Articles tagged with Marine Ecosystems
Researchers discovered how coral-dwelling microalgae harness nutrients from seawater and transport them to corals through a complex process. The findings provide new insights into the impact of coral bleaching on reef ecosystems, highlighting the importance of this symbiotic relationship.
Researchers tracked jellyfish movements with GPS loggers and observed their swimming direction to show they can actively swim counter-current in response to drift. The findings could help predict and avoid troublesome jellyfish blooms, improving management of these ocean ecosystems.
A study published in Geology highlights the dangers of coral reefs facing erosion due to ocean acidification and nutrient pollution. The researchers found that bioeroders can thrive in waters with high nutrient levels and low pH conditions, tipping the balance towards erosion.
A network of nine reference sites off Australia's coast provides multi-decadal data on the country's coastal waters. The network, known as IMOS National Reference Stations, allows scientists to track changes in oceanography and ecosystems.
Researchers from the University of Manchester believe rising sea levels, not direct competition with jaws, led to the extinction of jawless fish. The study found that these ancient fish were reliant on shallow water environments and ecosystems, which declined as sea levels rose.
Research reveals four billion microscopic plastic fibres littering each square kilometre of deep sea sediment worldwide. Microplastics have sunk to the ocean floor, with levels up to four times greater in deep seas than in shallow and coastal waters.
A new study predicts eastern Pacific marine species will shift poleward due to climate change, altering fish communities and fishing grounds. The study suggests some species will move into habitats of other marine life to the north, while others may disappear from areas at their southern ends.
Research on ozone depletion reveals devastating effects on Southern Hemisphere weather, including increased incidence of floods, droughts, wildfires, and changes to tree growth rates and biodiversity in Antarctic lakes. Ozone hole impacts are also felt through changes in summer rainfall and wind patterns, posing risks to natural ecosys...
A study by Okinawa Institute of Science and Technology Graduate University researcher Yuichi Nakajima identified genetic data that suggest the diversity and differentiation of deep-sea barnacle populations in two troughs near Okinawa and the Mariana Islands. The findings have implications for understanding climate change impacts on oce...
Three studies published in Philosophical Transactions of the Royal Society Biological Science hold promise for resource managers to predict and avoid ecosystem collapse. Successful management depends on consistent monitoring, incorporation of tipping points data into actions, and local-scale management.
Researchers find that climate change may affect the ratio of oxygen consumed to phosphorus released during organic matter respiration in the subsurface ocean. This shift could lead to more carbon being stored in the ocean, potentially offsetting the slowdown of the ocean's uptake of carbon dioxide from the atmosphere.
A study by Oregon State University and Simon Fraser University found that small fish with long bodies are most likely to be attacked by lionfish, which can increase their chances of being eaten by up to 200 times. The research also identified common traits among prey species that make them vulnerable to predation.
A new tool provides real-time ocean chemistry data along the West Coast, helping scientists understand changes in water chemistry and aid the shellfish industry. The IOOS Pacific Region Oean Acidification Data Portal offers valuable insights for adapting to ocean acidification.
Researchers developed new way to measure how CO2 acidifies oceans, affecting marine ecosystems. A 5,000 km long survey revealed calcification rates of coral reefs and open sea plankton in the Red Sea, providing crucial baseline conditions for tracking environmental changes.
A new integrated coastal zone management plan has been developed for Belize using novel tools to calculate risk of habitat degradation. The plan reduces high-risk areas by 20% and triples space for coastal development, while allowing for sustainable aquaculture and oil exploration limits.
A genomic analysis of a newly discovered virus prevalent in symptomatic sea stars has linked Sea Star Associated Densovirus to the devastating wasting disease, potentially triggering an unprecedented ecological upheaval. The research lays the groundwork for understanding how the virus kills sea stars and what triggers outbreaks.
A NOAA-led research team discovered a new species of deep-sea coral and a catshark nursery area in the underwater canyons off the Sonoma coast. The team used innovative technologies to explore and film marine life in areas reaching 1,000 feet deep.
Allocating $45-76 billion to protected areas annually could help manage them effectively, ensuring their contribution to the planet's well-being is met. Many threatened species and plants rely on well-managed protected areas for survival.
Researchers have discovered that cold-water corals can fuse the skeletons of genetically distinct individuals, creating stable reefs in the dark depths of the ocean. This adaptation allows them to conserve energy and strengthen their habitats, potentially aiding their survival under future climate changes.
A recent University of Delaware study has found that Adélie penguin chick weights are most closely linked to local weather conditions, including high winds and precipitation. The researchers discovered a significant impact on chick weight variations over time, with even small changes in weather causing notable differences in chick mass.
Researchers at VIMS will develop tools to identify vulnerable headwater wetlands and provide climate-adaptation strategies for conservation. The project uses historical tidal-marsh observations to build a comprehensive picture of resilience.
A new study shows that jellyfish falls are rapidly consumed by deep-sea scavengers, revealing the importance of gelatinous material to food webs. The research challenges previous negative assessments and suggests that jellyfish blooms may provide essential nutrients to deep-sea ecosystems.
A study on epaulette sharks reveals they are tolerant to elevated CO2 levels, which could help them survive ocean acidification. The findings suggest these sharks make physiological adjustments to cope with the changes, maintaining oxygen transport and energy without apparent harm.
The Mediterranean is invaded by over 1,000 alien species, including fish and algae, threatening native biodiversity. Invasive species disrupt delicate balances in ecosystems, causing devastating effects on animal species.
Research reveals that diverse guard-crab species and size classes offer different kinds of effective protection against coral predators. The study found that even small crabs defend against snails, while larger crabs ignore them.
A recent study found that ocean acidification caused a significant decrease in calcification rates of the Great Barrier Reef, threatening its ecosystem. The research suggests that coral reefs are now producing less dense and fragile skeletons, making them more susceptible to erosion.
Phytoplankton are crucial for fish populations and Earth's carbon cycle, with a perpetual dance between predators and prey affecting their growth cycles. Tiny imbalances in this relationship cause massive phytoplankton blooms, impacting ocean productivity, fisheries, and carbon cycling.
A long-term laboratory experiment showed that young sea stars grow more slowly and eat less in acidic conditions, even after a prolonged acclimation period. The study suggests that young sea stars may not adapt to the effects of ocean acidification, potentially affecting entire ecosystems.
A recent study published in Applied Geography highlights the significant impact of oil discharges from human maritime activity on the Canadian coast. The research, led by University of Calgary geographer Stefania Bertazzon, shows that recreational activities such as boating and fishing are major contributors to ocean pollution.
Research finds increasing variability in coastal upwelling currents linked to short-term declines in fish growth and seabird reproduction. Tree ring data reveals 4 out of 10 most extreme poor upwelling years occurred since 1950, highlighting the importance of upwelling for ecosystem conservation.
Two tropical rabbitfish species are destroying algal forests in eastern Mediterranean, reducing large seaweeds and algae by 65% and 60%. Climate change is enabling their expansion, posing a threat to entire Mediterranean basin.
A new study reveals that marine viruses are more important to microbial ecology below sunlit surface waters than previously suspected. The research focused on a sulfur-oxidizing bacterium called SUP05, which is dominant in oxygen minimum zones and has not been successfully cultivated in a lab setting.
Researchers will deploy hundreds of robotic floats to study the Southern Ocean's carbon and heat uptake, as well as its importance in ocean ecosystems. The project aims to improve climate models and provide insights into the region's global significance.
The National Science Foundation has awarded new grants totaling $11.4 million to research the impact of ocean acidification on marine environments and organisms. Ocean acidification affects marine ecosystems, organisms' life histories, ocean food webs, and biogeochemical cycling.
The $21-million SOCCOM program will provide unprecedented year-round coverage of biogeochemistry in the Southern Ocean, enabling top scientists to work together on research that was not possible before. The initiative aims to improve our understanding of the Southern Ocean's importance to the Earth's carbon and climate systems.
A growing 'dead zone' in the Arabian Sea allows green Noctiluca scintillans to dominate the base of the food chain, potentially devastating fish populations that support 120 million people. The shift is linked to massive sewage flows and nutrient-rich waters.
The $21 million SOCCOM program will create a biogeochemical and physical portrait of the Southern Ocean using hundreds of robotic floats deployed around Antarctica. The project aims to improve our understanding of the ocean's carbon, nutrient, and oxygen content, and its importance to Earth's climate systems.
Researchers have adapted a biomedical technique to study ocean organisms, identifying and measuring proteins to understand biochemical reactions. The study reveals how microbes respond to environmental cues and ecosystem changes over large regions.
Researchers discovered that E. huxleyi can grow without thiamine and prefers precursor chemical HMP instead, re-evaluating the importance of vitamin B1 in regulating algal communities. This finding has implications for understanding climate change's impact on marine ecosystems and predicting global carbon cycles.
Derelict fishing traps are a significant problem in US waters, catching fish and other species beyond their target. Researchers recommend a collaborative approach to manage and prevent gear loss, involving the fishing industry and examining regional challenges.
Researchers from Louisiana State University have confirmed the existence of microbial life in a subglacial lake beneath the West Antarctic ice sheet. The discovery sheds new light on the potential for life in other extreme environments and has implications for our understanding of the planet's biosphere.
Researchers funded by NSF publish paper confirming presence of viable microbial ecosystems in subglacial Lake Whillans, 800 meters beneath the West Antarctic ice sheet. The discovery has implications for life in other extreme environments and may influence the chemical and biological composition of the Southern Ocean.
Princeton researchers find that bursting bubbles inject tiny oil droplets into water when covered with a layer of oil. The discovery provides new insight into the mixture of non-soluble liquids and has potential applications in industries such as drug manufacturing and oil spill cleanups.
The symposium highlights climate's effects on predators, leading to trophic cascades that alter ecosystem structure and function. Sea otters' keystone predator role maintains healthy kelp forests, supporting diverse marine species.
The report presents regional findings from ten regions, highlighting major impacts of climate change on ecosystems, including shifts in biodiversity and location of species. The assessment provides guidelines for how to respond and adapt to climate change, emphasizing the importance of protecting biodiversity and natural resources.
A recent study published in Conservation Biology found that the bumphead parrotfish, a major coral predator, has both positive and negative effects on reefs. The fish helps reduce algae abundance and disperse small coral fragments, but also consumes coral and reduces its diversity.
A new discovery expands the impact footprint of the 2010 Deepwater Horizon oil spill, with multiple coral communities impacted up to 22 km from the spill site and at depths over 1800 meters. The study used a 'fingerprint' model to identify damage in newly discovered coral communities.
A collaborative research team published findings in Ecological Indicators on a new marine ecosystem support tool to improve decision-making by natural resource managers. The MARES project integrates ecosystem science and societal benefits into a management framework, providing exportable technology for other coastal ecosystems.
A new species of pontarachnid mite was discovered in a Caribbean mesophotic coral ecosystem, collected from nearly 70m depth. The study highlights the potential biodiversity hotspot for marine arthropods in these ecosystems.
The NOAA and its partners predict a significant cyanobacteria bloom in western Lake Erie, expected to be smaller than the 2013 bloom. The forecast uses satellite data, analysis of nutrient flow, and independent models to classify blooms by concentration and spread across the lake's western basin.
New research reveals whales have a powerful impact on oceans, global carbon storage, and commercial fisheries. The recovery of great whale populations may buffer marine ecosystems from climate change threats by recycling nutrients and enhancing productivity.
The Mediterranean Sea's iconic ecosystems, such as sea grass meadows and coral reefs, are facing rapid decline due to acidification and warming. Research suggests that human society worldwide must reduce fossil fuel emissions to save these ecosystems from extinction.
Researchers from the University of Bristol and China studied trackways formed on an ancient seabed to determine how nothosaurs, marine reptiles that lived during the age of dinosaurs, propelled themselves through water. The evidence suggests that these creatures moved over the seafloor by rowing their forelimbs in unison.
A historic epidemic of sea star wasting syndrome has exploded along Oregon's coast, with 30-50% of ochre sea stars affected and potentially leading to local extinctions. The outbreak could disrupt the marine intertidal ecosystem, causing widespread damage.
A new study has overturned the long-used 'Neutral Theory of Biodiversity' by revealing its flaw: it fails to capture the crucial role of abundant species. The research, covering a vast array of marine ecosystems worldwide, found that these dominant species deliver essential ecosystem services.
A study reveals that bottom trawling causes intensive biological desertification of sedimentary seabed ecosystems, leading to a 50% decrease in meiofauna abundance and 25% decline in nematode species. The practice also depletes organic matter and carbon content, threatening ecosystem functioning.
A Scripps Institution of Oceanography study finds that Alteromonas bacteria can consume as much dissolved organic carbon as diverse communities of organisms. This discovery sheds light on the complex mechanisms of ocean carbon cycling and highlights the importance of individual species in regulating atmospheric carbon dioxide.
Researchers found hundreds of distinct genetic subpopulations within a single species of ocean microbe, Prochlorococcus, and discovered that these subpopulations are finely tuned for specific ecological niches. The study suggests that the remarkable diversity of Prochlorococcus is not random but rather a result of natural selection.
The Mozambique Channel is identified as a priority for protection due to its high coral richness and sensitive species. The study found that northern reef systems in the channel are better protected from climate change and human pressures.
Researchers at the University of Missouri have developed new statistical models to increase the accuracy of ocean forecasting. The models improved predictability of sea surface temperature extremes, wind fields, and plankton distribution, ultimately benefiting fisheries and ecosystems.