Articles tagged with Coral Reefs
Researchers discovered a significant decrease in chemical diversity and quantity of gases released by corals during heat stress experiments, indicating potential impacts on coral resilience. The study highlights the importance of understanding the 'smell' of corals as an indicator of reef health.
A recent study sequenced genomes of 150 individual coral colonies to understand the evolution and survival of the Great Barrier Reef. The researchers discovered genes that rapidly evolved to endure changing conditions, including a set of genes that developed over the past 10,000 years.
Researchers Alli Cramer and Stephen Katz identified two key variables: gross primary production and substrate mobility, which sort biomes by their energy flow and ocean floor movement. This new classification system sheds light on the diversity of marine environments and highlights areas where human actions may impact ecosystem function.
The new report projects that all world's coral reefs will experience severe bleaching annually by 2034 under the most aggressive scenarios. Coral reefs in some countries, such as Indonesia and Malaysia, are projected to have temporary refugia, but many will face significant exposure to annual severe bleaching conditions.
Researchers have identified key genes that help corals respond to low oxygen levels, but found variability in sensitivity among species. This discovery may inform novel diagnostics and breeding efforts for improving reef resilience.
Researchers used genetic analysis and satellite data to identify coral populations better equipped to withstand rising temperatures. The study found correlations between prolonged exposure to high heat stress and climate-adaptive traits, supporting hypotheses of connectivity and adaptation.
Researchers found that artificial light pollution affects coral reproduction, causing delayed gametogenesis and unsynchronized gamete release. The study suggests that natural periodic illumination is crucial for cueing spawning synchronicity and the gametogenic process.
Coralline red algae have formed a calcareous skeleton to support coral reefs for at least 150 million years. However, their role was only proven through the analysis of over 700 fossilised reefs from the Earth's history.
A recent study on the Great Barrier Reef reveals that crown-of-thorns starfish can navigate back to their shelters at dawn after feeding on corals at night. The research found that only starfish with a well-stocked larder, meaning they have an ample supply of coral prey, were able to find their way home.
A new study finds that Hawaiian corals' diversity is driven by co-evolution between the coral host, algal symbiont, and microbial community. The team analyzed metagenomic sequencing data to understand adaptation and variation in corals.
Researchers at Arizona State University have generated a global coral reef extent map using advanced AI, predicting the location of shallow reefs with nearly 90% accuracy. The map was created by analyzing thousands of satellite images and is now available through the Allen Coral Atlas.
A titan triggerfish was observed catching a Red Sea ghost crab in shallow water without beaching itself. This unique behavior highlights the fish's ability to learn and adapt its feeding strategy.
Scientists from the Khaled bin Sultan Living Oceans Foundation found Palau's coral reefs to have exceptionally high live coral cover, exceeding 45%, and species diversity. However, reef fish communities were found to be lacking, with many big fish missing and signs of overfishing observed on nearshore reefs.
A study published by FSU researchers found that coral reef mats are composed of diverse microbial communities, including cyanobacteria, algae, fungi, and viruses. The discovery opens up new avenues for understanding the ecological role of these mats and how to protect reef ecosystems.
The Great Barrier Reef has lost half its corals in the past three decades, with small, medium, and large coral populations declining by more than 50 percent. This decline is driven by climate change, which is causing record-breaking temperatures to trigger mass bleaching events.
A survey of 4,285 Australians found that only a few percent mentioned climate-related actions to help protect the reef. Instead, respondents emphasized the importance of reducing plastic consumption and suggested public-sphere actions such as banning sunscreens or stopping commercial fishing.
Scientists have developed a world-first method to detect 'novel' communities of species, which are associated with increased extinction rates. Novel ecological communities are characterized by unique combinations of species that differ from past observations at the same site.
Researchers found that a network of marine reserves replenishes exploited fish stocks while minimizing risk to ocean ecosystems. This approach stabilizes reserve performance, providing a reliable source of larval offspring.
A study by Dr. Hugo Harrison found that connecting marine reserves through a 'portfolio' approach can provide reliable quantities of fish across an ecosystem. This approach supports more fish, which then produce even greater numbers of baby fish, ultimately stabilizing fish populations.
Research reveals coral reef ecosystems collapse under rapid fishing pressures due to positive feedback between fish behavior and ecosystem sensitivity. The study highlights the importance of understanding the social component of individual fish in managing coral reefs for sustainable harvest levels.
A study suggests that deep-sea coral reefs are at risk of collapse due to increasing ocean acidity caused by rising levels of carbon dioxide. The underlying structures of the reefs become brittle and fragile, leading to early breakage and crumbling, ultimately shrinking the ecosystems.
Researchers have developed a new genetic tool to classify corals, challenging over 200 years of traditional classification. The study reveals new insights into coral evolution and identification, providing crucial knowledge for conservation efforts and proposal assessment.
A study published in Coral Reefs finds that materials in seawater affect light availability and wavelength on coral reefs, impacting photosynthesis and ecological zonation. Researchers used an instrument called a profiling reflectance radiometer to collect data profiles across Hawaiian and Bermudian reefs.
Removing marine plastic litter from Aldabra Atoll could cost US $4.68 million and require 18,000 hours of labour. The study highlights the economic burden on small island states to protect their marine ecosystems.
Researchers from Australia and international partners discovered five undescribed coral species, including black corals and sponges, and recorded a rare fish in the Coral Sea. They also collected critical habitat samples to improve understanding of seabed features and marine ecosystems.
Researchers developed a dipstick test that detects crown-of-thorns starfish by measuring specific DNA in seawater, allowing for early detection of coral-eating pests. The test can detect very low numbers of the pest, supporting an early warning and intervention system.
A study by the University of Sydney found that the calcified scaffolds in the Great Barrier Reef become thinner and weaker as pH levels drop, indicating a risk to reef stability. This 'glue' can now be used as an accurate measure for historic ocean acidification.
Researchers from the University of Queensland have found that 'dead' coral rubble supports more animals than live coral, revealing a new understanding of these often-overlooked habitats. The discovery highlights the importance of biodiversity in these areas, which are dominated by tiny invertebrates and microorganisms.
Researchers find significant decline in coral skeleton density due to ocean acidification on the Great Barrier Reef and South China Sea. This effect will likely accelerate as ocean acidity increases over the next several decades.
Effective solutions to climate change threaten coral reefs require prioritization challenges, weighing quality versus quantity, and species selection. Coordinated interventions combined with best-practice management are necessary to sustain the reef's resilience.
A UBC Okanagan researcher has developed an agent-based model to simulate the behavior of coral reefs and identify traits that contribute to their resilience. This will help design reef management and restoration strategies to stem losses and ensure the long-term health of coral ecosystems.
Researchers found that a video about coral reefs had less willingness to pay among audience members compared to those shown a slideshow with text and photographs. The study highlights the importance of information type and amount in science communication.
Researchers developed a new way to measure habitat complexity, which is crucial for understanding biodiversity and conservation status. The method uses three metrics: rugosity, fractal dimension, and height range, and can accurately predict the distribution of biodiversity in complex ecosystems.
Researchers have discovered that nutrients exacerbate the negative impacts of climate change on corals, increasing the risk of mass coral bleaching. High levels of nutrients stress corals, making them more susceptible to heat-induced bleaching.
Researchers have discovered that pumice rafts are delivering a surge of new coral and reef-building organisms to the Great Barrier Reef, boosting its health. The rafts, formed when frothy magma cools rapidly, carry a diverse array of marine life across thousands of kilometers.
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.
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.
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.
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 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.
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 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.
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.
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.
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.
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.
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.