Articles tagged with Coral Reefs
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Researchers found snails increased oxygen consumption 4-5 times during jumping to cope with rising temperatures. The study suggests the snails can maintain this strong increase in oxygen uptake even at high temperatures that would be lethal to fish.
A new study finds that all existing coral reefs will be engulfed in inhospitable ocean chemistry conditions if civilization continues on its current emissions trajectory. Deep cuts in emissions are necessary to sustain even a fraction of existing reefs.
Researchers at Rutgers University have discovered the biological process of how corals create their skeletons, which form massive and ecologically vital coral reefs. The study found that specific proteins produced by corals can form limestones, even in more acidic water, suggesting coral reefs may survive ocean acidification.
A 17-year study on coral colonies off South America reveals the devastating impact of El Niño on coral diversity and density. The study found that it took 13 years for the coral reef system in Brazil to recover from the event, highlighting their vulnerability to climate-related changes.
Researchers found that limiting greenhouse warming to three watts per square metre can slow coral reef habitat loss. However, artificial temperature regulation through solar radiation geoengineering may have unintended consequences on tropical corals.
Coral reefs face declining health due to climate change, pollution, and overfishing. However, researchers suggest that proactive measures can prevent their collapse, emphasizing the importance of reef function and local management.
Researchers discovered that corals' skeletons scatter light differently, affecting algae retention and survival. This phenomenon helps predict coral reef response to climate change stressors, shedding light on preservation strategies.
A long-term study shows that isolated coral reefs like Scott Reef in Western Australia can recover from severe disturbances without relying on neighboring reefs. The reef's isolation allowed surviving corals to rapidly grow and propagate, ultimately recovering within 12 years.
The research team will develop an integrated model of coral reef development to link climate change, sea level, tectonics, and reef growth rates. The findings will provide a record of tropical climates and coral reef growth.
Researchers found that clownfish fan their anemone hosts to increase oxygen consumption, benefiting both species. The fish's nocturnal antics may also improve circulation in the anemone, supporting life under low oxygen conditions.
A new study projects that most coral reefs will experience annual bleaching events by 2045, with a quarter experiencing them up to five years earlier. Reducing carbon emissions can delay these events in nearly a quarter of reef areas for over two decades.
A recent study using underwater video cameras has identified four species of herbivorous fish as the primary cleaners of coral reefs in the South Pacific. These fish are highly picky eaters and target specific types of seaweeds, highlighting the importance of biodiversity for reef health.
Researchers at National Oceanography Centre and New York University Abu Dhabi discovered corals can thrive at high seawater temperatures, up to 36 degrees Celsius. The study found special algae strains that facilitate this heat resistance, providing new insights into coral survival and potential for reef conservation.
Researchers have discovered that Caribbean coral reefs are facing a significant threat due to reduced rates of carbonate production, leading to erosion and loss of growth potential. The study found that reefs in shallow waters have declined by 60-70% in growth rates compared to historical records.
Corals produce pigments that act as sunscreens for their symbiotic algae, removing harmful light and allowing the algae to photosynthesize. This mechanism helps corals survive in shallow water where sunlight can be detrimental to algae and hosts alike.
Researchers from the University of Ryukyus discovered two new species of Neozoanthus anemones in southern Japan and the Great Barrier Reef, Australia. The finding highlights the vast yet under-explored biodiversity of marine ecosystems.
The Säcken reef in Sweden's Koster Fjord is threatened by trawling and sedimentation, with a recent study showing it is isolated from nearby reefs. To combat this, researchers are introducing healthy corals from Norway to aid in the reef's restoration.
The Great Barrier Reef has lost over half its coral cover in the last 27 years, primarily due to intense tropical cyclones, population explosions of Crown-of-thorns starfish, and two severe coral bleaching events. The study highlights the need for action to control crown of thorns populations.
The Great Barrier Reef is experiencing significant changes in sea surface temperatures and seasonal patterns over the past 25 years. Water temperatures have increased by an average of 0.2 degrees, with more pronounced warming in certain areas. This shift affects marine life and poses challenges for managing protected areas.
Researchers at Oregon State University found that overgrown algae can bring unwanted pathogens, choke off oxygen, and disrupt helpful bacteria on coral reefs. The study reveals a 'slippery slope to slime' where increased algae growth leads to decreased coral growth rates and altered bacterial communities.
A new study published in Nature Climate Change warns that most coral reefs will be subject to severe degradation if global warming exceeds 2 degrees Celsius. Only a scenario with strong action on mitigating greenhouse-gas emissions and rapid coral adaptation could save two-thirds of coral reefs.
Researchers developed a method to analyze ear-bone 'tree rings' to track juvenile fish movements, revealing surprising plasticity and long-distance migrations between habitats. This study has important implications for management and protection of coral reefs.
Coral scientists have developed a simplified method for measuring coral reef resilience, prioritizing heat-resistant coral species and background temperature variability. The new model offers a cost-effective tool for conservation planning, but further research is needed to evaluate its priority and types of corals required.
Research finds that coral reefs' ability to adapt to environmental changes is linked to the number and variety of single-celled algae they host. Inflexible corals, which host a single type of algae, are more resistant to stress than flexible corals, which host multiple types.
Locally managed marine protected areas in Fiji will effectively protect between 12-18 percent of all coastal and inshore marine habitats by 2020. This 'people power' approach is on track to meet the national government's goal to protect at least 30 percent of Fiji's inshore habitats.
Research found that nutrient imbalance in reef waters increases bleaching susceptibility of corals. Balancing nutrient input in coastal waters could mitigate effects of warming oceans on coral reefs.
A recent study by Wildlife Conservation Society and University of the Azores identifies additional risks to coral reefs from pollution and overfishing. The proliferation of microbes, sponges, and worms further degrades corals, highlighting the complexity of reefs and possible solutions.
Research reveals widespread skin cancer in wild coral trout populations, caused by UV radiation, affecting three species on the Great Barrier Reef. The study's findings highlight the urgent need for continued conservation and management of reefs and their inhabitants.
A new study has discovered that Middle Reef, part of Australia's Great Barrier Reef, has grown more rapidly than other reefs in areas with lower levels of sediment stress. The reef thrives in water with high levels of sediment, which had previously been believed to be detrimental to growth.
Geologist Dr Scott Bryan's research found plants and tiny animals including corals latched onto pumice as it traveled over 5000km from Tonga to north-eastern Australia. This journey provided concrete proof that pumice rafting is a significant factor in dispersing marine life.
Researchers have identified two viruses that infect symbiotic microalgae essential for coral growth and health. The presence of these viruses could be a contributing factor to the decline of coral reefs worldwide. Corals face various environmental threats, including warming temperatures, competition, and pollution.
Researchers have discovered evidence of catastrophic events causing rock pulverization near major faults in California and Japan, while coral reefs at high latitudes and turbid inner bays provide insights into environmental gradients. Continental collisions are also explored through the study of Taiwan's pre-collision zone.
Indo-Pacific coral reefs are more resilient due to lower seaweed growth rates and a higher abundance of herbivorous fish, which treats seaweed as a delicacy. The study suggests that these reefs can withstand degradation before being overtaken by seaweeds.
Dr Mariana Fuentes' new book 'Dhyum the Dugong' takes readers on a journey through the life of a real dugong in the Torres Strait. The book aims to educate young Australians about the importance of protecting these endangered marine mammals.
Despite grim scientific evidence, coral scientist John Pandolfi believes it's possible to save 60-70% of the world's coral reefs. The key to success lies in reducing local stresses from pollution, runoff, and overfishing, as well as aggressively reducing CO2 emissions.
A Scientific Consensus Statement on Climate Change and Coral Reefs supports 2,400 scientists calling for action to safeguard valuable reef ecosystems. The statement highlights the impacts of rising sea levels, intense storms, and ocean pollution on coral reefs.
Coral growth and tissue proliferation are linked to disease, wounding, and stress-related color changes in reef-building corals. The study found that increased growth is the underlying physiological process associated with these changes.
Researchers found that climate change led to a collapse of coral reefs in the eastern Pacific for 40% of their total history, spanning 4,000 years. The study suggests that similar collapse could occur again due to current climate patterns.
Researchers found that anemone fish babies can adjust to ocean acidification if their parents are also raised in acidic water. This discovery suggests some species may be more resilient than previously thought, which could help mitigate the impact of CO2 emission reduction.
Jan Vicente, a graduate student at the University of Maryland Center for Environmental Science, has been awarded a NOAA Dr. Nancy Foster Scholarship to investigate how ocean acidification affects sponge skeletons. The research will focus on two common Florida Keys sponges and their bacterial communities.
A new study reveals that Caribbean seaweeds bloom four times faster than their counterparts in the Pacific Ocean, giving them an upper hand over corals. This could lead to reduced coral recovery after damage, posing a significant threat to Caribbean coral reefs.
Researchers created a mini-lab in Australia's Great Barrier Reef to simulate predicted future ocean conditions and test the reaction of corals. The study, published in Scientific Reports, provides new insights into how reefs respond to ocean acidification and can inform conservation efforts.
MoLab measures biological, physical, chemical, or geological parameters over several months and square kilometers. The system investigates the impact of climate change on corals and their ecosystems.
A groundbreaking study found that marine reserves can restock fish populations in areas open to fishing. The research tracked the dispersal of baby coral trout and stripey snappers from reserve sites, finding that up to 30km away, a significant proportion settled on reefs open to fishing.
An international team of scientists assesses 163 grouper species and finds 20 at risk of extinction, while 22 are Near Threatened. Groupers take years to mature and are vulnerable to overfishing and habitat loss.
Herbivorous fish play a vital role in maintaining the health of coral reefs by limiting algae growth. A diverse supply of these fish provides strong 'insurance' against environmental fluctuations, reducing the risk of regime shifts towards seaweed-dominated reefs.
A new study reveals that ocean currents may mitigate warming near a handful of equatorial islands, including some in the nation of Kiribati. This finding has important implications for the survival of coral reef systems and provides hope for these at-risk Pacific islands to avoid the devastating effects of global warming.
Climate change could cause ocean currents to operate in a surprising way, mitigating the warming near Pacific island coral reefs. These islands may become isolated refuges for corals and fish, thanks to enhanced upwelling processes driven by the Equatorial Undercurrent.
A new study reveals that coral reefs will survive climate change by altering the mix of coral species as temperatures rise and oceans become more acidic. This shift could have significant implications for ecosystem services like reef tourism and fishing, with potential losses in biodiversity.
Research reveals that corals can adapt to changing ocean conditions by shifting species composition, which could help reefs survive climate change. However, this shift may lead to loss of habitat for fish and other marine life.
New research suggests that some corals and their symbiotic algae have an in-built mechanism to cope with ocean acidification. However, coralline algae and a large class of plankton appear vulnerable to rising acidity, posing concerns for marine life and the oceans' ability to absorb CO2.
Researchers attribute decline of Caribbean coral reefs to historical land clearing and overfishing, not climate change. The study used novel excavation techniques to reconstruct the timeline of historical change in coral reefs, finding damage from these activities occurred decades before climate-related damage.
Researchers discovered that corals surviving past heat stress are more likely to adapt in the future. The study suggests coral reefs may be able to withstand rising temperatures in locations with naturally variable water temperatures, benefiting millions of people reliant on coral reefs for sustenance and livelihoods.
Corals infected with Black Band Disease experience phototrophic zone and anoxic lower zone in tissue, leading to rapid lesion spread. Sulfide concentration and oxygen penetration determine disease progression.
A study by the Wildlife Conservation Society finds that co-management is a successful solution to global overfishing, with more than half of surveyed fishermen feeling it improved their livelihoods. The approach has also been shown to protect fish stocks and improve ecosystem health.
A study of 42 co-managed coral reef fisheries found that partnerships between government, conservation groups, and local fishers were successful in meeting the livelihood needs of local communities and protecting fish stocks. The research identified conditions for co-management success, providing vital guidance for conservation groups,...
Coral reefs face a global warming threat, but some species may be able to adapt. A study found that corals in Singapore and Malaysia survived severe bleaching despite high sea temperatures, suggesting they have adapted to thermal stress.
Research from the University of Bristol and Radboud University Nijmegen found that young French grunts are attracted to coral reef noises and muddy soft-sediment smells, but only visual cues of familiar fish guide them to their shoal mates. This hierarchical approach allows the fish to navigate safely in complex habitats.
A study on Kenyan reefs found that the loss of predatory fish leads to an explosion in sea urchin populations, damaging the reef structure and reducing crustose coralline algae growth. This reduces coral recruitment by lowering juvenile coral densities on fished reefs.
Researchers found that crown-of-thorns sea stars originate from local populations, rather than spreading across large distances via larval dispersal. Genetic analysis revealed significant genetic differences among reefs and habitats within the same island.