Articles tagged with Ocean Ph
A new study published in Environmental Research Letters analyzes the benefits and drawbacks of dissolving particles in ocean surfaces to increase marine uptake of carbon dioxide. The researchers find that this approach would only compensate for around 9% of present-day anthropogenic CO2 emissions, highlighting its inefficiency.
Researchers predict that global warming will acidify saltwater sufficiently to make low-frequency sound travel twice as far as it currently does. This could lead to a clearer understanding of the sound environment of marine mammals and the effects of human activity on their habitats.
Carbon dioxide released into oceans due to water pollution and air increases may be harming commercial fish populations. A new model predicts that nutrient runoff from fertilizer, human waste, and other pollutants could worsen ocean acidification, impacting species like clams, oysters, scallops, and mussels.
Researchers found that anemone fish babies can adjust to ocean acidification if their parents are also raised in acidic water. This discovery suggests some species may be more resilient than previously thought, which could help mitigate the impact of CO2 emission reduction.
Researchers created a mini-lab in Australia's Great Barrier Reef to simulate predicted future ocean conditions and test the reaction of corals. The study, published in Scientific Reports, provides new insights into how reefs respond to ocean acidification and can inform conservation efforts.
Scientists have found evidence that ocean acidification is happening faster today than in the last 300 million years, with potential consequences for coral reefs and other marine life. The oceans are acting like a sponge to draw down excess carbon dioxide, but at an alarming rate, putting these ecosystems at risk.
A new study finds that the world's oceans may be turning acidic faster today from human carbon emissions than during four major extinctions in the last 300 million years. This could lead to the loss of organisms such as coral reefs, oysters, and salmon. The ocean acidification rate is at least 10 times faster than 56 million years ago.
An international team of scientists found that human-induced CO2 emissions have increased ocean acidity far beyond natural variations, potentially reducing calcification rates of corals and other aragonite shell-forming organisms. The study projects severe reductions in coral reef diversity, structural complexity, and resilience by the...
A new study by University of Georgia researchers found that fertilizer runoff and excess carbon dioxide in coastal waters increase acidity, compromising shell-forming abilities of oysters and other marine creatures. The findings highlight the need to manage fertilizer use and limit fossil fuel consumption to mitigate future damage.
The Baltic Sea is a significant source of carbon dioxide in the atmosphere, according to a recent study by the University of Gothenburg. The sea's ability to absorb carbon dioxide without increasing acidity has decreased in some regions, while increased in others due to local variations.
A recent study by Dr. Paul Jokiel suggests that ocean acidification interferes with the transfer of hydrogen ions between water and coral tissue, disrupting calcification rates and weakening coral skeletons. This 'proton flux hypothesis' provides new insights into the importance of ocean acidification and temperature on coral reefs.
A new study has found that soft corals, once believed to be minor contributors to coral reef structure, are actually a crucial component of the ecosystem. Soft coral skeletal elements called sclerites were discovered to make up massive parts of reefs in the South China Sea.
Increasing ocean acidity poses significant threats to northern abalone populations, with exposure to higher CO2 levels killing 40% of larvae and reducing their size. This could limit population growth and have cascading effects on coastal ecosystems.
A study by UC Merced marine biologist Michael Beman reveals that rising greenhouse gases are making ocean water more acidic, fundamentally altering the way nitrogen cycles throughout the sea. This change could have significant impacts on all forms of marine life.
A comprehensive ocean observation system is needed to track changes in acidification, water temperature, sea level, and polar ice cover. The system would provide critical information for human needs, including climate regulation and oxygen production.
Researchers used computer simulations to predict the impact of mitigation policies on ocean acidification. A peak year of emissions and post-peak reduction rates significantly influence ocean acidity increases by 2100. The study suggests that substantial emission reductions need to occur as soon as possible.
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.
The Geological Society of America recognizes Kateryna Klochko, who developed a new method to accurately reconstruct ancient ocean pH levels. The organization also honors Marilyn Suiter, a pioneer in promoting diversity and inclusion in geoscience education.
Human carbon dioxide emissions impact ocean acoustics by increasing transparency to low-frequency sound, potentially affecting marine mammals' communication. The pH of surface seawater will drop by 0.6 units by 2100, leading to a 70% decrease in sound absorption.
At Station ALOHA, ocean acidification rates have been documented over two decades, with surface acidity growing more acidic at the expected rate from chemical equilibration. However, year-to-year changes vary on seasonal and inter-annual timescales, driven by climate-induced changes in ocean mixing.
A recent study published in Science reveals that fish produce a significant fraction of the oceans' calcium carbonate, affecting seawater's pH balance. The researchers estimate three to 15 percent of marine calcium carbonate is produced by fish, which can dissolve rapidly and release into the deep ocean.
A recent study published in Science reveals that three to 15 per cent of the oceans' calcium carbonate comes from fish intestines. This discovery could help solve a mystery of rapid ocean acidification due to global CO2 emissions.
A study published in Science estimates the total biomass of fish in the world's oceans at 2 billion tonnes. Fish play a significant role in mitigating climate change by maintaining the ocean's pH balance, with their calcium excretion process affecting ocean acidification.
A new study reveals ocean acidification is occurring at a rate 10 times faster than previously predicted, posing severe threats to marine food webs and species diversity. The increasing acidity of the ocean harms certain sea animals and could reduce its ability to absorb carbon dioxide.
The world's oceans are becoming more acidic due to increased carbon dioxide levels, causing sounds to travel farther underwater. This change could improve communication for marine mammals but increase background noise, affecting their behavior.
A new study predicts that acidic ocean conditions could significantly harm the earliest stages of marine life, including a 25% decline in sea urchin fertilization success by 2100. The researchers warn that this could have far-reaching consequences for ecosystem viability and key species like lobsters and corals.
A study by Swedish researchers found that acidification reduces sea urchin fertility by 25%, affecting larval development and population growth. The findings highlight the devastating impact of ocean acidification on marine animal life, with far-reaching consequences for commercially and ecologically important species.
The oceans have absorbed 40% of human-caused carbon dioxide, causing a 0.1-unit drop in surface pH; acidification may harm corals and plankton by mid-century if emissions aren't reduced. Carbon dioxide levels could reach 0.35 units by the mid-21st century if cuts aren't made immediately.
Researchers have discovered high levels of acidified ocean water off the West Coast of North America, with corrosive levels detected within 20 miles of the shoreline. The acidic water is likely 50 years old and may increase in future due to rising atmospheric CO2 levels.
Rising greenhouse gas emissions are causing ocean warming, acidification, and altering circulation patterns, posing significant threats to coral reefs and other marine ecosystems. The panelists emphasize the need for drastic action to reduce emissions to mitigate these impacts.
Scientists warn that small sea creatures like pteropods, which are eaten by many species, may go extinct due to ocean acidification and warming. This could have catastrophic effects on the food chain, as these organisms play a vital role in marine ecosystems.
Scientists studying the Paleocene-Eocene Thermal Maximum (PETM) find analogies for global changes from continued carbon dioxide emissions. The ocean can absorb massive amounts of carbon, but acidification threatens corals and marine organisms building calcium carbonate shells.
Researchers developed a method to accelerate removal of carbon dioxide from the atmosphere and store it in oceans for centuries, mimicking nature's natural weathering process. This new technology may counteract acidification of oceans threatening coral reefs and provide a feasible solution for reducing global warming.
The world's oceans are becoming more acidic, potentially devastating for corals and marine organisms. Corals with chalky skeletons face declining calcification, affecting the marine food web and global oxygen production.
A team of scientists warns that CO2 emissions could alter ocean chemistry, violating EPA water quality criteria by mid-century. The study predicts that atmospheric CO2 concentrations will exceed 500 ppm by century's end, posing significant risks to marine biota and food webs.
Ocean acidity is rising due to increasing carbon dioxide levels, posing a threat to marine life such as corals and shellfish. The study suggests that future changes in ocean acidification are largely independent of climate change.
Ocean acidification could lead to extinction of many marine species due to increased acidity and dissolution of calcium carbonate shells. The last time oceans endured such a drastic change in chemistry was 65 million years ago, at the same time dinosaurs went extinct.
Rising atmospheric carbon dioxide is causing coral reefs to become more acidic, threatening their survival. Laboratory experiments suggest a doubling in CO2 could drive production of carbonate below what's needed to repair skeletal damage.
Researchers conclude that large pools of carbon on land may shrink in the coming century, affecting carbon removal. Planting trees remains an effective way to sequester carbon, but growth rates are unlikely to be supercharged.
Phosphorus is essential for life as a building block of nucleic acids and energy transfer molecules. New technologies help scientists study phosphorus cycling in soil, sea, and living organisms to better understand its role in the Earth system.
Marine scientists at UNC-CH and Duke University have launched a ferry-based water quality monitoring system in the Neuse River, generating valuable data for analysis. The system, called FerryMon, aims to evaluate and model how Pamlico Sound's ecosystem responds to human and natural impacts.
Researchers found that carbon dioxide from human activities primarily ends up in the subtropical ocean, rather than the cold Southern Ocean. This new understanding challenges previous models and highlights the complexity of global ocean carbon sequestration.
A University of Southern California study found that DDT and PCBs are widely distributed in the Palos Verdes Shelf water column, leaching from sediments. The substances' concentrations decreased exponentially with distance from the ocean floor, indicating they're being transported by ocean currents.
Researchers found that zebra mussel larvae die in Lake George water within a week due to low calcium levels. However, adult mussels thrive in the same conditions. The discovery provides hope for protecting the lake's ecosystem from invasive species like zebra mussels.
A scientific team's findings suggest that tsunamis may pose a significant threat to the Pacific Rim and other coastline regions due to the instability of submarine structures. The team believes that earthquakes of magnitude 7.0 or greater can trigger massive underwater landslides, resulting in devastating tsunamis.
A Duke University geological study proposes that earthquakes triggered the massive and puzzling swarms of icebergs believed to have separated from the Canadian ice sheet. The researchers hypothesize that periodic crustal failure along the eastern Canadian coast, caused by the growing weight of the ice sheet, led to the quakes, which th...
A team of researchers at the University of Washington has discovered that dissolved organic matter in oceans can form polymer gels, which provide an unexpected mechanism for removing carbon dioxide from the atmosphere. This process could potentially play a significant role in mitigating the greenhouse effect.