Articles tagged with Marine Ecosystems
A global team of researchers found overwhelming evidence that human-made noise impacts marine life from invertebrates to whales, disrupting behavior, physiology, reproduction, and causing mortality. They identify actions to restore healthy ocean sounds and reduce noise levels in the shipping industry.
A study by Carlos Duarte and colleagues reveals that human-generated noise pollution is negatively affecting marine animals, altering their behavior, physiology, and survivability. The authors argue that mitigating these impacts through regulation of sources can rapidly decline harmful effects.
The MARLIT app uses deep learning techniques to detect and quantify floating plastics in the sea, achieving an 80% reliability rate. Researchers analyzed over 3,800 aerial images to develop this algorithm, which can aid in assessing plastic pollutants worldwide.
New findings published in Science Advances show that northern Tibetan mountain growth increased rainfall, leading to a stable, wet climate conducive to vast plant and animal diversity. The region's biodiversity hotspot, home to rare species like monkeys, tigers, and seals, relies on this unique climate.
A new study published in Science of the Total Environment reveals mangroves are significantly impacted by plastic pollution from rivers, with 54% of habitats within 20km of a polluting river. River deltas receive 52% of plastic pollution, while rocky shores receive only 6%
Researchers at North Carolina State University found that extreme weather events, such as hurricanes and increased precipitation, affect the amount and composition of tiny phytoplankton in the Neuse River Estuary. The study reveals a shift in concentration and population of picophytoplankton after storms, which could have long-term eff...
A comprehensive review of cephalopods in the Canary Current Large Marine Ecosystem has identified 138 species, including some recorded for the first time. The study expands on known distributions and sheds light on biodiversity, composition, and ecology of these marine animals.
Cold-water coral reefs in the Western Mediterranean have been growing almost continuously for 400,000 years, with major climate swings controlling their development. The study reveals that intense monsoon events also had a detrimental impact on these reefs.
Research found that some fish species exhibit larger gonads and increased reproductive output under elevated CO2 levels, leading to more offspring. Males and females adjust their behavior to optimize reproduction, with males foraging more and investing energy in egg care.
A new species of mosasaur with shark-like cutting teeth has been discovered in Morocco, highlighting the diverse range of predators that thrived in ancient seas. The discovery suggests that marine reptiles were expanding their diversity before they went extinct, contradicting previous assumptions about ecosystem decline.
A new paper introduces a management approach that uses transient dynamics to predict when species may become vulnerable or endangered. The tool helps identify potentially endangered populations and informs adaptive management strategies.
New research unlocks the mystery of the Galápagos Islands' unique ecosystem, revealing that local northward winds drive upwelling and nutrient injection to support biodiversity. The findings inform plans to expand the Galápagos Marine Reserve and improve its management against climate change.
A study published in Scientific Reports reveals that Posidonia oceanica seagrass can trap and remove significant amounts of plastic materials from coastal areas. Researchers estimate that up to 867 million plastics could be caught per year, with a density of 1,470 plastics per kilogram of plant fibre.
A new study reports the highest ocean temperatures since 1955, with the upper 2,000 meters absorbing 20 more Zettajoules than in 2019. The researchers warn of severe consequences for ocean ecosystems and human societies, including increased extreme weather events and wildfires.
New research found that baby sharks are born smaller, more exhausted, and undernourished when exposed to warmer ocean temperatures. The study, conducted by the ARC Centre of Excellence for Coral Reef Studies, suggests that this could lead to a decline in their ability to survive in environments already challenging for them.
The harbor porpoise population is declining in the German North Sea, with a decline of 1.79% per year reported over two decades. Conservation efforts are needed to protect the species, which has been affected by human activities at sea, including shipping routes and wind farms.
The study confirms that nutrient imbalance in northeast Asian waters is disrupting phytoplankton species and marine ecosystems. Nitrogen pollutant inflow since the 1980s has led to changes in oceanic conditions, particularly near Ieodo Ocean Research Station.
The Caspian Sea is projected to lose over a third of its surface area due to accelerating sea level drops, posing significant threats to unique ecosystems and millions of people living near the sea. Researchers urge immediate action to mitigate this problem, which could have devastating consequences like global sea level rise.
Researchers identified successful coastal 'bright spots' for marine ecosystem restoration, which have delivered positive impacts for decades. These examples from around the world showcase effective techniques for restoring saltmarshes, coral reefs, and seagrass meadows, highlighting potential solutions to save struggling marine areas.
The study found that five of seven SDG 14 targets are achievable with spatial management tools, such as marine protected areas and fully protected areas. Single-sector tools are not effective for all targets, while multi-sectoral tools facilitate the achievement of a wide range of targets.
A study by the University of Barcelona reveals that fishing hardens the understanding of how species adapt to their environment, with morphotypes differing in resource use and diet within marine reserves. Marine reservoirs are crucial for understanding original behavior before human intervention.
Plant communities shifted towards more terrestrial plants and trees, despite dramatic climate changes. Researchers found that rainfall patterns remained relatively minor and short-lived during the mass extinction event.
A team of international scientists led by Karine Kleinhaus warns of a potential massive oil spill from an abandoned tanker in the Red Sea, which could devastate the region's unique coral reefs and marine ecosystems. The Safer, a floating storage unit with over 1 million barrels of oil, is at risk of leaking into the sea.
Research finds common starfish can't survive amplified marine heatwaves projected at the end of the century and experience lasting negative effects from current heatwaves. Heatwaves can also negatively affect their feeding, leading to weight loss and potential ecosystem disruptions.
A new study mapped the geographic distribution of live corals across Hawaiian waters, revealing areas of degraded reef and 'refugia' where corals show resilience to human-driven environmental stressors. The detailed maps will inform conservation efforts and help protect coral reefs from critical threat levels by 2050.
The sunflower sea star, a key predator in kelp forests, has suffered a dramatic 90.6% decline due to sea star wasting syndrome, resulting in an estimated 5.75 billion animal deaths and nearly complete population loss in the contiguous US and Mexico.
A recent study by UC Santa Barbara and NOAA reveals that marine protected areas have little effect on mitigating the impacts of marine heatwaves on ocean ecosystems. The research found that the heatwave had a significant impact on fish communities within and outside MPAs, with non-targeted species being more responsive to the changes.
Researchers found that coral reef ecosystems can no longer retain deposits of calcium carbonate due to ocean warming and acidification, leading to accelerated erosion. By the end of the century, coastal protection will be lost, impacting infrastructure and communities.
Research reveals an aggressive golden-brown alga is rapidly overgrowing shallow reefs in the Caribbean, taking the place of damaged coral and exacerbating ecosystem damage. The invasive algal crusts harbor a distinct microbial community that deters coral settlement.
A new study proposes a cost-benefit analysis to guide the management of non-indigenous species in the Mediterranean, highlighting their potential benefits. The research suggests policy reforms for sustainable fisheries management, while also promoting commercial over-fishing and NIS-specific licences.
An international team of scientists is calling for a dedicated decade-long programme to greatly advance discovery in the remote regions of the world's oceans. The programme, named Challenger 150, aims to generate new data through global cooperation and application of new technology.
Researchers found that small, community-based reserves in Thailand's Salween River Basin serve as critical refuges for fish diversity. These reserves contain on average 27% more fish species and 124% higher fish density compared to adjacent areas.
Scientists at the University of Wisconsin-Madison discovered a new antifungal compound, turbinmicin, in the microbiome of a sea squirt from the Florida Keys. Turbinmicin efficiently targets multi-drug resistant strains of deadly fungi without toxic side effects in mice.
Recent measurements reveal a surprise increase in dense water sinking near Antarctica, following 50 years of decline. Changes in bottom water formation can impact global climate and deep ocean ecosystems. The study documents an increase in supply of bottom water to the Indian and Pacific Oceans.
The Red Sea climate modeling system provides high-resolution analyses of the region's oceanic and atmospheric processes, revealing connections with global climate patterns. The system helps predict extreme events like oil spills and informs environmental policymaking, renewable energy projects, and flood protection.
A University of Michigan-led research team found that toxic mercury pollution from fish carcasses reaches the deepest ocean trenches, including the Mariana Trench. The study suggests that most of this mercury comes from human activities, posing a threat to seafood safety and human health.
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 no ice and a surprisingly active ecosystem in the Bering and Chukchi seas, adding data to a key climate change record. The delayed cruise due to COVID-19 revealed unseasonably warm ocean temperatures delaying sea ice formation by several weeks.
Researchers found unusually warm water and an active ecosystem in the Bering and Chukchi seas, defying late-season expectations. The discovery highlights delays in sea ice formation supporting late-season biological production, and shifts in benthic animals' biomass.
A new study found that California's CalEnviroScreen program may miss eligible communities for climate adaptation funding. The researchers identified 348 additional communities that would be eligible under two alternative indices.
A multidisciplinary team will assess the significance of marine life to human societies during the last two millennia. The 4-OCEANS project aims to understand the consequences of marine resource exploitation for societal development, with a focus on informing the UN's Sustainable Development Goals and the Decade for the Oceans.
A new study found that seabirds' arrival in the Falkland Islands 5,000 years ago transformed the ecosystem through nutrient deposition, enriching the soil and driving changes in plant community structure. The research highlights the critical link between terrestrial-marine ecosystems and emphasizes the need for long-term monitoring to ...
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 analyzed long-term phytoplankton data to understand climate change effects on ocean productivity and biodiversity. The study found a significant increase in warm-water species, suggesting an adaptation advantage under changing conditions.
Marine predators consume more bait in mid-latitudes than near the equator, according to a new study. The researchers found that feeding intensity declines with increasing distance from the equator, and that warmer waters have little impact on bait consumption rates.
A 14,000-year peat record reveals an ecosystem shift after seabird establishment 5,000 years ago, driven by guano-derived nutrients. This study highlights the critical role of seabirds in terrestrial ecosystems and warns of potential consequences for their survival in a warming climate.
A 14,000-year paleoecological reconstruction found that seabird establishment led to changes in Falkland Islands ecosystems through guano deposition. This terrestrial-marine link is critical for grasslands conservation efforts, as nutrients from marine ecosystems enrich the islands' nutrient-poor soil.
A new study by a USC-led research team reveals that emissions from Chinese coal-fired power plants are fertilizing the North Pacific Ocean with iron and other metals, which could impact marine life. The researchers found peak iron concentrations in surface seawater corresponding to big wind events over east Asia.
Researchers from NC State and Cornell are developing a self-sustaining system that utilizes microplastics to capture and break down more microplastics. The system involves creating microcleaning particles that stick to microplastics, which are then broken down by microorganisms, producing chemicals with commercial value.
An all-female scientific coalition is advocating for a Marine Protected Area in the Western Antarctic Peninsula to mitigate the impacts of climate change on threatened species. The proposal aims to conserve and protect the unique ecosystem and its wildlife, including penguins, whales, and krill.
Krill experts recommend a new management system to address fluctuations in abundances, migration patterns, and environmental conditions affecting the species. The goal is to provide CCAMLR with the latest knowledge on krill stocks to ensure sustainable fishing practices.
A new study confirms that plastic pollution is a significant threat to seabirds in the South Pacific Ocean, with globally distributed impacts. The research found that seabirds ingest plastics from distant areas, highlighting the need for urgent solutions to this global problem.
A team of researchers led by Catie Strong identified a new mosasaur species, Gavialimimus almaghribensis, with a distinctive long, narrow snout and interlocking teeth. The discovery sheds light on the adaptations that allowed these ancient marine reptiles to thrive in competitive ecosystems.
A recent study by researchers at the University of Queensland found that nearly 80% of threatened species globally are not adequately protected, falling short of the 17% target for land and 10% target for oceans set by the Convention on Biological Diversity.
Red abalone energy provisioning and larval metabolism are strongly correlated with survival under ocean acidification. Ingesting lipids differently, they grew more slowly but survived higher rates under acidic conditions.
A recent report by the Journal of Operational Oceanography reveals an unprecedented rise in sea temperatures worldwide, with the Arctic Ocean experiencing the largest increase. The report highlights the impact of climate change on ocean ecosystems and calls for improved monitoring to ensure sustainable use of seas and oceans.
A new study finds that integrating terrestrial and freshwater conservation planning doubles protection of tropical freshwater ecosystems. This approach can increase freshwater species protection by up to 600% with only a 1% reduction in terrestrial species protection.
Research by Hokkaido University scientists finds that warming waters and sea ice-free conditions in the Pacific Arctic will lead to significant changes in marine community compositions. Larger fish and invertebrates are expected to expand their ranges towards the pole, altering ecosystem structure and functions.
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.
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.