Articles tagged with Marine Ecosystems
A new tool for forecasting coral disease has been developed by researchers from the University of Hawai'i, which can predict the risk of two diseases across reefs in the Pacific and Australia. This system can help managers detect early changes in the environment and take timely interventions to protect coral reef ecosystems.
A new study found that 62% of Marine Protected Areas (MPAs) designated to protect rare migratory fish species are outside of their core habitats. The study suggests that existing MPAs are not adequately protecting these species due to a lack of data on their distribution and habitat.
A study published in Royal Society Open Science reveals that corals use multiple environmental inputs to synchronize their spawning timing. Water temperature is identified as the primary trigger for determining the annual window of opportunity, with rainfall and solar radiation also playing a role.
A Texas A&M-led team has created the first global map of seafloor biodiversity activity, uncovering key environmental factors that drive burrowing animals' activities and ecosystem health. The research highlights the critical role these animals play in regulating carbon, nutrient, and biogeochemical cycles.
The study reveals that Antarctic minke whales switch companions frequently, forming short-term associations and engaging in both foraging and non-foraging activities. Larger individuals tend to socialize more, and this interaction correlates with reduced feeding efforts.
Researchers propose comprehensive strategy for climate-smart marine spatial planning (MSP) in the Southern Ocean, integrating diverse interests and addressing climate stressors. MSP can serve as a testbed for international waters, informing implementation of the UN Agreement on marine biodiversity beyond national jurisdiction.
A recent study by Oregon State University reveals that a surge in purple sea urchins is devastating kelp forests, reducing zooplankton populations and impacting the primary prey of gray whales. This cascading effect affects the top predator, causing them to spend less time foraging in the affected area.
Research in the Alaskan-Aleutian subduction zone found evidence of splay fault uplift generating additional tsunami activity in half of last eight earthquakes. Splay faults can create local tsunamis reaching shores in under 30 minutes, exacerbating coastal destruction.
A recent study by CNRS scientists analyzed the world's 100 largest MPAs and found that only a third of them offer real protection on a global scale. The study also reveals that unregulated and unmanaged areas account for a quarter of the surface area, with many MPAs allowing industrial activities incompatible with marine conservation.
A young sperm whale's long-range migration across the Mediterranean poses significant threats to its survival due to busy straits and pollution. The study demonstrates the need for targeted protection at key locations to safeguard marine life in the region.
A University of Rhode Island oceanographer's research cruise discovered a blanket of ash covering the seafloor around deep-sea hot springs in Tonga. The eruption from the Hunga volcano decimated animal populations living there, with some species like crabs and shrimp surviving while others like mussels and snails were extinguished.
A global study reveals progress in marine ecosystem-based management (EBM) initiatives, but acknowledges remaining impediments such as governance, stakeholder engagement, and technology. Experts emphasize the need for political will, persistence, and strategic marketing to overcome these challenges and accelerate EBM adoption.
New research reveals human activities alter marine organism preservation, improving or impairing the fossil record. Human actions can prevent useful information about ongoing changes and enhance the quality of the fossil record.
A new study by Chalmers University of Technology finds that ship scrubber water discharges caused EUR 680 million in pollution costs between 2014 and 2022. The researchers also found that most shipping companies have already recouped their investments in scrubbers, making cheap heavy fuel oil a more lucrative option.
The disease has devastated susceptible coral species, allowing fast-growing organisms like algae to thrive. This shift in ecosystem balance poses long-term threats to marine biodiversity and coastal communities, with potential benefits including reduced competition for herbivores.
A new study by scientists affiliated with the Woods Hole Oceanographic Institution found that human activities account for a substantial amount of toxic thallium in the Baltic Sea. The research suggests that the amount of thallium could increase due to further anthropogenic or natural activities, posing a concern for marine life.
Researchers developed nontoxic, biodegradable, and high-performing lubricant additives for water power turbines using ionic liquids. The ILs demonstrated significant reductions in friction and equipment wear compared to commercial gear oils.
A study by University of Hawaii researchers suggests that revitalizing Indigenous aquaculture systems, known as loko iʻa fishponds, can increase locally available seafood production. This revival has the potential to boost local food production and provide a sustainable solution to Hawaiʻi's seafood supply.
The lionfish species has significantly expanded its territory in the Mediterranean since its invasion began around ten years ago. Lionfish are generalist predators that impact ecosystems by preying extensively on local fishes, including endemics of high conservation value.
A new study by Stanford researchers explores the effects of different watershed interventions on coral health, finding that regional-scale approaches yield better results. The research identifies key areas for restoration, protection, and sustainable agriculture to support both ecosystem and societal benefits.
A new study from the Institut de Ciències del Mar highlights the potential of marine microbial populations as indicators of global change. The analysis of genetic diversity and population dynamics reveals substantial variability in marine microbial populations, with distinct patterns of differentiation and adaptation.
A new study found that 29 out of 78 endemic fish species haven't been reported in museum collections since 2010, with six considered of greatest concern. The researchers highlight the need for continued monitoring and conservation efforts to protect vulnerable species impacted by human activities.
A new study reveals that ocean acidification changes the mix of microbes in coral reef systems, which can be used as an early indicator of ecosystem stress. The research suggests a novel measurement approach by analyzing microbial communities alongside larger organisms.
A Dartmouth-led study found that people in New England, particularly those who frequently consume seafood, face an increased risk of PFAS exposure. The researchers recommend setting safety standards to limit seafood consumption and highlight the need for more stringent public health guidelines.
A new study reveals that corallicolids, thought to be only associated with tropical coral reefs, have been found in a variety of creatures in cold marine ecosystems along the Northeast Pacific. The discovery greatly expands our understanding of microbial biodiversity and highlights significant blind spots in current sampling approaches.
Researchers have discovered the first known nitrogen-fixing organelle within a eukaryotic cell, which challenges current understanding of biological nitrogen fixation. The discovery provides insight into ocean ecosystems and has potential implications for agriculture.
The Global Ocean Artificial Light at Night Network aims to expand on previous research, providing a central resource for marine light pollution expertise. Light pollution poses significant ecological harm, including disruptions to daily rhythms and reproductive cycles of marine species.
Researchers from the University of Oldenburg aim to propagate stony corals via natural reproduction and grow out young corals in aquaria for a more sustainable coral trade. If successful, this method could boost wild coral protection and reduce reliance on expensive export restrictions.
Deeper areas of the Great Barrier Reef are insulated from harmful heatwaves due to separation between warm surface water and cooler deeper water. However, this protection will be lost if global warming exceeds 3°C above pre-industrial levels, threatening coral mortality and reef collapse.
A recent study published in Environmental Microbiology uses eDNA to analyze coral reef microbial communities, providing near-real time insights into ecosystem health. The research found that microorganisms can capture and predict stony coral tissue loss disease and hurricane disturbance impacts on US Virgin Island reefs.
Despite being in place to rebuild fish populations, marine protected areas have flatlined or declined adult fish populations. Strong enforcement and climate-friendly design are crucial for their success.
A mathematical model estimates iron fertilization's potential costs, ranging from $7 to $1,500 per ton of carbon removed. The study also explores the impact of verification methods and aerial delivery on costs.
Researchers found a 100-million-year-old endoparasitic marine tapeworm fossil in Kachin amber, providing new information on the early evolution of tapeworms. The discovery shows that amber can preserve internal structures of helminths like tapeworms, shedding light on their taphonomy.
A study by Florida Atlantic University researchers found that severe hurricanes can increase the recovery of coral reef sponges by boosting the influx of juveniles and promoting gene flow. Genetic analyses revealed that populations of clonal marine species may benefit from increased frequency and magnitude of hurricanes to maintain gen...
Two well-known killer whale ecotypes in the North Pacific Ocean have been identified as separate species through genetic and behavioral evidence. The resident and Bigg's killer whales have distinct physical characteristics, diets, and cultural habits, justifying their recognition as distinct species.
Researchers from Project Seahorse analyzed 7,794 validated iSeahorse observations from 96 countries, revealing new information on sex ratio and pregnancy seasonality. The study found that many seahorse species have larger geographic ranges, more diverse habitats, and shallower depth ranges than previously known.
Salps are found to control microbial community structure and function by capturing a variety of microbe types, including Prochlorococcus. The study reveals that simple mechanical principles do not explain cell capture by salps, indicating a complex mechanism at play.
A recent study by UFZ and AWI researchers found significant accumulations of plastics in the North Pacific Ocean, extending far beyond the Great Pacific Garbage Patch. Microplastics were also discovered in a remote marine protected area northwest of Hawaii, challenging previous assumptions about their distribution.
The European Union has launched the €5.5 million SEA-Quester project to investigate carbon cycling in novel marine polar ecosystems due to climate change. The project aims to improve understanding of 'polar blue carbon' through field observations, remote sensing, and modelling.
Researchers warn of devastating impacts of Olympic tower construction on coral reef habitat and local economy in Teahupo’o, Tahiti. The study found that the site supports a thriving coral community worth at least $170,000, with potential economic losses estimated at $1.3 million if the reef is damaged.
A new study reveals that marine heat waves disrupt the ocean food web in the northeast Pacific Ocean, shifting energy and impacting predators and prey. Gelatinous zooplankton thrive during heat waves, drawing energy out of the ecosystem and potentially affecting fish and marine mammals.
A new study on sea anemones sheds light on the complex relationships between predators and prey in marine ecosystems. The research found that a native population of anemones lacking a key neurotoxin exhibited weakened defensive abilities, while its presence attracted natural predators of grass shrimp.
A new study identifies ten key components to promote sustainable, equitable, and climate-smart ocean planning initiatives worldwide. The proposed components include foundational principles and operational pathways that aim to support marine managers and planners in developing climate-smart ocean plans.
The Belt Sea population of harbour porpoises is declining at a rate of 2.7% annually due to by-catch, deoxygenation, pollution, and lack of fish. Limiting net usage or using acoustic alarms on nets could be an immediate solution to mitigate the issue.
Researchers develop novel system to study coral skeletons, enabling climate-resilient coral polyp development. A gene from the stony coral Stylophora pistillata is used to induce calcium concentration and skeleton formation in a sea anemone.
A new study has identified the role of microbes in regulating coral thermal bleaching susceptibility, revealing that heat-tolerant Symbiodiniaceae dominate microbial communities on Huangyan Island. Increased fungal diversity and pathogen abundance are associated with higher coral thermal bleaching susceptibility.
A new study reveals that tropical herbivores moving into subtropical waters are at risk of overgrazing seagrasses, which could lead to the decline of these vital habitats. To mitigate this, researchers emphasize the importance of protecting water quality and providing sufficient light for seagrasses to thrive.
Researchers studied Prorocentrum cordatum to understand its molecular processes, revealing a unique photosynthetic machinery that may help it adapt to changing light conditions. The findings could lead to improved understanding of harmful algal blooms and their role in climate change.
Climate models suggest Arctic sea ice will slow down during summer seasons, potentially reducing hazardous conditions for marine transportation, but still posing concerns for ecosystems and global climate change. A York University study found that while the slowdown is plausible, questions remain about its timing.
Paleontologists have discovered a new species of marine lizard with dagger-like teeth that lived near the end of the age of dinosaurs. This finding highlights a dramatically different ocean ecosystem to what we see today, with numerous giant top predators eating large prey.
Researchers observed an individual orca, nicknamed Starboard, killing a 2.5-meter juvenile great white shark within two minutes. The study challenges conventional cooperative hunting behaviors among killer whales, providing new insights into their predatory dynamics and potential impact on marine ecosystems.
Scientists studied thousands of public photos to track humpback whale populations, finding they're responding to food availability changes affected by climate change. The population declined by 7,000 individuals from 2012 to 2021 due to a massive marine heatwave and reduced prey.
Sea cucumbers, known as the 'janitors' of the ocean, have been found to be a missing component in maintaining healthy coral reefs. Their removal due to overfishing has led to an increase in coral disease and a decline in biodiversity.
Local fishers in Mexico's Gulf of California respond to climate challenges through self-governance and organizational structures, with cooperative fishing organizations adopting conservation measures for specific high-value species. The study reveals tradeoffs between specialization and adaptability, suggesting that social structures c...
A study by the University of Barcelona and ICM-CSIC highlights the scientific rigor of citizen science initiatives assessing coral and gorgonian populations. The results show improvement in data quality and reveal worsening conditions in these species across the north-western Mediterranean.
Researchers have made groundbreaking discoveries about the reproduction of giant Antarctic sea spiders, a phenomenon known as polar gigantism. The study found that these creatures do not carry their young like most other species, but instead attach them to rocks for several months before hatching.
Researchers have discovered microplastics and cellulose-based fibres in the intestine samples of four apex shark species caught off the coast of South East Queensland. The study found that 82% of analysed intestine samples contained microplastics, with a mean abundance of 31 particles/kg of samples.
Scientists have identified ocean viruses that can help trap carbon dioxide in seawater, using similar techniques to prevent methane's escape from thawing Arctic soil. The study reveals which viruses target the most important reactions in microbial community metabolisms.
Researchers used underwater drones to collect eDNA from mesophotic corals, identifying genera and habitats. The study suggests faster and easier monitoring of coral reefs using eDNA metabarcoding methods.
Scientists have discovered that tiny crustaceans, such as amphipods, prey on both living and dead jellyfish during the Arctic polar night. The study, published in Frontiers in Marine Science, found that these crustaceans shift to an omnivorous diet during this period, utilizing jellyfish as a key food source.