Articles tagged with Coral Reefs
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A world-first study examining the Great Barrier Reef's management found that people are managed at broader scales than ecological variation, suggesting a general principle for permitting and management. This approach may be more effective in sustainably managing ecosystems, especially small protected areas.
A global research study has identified successful coral reef restoration projects that combined local community engagement, tourism support, and trained local fishermen or divers. These collaborative efforts resulted in high coral survival rates, increased coral cover, and socioeconomic benefits for surrounding communities.
A new study reveals that marine angelfish exhibit the highest incidence of hybridization among coral reef fish, with nearly half of all known species creating hybrids. The research found that angelfish can hybridize even between distantly related species and across vast genetic distances.
Researchers found that small fish on hot Arabian Gulf reefs are less diverse and abundant than those on cooler reefs, despite similar coral cover. The thermal extremes may be an energetically challenging environment for these smallest marine vertebrates.
A team of researchers from the University of Córdoba has developed an algorithm that simulates the behavior of coral reefs to optimize space in industrial plants. The algorithm takes into account various factors such as distribution, material movement, noise reduction, and proximity, resulting in improved efficiency and cost savings.
A recent study found that noisy boats and ships can affect the prey response of young fishes, leading to decreased activity and reduced swimming distance. This can result in slower escape responses and increased mortality rates among juvenile reef fish.
Researchers found that coral reefs in the ETP region have adapted to heat stress, with some recovering within 10-15 years after El Niño events. The study suggests that ETP corals' high reproductive rates, tolerant symbiotic algae, and geographical patterns may contribute to their resilience.
A study found that national governments resist World Heritage 'in Danger' listings despite the sites being equally or more threatened than those already on the list. Low visibility strategies and industrial lobbying are prevalent in blocking environmental governance.
A new study from Columbia University provides a blueprint for using genomics to help combat climate change by identifying corals that can adapt to warmer seas. Researchers analyzed genetic data from 237 samples collected at 12 locations along the Great Barrier Reef, finding multiple genetic variants associated with bleaching tolerance.
Research has found that nearly all water samples from 15 waterways discharging into the Great Barrier Reef lagoon contained pesticide mixtures, with up to 20 pesticides present in some samples. The study emphasizes the need for improved pesticide management practices among land managers and farmers to reduce losses to waterways.
Researchers from Arizona State University found that coral outplant survival drops below 50% if sea surface temperatures exceed 30.5 degrees Celsius, highlighting the importance of considering temperature conditions in reef restoration efforts.
Researchers used El Niño and Pacific Decadal Oscillation to predict coral bleaching and crown-of-thorns starfish events up to 5 months in advance, providing more time for proactive reef management. This tool may help islands become better equipped to handle these forces.
Researchers from OIST Graduate University discovered the crown-of-thorns starfish's evolution, shedding light on its population changes and potential threats to coral reefs. The findings suggest complex ocean currents in the Ryukyu Archipelago may aid the survival of the larvae.
A recent study found that tropical reefs are driven by bottom-up forcing, while temperate reefs are more influenced by top-down forcing. Marine reserves increased predator populations in both tropical and temperate regions.
Scientists found impressive reefs with diverse coral communities but few fish, particularly near coastal communities. The research provides critical baseline data to monitor changes and inform management plans for conservation.
A new study reveals that two key species of Australian aquarium corals are particularly susceptible to bleaching due to recurrent heatwaves. The study's findings emphasize the need for targeted in-situ monitoring to ensure the long-term sustainability of the coral industry.
Researchers at KAUST used high-resolution modeling to show coral reefs play a crucial role in reducing wave heights by half along the Red Sea coastline, enabling safer coastal construction and reduced fill material costs.
New research suggests coral reef islands can respond to sea level rise by evolving through natural processes, potentially supporting near-term habitability. Islands composed of gravel material can raise their crest as sea level rises, with additional management challenges involved.
A new study highlights the critical role of mangroves and coral reefs in protecting coastal communities from climate-related disasters. With over 8.5 million people benefiting directly from these natural defenses, conservation and restoration efforts are essential to address growing vulnerability across highly exposed regions.
A new study found that the diets of reef fish dictate how fast different species evolve, with big vegetarian fish driving biodiversity. The study's authors built an evolutionary tree of life for nearly all fishes associated with reefs, examining variation in rates of species formation and asking what drives it.
The report found many coral reefs to be in surprisingly good health, with abundant and diverse coral and fish communities. Reefs far from shore or protected in Marine Protected Areas were in particularly good condition, but nearshore reefs showed signs of fishing pressure.
Research reveals that cyclones can cause significant damage to coral reefs as far as 1000 kilometres away from their paths. The study found that Scott Reef lost 50% of its Porites corals and virtually all its Acropora coral species due to Cyclone Lua's high seas.
Researchers found that corals producing a 'sunscreen layer' can encourage symbionts to return, boosting recovery prospects. Colourful bleaching events occur in association with brief or mild heat stress episodes.
A new study reveals that strong relationships between diversity and a healthy ecosystem persist, even in stressed reefs. However, human-driven pressures from warming oceans and invasive species continue to diminish ecosystems.
A study using fish poo and gut contents found that 18 coral reef fish species consume young or adult crown-of-thorns starfish on the reef. This discovery could help control destructive pest populations and shed light on why some reef areas have fewer starfish than others.
A study by Kris Karnauskas found that a marine heatwave followed by a terrestrial one, exacerbated by global warming, led to the massive coral bleaching event. The warm water persisted for months, causing extensive damage to the ecosystem and drastically changing species composition.
The University of Guam has secured a five-year, $20 million grant from the National Science Foundation's EPSCoR program to enhance its research capabilities on coral reef survival. The project aims to understand the evolutionary and ecological processes that drive resilience in coral reefs under climate change stress.
Research on the Great Barrier Reef found severe coral loss is associated with increased biomass and productivity of large, long-living herbivorous fish. However, decreased recycling of this biomass could leave the ecosystem vulnerable to crashing.
Researchers found that coral reefs in Panama's Caribbean coast suffered significant declines in species diversity and abundance after a 1986 refinery accident. Thirty years later, the impacts of coastal development and human-related stressors on reefs were comparable to those of oil spills.
A new study finds that climate-driven transformations render marine reserves ineffective in protecting biodiversity and fish biomass. Marine reserves still protect some species, but conservation efforts require re-evaluation. Urgent action is needed to reduce greenhouse gas emissions and mitigate other pressures.
The Caribbean coral reef decline began in the 1950s and 1960s due to local human activities such as fishing and land-clearing. Researchers used fossil data, historical records, and underwater survey data to reconstruct the abundance of staghorn and elkhorn corals over the past 125,000 years.
A new study analyzed 1,800 tropical reef sites worldwide to understand conditions for maximizing reef health and biodiversity. The findings suggest that high conservation levels can support all three key ecological metrics when human use is low, but become increasingly challenging with increased pressure.
A recent study found that only five percent of tropical reefs globally can meet multiple goals, including providing enough fishing stocks and maintaining biodiversity. Marine reserves placed in areas with low human pressures had the best results for helping reefs get on the 'A-list', meeting all goals simultaneously.
Researchers have developed 3D-printed coral-inspired structures that can grow dense populations of microscopic algae, opening up new applications for coral conservation and bioenergy. The innovative technology mimics the symbiotic relationship between corals and algae, with microalgae producing sugars to the coral through photosynthesis.
The Great Barrier Reef has suffered its third coral bleaching event in just five years, with the most recent event being the worst. Severe bleaching has struck all three regions of the reef, causing widespread damage to coral habitats.
A new study found that human-induced environmental stressors reduce coral reef populations' genetic diversity, compromising reef resilience. The research identified an adaptive response by corals to watershed discharges containing sediment and pollutants, leading to closer genetic relationships between nearshore corals.
New study reveals ocean deoxygenation as a critical factor in coral reef degradation, highlighting the need for improved data collection and management practices. Researchers warn that reduced oxygen availability exacerbates the impact of climate change and pollution on reefs.
A new framework will help marine scientists design more accurate experiments to understand the impact of global warming on marine life. The framework provides a simple way to select future CO2 levels and temperature for experiments, taking into account regional variability and local conditions.
A study led by HKU marine biologist Dr Celia Schunter reveals that reef fishes are directly affected by heatwaves, but their responses vary greatly among species. The research tracked the molecular response of five species to the 2016 heatwave conditions on the Great Barrier Reef.
A recent study found that heatwaves have varying effects on different fish species, with some struggling more than others. The research tracked changes in gene expression in five coral reef fishes before, during, and after a severe marine heatwave, revealing species-specific responses to the heightened temperatures.
Researchers studying coral reef fish found species-specific physiological responses to warming temperatures, influenced by heatwave intensity and duration. The study's results signal potential long-term consequences for fish fitness and ecosystem health.
A new study finds that soft corals in the US Virgin Islands have recovered from Category 5 storms, but stony coral populations are declining dramatically. The resilience of soft corals is an important development, but they cannot replace the hard physical structure of reefs.
Research links ENSO climate pattern to detrimental impacts on Southeast Asian coral reefs, revealing long-term environmental changes. Coral cores provide a critical record of local changes in river runoff and rainfall, highlighting the need for resilience to future environmental changes.
Research reveals large ecosystems like Amazon forests can collapse in 49 years and Caribbean coral reefs in just 15 years. This accelerated rate of transformation is attributed to the modular structure of larger ecosystems, which initially provides resilience but ultimately accelerates unraveling when a threshold is passed.
The Red Sea's coral reef, critical to the region's ecosystem, is resilient but vulnerable to climate change. The researchers call for UNESCO recognition and coordinated conservation efforts to protect the reef.
Scientists from the Global Reef Expedition found that many coral reefs in the Cook Islands were in good shape, with high coral cover and diverse fish communities. However, Aitutaki's corals were being ravaged by a crown-of-thorns starfish outbreak, causing significant damage to the reef ecosystem.
Researchers discovered a 7,000-year-old fossilized coral reef that predates human settlement and closely resembles its pre-human state. The team found the reef to be resilient, with minimal changes over centuries, despite current environmental degradation.
New research suggests that rising sea surface temperatures and acidic waters could eliminate nearly all existing coral reef habitats by 2100. The study found that few to zero suitable coral habitats will remain by 2100, with only small portions of Baja California and the Red Sea being viable locations for coral reefs.
Long-standing human stressors like agricultural run-off and overfishing have contributed to coral reef die-offs. Coral communities were being transformed by human activities much earlier than previously thought, according to recent studies.
A new study reveals that rapid urbanization and poor waste management are the primary causes of coral reef loss in the South China Sea. The research, led by HKU marine ecologists, used geochemical techniques to analyze coral skeletons and found a significant increase in nitrogen pollution coinciding with Hong Kong's rapid development.
The Global Reef Expedition found that coral reefs in Tonga were moderately healthy, but fish communities needed attention. The report highlights the importance of marine conservation and recommends expanding management efforts to protect fish resources.
A new study reveals that tropical forests and coral reefs are being threatened by a combination of ongoing climate changes, increasingly extreme weather, and damaging local human activities. The research highlights the urgent need for international action to decrease CO2 emissions and reverse this trend.
Researchers found that existing marine reserves need to be much larger to conserve shark populations, with reserves extending between 10-50km required for significant improvements. This study provides options for managers to address declines in shark populations and ensure healthy oceans.
Scientists discovered dozens of new coral species during a recent expedition along the Great Barrier Reef, revealing that much of existing classification is deeply flawed. The team's findings suggest that biodiversity may be up to three times higher than previously thought.
Research suggests that maintaining a healthy size distribution of parrotfish in sea floor ecosystems is crucial for coral reef health. Experiments show that large parrotfish play a key role in controlling algae growth, and selective fishing practices could lead to an overgrowth of algae if these larger fish are removed.
A new study reveals that ocean acidification has no direct impact on the behavior of coral reef fish, contradicting previous high-profile studies. The exhaustive analysis, led by Université de Montréal researchers, found consistently normal behaviors in fish under predicted end-of-21st-century CO2 levels.
A comprehensive multi-year study challenges previous findings that ocean acidification will negatively impact coral reef fish behavior. The research found that CO2 levels expected by the end of the century have a negligible impact on fish activity levels and ability to avoid predators.
A new study by Simon Fraser University reveals that sea levels in the central Indian Ocean have risen by nearly a meter over the last two centuries. The research provides new insights into historical sea level variability and its impact on coral reefs and islands.
A comprehensive study of French Polynesia's coral reefs has been conducted, revealing the healthiest reefs are found around islands with low elevation. The study also found that cyclones and crown-of-thorns starfish outbreaks have decimated reefs in some areas.
A new social-ecological systems monitoring framework has been implemented to uncover drivers of coral reef conservation success, incorporating both social and ecological indicators. The framework, developed from Elinor Ostrom's work, sheds light on local coral reef management contexts, resource use, and stakeholders' perceptions.