Articles tagged with Marine Conservation
Dolphins use acoustic cues to navigate and find food, with whistles associated with social behavior and echolocation linked to sound-producing fish. The study reveals distinct patterns in dolphin communication, suggesting dolphins favor different habitats for socializing and hunting.
Researchers investigated adding iron to the ocean to boost CO2 removal, finding varying effects on marine ecosystems. The Southern Ocean offers a favorable balance of climate impact and ecological consequences, while other regions face more severe consequences.
Researchers have identified Ruppia maritima as a resilient native seagrass species that can help restore degraded estuarine habitats. The species has a distinctive annual life cycle and a persistent seed bank, allowing it to persist through disturbance and regenerate when conditions improve.
Researchers combined fishing regulations and trade data to explore the complex global market for shark products. Despite significant regulatory efforts, no statistically significant effect on global trade was found.
Researchers have identified a hardy sea sponge that can thrive in polluted harbor habitats, demonstrating an exceptional ability to adapt and even reproduce asexually. The chicken kidney sponge showed outstanding resilience and was found to be particularly effective at filtering pollutants and recycling nutrients.
A new statistical model predicts which Red Sea fish species are likely to invade the Mediterranean, with a focus on their ability to survive without coral reefs. The study identifies three species with high potential to invade: stellate pufferfish, cinnabar goatfish, and yellowspotted trevally.
Researchers from the University of Tokyo used limpet shell analysis to reconstruct the journeys of tiny creatures between hydrothermal vents, finding they explore sunlit upper ocean during larval stage. This discovery helps explain how animals living at isolated vent sites can spread over hundreds or thousands of kilometers.
A USF study has identified South Florida as a crucial feeding ground for Atlantic tarpon, highlighting the importance of the region to the species' migrations. The research found that tarpon rely on distinct 'foraging landscapes' and can travel hundreds of kilometers to find food.
A single monitoring network developed by McGill University and partners detected multiple types of data in the Lower St. Lawrence, including underwater earthquakes, whale calls, ship noise, and tidal activity. The results show potential applications for conservation and marine policy.
Researchers found that nearly 90% of sharks collected from Delaware Bay were exported overseas, raising concerns about conservation goals. The study highlights the need for better scientific data and stronger oversight to ensure sustainable removals of critically endangered sand tiger sharks.
Scientists used clues from label data, chemical analysis of tiny shells, and ocean current simulations to trace the voyage of a plastic bottle cap. The study found 307 organisms, including a polychaete worm not found in Japanese waters before, highlighting the potential for micro-ecosystems to be transported over extended periods.
Researchers at Newcastle University have demonstrated that attaching discarded plastic bottles to fishing nets can reduce dolphin bycatch by 88%, while fish catch remains the same. The study found that plastic bottles act as sound reflectors, helping dolphins detect and avoid the nets.
Researchers found that long-term improvements in water quality, as well as increased occurrence of certain aquatic species, are associated with broad environmental regulations. Conservation policies have helped restore freshwater ecosystems and prevent extreme species loss, indicating the importance of protecting biodiversity and human...
A new study has unveiled a high-resolution global map of seagrass, revealing areas of loss and recovery, and providing valuable insights for conservation efforts. The map shows that seagrass ecosystems store approximately 640 trillion grams of carbon, equivalent to the yearly emissions of 500 million cars.
A team of researchers has conducted the first comprehensive exploration of Inútil Bay's underwater ecosystems, documenting 72 distinct macroalgal taxa. The survey revealed a diverse assortment of green, brown, and red algae, including rare and highly unusual specimens.
Researchers tracked Arabian Sea humpback whales' movements, revealing the first direct evidence of a whale crossing the Arabian Sea. The study found that these whales have adapted to their habitat in a unique way, deviating from traditional migration patterns.
A global study of over 5,100 species reveals that climate change is transforming ecosystems and threatening species across the globe. Temperate species are experiencing more local extinctions than tropical species due to faster warming rates, with temperate regions losing up to 49% of their species.
The FAU Queen Conch Mobile Lab has successfully hatched its first queen conch egg masses and juveniles, marking a significant milestone in the conservation of this iconic Caribbean species. The lab, designed to grow up to 2,000 juvenile queen conchs annually, will support restoration efforts throughout the region.
Researchers have digitally preserved the vaquita by scanning a complete skeleton and creating interactive 3D models. The technology enabled the team to capture microscopic skeletal details and make the information accessible to anyone, with the resulting models being made freely available through MorphoSource.
Researchers at Kyoto University used visual survey data to predict the most suitable habitats for humpback whales around Chichijima Island. The analysis revealed shallow water depths with gentle slopes as critical areas, supporting conservation efforts in the Ogasawara waters.
Researchers developed a machine learning framework to detect and classify shell-crushing sounds, enabling the quantification of predator impacts on mollusk populations. The system uses multi-step approaches and demonstrates strong performance in controlled tank conditions and field settings.
A recent study found that Caribbean reef sharks prefer locations with dense prey populations, making food abundance an essential factor in their habitat choice. The research suggests that prey conservation should be considered alongside fishing bans to support shark conservation.
A study found that scuba diving tourism causes frequent and often hidden damage to coral reefs, with most damage being unintentional or unnoticed. The research identifies factors such as underwater camera use, gloves, and peer behavior that contribute to reef damage.
Rising ocean temperatures cause corals to struggle with oxygen uptake due to disrupted ciliary motion. At moderate temperatures, corals accelerate ciliary motion to meet increased oxygen demand, but this compensatory mechanism fails at higher temperatures.
Scientists have documented humpback whales travelling over 14,000km between their breeding grounds in eastern Australia and Brazil, setting new records for the greatest distances ever confirmed. The findings highlight the value of citizen science and suggest climate-driven changes may be making such crossings more likely.
The ocean warming is causing a rapid shift from kelp forests to turf algae along the Maine coast, with increases in turf algae coverage up to 40% per year. The study reveals that these turf carpets are composed of diverse species, including invasive ones, and have distinct physiological characteristics.
Scientists found that meltwater destabilized methane hydrates beneath northwest Greenland, releasing large stores of methane. This process may have contributed to past climate events and could influence future climate change as polar ice sheets continue to retreat.
Researchers analyzed centuries-old Swedish newspapers to reconstruct past porpoise distribution patterns in the Baltic Sea. The study found that harbour porpoises once occupied a wider area than they do today, with a loss of about one third of their historic range. Historical records provide valuable insights for conservation efforts.
The HALLO project uses real-time acoustic and visual data, vessel tracking, and citizen-scientist reports to track and forecast Southern Resident killer whales' movements. The AI-powered system aims to support faster detection and more reliable classification of whales in shipping lanes.
A new study reveals that nitrogen enrichment is significantly reducing the abundance and variety of marine life in UK coastal ecosystems. The research found a strong association between higher nitrogen concentrations and a decrease in animal abundance and species richness.
A new report highlights the catastrophic risks of nature loss on food systems, economies and societies. Chronic pressures like soil degradation and water scarcity are already reducing crop yields and increasing food prices.
A study by ICTA-UAB reveals that the West African coast is a primary source of microlitter in the South Atlantic Ocean, with particles transported by equatorial currents to remote areas. The research highlights the need for global action to address this environmental issue.
A new peer-reviewed study finds that bottom trawling in European waters results in significant economic losses, with annual costs reaching up to €16 billion. The destructive fishing practice is also found to be a major contributor to climate change, with its impacts felt throughout the region's marine ecosystems.
A new acoustic device, PAL Wideband pinger, has been found to reduce harbour porpoise bycatch in the Black Sea by approximately 74%. The device's wider frequency band (10-150 kHz) is believed to contribute to its effectiveness. Effective strategies to reduce bycatch are urgently needed for the critically endangered species.
A new study introduces Map the Giants, a pioneering citizen-science initiative to document giant coral colonies before they disappear due to global pressures. The project aims to unlock genetic secrets and traits of resilient corals, providing a validated sampling frame for future research.
Researchers used 3D imaging and artificial intelligence to analyze the microscopic structure of coral skeletons, revealing subtle changes caused by Stony Coral Tissue Loss Disease. The study found that Attention U-Net performed best in detecting differences between healthy and diseased corals.
The partnership aims to boost conservation impact by harnessing advanced digital technology and biobanking techniques, focusing on three core areas: knowledge transfer, innovation, and student engagement. This collaboration seeks to address pressing environmental challenges such as biodiversity threats and emerging pathogens.
A new study provides a solutions-focused pathway to implementing the High Seas Treaty, highlighting the need for enhanced data resources and sharing. The researchers identify major scientific and technical developments that can help address challenges in biodiversity monitoring and connectivity between areas.
Removal of just 15 females from thresher shark populations annually could lead to population decline and even extinction. The study used stereo videography to monitor the population and found fragility in their behavior.
A new study using radiocarbon methods reveals that sea turtle shell plates are biological time capsules that record signs of major environmental disturbances in the ocean. By analyzing these layers, scientists can determine where turtles have been foraging and how marine environmental stress events affected them.
A 37-year study by the Smithsonian Environmental Research Center found that cannibalism is the primary killer of juvenile blue crabs in mid-salinity waters. However, young crabs can escape predation by migrating to shallow waters, where they are safer from adult crabs and other predators.
A new special edition of the Philosophical Transactions of the Royal Society B provides a comprehensive collection of peer-reviewed studies on disease management in marine wildlife. The issue examines emerging pathogens, methodological advances, climate change, and ecosystem-based management.
Researchers have discovered a new species of jellyfish, Malagazzia michelin, found in Japanese waters. The species has distinctive brown spots and a hemispherical umbrella-shaped body.
The discovery of mature silver European eels in Cyprus highlights the importance of river fragmentation and local environmental conditions on eel populations. The finding also underscores the need for urgent implementation of Eel Management Plans to conserve this critically endangered species.
A new study suggests that releasing pollack closer to their natural catch depths can significantly improve their chances of survival. The research found that releasing fish at these depths can increase survival rates from 56% to over 80%. This could have a positive impact on the long-term sustainability of recreational pollack fisheries.
A new study by Flinders University researchers reveals a significant decline in southern right whale reproductive output over the past decade, driven by prolonged calving intervals. The study found that declining breeding rates coincide with reduced Antarctic sea ice, changes in oceanic conditions, and broader ecosystem shifts.
Researchers used a novel nitrogen isotope method to reconstruct ancient reef food webs, revealing that modern reefs have shorter and less diverse food chains. This loss of functional diversity makes modern coral reefs more prone to collapse, highlighting the need for conservation efforts.
A field-deployable CRISPR-based biosensing platform has been developed for rapid, on-site monitoring of marine species and ecosystems, offering a sustainable solution for tracking ocean health. The technology has the potential to detect critical species, predict outbreaks, and support early warning systems for ecosystem disruptions.
Researchers at Florida Atlantic University have developed a patent-pending shark deterrent that can be used to reduce bycatch in fisheries. The device produces an electric field that repels sharks from bait without affecting target fish, and has been shown to reduce catches of coastal sharks by 62-70%.
The High Seas Treaty has been ratified by 61 states, but authors of a new book argue that international laws are insufficient to protect the ocean. Direct action, such as interfering with whaling operations or cutting fishing nets, is necessary due to lack of global enforcement.
Dr. Elva Escobar Briones receives the TOS Mentoring Award for her decades-long dedication to mentoring students, early career professionals, and colleagues in biological oceanography. She promotes equity, inclusion, and access to oceanographic training, particularly for underrepresented regions.
A new study reveals that giant clam populations in American Sāmoa are stable and abundant due to traditional community-based resource management. Village-managed closures outperform federally protected no-take areas, highlighting the effectiveness of cultural stewardship.
Young Caribbean manta rays swim with groups of fish, creating small ecosystems that support a variety of marine species. The study found that four families of teleost fish regularly associate with young mantas, including remoras and jacks.
Florida Atlantic University's College of Engineering has received a $600,379 grant to advance technology targeting harmful algal blooms in Florida's waterways. The project aims to develop novel 3D-printed adsorbent materials for efficient phosphate removal.
A new USF study found that tour boats and swimmers routinely violate Mexico's whale shark tourism rules, even when waters are less crowded. The research, based on drone footage from 2016 and 2022, suggests that the world's busiest whale-shark destination is struggling to manage demand, putting vulnerable animals at risk.
An analysis published in Environmental Research Letters found that Regional Fisheries Management Organizations (RFMOs) are underperforming and failing to meet their conservation goals. The study graded 16 RFMOs in 10 categories, with an average score of 46 out of 100, indicating a significant gap between performance and mandates.
Marine Animal Forests are complex habitats that provide essential ecological services, including biodiversity hotspots, nursery areas, and carbon cycling. Scientists urge immediate action to protect these ecosystems from destructive fishing practices, pollution, and climate change.
A comprehensive survey of the Eastern Tropical Pacific finds that remote Marine Protected Areas support abundant and diverse shark populations, including critically endangered species, whereas coastal areas display alarming declines in predator numbers. The study highlights the importance of strict protection for marine reserves to hel...
Researchers found that nutrients in lagoons are highest near the island, lower offshore, and linked to human activities on land. Precipitation acts as a key mediator for connections between land use and lagoon waters.
A new study finds that even Australia's most protected marine areas will likely suffer extreme climate shocks by 2040, threatening thousands of marine species. The effects will be widespread, with 'safe havens' disappearing as ocean conditions considered extreme today become the new normal.