Articles tagged with Marine Ecosystems
Scientists have mapped the unexplored offshore Northern San Andreas Fault, revealing deep rifts and high walls with areas supporting animal life. The study aims to understand past earthquakes and their impact on biological diversity.
Research reveals that seamounts have comparable levels of diversity and endemism to continental margins, but their ecological communities are distinct in structure and higher in biomass. Seamount ecosystems are highly vulnerable to disturbance by bottom trawling and require decades for recovery.
A new study estimated human activities' impact on the North East Atlantic deep seafloor, finding bottom trawling has a greater physical footprint than other major activities. The research highlights the need for better data collection and management to protect seafloor ecosystems.
Leading international scientists propose a new approach to marine tenure to reverse the 'tragedy of the commons' and restore fish stocks. A successful experiment in Chile shows that co-operative models for fishery management can improve sustainability.
NSU researchers are conducting four projects studying the oil spill's effects on marine life and ecosystems. They aim to better understand potential and actual impacts to economically and biologically valuable marine ecosystems.
Researchers have created the world's first frozen repository for Hawaiian coral, banking cells to preserve species diversity and potentially restore populations. The frozen material can be thawed decades or even centuries later to revive coral reefs threatened by climate change, pollution, and human impact.
Research suggests that high CO2 levels can lead to reduced growth, shell hardness, and increased mortality in juvenile oysters. The study's findings highlight the vulnerability of oysters to ocean acidification, which may have cascading effects on marine ecosystems.
Scientists are studying the effects of the Gulf oil spill on the Florida Everglades ecosystem, measuring hydrocarbon concentrations and food web structure at impacted sites. Research will help design future oil spill clean-up efforts and assess the impact on marine animal and plant distributions.
A new study reveals a global decline of marine phytoplankton over the past century, with declines of about 1% per year. The decline is strongly correlated with rising sea surface temperatures and changing ocean conditions.
NOAA has selected Scripps Institution of Oceanography, UC San Diego, to lead a new research partnership, CIMEC, to study climate change and coastal ecosystems. The institute will focus on ecosystem-based management of fisheries and continue the longstanding work of JIMO in climate and ocean sciences.
A new study suggests that the extinction of woolly mammoths and other large mammals may have been triggered by the addition of a predator: humans. The researchers argue that human hunters provided new competition for major predators, leading to a trophic cascade that ultimately caused the decline of herbivores and carnivores alike.
Researchers propose that human hunters triggered the loss of large mammals, including woolly mammoths and saber-toothed cats, by providing new competition with major predators. The study suggests that humans were not the primary cause of extinction but rather the initial trigger for a trophic cascade.
Researchers discover rapid expansion of salmon farms in Chile's protected National Park, posing a significant threat to native sea lions and the entire ecosystem. The farms' waste, medication, and noise pollution are causing devastating impacts on the region's biodiversity.
Underwater gliders are being tested for tracking tagged fish in Alaska, providing a new method for scientists. The technology allows researchers to follow the movements of tagged fish over long distances and gather oceanographic information simultaneously.
A comprehensive synthesis on climate change's effects on global ocean functions has revealed dramatic changes at an unprecedented rate. The report highlights the urgent need for world leaders to limit greenhouse gas growth and reduce the risk of ecological disasters.
The Joint Institute for the Study of the Atmosphere and Ocean at the University of Washington will focus on 10 critical areas, including climate change, ocean acidification, and marine ecosystems. The institute aims to expand its research efforts with a potential $100 million award over five years.
Researchers studying two isolated Pacific atolls find diverse marine life populations in response to different fishing pressures. At Palmyra, a protected US wildlife refuge, high densities of sharks and large fish are found, while Tabuaeran, inhabited by 2,500 people, hosts lower fish populations due to artisanal fishing.
Scientists from over 60 countries present research on the impact of human activities on land-based plants and animals in Antarctica. The study found that changes in ocean currents are linked to wind patterns around Antarctica, affecting the ecosystem.
A new study from the University of Gothenburg reveals that climate change could lead to a decrease in river runoff and an increase in salinity in the Baltic Sea. This change could have significant consequences for the region's sensitive ecosystem, which relies on a delicate balance between salt and fresh water.
Scientists propose a new approach to selective fishing that prioritizes ecosystem health and biodiversity, challenging traditional methods. The 'balanced exploitation' approach combines reduced fishing effort with better use of non-target species to achieve sustainable yields while maintaining healthy ecosystems.
The project will investigate the lower reach of the river and its offshore plume, measuring elements such as carbon, nutrients, and microorganisms. The goal is to develop a carbon cycle model that links the upriver microbial system with the offshore plume.
Scientists have discovered a massive Southern Ocean current with a volume equivalent to 40 Amazon Rivers near the Kerguelen Plateau. The current carries dense, oxygen-rich water that sinks near Antarctica to the deep ocean basins further north.
Researchers at Kiel University discovered fossil whale bones with 0.5mm circular boreholes matching those of living Osedax worms, dating to 30 million years ago. The findings confirm that boneworms are at least 30 million years old and were feeding on whale bones during this period.
Scientists warn of ocean acidification, a threat to marine ecosystems and biodiversity. The 'evil twin' of global warming is causing the oceans to become increasingly acidic, potentially leading to mass extinctions.
Marine Roseobacter clade decline linked to ocean acidification may impact global climate system and socio-economic consequences. Ocean acidification could significantly affect fish stocks and coral reef erosion.
The Pew Environment Group announced five individuals receiving the 2010 Pew Fellowship in Marine Conservation to address pressing challenges in ocean conservation. The Fellows will focus on projects such as reducing seabird bycatch, protecting coral reefs, and enhancing shellfish management.
A study on fossil corals found that reef ecosystems persisted through massive environmental changes, including sharply falling sea levels. The research suggests that coral reefs can survive adverse conditions given suitable shallow rocky habitat, and complex ecosystems were maintained during less optimal periods.
The study aims to understand how changing climate affects phytoplankton growth and organic carbon distributions. Researchers will collect data on sea surface temperatures, salinities and chlorophyll levels to refine biogeochemistry models.
A special issue of PNAS explores the latest science on marine reserves, revealing that well-designed reserves can benefit both fish and fishermen. Studies show that reserves can play a major role in reducing cumulative impacts on marine ecosystems in areas like the South China Sea and Coral Triangle.
The old balkanized approach to ocean management has failed to protect ocean ecosystems; marine spatial planning provides a comprehensive map of human uses and natural resources. Effective ocean management requires considering all ecosystem elements, and the AAAS symposium will showcase innovative techniques for mapping spatial impacts.
The Atlas of Coastal Ecosystems in the Western Gulf of California tracks limestone deposits and their impact on the carbon cycle. The book features high-quality satellite images and field photos, providing valuable insights for earth and marine scientists studying coastal areas.
Researchers discovered diverse corals harboring unusual, thermally tolerant algae species in the Andaman Sea. These findings suggest some coral reefs may persist despite future global warming.
A recent study published in Molecular Ecology suggests that Antarctic minke whale populations have not increased due to commercial whaling. The research estimates the long-term population size of Antarctic minke whales to be around 670,000 individuals, similar to current estimates from sighting surveys.
The Woods Hole Oceanographic Institution will receive a $8.1 million grant to construct the Laboratory for Ocean Sensors and Observing Systems, enabling fabrication and maintenance of new ocean observing systems. The facility will support various ongoing projects, including the Ocean Observatories Initiative.
A recent scientific conference highlighted the effects of unseasonal summer storms on UK marine life, including a surge in deadly jellyfish and rare seabird sightings. The event brought together representatives from various sectors to discuss conservation measures and environmental change.
The MARES project aims to develop comprehensive ecosystem models and reach consensus on feasible management goals for the South Florida coastal ecosystem. Human dimensions science will be incorporated to study societal processes and their impact on ecosystem sustainability.
The discovery of massive methane pits in the Hudson Canyon has significant implications for the region's marine ecosystem. The pits, found by Rutgers University and NOAA researchers using a robotic underwater vehicle, are believed to be related to the dissolution of gas hydrates and could support a diverse range of fish species.
The report highlights concerns such as ocean warming, acidification, changes in current strengths, productivity, and species distribution. It offers adaptation responses to inform policymakers, scientists, and the community.
A team of researchers from nine institutions, including LSU, will drill through the West Antarctic Ice Sheet to directly access a subglacial lake and study its physical, chemical, and geobiological interactions. The project aims to investigate novel microbial species and ecosystems in this extreme environment.
A marine sponge species recycles carbon from dissolved organic material, sustaining the diverse ecosystems of coral reefs. This process involves rapid cell turnover and shedding, allowing other reef residents to consume the recycled cells, thereby supporting the reef's complex food web.
The study found that terrestrial ecosystems and oceans have a much greater capacity to absorb CO2 than previously thought, with the airborne fraction of CO2 remaining stable at 0.7% per decade since 1850. This challenges recent research suggesting a decrease in absorption capacity as CO2 emissions rise.
China has seen improvements in forest growth and marine ecosystem health, but severe pollution and biodiversity loss still threaten the country's environment. Despite major government efforts, China faces significant challenges in protecting its rich biodiversity.
Researchers warn that climate variability can affect deep-sea ecosystems, potentially disrupting food chains and carbon cycles. Long-term monitoring is crucial to understand the impact of global warming on these vulnerable ecosystems.
Climate change impacts deep-sea ecosystems by altering food supply and community dynamics. Changes in ocean processes, such as wind-driven upwelling and nutrient delivery, can lead to dramatic year-to-year variations in organic material reaching the seafloor, affecting fish populations like grenadiers.
A team of UBC researchers has mapped the genome of a microbe that thrives in dead zones, offering new insight into its metabolic capabilities and potential impact on climate change. The discovery provides an experimental framework for studying dead zone ecology and may help monitor and mitigate their expansion.
Researchers studied Vibrio coralliilyticus's metabolic activity using NMR, finding temperature-dependent changes that contribute to coral bleaching. The team aims to better understand the symbiotic relationships between coral and its zooxanthellae algae.
The world is expected to miss its target to stem biodiversity loss by 2010, with freshwater ecosystems collapsing due to massive mismanagement and growing human needs for water. This has led to an immense crisis in freshwater biodiversity, with species extinction rates four to six times higher than their terrestrial and marine cousins.
A UBC-led study finds that climate change will lead to major shifts in ocean fisheries productivity, affecting global food supply. Tropical regions are expected to see significant declines in catch potential, with Indonesia, US, Chile, and China among the hardest hit.
A new study finds that the decline of apex predators has led to a significant increase in mesopredator populations, resulting in ecosystem collapse and economic losses. The study highlights the complex interactions between humans and wildlife, emphasizing the need for careful consideration of solutions to manage these issues.
Researchers at the University of Gothenburg have discovered nine new bristleworm species that feed on dead whales, highlighting a previously unknown food source in marine ecosystems. The study reveals these specialized organisms play a significant role in nutrient cycling and ecosystem balance.
A Princeton-led team of scientists has found that denitrification is the dominant process in returning nitrogen to the air in low-oxygen ocean environments. The team's research confirms the importance of conventional denitrification and suggests that the current mainstream view on the nitrogen cycle may be based on a false impression.
Researchers found that similar symptoms occur in many systems as they approach a critical state of transition, indicating 'tipping points' for abrupt changes. These early-warning signals are observed in ecosystems, financial markets, and human physiology, highlighting the potential for catastrophic bifurcations.
Scientists from Stanford University and their international colleagues use cutting-edge technology to monitor the Gulf of Aqaba's surface currents, shedding light on its complex dynamics. The research helps environmental agencies respond to spills and minimize pollution, while also informing large-scale water projects.
A 14-year study found that young lemon sharks born at the Bimini islands in the Bahamas tend to stay near their coastal birthplace for many years. This knowledge could be crucial for conservation efforts, as it suggests that local management measures can protect these intermediate-aged sharks from overfishing and habitat destruction.
Researchers from seven nations installed a new deep-sea observatory in the Norwegian Arctic to study mud volcano eruptions and their effects on the environment. The observatory will provide insights into the dynamics of gas eruptions and their consequences for biological communities on the seafloor.
The NOAA Integrated Ocean Observing System has awarded grants to support ocean observing activities from Long Island Sound to the Canadian Maritimes. The funds also support projects to improve ocean and coastal data, fisheries management, and ecosystem conservation.
The Flower Garden Banks National Marine Sanctuary has been found to have one of the healthiest coral reef ecosystems in the tropical Caribbean and Gulf of Mexico. The sanctuary is dominated by top-level predators such as large grouper, jacks, and snappers that are rare in other areas.
The NOAA Integrated Ocean Observing System has awarded grants to the Monterey Bay Aquarium Research Institute to conduct long-term monitoring of environmental conditions in Central and Northern California. This funding will support protecting marine life and habitat, as well as provide easier access to regional real-time data.
A two-year study by an international team of scientists found that steps taken to curb overfishing are beginning to succeed in five of the 10 large marine ecosystems examined. This has led to improved fish abundance and reduced exploitation rates, providing new hope for rebuilding troubled fisheries.
A new analysis suggests that global fisheries are showing positive signs of recovery, with five out of ten large marine ecosystems studying well. However, 68% of worldwide fisheries still require rebuilding and more stringent regulations are needed to reverse the collapse of vulnerable species.