New research shows coral larvae cannot survive a 5,000-kilometer trip across the Pacific to replenish eastern corals. Simulations indicate reefs in the Eastern Tropical Pacific are isolated and vulnerable to disturbances.
A team of scientists used a state-of-the-art computer model to test Charles Darwin's hypothesis that marine species cannot cross the Eastern Pacific's 'impassable' marine barrier. The study found that even under extreme El Niño conditions, coral larvae could not survive long enough to make the trip across the ocean.
A recent study found that coral reefs with fewer large, predator fish have nearly half of their key nutrients absent. Fish play a crucial role in recycling nutrients in the reef's tight nutrient cycle. The researchers suggest that curbing fishing practices targeting large predator fish could help reefs recover.
Researchers from Queensland University of Technology have captured the first videos of a coral's bleaching behavior, showing how it employs pulsed inflation to expel Symbiodinium algae. The study suggests that this rapid expulsion may increase the coral's chance of survival during abnormally high sea temperatures.
Scientists have identified good bacteria as vital to coral health, enabling corals to recover from bleaching caused by rising temperatures. The study highlights the importance of understanding bacterial communities on corals to ensure long-term survival.
Researchers discovered significant gene expression changes in coral when introduced to algae at four hours after the symbiotic relationship begins. This finding highlights the adaptive process of coral cells responding to the introduction of the symbiont and its impact on phagosome functionality.
New research reveals that singlet oxygen plays a crucial role in triggering coral bleaching by expelling algae from coral tissue. The findings may help protect reefs and support marine species dependent on them.
Scientists have found that large, healthy-looking corals may be 'coral zombies' with no reproductive ability, making them useless in a recovery effort. The study suggests that oxybenzone, a common UV-filtering compound in sunscreen, is killing coral and causing DNA damage.
NOAA forecasts widespread coral bleaching in US and global waters due to rising sea temperatures, with Hawaii, Florida Keys, and Pacific island nations at highest risk. The agency is working with communities and conservationists to enhance reef resilience and reduce local stressors.
Researchers identified 15 'bright spots' with more fish than expected on coral reefs, often due to local involvement and management practices. The study's findings offer hope for radical new approaches to conservation and suggest investments in local ownership rights can promote better reef conditions.
The algorithm combines all published algae studies prior to February 2015 to rank genetic types' thermotolerance, helping identify colonies at risk from climate change. By pinpointing thermotolerant algae, conservationists can focus their efforts on preserving coral reefs.
A three-year study found that 62% of corals weakened by pollution died when parrotfish bit them, turning a natural process into coral murder. Multiple stressors combined with warming temperatures facilitate pathogens, killing corals.
Researchers found that a combination of factors including overfishing, nutrient pollution, and pathogenic disease weaken corals, allowing opportunistic pathogens to build to deadly levels. The study suggests that coral reef declines are being caused by the interaction of multiple local stressors and global warming.
A three-year study found that corals are declining worldwide due to a combination of threats including overfishing, nutrient pollution and pathogenic disease. The study reveals that even modest temperature increases make corals more vulnerable to bacteria, leading to increased algal cover and coral mortality.
A UN report finds mesophotic coral ecosystems (MCEs) may preserve some species and replenish shallow reef populations, providing a refuge from bleaching. Cooler, deeper water in MCEs could be more hospitable to many species than warmer surface water, offering a stable environment.
Acropora corals have thrived by leveraging environmental challenges, such as tropical storms, to grow and form new colonies. However, their rapid growth is vulnerable to global warming, diseases, and coral bleaching, threatening their future in marine regions.
A comparative analysis of three shark species in the Virgin Islands reveals distinct use patterns in deeper coral reefs. Lemon sharks show increased activity near group spawning aggregations, suggesting a link between fish prey location and shark movements.
A new study by University of Miami researchers found that ocean acidification is dissolving limestone on coral reefs in the upper Florida Keys at an alarming rate. The annual loss of reef poses a significant threat to the ecosystem's health and the estimated $7.6 billion asset value of these reefs.
Research finds that intact coral reef areas with extensive live coral cover harbor the greatest amount of genetic diversity, supporting targeted protection of reefs throughout the Hawaiian Islands. Genetic diversity varies across the region, highlighting the need for diverse conservation approaches.
Researchers identified key components of the molecular toolkit that allow corals to build their skeletons, shedding light on the transformation from larval stage to adult coral. This knowledge is crucial for understanding how corals respond to ocean acidification, rising sea surface temperatures, and pollution.
A new study found that coral reefs use platelet activating factor (PAF) to trigger inflammation, a key process in bringing in protective immune cells. This molecule has been part of human immune systems for over 550 million years, suggesting a common evolutionary origin.
A new study finds that excessive algae growth in coral reefs causes microbes to dominate the food chain, depleting oxygen and releasing harmful pathogens. This leads to a runaway feedback loop, further coral death and ecosystem collapse. The research highlights the impact of human activities on coral reef ecosystems.
The study found that Acropora corals, responsible for modern reef growth, are experiencing sharp declines in abundance worldwide. However, by managing local anthropogenic stressors such as pollution and over-fishing, it is possible to increase their resistance to climate change and preserve these corals.
A new study found that Great Barrier Reef corals survived past bleaching events by being exposed to a gradual warming pattern. However, this protective mechanism is likely to be lost under near future climate change scenarios. The researchers recommend prioritizing conservation efforts for reefs with retained thermal protection.
A new study projects severe reduction in thermal tolerance for Great Barrier Reef corals, leading to increased coral bleaching. The research found that near-future temperature increases may result in loss of protective mechanisms, resulting in dramatic increase in coral bleaching events.
A global index detailing vulnerable corals and their susceptibility to thermal stress is now available. The index, based on nearly half a century of historical data, will help conservationists and scientists understand the effects of climate change on coral reefs.
A novel imaging technique using µCT scans has revealed that coral reefs are more vulnerable to bioerosion than previously thought, with changes in ocean pH having a significant impact on reef growth and breakdown. The study provides new insights into the complex relationships between environmental conditions and reef processes.
Researchers found that no-take marine reserves are less impacted and recover faster than unprotected reefs. Well-designed reserves provide benefits for non-target species and wider ecosystem processes.
Researchers are studying coral genomes to better comprehend why some reefs thrive while others die, with implications for Guam's economy and tourism industry. The new genetic sequencer will enable local scientists to tackle molecular reef ecology and train the next generation of researchers.
Current methods for predicting damage to coral reefs are limited by a focus on individual species in isolation. To address this, researchers propose combining empirical evidence with traditional biological scaling models and computer simulations to understand the emergent properties of acidification-afflicted reef ecosystems. This appr...
A new global database allows scientists to quickly address unresolved questions about coral reefs. The Coral Trait Database houses physiological, morphological, ecological, phylogenetic, and biogeographic trait information.
A new study found that corals preconditioned to high CO2 levels before increased temperatures showed 44% lower growth rates compared to unconditioned corals. This suggests that elevated CO2 worsens coral response to thermal stress, potentially exacerbating climate change impacts on coral reefs.
Caribbean coral reefs face mounting pressure from global warming, local pollution, and over-fishing of herbivorous fish. A new study suggests that implementing size limits and catch limits can help maintain reef resilience. The research provides tools for fisheries managers to revise current practices and sustain fishers' livelihoods.
New research highlights the key role of existing coral reef biodiversity in facilitating rapid adaptation to climate change. The study found that natural selection of existing biodiversity is essential for coping with rising seawater temperatures and other stressors threatening coral reefs.
Coral reefs in the South China Sea are facing severe damage due to dredging and land reclamation. The study reveals that seven atolls have lost ~11.6 km2 of reef area while gaining ~10.7 km2 of land between 2014 and 2015. The researchers call for international cooperation to conserve this critical ecosystem.
A new approach to studying coral reefs suggests that multiple stressors, such as ocean temperature and acidification, can have devastating effects on corals. The researchers recommend a global strategy for choosing locations for larger field-based experiments to inform adaptation policies.
Using tiny bubbles in seawater can help reduce acidity and promote coral growth, potentially saving the world's largest reef systems. The technique could provide a cost-effective solution to mitigate the effects of climate change.
A new experimental platform is providing new insights into the complex problem of coral decline. The 'coral on a chip' system allows scientists to examine living coral polyps in the lab under controlled conditions.
Researchers developed a new method to produce coral snake antivenom using synthetically designed DNA, bypassing the need for venom collection from snakes. The approach resulted in a neutralization rate of 60% against coral snake venom, offering a promising alternative to traditional methods.
A recent study found that ocean acidification is already affecting coral reefs, causing them to grow slower than they did in preindustrial conditions. The research, published in Nature, manipulated seawater chemistry in a natural coral-reef community to determine the impact of excess carbon dioxide on coral reef growth.
Scientists have found that ocean acidification is already slowing coral reef growth, with the potential for widespread devastation if left unchecked. Researchers manipulated seawater chemistry in a natural ecosystem to determine the impact of excess CO2 on coral reefs.
Coral reefs are already experiencing slower growth due to ocean acidification, which is causing coral calcification rates to decrease. The study found that increasing the pH of seawater can stimulate calcification rates.
The current global coral bleaching event, started in 2014, could extend into 2017 due to record ocean temperatures caused by El Niño. Corals are stressed when expelling symbiotic algae, leading to erosion and destruction of fish habitats.
A global analysis reveals coral reefs under less protection due to proximity to human settlements. Conservation efforts may be misdirected towards isolated reefs that naturally receive more protection.
Researchers determine when coral died with precision of up to one to two years, revealing dramatic loss of coral cover near Bowen, Queensland. The study provides a benchmark for monitoring the recovery of these reefs.
Researchers have raised laboratory-bred colonies of a threatened Caribbean coral species to sexual maturity, reproducing simultaneously with their natural population. This breakthrough technique increases genetic diversity and provides new hope for the recovery of dwindling elkhorn coral populations.
Researchers have discovered that the shape of a fish's tail is a key predictor of its ability to live across different depths on coral reefs. Fish with more forked tails are better adapted to survive in both shallow and deep habitats, thanks to their stealth swimming capabilities.
A study found that butterflyfishes overwhelmingly avoid corals with seaweed contact, suggesting chemical cues produced by seaweed alter coral palatability. This shift in behavior could have ripple effects on the entire ecosystem, impacting food supply and tourism opportunities.
Researchers found that coral communities on most of the reefs had recovered rapidly from a major bleaching event. However, reefs dominated by branching and table corals are vulnerable to higher sea surface temperatures, threatening their growth potential.
Researchers analyzed coral genome samples from the Ryukyu Archipelago, revealing 4 distinct groups corresponding to geographical locations. The findings suggest that coral populations repopulated themselves after 1998 bleaching, contradicting previous assumptions about long-distance larval migration.
A new University of Florida study suggests that coral reefs may be more vulnerable to nutrient pollution from human activities, even with the presence of herbivores. The research highlights the need for a holistic approach to protecting these ecosystems.
Research found that corals from the Kimberley region in north Western Australia are sensitive to heat stress and bleaching, despite their natural tolerance to temperature fluctuations. Massive corals had a better chance of surviving and recovering from bleaching than branching corals.
Researchers discovered that coral species storing more fat reserves can survive annual bleaching events and recover fully within a year. The study sheds light on which coral species are most resilient to heat stress, offering crucial information for predicting the persistence of coral reefs.
A multidisciplinary team of researchers developed a computational approach to assess the aesthetic appeal of coral reefs, finding that objective visual cues are correlated with the health and beauty of reef ecosystems. The study provides a cost-effective tool for monitoring coral reef communities and targets their natural beauty.
A Tel Aviv University study finds that oxybenzone, a common chemical in sunscreen lotions, is highly toxic to juvenile corals, causing coral bleaching, DNA damage, and death. Concentrations as low as 62 parts per trillion pose an ecological threat.
A study found that oxybenzone in sunscreen is toxic to coral reefs, causing DNA damage and deforming larvae. The researchers recommend wearing rash guards or scuba wetsuits without hygienic products when diving to help protect the reefs.
A team of marine scientists discovered four new deep-water coral reefs in the Atlantic Ocean using predictive mathematical models. The reefs were identified at depths of up to 1.2km west of Ireland and confirmed during a two-week expedition using an underwater robot.
A team of scientists found a coral species that can maintain a constant pH in its calcifying fluid, even under acidic conditions. This unique mechanism allows the coral to form its calcium carbonate skeleton and grow at a relatively constant rate.
A new study measures coral-reef ecosystem condition, predicts key threats, and evaluates human stressors in Micronesia. The results reveal only 42% of major reef habitats exceed thresholds for conservation efforts.
A new study by WCS found that coral reef diversity 'hotspots' in the southwestern Indian Ocean prioritize fish biomass over location for conservation. Reefs with high fish biomass (>600 kg/ha) should be prioritized for protection.