A new study reveals that mass coral bleaching on the Great Barrier Reef impacted both shallow and deep reefs, highlighting the vulnerability of the ecosystem. The research found substantial bleaching effects on deep reefs, despite their depth providing some protection from thermal anomalies.
A new study uses modeling tools to identify areas where forest conservation in Fiji can reduce harm to coral reefs and their fish populations. The research found that protecting or restoring native forests can provide the most benefit to downstream coral reef systems.
Researchers found a novel approach combining manual removal and native urchin outplanting effective in reducing invasive macroalgae on Hawaiian coral reefs. The method reduced algae growth by 85% over two years without harming corals or other reef species.
Scientists replicate a landmark study to determine changes in coral sea temperature tolerance over time. The results show corals are becoming more tolerant of warmer temperatures, but the rate of adaptation is not keeping pace with rising ocean temperatures.
Snail attacks reduce Porites cylindrica coral growth by up to 43% in less than a month, threatening the survival of degraded Pacific reefs. The snails selectively prey on the last remaining coral species, exacerbating the downward spiral of reef decline.
A recent study reveals that the marine heatwave had a significant impact on fish and invertebrate communities across the Great Barrier Reef and Coral Sea. The loss of coral was only part of the story, with changes also occurring in other animal populations.
Deep mesophotic reefs are unique habitats facing the same threats as shallow reefs, including climate change, storms, and pollution. The study's findings contradict the 'refuge hypothesis' and highlight the critical importance of protecting twilight zone reefs.
A new report suggests that deep water coral reefs are not refuges for shallow reef organisms and require protection. The study found that mesophotic coral reefs have their own independent communities with little species overlap between depth zones.
A six-fold decline in coral recovery rates has been identified across the Great Barrier Reef over an 18-year period. Effective local management and strong global action to limit climate change are crucial to prevent further decline.
New research highlights the critical impact of invasive rats on coral reef ecosystems, leading to severe ecological harm. Rat eradication is proposed as a high conservation priority to restore seabird-derived nutrient subsidies, benefiting terrestrial ecosystems and coral reefs.
A new commentary suggests that understanding coral immunity can help identify corals better able to withstand climate change. Researchers propose a model of coral susceptibility, where investing in immunity enables corals to tolerate more damage before initiating an immune response.
Distinguished Professor Terry Hughes has been honored by the Prince Albert II of Monaco Foundation for his climate change research on coral reefs. His work recognizes the influence of rapid climate change on world's coral reefs.
Researchers found that barnacle density decreases with depth and extent of coral cover, suggesting a preference for spreading out. This study provides insight into the importance of barnacles in reef erosion and their potential as indicators of reef health.
A massive study of tropical coral reefs found that marine reserves near heavily populated areas have only a quarter of the fish and are less likely to have top predators. Marine reserves with medium to high human pressure can still have five times more fish than openly fished reefs, offering a conservation benefit.
Researchers found that removing coral-eating snails significantly boosted corals' resilience to bleaching, with only 50% of corals experiencing bleaching when snails were removed. In contrast, corals with high snail densities experienced near 100% bleaching.
A massive study of 1,800 tropical coral reefs found that marine reserves near human populations struggle to protect fish stocks. However, these reserves still offer significant benefits for key fisheries species and top predators like sharks. The study highlights the importance of targeted conservation strategies in different locations.
A study evaluating human pressures on coral reefs found that high human pressure decreases effectiveness of conservation strategies, while low pressure preserves fish biomass and top predator populations. Conservation gains were highest in areas with moderate human pressure, highlighting the need for targeted management approaches.
New research suggests many coral reefs will be unable to keep growing fast enough to keep up with rising sea levels, leading to increased erosion and flooding risk. Coral reefs are struggling due to combinations of coral disease, water quality deterioration, fishing pressure, and severe impacts from climate change-induced coral bleaching.
A new study suggests that many coral reefs will be unable to keep growing fast enough to keep up with rising sea levels, leading to increased erosion and flooding risk. The researchers found that growth rates for over 200 tropical western Atlantic and Indian Ocean reefs are slowing due to coral reef degradation.
Researchers have linked the ecology of adult fish populations inhabiting coral reefs with the dispersal of baby fish between reefs, revealing a complex network called a marine metapopulation. The study found that successful larval dispersal was crucial for replenishing key reefs.
A new study using genomic techniques found that algal cells in coral reefs exhibit stronger responses to ocean warming and acidification stress than their coral hosts. The research suggests an early warning system for bleaching events, which could help anticipate and prevent massive damage to coral reef habitats.
A recent study by researchers from the University of Hawaii at Manoa found that nutrient pollution accelerates ocean acidification's negative impacts on coral reefs. This increases calcification rates, disrupts natural chemical dynamics, and promotes seaweed growth over corals.
Researchers at Bar-Ilan University found that even highly resilient coral reefs can be compromised by local disturbances like excess nutrients and sewage. The study's results suggest that removing these pollutants is crucial to securing the world's most valuable ecosystems.
A new study found that marine protected areas (MPAs) can help coral reefs recover from the damaging effects of global climate change. MPAs resulted in a 62% increase in young corals density, improving the ecosystem's ability to recover from major impacts like hurricanes and coral bleaching.
Scientists have identified thermal energy and low climate stress as key drivers of coral species diversity in the Indian Ocean. The study, published in the Journal of Biogeography, found that optimal levels of warm water and reduced stress support high species richness, while extreme temperatures kill many species.
Coral reef fish rely on acoustic cues for habitat selection and settlement. Research found that degraded reefs have reduced acoustic complexity, richness, and sound-pressure levels, making them less attractive to fish larvae and juvenile fish. This may limit future fish settlement and reduce reef resilience.
Researchers found degraded coral reefs are quieter than five years ago, with 40% fewer juvenile fishes attracted compared to healthy reefs. The loss of reef sounds could have devastating consequences for reefs, as fish play critical roles in maintaining their health.
A new study reveals that reefs experiencing frequent temperature changes are better equipped to resist coral bleaching during ocean warming events. The research highlights the importance of high-frequency temperature variability in reef regions worldwide, providing valuable insights for conservation efforts and marine spatial planning.
Scientists find nearly 80% of coral reefs on Upolu Island have less than 10% cover, with recent coral death and smaller fish populations. Local human activities and climate change exacerbate the issue, while protected areas show signs of effective management.
Researchers at Stanford University School of Medicine successfully used CRISPR-Cas9 to genetically edit coral, demonstrating its potential as a resource for coral biologists. The technique allowed them to identify critical genes in coral biology and alter multiple gene copies, offering hope for conserving coral reefs.
A common Great Barrier Reef coral species has enough genetic diversity to adapt to warming conditions, but its future remains uncertain. The model predicts that the coral will become more sensitive to temperature swings, but it will still survive for at least another century.
A new study found that corals on the northern Great Barrier Reef experienced a catastrophic die-off following the extended marine heatwave of 2016. The amount of coral death was closely linked to the amount of bleaching and level of heat exposure, with the northern third of the reef being the most severely affected.
New research reveals coral bleaching events reduce fish species and community diversity on reefs. The Great Barrier Reef suffered significant losses after a mass bleaching event in 2016, with some fish species declining sharply.
Researchers advocate for harnessing dynamic ecological forces to facilitate coral reef ecosystem recovery. By controlling factors like coral density and site selection, restoration practitioners can maximize growth rates and minimize mortality, promoting positive feedback processes.
Researchers found that fringing coral reefs can effectively protect shorelines from extensive erosion caused by tropical cyclones. The study used Ningaloo Reef as a case study and showed that the reef's shape and structure can dissipate large waves, reducing coastal damage.
A new model simulates sediment transport and coral reef development in response to climatic variability. The study reveals that high sediment loads prevented coral growth during early sea level rise, while a balance between climate, sea level, and physiography enabled reefs to thrive.
A recent study found that high levels of submarine groundwater discharge (SGD) can harm coral reefs by causing stress and accelerating bioerosion. However, when SGD is at low levels, corals can actually thrive on the reef, suggesting a potential solution to mitigate reef degradation in urban areas like Maunalua Bay.
New research reveals that larger coral reefs can moderate the impact of ocean warming on Caribbean fish populations, leading to a reduction in fish population decline. The study found that doubling reef area can reduce changes in fish composition by 30-80%, highlighting the potential effectiveness of reef conservation and restoration.
A new study published in Nature shows that ocean acidification caused by carbon dioxide emissions will severely slow coral reef growth. The research team manipulated seawater chemistry to reflect end-of-century projections, finding that increased acidity hinders calcification and reef growth.
By 2050, most coral reefs are expected to experience net sediment dissolution, impacting health and biodiversity. Ocean acidification is linked to reduced calcium carbonate saturation, affecting coral growth rates.
A new study identifies the details of how ocean acidification affects coral skeletons, allowing scientists to predict where corals will be more vulnerable. The research found that ocean acidification particularly impedes the thickening process, decreasing the skeletons' density and leaving them more vulnerable to breaking.
Researchers developed a model to explore the effect of ocean acidification on coral skeletal growth, finding that acidification influences skeletal density but not extension. The simulation predicted an average decline of around 12.4% in Porites skeletal density across global reef sites by the end of the 21st century.
A recent study has found that contact with plastic waste significantly increases the chance of disease in corals. Dr. Joleah Lamb led the research, which examined over 120,000 corals on 159 reefs across Asia-Pacific regions. The findings highlight the critical role plastics play in promoting disease among marine organisms.
A new study by Cornell University reveals that oceanic plastic trash can convey disease to coral reefs, leading to devastating consequences. The research found that the presence of plastic debris on reefs increases the likelihood of disease from 4 to 89 percent.
A new study found that 11.1 billion plastic items are lodged on coral reefs across the Asia-Pacific region, increasing the risk of coral disease by 85x. Plastic debris is linked to a 20-fold increased risk of disease, particularly skeletal eroding band disease.
Researchers found that climate change destabilizes coral microbiomes, leading to an imbalance of beneficial and pathogenic bacteria. The study suggests that conserving coral populations requires consideration of their associated microbial communities.
A comprehensive review of literature on coral resilience highlights the need for urgent action to reduce greenhouse gas emissions. The study also identifies novel management techniques and overlooked reef areas to protect against climate change impacts.
Researchers discovered significantly smaller eyes and tails in fish from coral reefs subjected to intense commercial shark fishing, highlighting the impact of human-driven shark declines on marine ecosystems. This finding underscores the urgent need to understand the consequences of shark removals on ecosystem dynamics.
Global warming is accelerating coral bleaching, threatening the future of coral reefs and millions of people reliant on them. The study documents a dramatic shortening of the gap between pairs of bleaching events, now occurring every six years on average.
Three new species of zoantharians were discovered in the Indo-Pacific region, expanding our understanding of coral reef diversity. One species was named after President Tommy Remengesau of Palau, highlighting the nation's support for marine conservation.
Researchers have developed a new sowing approach for coral reef restoration, allowing for the handling of large numbers of corals in a short amount of time at significantly lower costs. The approach minimizes costs and time required for outplanting corals by settling larvae on specifically designed substrates.
A recent study led by Harvard University researchers found that coral restoration efforts can have a positive impact on fish communities in the short term and over time. The study showed that even after just one week, significantly more fish and a greater diversity of species were present at experimental coral beds.
Researchers assess hurricane damage to Caribbean coral reefs, finding severe injury and changes in composition. Despite encouraging signs of recovery, scientists note increased vulnerability due to climate change and stressors.
Researchers identified 100 undisturbed reefs with potential to provide coral larvae to damaged areas, promoting regional recovery. Effective local protection is crucial to support this ecosystem's resilience.
Researchers created detailed photomosaics of the coral reef at Palmyra Atoll, discovering non-random clustering and a link between coral growth and reproductive strategy. The findings have implications for coral reef management and conservation.
The study found significant bleaching in Kimberley region and mild bleaching at Rottnest Island. Ningaloo Reef escaped bleaching, but experienced temperature-related coral mortality.
A new study reveals that healthy coral populations can produce significantly more offspring than degraded populations, with higher percentages of successful parents and increased reproductive output. This finding highlights the critical role of healthy coral reefs in supporting reef recovery and re-seeding other areas.
Scientists discovered that hardy corals, known as coralliths, can create stable habitats for other species to build upon. These mobile corals can survive harsh environments and may have played a key role in forming existing coral habitats.
A recent expedition to the Flower Garden Banks National Marine Sanctuary revealed a 10% drop in salinity levels due to Hurricane Harvey's floodwater plume. The team hopes to track the plume as it migrates through the Gulf, aiming to understand its impact on the reefs' health.
Researchers at SDSU and partners have developed a new method to identify medicinal properties in unknown coral reef molecules. By analyzing molecular fingerprints, they can predict the potential therapeutic value of these molecules.