinoflagellate Symbiosis in a Scleractinian and Hydrocoral Species." Microorganisms 7, no. 10 (2019): 426. http://dx.doi.org/10.3390/microorganisms7100426.

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Ocean warming is one of the greatest global threats to coral reef ecosystems; it leads to the disruption of the coral–dinoflagellate symbiosis (bleaching) and to nutrient starvation, because corals mostly rely on autotrophy (i.e., the supply of photosynthates from the dinoflagellate symbionts) for their energy requirements. Although coral bleaching has been well studied, the early warning signs of bleaching, as well as the capacity of corals to shift from autotrophy to heterotrophy, are still under investigation. In this study, we evaluated the bleaching occurrence of the scleractinian coral M

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Bonesso, Joshua Louis, William Leggat, and Tracy Danielle Ainsworth. "Exposure to elevated sea-surface temperatures below the bleaching threshold impairs coral recovery and regeneration following injury." PeerJ 5 (August 18, 2017): e3719. http://dx.doi.org/10.7717/peerj.3719.

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Elevated sea surface temperatures (SSTs) are linked to an increase in the frequency and severity of bleaching events due to temperatures exceeding corals’ upper thermal limits. The temperatures at which a breakdown of the coral-Symbiodinium endosymbiosis (coral bleaching) occurs are referred to as the upper thermal limits for the coral species. This breakdown of the endosymbiosis results in a reduction of corals’ nutritional uptake, growth, and tissue integrity. Periods of elevated sea surface temperature, thermal stress and coral bleaching are also linked to increased disease susceptibility a

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Munasik, Agus Sabdono, Parulian M. Benjamin, D. Haryanti, Anindya Wirasatriya, and Isai Yusidarta. "Rapid assessment of coral bleaching induced by 2023 ENSO in Karimunjawa, Central Java." IOP Conference Series: Earth and Environmental Science 1496, no. 1 (2025): 012029. https://doi.org/10.1088/1755-1315/1496/1/012029.

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Abstract The El Niño–Southern Oscillation (ENSO) event induces significant sea-level and temperature changes, which can severely impact the coral reef ecosystem. El Nino has affected Indonesia since June 2023, intensifying from late 2023 through April 2024, and has the potential to cause coral bleaching events. Karimunjawa is a vital marine protected area in the Java Sea, which has high coral diversity and is potentially threatened by mass bleaching. To assess the extent of coral bleaching in Karimunjawa waters, a rapid survey was conducted in early February 2024, focusing on the eastern water

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Wall, M., L. Putchim, G. M. Schmidt, C. Jantzen, S. Khokiattiwong, and C. Richter. "Large-amplitude internal waves benefit corals during thermal stress." Proceedings of the Royal Society B: Biological Sciences 282, no. 1799 (2015): 20140650. http://dx.doi.org/10.1098/rspb.2014.0650.

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Tropical scleractinian corals are particularly vulnerable to global warming as elevated sea surface temperatures (SSTs) disrupt the delicate balance between the coral host and their algal endosymbionts, leading to symbiont expulsion, mass bleaching and mortality. While satellite sensing of SST has proved a reliable predictor of coral bleaching at the regional scale, there are large deviations in bleaching severity and mortality on the local scale that are poorly understood. Here, we show that internal waves play a major role in explaining local coral bleaching and mortality patterns in the And

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Moriarty, Tess, William Leggat, Scott F. Heron, Rosemary Steinberg, and Tracy D. Ainsworth. "Bleaching, mortality and lengthy recovery on the coral reefs of Lord Howe Island. The 2019 marine heatwave suggests an uncertain future for high-latitude ecosystems." PLOS Climate 2, no. 4 (2023): e0000080. http://dx.doi.org/10.1371/journal.pclm.0000080.

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Oceanic thermal anomalies are increasing in both frequency and strength, causing detrimental impacts to coral reef communities. Water temperatures beyond the corals optimum threshold causeing coral bleaching and mass mortality, impacting our global coral reef ecosystems, including marginal high-latitude reefs. Coral bleaching and mortality were observed at the southernmost coral reef, Lord Howe Island Marine Park, during the summer of 2019, coinciding with anomalously high sea surface temperatures across the reef system from January-April. Here we document the extent of coral impacts within th

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González-Espinosa, Pedro C., and Simon D. Donner. "Cloudiness delays projected impact of climate change on coral reefs." PLOS Climate 2, no. 2 (2023): e0000090. http://dx.doi.org/10.1371/journal.pclm.0000090.

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The increasing frequency of mass coral bleaching and associated coral mortality threaten the future of warmwater coral reefs. Although thermal stress is widely recognized as the main driver of coral bleaching, exposure to light also plays a central role. Future projections of the impacts of climate change on coral reefs have to date focused on temperature change and not considered the role of clouds in attenuating the bleaching response of corals. In this study, we develop temperature- and light-based bleaching prediction algorithms using historical sea surface temperature, cloud cover fractio

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10

Beatty, Deanna S., Jinu Mathew Valayil, Cody S. Clements, Kim B. Ritchie, Frank J. Stewart, and Mark E. Hay. "Variable effects of local management on coral defenses against a thermally regulated bleaching pathogen." Science Advances 5, no. 10 (2019): eaay1048. http://dx.doi.org/10.1126/sciadv.aay1048.

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Bleaching and disease are decimating coral reefs especially when warming promotes bleaching pathogens, such as Vibrio coralliilyticus. We demonstrate that sterilized washes from three common corals suppress V. coralliilyticus but that this defense is compromised when assays are run at higher temperatures. For a coral within the ecologically critical genus Acropora, inhibition was 75 to 154% greater among colonies from coral-dominated marine protected areas versus adjacent fished areas that were macroalgae-dominated. Acropora microbiomes were more variable within fished areas, suggesting that r

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McCarthy, Orion S., Morgan Winston Pomeroy, and Jennifer E. Smith. "Corals that survive repeated thermal stress show signs of selection and acclimatization." PLOS ONE 19, no. 7 (2024): e0303779. http://dx.doi.org/10.1371/journal.pone.0303779.

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Climate change is transforming coral reefs by increasing the frequency and intensity of marine heatwaves, often leading to coral bleaching and mortality. Coral communities have demonstrated modest increases in thermal tolerance following repeated exposure to moderate heat stress, but it is unclear whether these shifts represent acclimatization of individual colonies or mortality of thermally susceptible individuals. For corals that survive repeated bleaching events, it is important to understand how past bleaching responses impact future growth potential. Here, we track the bleaching responses

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12

Zheng, Jiamei. "Coral Bleaching Situation and Influencing Factors in Recent Decade." Transactions on Environment, Energy and Earth Sciences 3 (November 26, 2024): 366–72. https://doi.org/10.62051/prmbhj29.

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Coral bleaching is a very common but urgent problem that needs to be solved today. Coral bleaching due to global warming and other reasons is the greatest threat to the coral ecology system today. Coral reefs not only have great economic value but also have important ecological meaning. Protecting coral ecology is also one link to practicing global sustainable development. Research on bleaching events in recent years has shown that corals have different bleaching conditions under different environmental factors. Besides effects of exogenous factors such as the surrounding environment, there ar

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13

Rivera, Francesca Deighl, Ginell Elyza Buenavista, Ayin Tamondong, and Ariel Blanco. "Coral Bleaching Detection Using PRISMA Hyperspectral Satellite Imagery in Calatagan, Batangas." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences X-5-2024 (November 11, 2024): 165–72. http://dx.doi.org/10.5194/isprs-annals-x-5-2024-165-2024.

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Abstract. Coral bleaching arises due to stress from warming seas and pollution. Several studies on bleaching detection utilize multispectral imagery, due to data availability. In this study, the usage of PRISMA hyperspectral data imagery was assessed for coral bleaching detection in Calatagan, Batangas, and sea surface temperature (SST) for confirming bleaching occurrence. In-situ measurements were gathered for spectral data of live and bleached corals, and a collaborative qualitative data interview with a coral bleach patroller and municipal office was conducted to gain further information ab

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Donovan, Mary K., Thomas C. Adam, Andrew A. Shantz, et al. "Nitrogen pollution interacts with heat stress to increase coral bleaching across the seascape." Proceedings of the National Academy of Sciences 117, no. 10 (2020): 5351–57. http://dx.doi.org/10.1073/pnas.1915395117.

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Climate change is increasing the frequency and magnitude of temperature anomalies that cause coral bleaching, leading to widespread mortality of stony corals that can fundamentally alter reef structure and function. However, bleaching often is spatially variable for a given heat stress event, and drivers of this heterogeneity are not well resolved. While small-scale experiments have shown that excess nitrogen can increase the susceptibility of a coral colony to bleaching, we lack evidence that heterogeneity in nitrogen pollution can shape spatial patterns of coral bleaching across a seascape.

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15

Jury, Christopher P., Brian M. Boeing, Henry Trapido-Rosenthal, Ruth D. Gates, and Robert J. Toonen. "Nitric oxide production rather than oxidative stress and cell death is associated with the onset of coral bleaching in Pocillopora acuta." PeerJ 10 (June 1, 2022): e13321. http://dx.doi.org/10.7717/peerj.13321.

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Elevated seawater temperatures associated with climate change lead to coral bleaching. While the ultimate causes of bleaching are well understood, the proximate physiological mechanisms underlying the bleaching response are not as well defined. Here we measured nitric oxide synthase activity, oxidative stress, and cell death in algal symbionts (Symbiodinaceae) freshly isolated from the reef-building coral Pocillopora acuta collected in the field under natural non-bleaching conditions and from corals experimentally exposed to elevated temperatures. Nitric oxide synthase activity in the algal sy

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16

SUMAYED, SYED MUHAMMED, and CHUN HONG TAN. "CORAL BLEACHING IN PENINSULAR MALAYSIA: A DECADE OF STUDY." JOURNAL OF SUSTAINABILITY SCIENCE AND MANAGEMENT 19, no. 12 (2024): 192–218. https://doi.org/10.46754/jssm.2024.12.012.

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Globally, coral bleaching events are increasing both in frequency and intensity, and are usually associated with Sea Surface Temperature (SST) anomalies. The objective of this paper is to review coral bleaching trends and its consequences in Peninsular Malaysia’s waters over the past decade with the help of scarce government and reef monitoring program reports and published journal papers. Malaysia has experienced two Mass Bleaching Events (MBE) in the past decade—in 2010 (2nd global MBE) and between 2014 and 2017 (3rd global MBE)—it was estimated up to 5% to 6% of corals experienced mortality

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Mhalaskar, Divya, Nandini Ray Chaudhury, and Chandra Mohan Bhatt. "Assessment of Bleaching Stress Vulnerability of Lakshadweep Islands using Google Earth Engine (GEE)." Journal of Geomatics 18, no. 2 (2024): 42–54. http://dx.doi.org/10.58825/jog.2024.18.2.135.

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Coral reefs, among the Earth’s most diverse and valuable ecosystems, face unprecedented challenges due to climate change. Coral bleaching is a phenomenon wherein corals lose their symbiotic zooxanthellae owing to various stressors, leading to a whitening effect of the coral tissues. In recent decades, climate change has intensified coral bleaching events. Multiple stressors, including elevated Sea Surface Temperature (SST), extreme irradiance levels, and various biotic and abiotic factors trigger bleaching events. Coral bleaching is primarily driven by thermal stress caused by elevated SSTs. C

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18

Conti-Jerpe, Inga E., Philip D. Thompson, Cheong Wai Martin Wong, et al. "Trophic strategy and bleaching resistance in reef-building corals." Science Advances 6, no. 15 (2020): eaaz5443. http://dx.doi.org/10.1126/sciadv.aaz5443.

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Ocean warming increases the incidence of coral bleaching, which reduces or eliminates the nutrition corals receive from their algal symbionts, often resulting in widespread mortality. In contrast to extensive knowledge on the thermal tolerance of coral-associated symbionts, the role of the coral host in bleaching patterns across species is poorly understood. Here, we applied a Bayesian analysis of carbon and nitrogen stable isotope data to determine the trophic niche overlap between corals and their symbionts and propose benchmark values that define autotrophy, heterotrophy, and mixotrophy. Th

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Ben-Haim, Yael, Maya Zicherman-Keren, and Eugene Rosenberg. "Temperature-Regulated Bleaching and Lysis of the Coral Pocillopora damicornis by the Novel Pathogen Vibrio coralliilyticus." Applied and Environmental Microbiology 69, no. 7 (2003): 4236–42. http://dx.doi.org/10.1128/aem.69.7.4236-4242.2003.

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ABSTRACT Coral bleaching is the disruption of symbioses between coral animals and their photosynthetic microalgal endosymbionts (zooxanthellae). It has been suggested that large-scale bleaching episodes are linked to global warming. The data presented here demonstrate that Vibrio coralliilyticus is an etiological agent of bleaching of the coral Pocillopora damicornis. This bacterium was present at high levels in bleached P. damicornis but absent from healthy corals. The bacterium was isolated in pure culture, characterized microbiologically, and shown to cause bleaching when it was inoculated

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Azizah, Disya Shafa, Meutia Samira Ismet, and Nadya Cakasana. "Potential of antagonistic activity from associated bacteria from healthy and bleaching acropora corals of Blitar Waters, East Java, Indonesia." BIO Web of Conferences 106 (2024): 05002. http://dx.doi.org/10.1051/bioconf/202410605002.

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Global warming leads to high coral bleaching phenomena in marine ecosystems. The bleach condition of corals can cause a disease that is enhanced by opportunistic or pathogenic microorganisms. This research aimed to investigate the antagonistic interactions between healthy and bleached coral-associated bacteria. Isolation of coral-associated bacteria was carried out using the spread plate method in half-strength Zobell 2216E medium. Antagonistic activity was observed using a double-layer method, with each layer of medium inoculated with healthy or bleached coral-associated bacteria. The interac

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Wu, Ke, Fan Yang, Huize Liu, and Ying Xu. "Detection of Coral Reef Bleaching by Multitemporal Sentinel-2 Data Using the PU-Bagging Algorithm: A Feasibility Study at Lizard Island." Remote Sensing 16, no. 13 (2024): 2473. http://dx.doi.org/10.3390/rs16132473.

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Coral reef bleaching events have become more frequent all over the world and pose a serious threat to coral reef ecosystems. Therefore, there is an urgent need for better detection of coral reef bleaching in a time- and cost-saving manner. In recent years, remote sensing technology has often been utilized and gained recognition for coral reef bleaching detection. However, bleaching corals in the water always have weak spectral change signals, causing difficulties in using remote sensing data. Additionally, uneven change samples make it challenging to adequately capture the details of coral ree

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Speelman, P. Elias, Michael Parger, and Verena Schoepf. "Divergent recovery trajectories of intertidal and subtidal coral communities highlight habitat-specific recovery dynamics following bleaching in an extreme macrotidal reef environment." PeerJ 11 (September 15, 2023): e15987. http://dx.doi.org/10.7717/peerj.15987.

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Coral reefs face an uncertain future punctuated by recurring climate-induced disturbances. Understanding how reefs can recover from and reassemble after mass bleaching events is therefore important to predict their responses and persistence in a rapidly changing ocean. On naturally extreme reefs characterized by strong daily temperature variability, coral heat tolerance can vary significantly over small spatial gradients but it remains poorly understood how this impacts bleaching resilience and recovery dynamics, despite their importance as resilience hotspots and potential refugia. In the mac

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DeCarlo, Thomas M. "The past century of coral bleaching in the Saudi Arabian central Red Sea." PeerJ 8 (October 23, 2020): e10200. http://dx.doi.org/10.7717/peerj.10200.

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Accurate knowledge of the spatial and temporal patterns of coral bleaching is essential both for understanding how coral reef ecosystems are changing today and forecasting their future states. Yet, in many regions of the world, the history of bleaching is poorly known, especially prior to the late 20th century. Here, I use the information preserved within skeleton cores of long-lived Porites corals to reconstruct the past century of bleaching events in the Saudi Arabian central Red Sea. In these cores, skeletal “stress bands”—indicative of past bleaching—captured known bleaching events that oc

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García-Sais, Jorge R., Stacey M. Williams, and Ali Amirrezvani. "Mortality, recovery, and community shifts of scleractinian corals in Puerto Rico one decade after the 2005 regional bleaching event." PeerJ 5 (July 25, 2017): e3611. http://dx.doi.org/10.7717/peerj.3611.

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This work analyzes the mortality, recovery, and shifts in the composition of scleractinian corals from Puerto Rico one decade after the 2005 regional coral bleaching event. Temporal and spatial patterns of coral community structure were examined using a stratified, non-random sampling approach based on five permanent transects per reef at 16 reef stations. A negative correlation between percent coral cover loss and light attenuation coefficient (Kd490) was observed, suggesting that light attenuation, as influenced by water turbidity and depth, played a major role in coral protection during the

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Gierz, Sarah, Tracy D. Ainsworth, and William Leggat. "Diverse symbiont bleaching responses are evident from 2-degree heating week bleaching conditions as thermal stress intensifies in coral." Marine and Freshwater Research 71, no. 9 (2020): 1149. http://dx.doi.org/10.1071/mf19220.

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Coral bleaching is the dysfunction of the coral–algal endosymbiosis and is characterised as a loss of Symbiodiniaceae cells from host tissues or the loss of photosynthetic pigments. This breakdown of symbiosis occurs as a result of elevated temperature beyond the organism’s thermal threshold. The thermal tipping points within the symbiosis have not yet been well resolved, and the mechanisms underlying the various cellular processes of the corals bleaching response remain unknown. This study characterised the cellular responses of the symbiont Cladocopium sp. (syn. clade C3) within the host cor

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Osinga, Ronald, Emma van Veenendaal, Daniëlle S. L. Geschiere, Britt J. A. van Herpen, and Saskia Oosterbroek. "Irradiance Level Only Moderately Affects Thermal Bleaching in the Stony Coral Stylophora pistillata." Oceans 6, no. 2 (2025): 32. https://doi.org/10.3390/oceans6020032.

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Light is considered an important co-factor in causing thermal bleaching in photosymbiotic corals. To quantify the effects of light strength on thermal bleaching, colonies of the stony coral Stylophora pistillata were experimentally subjected to a gradual increase in temperature (1 °C per 4 days) under two irradiance levels: 100 and 500 µmole quanta m−2 s−1. Corals kept under the same irradiance levels at a constant temperature of 26 °C were used as controls. The apparent photochemical yield ΔF/Fm′ of Photosystem II of the coral symbionts was monitored daily as an indicator for the onset of the

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Sutthacheep, Makamas, Charernmee Chamchoy, Sittiporn Pengsakun, Wanlaya Klinthong, and Thamasak Yeemin. "Assessing the Resilience Potential of Inshore and Offshore Coral Communities in the Western Gulf of Thailand." Journal of Marine Science and Engineering 7, no. 11 (2019): 408. http://dx.doi.org/10.3390/jmse7110408.

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Coral reefs in the Gulf of Thailand have experienced severe coral bleaching events and anthropogenic disturbances during the last two decades. This study assessed the resilience potential of coral communities at Ko Losin offshore reef sites and Mu Ko Chumphon nearshore coral reefs, in the south of Thailand, by conducting field surveys on the live coral cover, hard substratum composition and diversity and density of juvenile corals. Most study sites had higher percentages of live coral cover compared to dead coral cover. Some inshore and offshore reef sites showed low resilience to coral bleach

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Lafratta, A., J. Fromont, P. Speare, and C. H. L. Schönberg. "Coral bleaching in turbid waters of north-western Australia." Marine and Freshwater Research 68, no. 1 (2017): 65. http://dx.doi.org/10.1071/mf15314.

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We report severe bleaching in a turbid water coral community in north-western Australia. Towed still imagery was used for a benthic survey near Onslow in March 2013 to assess thermal stress in hard and soft corals, finding 51–68% of all corals fully bleached in 10–15-m water depth. Tabulate or foliaceous Turbinaria was the locally most abundant hard coral (46%), followed by massives such as faviids and poritids (25%) and encrusting coral (12%), thus over 80% of the local corals could be considered to be bleaching resistant. All coral groups were bleached in similar proportions (massive hard co

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Alwi, Djainudin, Iswandi Wahab, and Muh Irsan. "Coral Bleaching in Tanjung Dehegila Water, Morotai Island District." East Asian Journal of Multidisciplinary Research 2, no. 2 (2023): 771–79. http://dx.doi.org/10.55927/eajmr.v2i2.3188.

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This study aims to identify the types of corals that experience bleaching and the factors that cause it. This research was conducted in Tanjung Dehegila Waters, Morotai Island Regency, in August-September 2021. Data was collected using the Line Intercept Transect (LIT) and Photo Line Intercept Transect (LIT) methods. Observational data were analyzed descriptively. The identification results of coral bleaching species were dominated by the genus Acropora (branching corals), where species were found to be bleaching in almost all research stations, while coral bleaching in Tanjung Dehegila waters

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Wright, Rachel M., Marie E. Strader, Heather M. Genuise, and Mikhail Matz. "Effects of thermal stress on amount, composition, and antibacterial properties of coral mucus." PeerJ 7 (April 29, 2019): e6849. http://dx.doi.org/10.7717/peerj.6849.

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The surface mucus layer of reef-building corals supports feeding, sediment clearing, and protection from pathogenic invaders. As much as half of the fixed carbon supplied by the corals’ photosynthetic symbionts is incorporated into expelled mucus. It is therefore reasonable to expect that coral bleaching (disruption of the coral–algal symbiosis) would affect mucus production. Since coral mucus serves as an important nutrient source for the entire reef community, this could have substantial ecosystem-wide consequences. In this study, we examined the effects of heat stress-induced coral bleachin

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Kennedy, Emma V., Julie Vercelloni, Benjamin P. Neal, et al. "Coral Reef Community Changes in Karimunjawa National Park, Indonesia: Assessing the Efficacy of Management in the Face of Local and Global Stressors." Journal of Marine Science and Engineering 8, no. 10 (2020): 760. http://dx.doi.org/10.3390/jmse8100760.

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Karimunjawa National Park is one of Indonesia’s oldest established marine parks. Coral reefs across the park are being impacted by fishing, tourism and declining water quality (local stressors), as well as climate change (global pressures). In this study, we apply a multivariate statistical model to detailed benthic ecological datasets collected across Karimunjawa’s coral reefs, to explore drivers of community change at the park level. Eighteen sites were surveyed in 2014 and 2018, before and after the 2016 global mass coral bleaching event. Analyses revealed that average coral cover declined

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MATTAN-MOORGAWA, SUSHMA, SOONIL DDV RUGHOOPUTH, and RANJEET BHAGOOLI. "Variable PSII functioning and bleaching conditions of tropical scleractinian corals pre-and post-bleaching event." Ocean Life 2, no. 1 (2018): 1–10. http://dx.doi.org/10.13057/oceanlife/o020101.

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Mattan-Moorgawa S, Rughooputh SDDV, Bhagooli R. 2017. Variable PSII functioning and bleaching conditions of tropical scleractinian corals pre-and post-bleaching event. Ocean Life 1: 1-10. This study compared pre-bleaching and post-bleaching conditions of eight reef-building corals, Acropora cytherea, Acropora hyacynthus, Acropora muricata, Acropora sp., Pocillopora damicornis, Pocillopora eydouxi, Galaxea fascicularis and Fungia sp., in terms of visual coloration (non-bleached (NB), pale (P), partially bleached (PB) and bleached (B)) and chlorophyll fluorescence yield at photosystem II (PSII))

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Morikawa, Megan K., and Stephen R. Palumbi. "Using naturally occurring climate resilient corals to construct bleaching-resistant nurseries." Proceedings of the National Academy of Sciences 116, no. 21 (2019): 10586–91. http://dx.doi.org/10.1073/pnas.1721415116.

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Ecological restoration of forests, meadows, reefs, or other foundational ecosystems during climate change depends on the discovery and use of individuals able to withstand future conditions. For coral reefs, climate-tolerant corals might not remain tolerant in different environments because of widespread environmental adjustment of coral physiology and symbionts. Here, we test if parent corals retain their heat tolerance in nursery settings, if simple proxies predict successful colonies, and if heat-tolerant corals suffer lower growth or survival in normal settings. Before the 2015 natural ble

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Karnan, Karnan. "Impact of Coral Bleaching on Coral Reef Fishes in Sekotong Bay, West Lombok Regency." Jurnal Penelitian Pendidikan IPA 8, no. 6 (2022): 2670–74. http://dx.doi.org/10.29303/jppipa.v8i6.1576.

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Coral reef fish is one of the main components making up the ecosystem of coral reefs. There is a strong mutual dependence between reef-forming corals and fish that inhabit coral reefs. Various fish species use coral as a food source and habitat. This article describes the impact of coral bleaching on the diversity, density, and biomass of coral reef fish in the waters of Sekotong Bay, West Lombok. Underwater visual census (UVC) methods are used to obtain data on species, the number of individuals per species, and fish size at transect length 70 meters and width 5 meters. Simple linear regressi

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Johan, O., E. Mustikasari, A. Heriati, et al. "Coral resistance in coral bleaching events in Lombok waters, Indonesia." IOP Conference Series: Earth and Environmental Science 1163, no. 1 (2023): 012005. http://dx.doi.org/10.1088/1755-1315/1163/1/012005.

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Abstract The western area of Lombok Island is a tourist area that has rich underwater biodiversity in coral reefs ecosystem because of the flow path of Indonesia Trough Flow which carries nutrients continuously through the Lombok Strait. Damage that occurs around the Western area of Lombok Island is caused by climate change and community waste disposal activities that cause coral bleaching. An increase of 1.23°C Sea Surface Temperature occurred in Sekotong on February 2016 and leads to the coral bleaching event on the area. The research was conducted by using the underwater photo transect meth

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McLachlan, Rowan H., Kerri L. Dobson, Emily R. Schmeltzer, Rebecca Vega Thurber, and Andréa G. Grottoli. "A review of coral bleaching specimen collection, preservation, and laboratory processing methods." PeerJ 9 (July 8, 2021): e11763. http://dx.doi.org/10.7717/peerj.11763.

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Under current climate warming predictions, the future of coral reefs is dire. With projected coral reef decline, it is likely that coral specimens for bleaching research will increasingly become a more limited resource in the future. By adopting a holistic approach through increased collaborations, coral bleaching scientists can maximize a specimen’s investigative yield, thus reducing the need to remove more coral material from the reef. Yet to expand a specimen’s utility for additional analytic methods, information on how corals are collected is essential as many methods are variably sensitiv

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Mayfield, Anderson B., and Chiahsin Lin. "Field-Testing a Proteomics-Derived Machine-Learning Model for Predicting Coral Bleaching Susceptibility." Applied Sciences 13, no. 3 (2023): 1718. http://dx.doi.org/10.3390/app13031718.

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Given the widespread decline of coral reefs, temperature-focused models have been generated to predict when and where bleaching events may occur (e.g., Coral Reef Watch). Although such algorithms are adept at forecasting the onset of bleaching in many areas, they suffer from poor predictive capacity in regions featuring corals that have adapted or acclimatized to life in marginal environments, such as reefs of the Florida Keys (USA). In these locales, it may instead be preferred to use physiological data from the corals themselves to make predictions about stress tolerance. Herein proteomic da

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DeCarlo, Thomas M., and Hugo B. Harrison. "An enigmatic decoupling between heat stress and coral bleaching on the Great Barrier Reef." PeerJ 7 (August 12, 2019): e7473. http://dx.doi.org/10.7717/peerj.7473.

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Ocean warming threatens the functioning of coral reef ecosystems by inducing mass coral bleaching and mortality events. The link between temperature and coral bleaching is now well-established based on observations that mass bleaching events usually occur when seawater temperatures are anomalously high. However, times of high heat stress but without coral bleaching are equally important because they can inform an understanding of factors that regulate temperature-induced bleaching. Here, we investigate the absence of mass coral bleaching on the Great Barrier Reef (GBR) during austral summer 20

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Miller, Margaret W., Sandra Mendoza Quiroz, Liam Lachs, et al. "Assisted sexual coral recruits show high thermal tolerance to the 2023 Caribbean mass bleaching event." PLOS ONE 19, no. 9 (2024): e0309719. http://dx.doi.org/10.1371/journal.pone.0309719.

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Assisted sexual coral propagation, resulting in greater genet diversity via genetic recombination, has been hypothesized to lead to more adaptable and, hence, resilient restored populations compared to more common clonal techniques. Coral restoration efforts have resulted in substantial populations of ‘Assisted sexual Recruits’ (i.e., juvenile corals derived from assisted sexual reproduction; AR) of multiple species outplanted to reefs or held in in situ nurseries across many locations in the Caribbean. These AR populations provided context to evaluate their relative resilience compared to co-

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Cunning, Ross. "Will coral reefs survive by adaptive bleaching?" Emerging Topics in Life Sciences 6, no. 1 (2021): 11–15. http://dx.doi.org/10.1042/etls20210227.

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Some reef-building corals form symbioses with multiple algal partners that differ in ecologically important traits like heat tolerance. Coral bleaching and recovery can drive symbiont community turnover toward more heat-tolerant partners, and this ‘adaptive bleaching’ response can increase future bleaching thresholds by 1–2°C, aiding survival in warming oceans. However, this mechanism of rapid acclimatization only occurs in corals that are compatible with multiple symbionts, and only when the disturbance regime and competitive dynamics among symbionts are sufficient to bring about community tu

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Kennedy, Emma V., Alexandra Ordoñez, and Guillermo Diaz-Pulido. "Coral bleaching in the southern inshore Great Barrier Reef: a case study from the Keppel Islands." Marine and Freshwater Research 69, no. 1 (2018): 191. http://dx.doi.org/10.1071/mf16317.

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Spatially explicit coral bleaching data can be used to improve our understanding of the causes and consequences of coral bleaching and help identify resilient reefs. In 2016, the Great Barrier Reef (GBR) experienced the most severe coral bleaching in recorded history, yet, as in previous 1998 and 2002 events, the severity and spatial extent of coral bleaching were variable. Cyclonic activity mitigated warming effects in the southern GBR, meaning corals in this region were predicted to bleach less; as a result, southern reef areas received little attention. Herein we report the effects of the 2

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Meunier, Valentine, Sophie Bonnet, Mercedes Camps, et al. "Ingestion of Diazotrophs Makes Corals More Resistant to Heat Stress." Biomolecules 12, no. 4 (2022): 537. http://dx.doi.org/10.3390/biom12040537.

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Over the past decade, coral bleaching events have continued to recur and intensify. During bleaching, corals expel millions of their symbionts, depriving the host from its main food source. One mechanism used by corals to resist bleaching consists in exploiting food sources other than autotrophy. Among the food sources available in the reefs, dinitrogen (N2)-fixing prokaryotes or planktonic diazotrophs (hereafter called ‘PD’) have the particularity to reduce atmospheric dinitrogen (N2) and release part of this nitrogen (diazotroph-derived nitrogen or DDN) in bioavailable form. Here, we submitt

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Miranda, Ricardo J., Igor C. S. Cruz, and Zelinda M. A. N. Leão. "Coral bleaching in the Caramuanas reef (Todos os Santos Bay, Brazil) during the 2010 El Niño event." Latin American Journal of Aquatic Research 41, no. 2 (2017): 351–60. http://dx.doi.org/10.3856/vol41-issue2-fulltext-14.

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Episodes of coral bleaching related to El Niño events have been increasing in frequency and severity. This phenomenon is cited as a major cause of degradation of coral reefs. This study evaluates the effects of coral bleaching on the Caramuanas reef community, which occurred during the southern hemisphere summer of 2009/2010. Within this period the sea surface temperature of 31°C and thermal anomalies up to almost 1°C were recorded. During and after this El Niño event, frequency and severity of bleaching, live coral cover, number of colonies, class size, disease occurrence, and mortality rate

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Barron, Mace G., Cheryl J. McGill, Lee A. Courtney, and Dragoslav T. Marcovich. "Experimental Bleaching of a Reef-Building Coral Using a Simplified Recirculating Laboratory Exposure System." Journal of Marine Biology 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/415167.

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Determining stressor-response relationships in reef building corals continues to be a critical research need due to global declines in coral reef ecosystems and projected declines for the future. A simplified recirculating coral exposure system was coupled to a solar simulator to allow laboratory testing of a diversity of species and morphologies of reef building corals under ecologically relevant conditions of temperature and solar radiation. Combinations of lamps and attenuating filters allowed for assignment of solar radiation treatments in experimental bleaching studies. Three bleaching ex

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González-Espinosa, PC, and SD Donner. "Predicting cold-water bleaching in corals: role of temperature, and potential integration of light exposure." Marine Ecology Progress Series 642 (May 28, 2020): 133–46. http://dx.doi.org/10.3354/meps13336.

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Warm-water growth and survival of corals are constrained by a set of environmental conditions such as temperature, light, nutrient levels and salinity. Water temperatures of 1 to 2°C above the usual summer maximum can trigger a phenomenon known as coral bleaching, whereby disruption of the symbiosis between coral and dinoflagellate micro-algae, living within the coral tissue, reveals the white skeleton of coral. Anomalously cold water can also lead to coral bleaching but has been the subject of limited research. Although cold-water bleaching events are less common, they can produce similar imp

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Schoepf, Verena, Andréa G. Grottoli, Stephen J. Levas, et al. "Annual coral bleaching and the long-term recovery capacity of coral." Proceedings of the Royal Society B: Biological Sciences 282, no. 1819 (2015): 20151887. http://dx.doi.org/10.1098/rspb.2015.1887.

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Mass bleaching events are predicted to occur annually later this century. Nevertheless, it remains unknown whether corals will be able to recover between annual bleaching events. Using a combined tank and field experiment, we simulated annual bleaching by exposing three Caribbean coral species ( Porites divaricata , Porites astreoides and Orbicella faveolata ) to elevated temperatures for 2.5 weeks in 2 consecutive years. The impact of annual bleaching stress on chlorophyll a , energy reserves, calcification, and tissue C and N isotopes was assessed immediately after the second bleaching and a

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Van, Tran Thi, Nguyen Trinh Duc Hieu, Nguyen Huu Huan, and Nguyen Phuong Lien. "Investigating Sea Surface Temperature and Coral Bleaching in the Coastal Area of Khanh Hoa Province." IOP Conference Series: Earth and Environmental Science 964, no. 1 (2022): 012004. http://dx.doi.org/10.1088/1755-1315/964/1/012004.

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Abstract Khanh Hoa Coastal area is considered the area with the most diverse coral reefs in the west of the East Sea. With the trend of increasing global temperature, the coral reefs here are affected, including the phenomenon of bleaching. This paper uses a Multi-scale Ultra-high Resolution Sea Surface Temperature (MUR SST) data source to evaluate the possible relationship between sea surface temperature and coral bleaching in the period 2010-2019 in Khanh Hoa coastal area is based on two parameters: Hot Spot (HS) and Degree Heating Months (DHM). Research results show that in the past 10 year

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Toren, A., L. Landau, A. Kushmaro, Y. Loya, and E. Rosenberg. "Effect of Temperature on Adhesion ofVibrio Strain AK-1 to Oculina patagonica and on Coral Bleaching." Applied and Environmental Microbiology 64, no. 4 (1998): 1379–84. http://dx.doi.org/10.1128/aem.64.4.1379-1384.1998.

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ABSTRACT Laboratory aquarium experiments demonstrated thatVibrio strain AK-1 caused rapid and extensive bleaching of the coral Oculina patagonica at 29°C, slower and less-complete bleaching at 23°C, and no bleaching at 16°C. At 29°C, the application of approximately 100 Vibrio strain AK-1 cells directly onto the coral caused 50 and 83% bleaching after 10 and 20 days, respectively. At 16°C, there was no bleaching, even with an initial inoculum of 1.2 × 108 bacteria. To begin to understand the effect of seawater temperature on bleaching ofO. patagonica by Vibrio strain AK-1, adhesion of the bact

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Wang, Jih-Terng, Chi-Wei Chu, and Keryea Soong. "Comparison of the bleaching susceptibility of coral species by using minimal samples of live corals." PeerJ 10 (January 26, 2022): e12840. http://dx.doi.org/10.7717/peerj.12840.

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In massive bleaching events (losing symbiotic algae from corals), more sensitive corals are bleached earlier than other corals. To perform a comparison of bleaching susceptibility within and across coral species, a simple quantitative method is required. Accordingly, we present a laboratory-based method for comparing the bleaching susceptibility of various coral species by using a standardized image analysis protocol. Coral fragments were sampled from the colonies of five species selected from Kenting, southern Taiwan, and maintained in the same aquarium tank with circulating seawater; 2 seawa

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Lenz, Elizabeth A., Megan J. Donahue, Ruth D. Gates, Hollie M. Putnam, Eveline van der Steeg, and Jacqueline L. Padilla-Gamiño. "Parental effects provide an opportunity for coral resilience following major bleaching events." PLOS ONE 20, no. 1 (2025): e0290479. https://doi.org/10.1371/journal.pone.0290479.

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Identifying processes that promote coral reef recovery and resilience is crucial as ocean warming becomes more frequent and severe. Sexual reproduction is essential for the replenishment of coral populations and maintenance of genetic diversity; however, the ability for corals to reproduce may be impaired by marine heatwaves that cause coral bleaching. In 2014 and 2015, the Hawaiian Islands experienced coral bleaching with differential bleaching susceptibility in the species Montipora capitata, a dominant reef-building coral in the region. We tested the hypothesis that coral bleaching resistan

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