Articles tagged with Marine Ecosystems
New research using satellite technology tracks the movement of albatrosses and petrels, finding that they use sea ice-affected parts of the ocean for feeding and scavenging. The study suggests that Antarctica's shrinking sea ice could force seabirds to travel further or alter their food patterns, affecting ecosystems.
A recent study has found that the Florida Current, a key component of the Atlantic Meridional Overturning Circulation (AMOC), has remained remarkably stable over the past four decades. The researchers used measurements from a decommissioned submarine cable and hydrographic surveys to correct for changes in the geomagnetic field.
Researchers found a pregnant porbeagle shark was likely killed by a great white shark, highlighting the complexity of shark interactions. The study used satellite tags to track the shark's movements before it stopped transmitting, indicating it had been hunted and eaten.
A new study quantifies the impact of the Messinian Salinity Crisis on Mediterranean marine biodiversity, revealing a drastic reduction in species, with only 86 of 779 endemic species surviving. The crisis took over 1.7 million years to recover from, highlighting the long-term effects of ecological crises on biodiversity.
Researchers at Boston University discovered that deep-sea rocks, called polymetallic nodules, produce oxygen through a process known as seawater electrolysis. This phenomenon creates 'dark oxygen' without sunlight, contradicting the long-held assumption that oxygen is only produced by plants and organisms with photosynthetic capabilities.
Researchers call for a rethink of environmental decision-making to consider foreseeable harm and integrate key scientific and ecological evidence, including local community knowledge. The update aims to address biodiversity loss as a human rights issue and align with advances in international human rights law.
The ocean's twilight zone plays a crucial role in regulating marine phytoplankton productivity, which is essential for the marine food chain. Researchers have found that warming temperatures can strengthen the recycling of nutrients between the ocean layers, with significant implications for climate change projections.
Researchers at Uppsala University studied Northern krill and found extensive genetic variation critical for adaptation to different climates. The study identified hundreds of genes associated with heat and cold sensitivity, nutrient uptake, and reproduction.
Researchers found that floating objects can reach Antarctic waters from more sources than previously thought, threatening the continent's unique ecosystems. Non-native marine species can colonize Antarctica by catching a ride on kelp, driftwood, and plastic debris.
Researchers will develop an AI-driven system for photo-identification and tracking of Florida manatees, optimizing the cost-precision trade-off in traditional tracking methods. The project aims to streamline conservation efforts while providing essential information on population dynamics, health, risks, and vulnerability.
Researchers found the US can meet its entire seafood demand through domestic production, but current exports and imports limit self-reliance. Increasing consumption of lesser-exported species like herring and anchovy could strengthen the domestic supply and contribute to a more sustainable food system.
New research reveals a dangerous combination of warming waters and nutrient overload is degrading freshwater ecosystem functioning. This simplification leads to shorter food chains and vulnerable top predators, emphasizing the urgent global need to reduce pollution levels.
A UK-based study reveals that an offshore mussel farm is reviving shellfish reefs off the English south coast, a process previously unseen in 150 years. The research found mussels deposited on the seabed create habitats for commercially important species like European lobsters and brown crabs.
Researchers detected a 24-hour cycle of diving during the spring, with whales swimming deepest in the afternoon to track prey. Two bowhead whales were found to dive in synchrony over a week at a time, even when separated by up to 100 km.
A study by ETH Zurich scientists found that global warming's effects on plant recovery can last for thousands to millions of years. The research team discovered that the severity of climate shifts and the speed at which carbon is sequestered affect the duration of climate warming.
Scientists equipped Australian sea lions with cameras and analyzed the footage to identify six benthic habitats in southern Australia. The study used machine learning models to predict large habitat areas across the continental shelf, contributing to a better understanding of the region's seabed diversity.
Researchers at University of South Florida found that sea surface temperatures in four estuaries in South Florida have risen faster than globally and in the Gulf of Mexico. The accelerated warming poses a threat to marine life, including algae, seagrass, and coral reefs.
A new platform, Ocean Species Discoveries, facilitates rapid taxonomic description of marine invertebrate species, reducing decade-long delays. This initiative, coordinated by the Senckenberg Ocean Species Alliance, aims to discover, protect, and raise awareness of threatened marine species before they become extinct.
A new study found that microplastics impact plant reproduction, while seawater flooding causes greater tissue death in coastal plants. Combining both stressors amplifies threats to ecosystem wellbeing.
A study by University of Exeter scientists found that warming conditions can break the symbiotic relationship between single-celled organisms and algae, leading to a loss of productivity in these relationships. This has serious implications for global photosynthesis rates, particularly in coral reefs.
Researchers discovered a new type of parasitic behavior in ancient Antarctic archaea, which can kill their hosts and impact ecosystem balance. The study provides insights into these unique microorganisms' role in supporting Earth's ecosystems and holds promise for biotechnological applications.
Using 3D models, researchers tracked the response of 1,832 coral colonies to two moderate-strength bleaching events off Maui. They found that some corals showed signs of acclimatization, surviving both bleaching events and potentially informing approaches to coral reef conservation.
Climate change is expected to shift the distribution of eight commercially important marine fish and invertebrate species northwards due to warmer water temperatures and loss of sea ice habitat. This could lead to changes in the abundance and economic viability of fisheries, with some species potentially benefiting while others decline.
A new study reveals a previously unknown galeommatoidean bivalve species, Brachiomya ducentiunus, found attached to sea urchins in False Bay's kelp forest. The discovery expands our understanding of marine biodiversity and ecological interactions.
A new study has determined the vertical limits of the marine environment in the Southwest Atlantic, revealing that the mesophotic zone extends to a depth of between 15m and 18m. The research found distinct differences in fish diversity and species composition between the shallow and mesophotic zones.
A study published in Global Change Biology found severe biodiversity decline in the Atacama Trench from 1970 to 1985, coinciding with an El Niño event and extensive fishing efforts. The researchers also discovered a direct impact of sea surface temperature on marine life composition over time.
A global study by Hawaiʻi Institute of Marine Biology demonstrates the benefit of marine protected areas to recreational fisheries, producing more 'trophy-size' fish just outside fully protected areas. The effect is growing stronger over time, with tangible benefits materializing in decades.
Rensselaer researcher Kevin Rose links aquatic deoxygenation with broader Earth system stability. Global warming and pollutants disrupt biogeochemical processes in aquatic ecosystems, affecting freshwater and marine organisms. Critical thresholds of aquatic deoxygenation will impact several Planetary Boundaries.
A new study has found that tracking and disposing of whale remains offshore can have significant ecological benefits, including retaining nutrients within the marine ecosystem. The research used a 14m humpback whale as a test subject and successfully predicted its drift trajectory, allowing for more effective management of whale remains.
Research predicts significant shifts in marine fish communities in the North Atlantic and Arctic Oceans as a result of climate warming. The study projects a decline in the most abundant species and an increase in species richness but with fewer fish overall.
New research reveals oyster sanctuaries contain more abundant populations of oysters and other animal life, despite the presence of parasites. The study found that these areas support higher oyster densities and habitat quality than nearby harvest sites.
A study by Norwegian researchers reveals that around 758 kilotons of plastics enter the Norwegian market every year, while only 2.4% ends up in the environment. The country's high plastic consumption rates pose a significant threat to marine ecosystems, and efforts to reduce plastic waste are crucial.
Researchers discovered adaptations in metabolism and swimming abilities that enable fish to survive extreme temperatures in the Arabian Gulf. The study challenges prevailing views on the 'shrinking of fishes phenomenon' and proposes a new theory on energy balance and survival.
A recent study from Åbo Akademi University reveals significant human-induced pressures on coastal invertebrate communities in the Åland archipelago. The research highlights the impact of wind-waves and fish farming on these communities, shedding light on their responses to environmental drivers and effects on ecosystem functions.
Researchers found a link between ancient ocean oxygen depletion and the massive extinction of marine species during the Jurassic Period. The study provides insights into how human-made carbon emissions may lead to similar extinctions in the future.
A new conceptual model, XRO, significantly improves predictive skill of ENSO events at over one year in advance, offering a transparent view into the mechanisms of equatorial Pacific recharge-discharge physics. This improves conventional climate model forecasting and provides robust quantification of extratropical Pacific, tropical Ind...
The Deepwater Horizon oil spill released nearly 5 million barrels of crude oil and hydrocarbon gases, affecting an area of 1,100 square miles, nearly nine times larger than earlier studies. Biodiversity loss among harpacticoid copepods declined dramatically due to the spill.
Scientists from the University of Copenhagen have found that a chain reaction involving phosphorus recycling played a key role in ancient ocean anoxia. This self-amplifying loop led to rapid and prolonged marine anoxia, which could still pose a threat today due to human activities influencing nutrient dynamics.
Scientists have developed a research framework to incorporate ecological theory into ecosystem management, enabling more effective restoration and counteracting rising carbon dioxide emissions. The approach maps ecological theories to desired restoration outcomes, prioritizing climate-smart restoration and rebuilding ecosystems faster.
A new study found that magnesium levels in sandhoppers increase during cold weather, slowing their activity. In deeper sleep, magnesium levels can more than double, putting the sandhopper into a torpid state and allowing it to conserve energy.
Researchers found that Pacific Coast Feeding Group gray whales, a subset of the Eastern North Pacific population, have been getting smaller since around 2000. This decline could have major consequences for their health and reproductive success, and also raises alarm bells about the state of the food web.
A new study by University of East Anglia and Ocean University of China found that ocean algae play a significant role in producing DMSP, a compound that helps regulate the Earth's climate. The discovery could change our understanding of how these tiny marine organisms impact the planet.
A new study found giant Atlantic bluefin tuna are spending more time in higher latitudes as the region experiences ocean warming events. The fish are normally seasonal visitors to Ireland, but climate change may alter their migration routes.
A team of researchers has developed a novel genetic clock to determine the age of a large marine plant clone for the first time. The oldest identified seagrass clone is 1402 years old and was found in the Baltic Sea, making it older than other long-lived species.
Researchers identified 23 previously undetected metabolites in coral reefs, including amino acids and organosulfonic acids. The study's technique can help monitor coral reef health for climate change and other disturbances.
Scientists from the University of East Anglia and other institutions review the climatic effectiveness of four 'nature-based' techniques using marine biological processes. They conclude that these activities cannot provide a significant contribution to carbon dioxide removal, posing risks to meaningful climate mitigation.
Researchers found that sessile invertebrates like mussels and barnacles became more abundant during the study period, while seaweed species like kelps declined. The rocky shore communities did not return to their baseline conditions after the epidemic ended, suggesting low resilience to changes in temperature and predator numbers.
Researchers evaluate the social narratives, technology, and co-impacts of coral reef preservation, seagrass restoration, and seaweed cultivation in the fight against climate change. These blue carbon solutions have the potential to reduce emissions and advance conservation policy.
Five global projects will advance understanding of ocean systems in a changing climate through improved data and modeling. The Ocean Biogeochemistry Virtual Institute will refine ocean carbon cycling and ecosystem resilience research.
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 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.
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.
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 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 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 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.