Articles tagged with Marine Ecosystems
Noted UNH oceans expert Andrew A. Rosenberg will address the issue of how to protect and manage ocean resources at this year's American Association for the Advancement of Science annual meeting. He emphasizes the need to learn from past mistakes and adopt new approaches such as ecosystem-based management.
Scientists are using integrated ecosystem assessments to prioritize strategies for restoring Puget Sound's ecosystem. Increasing salmon production can have negative impacts on wild Chinook salmon populations, highlighting the need for balanced management approaches.
Heather Leslie explains how resilience science can inform conservation efforts, recognizing connections between human communities and marine ecosystems. Her work shows promise in the Chesapeake Bay restoration project, where oyster sanctuaries and eelgrass seeding increase future resilience.
The Gulf of Maine's ecosystem has undergone significant changes due to fishing and climate change, highlighting the need for a holistic approach to fishery management. A new approach prioritizing ecosystem processes and tradeoffs between human activities is necessary to balance economic needs with environmental protection.
Bottom trawling stirs up sediment plumes that can be seen from space, causing widespread damage to corals, sponges, and other animals. New satellite images reveal the extent of this destruction, highlighting the need for alternative fishing methods.
A global threat map reveals that every square kilometer of the world's oceans is affected by human activities, with rising ocean temperatures being the most pervasive threat. The study found that almost half of all coral reefs have recently experienced medium- to high-level impacts, highlighting the urgent need for conservation efforts.
A new study has mapped the extent of human impact on global oceans, revealing that over 40% of the world's oceans are severely affected. The study highlights the most heavily impacted regions, including coral reefs and seagrass beds, which house a vast majority of marine life.
A new study provides a global-scale map of human impact on marine ecosystems, revealing 40% of the world's oceans are heavily affected. The research highlights the cumulative effect of activities such as fishing, climate change, and pollution, with some areas experiencing dramatic degradation.
NOAA is investigating how underwater sound affects marine mammals, which may cause them to strand. The agency is also studying the rapid rate of Arctic ice melt due to factors like aerosols and ozone in the lower atmosphere. Additionally, NOAA researchers are using radiocarbon traces to determine fish ages, which helps with fisheries m...
Fan Meng, a visionary leader from China, has been awarded the Pew Fellowship in Marine Conservation to expand and improve a marine protected area network in southeast China. The fellowship will help safeguard coastal areas from industrial pollution and unsustainable fishing.
Dr. Sumaila will create comprehensive databases on the cost and ecological impact of commercial fishing globally, providing evidence for smarter policymaking concerning fisheries management worldwide. He aims to gather extensive information on social and economic drivers of overfishing and its impact on marine conservation.
The Pew Fellowship in Marine Conservation supports innovative three-year projects addressing coral reef health, unsustainable commercial fishing, and marine protected areas. The 2008 recipients aim to protect global ocean environments through groundbreaking techniques, fishery management models, and economic analysis.
Dr. Rochet will compare the impact of selective and non-selective fishing on marine ecosystems, aiming to pinpoint the least harmful method to reduce wasteful bycatch and promote ecosystem conservation.
Dr. Constable will create an ecosystem-based management plan to safeguard baleen whales and other marine life in the Southern Ocean's rapidly-growing krill fisheries. His project aims to promote environmentally sustainable growth of the industry and address concerns over climate change and overfishing.
Dennis J. McGillicuddy, Jr., a pioneer in physical-biological interactions, is recognized for his groundbreaking studies of plankton and ocean currents. His research has significantly impacted the global carbon cycle and marine ecosystem productivity.
Researchers from Université de Montréal and Cary Institute found that commercial fishing plays a declining role in removing man-made nitrogen from coastal waters. Nitrogen-rich fertilizer run-off has increased nitrogen levels in coastal ecosystems, causing excessive plant growth, lack of oxygen, and reduced fish populations.
Researchers discovered that coastal bacteria are generalists, capable of performing multiple processes when it comes to carbon cycling. The study used metagenomics to analyze bacterial genomes and showed that these microorganisms can adjust their roles depending on the local food supply.
Three major environmental groups call for a significant increase in protected areas to combat climate change and destructive fishing practices. They also emphasize the importance of human uses being limited within these systems to allow marine species to recover.
Commercial fisheries play a crucial role in removing terrestrial nitrogen from coastal waters, but their contribution has decreased significantly over time. As a result, the global nitrogen balance is becoming increasingly skewed, leading to eutrophication and other environmental problems.
The Center for Ocean Solutions will bring together international experts in marine science and policy to find innovative ways to protect and restore the world's oceans. Recent studies warn that climate change and overfishing will collapse most of the world's commercial fisheries within 50 years.
A new report suggests that preserving deep-sea biodiversity is crucial for the health of oceans. Researchers found that sites with a higher diversity of nematode worms support exponentially higher rates of ecosystem processes and increased efficiency. This study highlights the importance of protecting the world's most critical ecosystem.
A major new study published in Science warns that global warming and acidification are triggering widespread coral disease and stifling coral growth. The researchers argue that drastic action is needed from world leaders to protect coral reefs, which support 100 million people and generate billions of dollars in tourism.
A study reveals that fish farms are causing a severe decline in wild salmon populations by infecting them with sea lice, which can lead to a 99% collapse of the population within four years. This has serious implications for the entire ecosystem, as salmon play a crucial role in supporting various industries and wildlife.
Coral reefs, crucial for millions of livelihoods worldwide, are at risk due to rapid climate change and ocean acidification. The International Coral Reef Targeted Research Program warns that most coral reefs will not survive the forecasted increases in global temperatures and CO2 emissions unless drastic action is taken.
A global ocean observing system is crucial to measure the health of our oceans and respond to climate change. The Partnership for Observation of the Global Oceans urges completion of a comprehensive system within 10 years.
Researchers at Kiel University and IFM-GEOMAR will investigate the effects of climate change on tropical oceans' oxygen levels, impacting marine ecosystems and carbon balance. The new SFB aims to better understand mechanisms and define a quantitative basis for these interactions.
A recent study by Arizona State University professor James Elser found that ecosystems are not as different as they seem when it comes to nutrient limitation. The study analyzed over 300 publications and found that nitrogen and phosphorus are equally important in freshwater systems, contradicting conventional wisdom.
A study by University of Chicago's Susan Kidwell reveals an inverse relationship between the extent of human impact and how well collections of dead shells reflect the current inhabitants of an ecosystem. This new tool can provide a deeper historical perspective on ecosystems, helping scientists understand the effects of human actions.
The US has forgiven $26 million in Costa Rican debt to protect the country's tropical forests, with Conservation International and The Nature Conservancy providing additional funding. This is the largest debt-for-nature swap under the Tropical Forest Conservation Act, aiming to slow global warming by protecting carbon-storing ecosystems.
Scientists at the Smithsonian Tropical Research Institute have discovered an established population of invasive Harris mud crabs in the Panama Canal's Miraflores Third Lock Lake. The crustaceans, native to North America, are known to cause environmental and economic harm, fouling pipes and preying on fish in gill nets.
The Woods Hole Oceanographic Institution (WHOI) has been awarded a $97.7 million contract to support the development and installation of coastal and global components of the National Science Foundation's Ocean Observatories Initiative (OOI). The partnership includes Scripps Institution of Oceanography and Oregon State University, aimin...
A call has been made for a Southern Hemisphere network of deep ocean moorings to monitor changes in the Southern Ocean circulation, which could influence global climate. The North Atlantic moored network provides measurements of the Gulf Stream, a significant feature in moderating European and North American climate.
Australian jellyfish, Phyllorhiza punctata, have reappeared in the Gulf of Mexico, with sightings reported as far north as North Carolina. The species can outcompete commercially important fish for food and consume their larvae.
Researchers have studied the secret lives of southern elephant seals, revealing their detailed feeding behavior in relation to oceanographic features. The measurements show that seal populations in different regions have distinct foraging strategies, which may explain the decline of Indian and Pacific seal numbers since the 1950s.
The report outlines practical approaches toward ecosystem-based fishery management, citing the success of Alaska and North Pacific fisheries. The Marine Conservation Alliance recommends 13 best practices to ensure sustainable fishing practices while preserving ecosystem health.
NASA is supporting cutting-edge research at the Earth's polar regions with $18 million in funding for 33 scientific investigations. These studies focus on ice flow, air pollution, sea ice impact on ocean ecosystems, and glacier thickness measurement.
Researchers at Bigelow Laboratory have developed a new approach to studying marine microbes, allowing for the analysis of individual unicellular organisms. The method, which uses fluorescence-activated sorting and multi-locus DNA sequencing, enables the study of metabolic capabilities and identities of uncultured microbial taxa.
Researchers use archaeology, biochemistry, and ecology to study the behavior and ecology of northern fur seals over 1,500 years. They find evidence of reproductive behavior in prehistoric populations that differs from modern populations.
Researchers reconstructed the species' prehistoric geographical range using techniques from archaeology, biochemistry, and ecology. Prehistoric northern fur seals were year-round residents in California, nursing their young for much longer than modern fur seals.
A new study finds that high ocean temperatures and low coral cover increase the risk of white syndrome, a deadly disease threatening the world's richest ecosystems. The research suggests that corals in high-density areas will be increasingly vulnerable to disease if global warming continues.
Scientists have discovered that earthquake-induced gravity field changes can slowly recover to initial conditions, possibly due to simultaneous diffusion of mantle water. This self-healing system could significantly reduce permanent shifts in the Earth's rotation axis by earthquakes. Meanwhile, recent trends in Arctic Ocean mass distri...
Researchers used king penguins as bio-indicators to study the impact of climate change on fish availability and foraging behavior. By analyzing heart rate and energy expenditure data, scientists found correlations between energetic costs and food scarcity, providing insights into the pressure exerted by king penguins on their ecosystem.
A recent analysis reveals that inland water bodies are significant areas of terrestrial carbon transformation, deserving inclusion in global carbon cycle assessments. The findings show that rivers transport complex transformations of carbon, with half entering the atmosphere and 12% stored in sediments.
A new ocean model at MIT captures the diversity of underwater forests, simulating the growth and population patterns of microscopic plants that produce half the oxygen we breathe. The model's approach reflects natural selection, allowing for a more accurate representation of real-world ecosystems.
A study found that overfishing large sharks leads to an explosion of their ray and skate prey species, which in turn devastates scallop populations. The decline of great sharks has triggered cascading effects throughout coastal food webs, impacting local communities that depend on healthy fisheries.
A new report highlights Alaska's successful ocean conservation efforts and calls for continued vigilance to address climate change impacts on marine ecosystems. The 'Alaska Model' has been cited as a leading example of science-based management, with catch limits set below recommended harvest levels.
A new study reveals that a sudden ocean climate change in the late 1970s may be responsible for Alaska's decline in Steller sea lion population. Climate change affected water temperatures and ocean currents determining the abundance of available fish for the sea lions to eat, leading to a decline.
A massive cold-water eddy has been discovered off the coast of Sydney, altering the East Australian Current's flow. The eddy's impact on the Tasman Sea ecosystem is still unknown.
A worldwide general warning is warranted due to the significant health risks posed by mercury-contaminated fish, particularly for children and women of childbearing age. The Madison Declaration on Mercury Pollution highlights the need for effective national and international policies to combat this global problem.
Climate change is altering North Atlantic ecosystems by freshening seawater and curbing deepening of surface mixed layers. This shift affects phytoplankton and zooplankton populations, leading to changes in seasonal cycles.
Researchers propose a holistic approach to fisheries management, emphasizing the need to consider entire ecosystems and monitor catch characteristics. The 'Ten Commandments' outline specific action items to improve sustainability and efficiency in marine management.
Deep-sea fishing has been linked to habitat destruction and population declines of long-lived fish species. Eliminating government fuel subsidies could render fleets economically unviable and relieve pressure on vulnerable ecosystems.
A delayed arrival of cold, nutrient-rich water due to altered ocean currents led to reduced barnacle and mussel larvae settlement on rocky shores. The change resulted in lower phytoplankton abundance and a recovery of mussel recruitment when stronger nutrient-rich currents arrived later.
A recent study by Ohio State University scientists reveals that Antarctic warming is reducing animals at the base of the ecosystem, causing some penguin populations to shift southward. The loss of sea ice and decrease in krill abundance will have significant impacts on marine ecosystems.
Climate scientists reviewed observations of carbon dioxide, temperature, and sea level from 1990-2006 and found that actual changes closely followed projected scenarios. Sea levels have risen faster than previously estimated, with some uncertainties remaining about the contribution of ice-sheet melts.
Research reveals that warmer waters cause a deficiency in oxygen uptake and distribution, limiting fish populations. This study investigates the effect of water temperature on eelpout (Zoarces viviparus) physiology, showing a direct link between oxygen limitation and population density changes.
Researchers warn of imminent ecological extinction for reef sharks, with populations declining at alarming rates. Immediate reductions in fishing pressure are needed to give threatened species a chance of recovery.
A group of researchers has successfully identified algae of the genus known to represent coral symbionts and demonstrated that isolated algae can establish symbioses with new corals. This finding potentially bolsters future efforts to protect and rehabilitate coral reefs.
A 250M year-old mass extinction event led to a profound ecological shift in the world's oceans. Simple marine ecosystems were largely displaced by complex ones, reflecting a rise in mobile organisms with higher metabolism. This change has continued ever since, with current human activities potentially reversing this trend.
A team of scientists has observed bizarre deep-sea communities living around methane seeps off New Zealand's east coast, including tube worms, shell beds, and coral. The expedition discovered four types of chemosynthetic habitats in close proximity, providing valuable insights into the distribution patterns of biological life.