Articles tagged with Marine Ecosystems
Research reveals that bleaching reefs release organic compounds that promote bacterial growth, leading to an increase in opportunistic bacteria and potential pathogens. This shift in microbial communities may harm corals through suffocation or disease.
Researchers found that fishers' operational decisions and social structures play a crucial role in adapting to climate change. Cooperatives can be resilient to short-term shocks, but small-scale cooperatives may become more vulnerable as climate change progresses.
Researchers have discovered an estimated 348,000 square kilometers of shallow coral reefs worldwide, revising previous estimates. The high-resolution satellite maps also identify areas with hard and soft bottoms, providing valuable data for scientists and policymakers to better understand and manage reef systems.
A University of Stirling study found that genetic mixing changes local mussel populations, helping farmers with site selection and management. The research also identified key areas for growing mussel populations along Scotland's Atlantic coast.
A new study published in Proceedings of the Royal Society B found that the end-Triassic extinction had a greater impact on terrestrial ecosystems than marine ecosystems. Terrestrial ecosystems took longer to recover from mass extinction events, with higher extinction severity and fewer groups occupying key ecological roles.
Scientists have found evidence of Dansgaard-Oeschger events during the penultimate glacial period, revealing a different frequency and interval between temperature peaks. The findings suggest that not all glacial periods are the same and provide insights into ocean circulation patterns and climate change mechanisms.
A new satellite mapping technique can aid in coral reef protection and restoration efforts by identifying areas of high habitat diversity, which are also home to high species diversity. The study found that these maps can be used as a proxy for biodiversity, guiding ecosystem protection and restoration.
A recent Monterey Bay Aquarium study found that denser and more sheltered kelp forests can withstand severe stressors from warming ocean temperatures. The research also showed that persistent kelp forests are better equipped to handle multiple stressors, including sea urchin outbreaks and marine heatwaves.
A study from Chalmers University of Technology found that the production and use of ammonia as a marine fuel can lead to eutrophication, acidification, and emissions of potent greenhouse gases. Researchers warn that the pursuit of low-carbon fuels may create new environmental challenges.
Tidal landscapes like mangroves and salt marshes are a greater carbon sink than previously thought, with stored carbon in biomass and muddy soils contributing to climate change mitigation. The new findings also show that bicarbonate exports from these ecosystems double the size of the carbon trap, making them even more effective.
Researchers have identified nanoplastics in ocean water off the coasts of China, South Korea, and the US, with surprising diversity in shape and chemical composition. The tiny plastic particles, originating from consumer products, were found to be more toxic than larger plastic particles due to their small size.
The reintroduction of sea otters to their former habitat in Central California's Elkhorn Slough has slowed erosion of creekbanks and marsh edges by up to 90%. The study, published in Nature, highlights the benefits of conservation efforts and suggests a promising tool for stabilizing ecosystems worldwide.
New research reveals how human activities affect the marine phosphorus cycle in coastal seas, leading to changes in coastal biodiversity and ecosystem services. The study identifies an 'Anthropogenic Nitrogen Pump' that reduces phosphate levels, limiting algae growth, and enhances the utilization of dissolved organic phosphorus.
A new study by Woods Hole Oceanographic Institution scientists found that bioplastic straws made from cellulose diacetate (CDA) degrade up to 50% in 16 weeks, projecting an environmental lifetime of 10-20 months. This rate is faster than paper straws and could be a promising alternative to conventional plastic straws.
Researchers found that coastal trapped waves and tidal mixing control primary production in the tropical Angolan upwelling system. Productivity peaks occur seasonally, with strong fluctuations during austral winter.
Researchers have uncovered evidence of complex microbial communities existing in ecosystems over 3 billion years ago, with a diverse carbon cycle involving various microorganisms. The study provides a rare glimpse into the Earth's early ecosystems and advances our understanding of ancient microbial ecosystems.
Researchers at Oregon State University discovered that marine heat waves trigger earlier reproduction and high mortality in early life stages of Pacific cod. The study found these changes persisted in subsequent years, potentially impacting the future of Gulf of Alaska's Pacific cod population.
A new study published in Palaeontologia Electronica shows the Megalodon was more slender than earlier studies suggested, changing our understanding of its behavior and impact on ancient ocean life. The revised model suggests a longer digestive canal, potentially leading to less predation pressure on other marine creatures.
A new study by the University of Miami Rosenstiel School and NOAA finds that South Florida's inshore reefs are less vulnerable to ocean acidification than previously thought. The research highlights the importance of preserving seagrass meadows to mitigate climate-related threats to coral reefs.
A new study by Monterey Bay Aquarium researchers found that sea otter population growth during the last century enhanced kelp forest resilience in California, increasing coverage by 56% along the central coast. However, kelp forests declined dramatically in northern and southern regions due to climate change.
A new study reveals a surprising trend in global fishing industries: the decline of catch per fisher since the 1990s, despite increasing numbers of fishermen. This decrease has significant implications for food production efficiency, marine ecosystems, and fishing communities.
A new study suggests that a cross-sectoral approach to marine protection can meet conservation targets at lower costs for all stakeholders involved. The approach minimizes the opportunity cost to each stakeholder simultaneously, resulting in more affordable protection of high seas biodiversity.
A new database of marine microbes has been created, revealing insights into the ocean's diversity and its impact on climate change. The catalog provides unprecedented information on which microbes live where and what they do.
New study reveals that kelp forests off the Pacific Coast were thriving 32 million years ago, with fossilized holdfasts showing evidence of ancient marine mammals and invertebrates. The discovery sheds light on the evolution of kelp ecosystems and highlights the importance of fossil hunting by amateur collectors.
Researchers tracked 87 Adélie penguins using electronic tags, revealing how they interact with sea ice during their long-distance migrations. The study highlights the interconnectedness of species in the Southern Ocean and how climate change may impact Adélie penguin populations.
Researchers at Okayama University uncovered key reproductive characteristics of the red-swamp crayfish, highlighting the importance of hook length and chelae for identifying sexual status. The study also found high reproductive ability and fast growth rates compared to native Japanese crayfish.
A new study demonstrates that identifying and protecting marine ecosystems, known as coral nurseries, is crucial to future coral conservation and restoration efforts. These areas, where coral larvae can survive and thrive, are connected to established coral reefs via nearshore currents and reef structure.
The METEOR Expedition M197 is a research project studying the Eastern Mediterranean Sea's future changes in response to climate change and human activities. The project investigates nutrient supply, marine ecosystems, and carbon export from surface to deep waters.
A recent study suggests that the Arctic cold snap significantly contributes to the heightened uptake of carbon dioxide by the East Sea. The research found that the internal circulation along the East Coast strengthened due to the Arctic cold wave, leading to a surge in carbon dioxide absorption. This phenomenon presents a promising sol...
The 15th annual horizon scan highlights 15 key conservation issues, including declining invertebrate populations and altering marine ecosystems. The study emphasizes the need for continued innovation in sustainable energy technologies to address climate change.
The EU's Nature Restoration Law (NRL) sets ambitious targets to restore 20% of Europe's land and marine areas by 2030, with the goal of increasing pollinator populations and rewetting peatlands. National implementation will be crucial for its success, requiring cooperation with economic sectors such as agriculture.
Foraminifera, single-cell organisms with shells, affect oxygen distribution and bacterial diversity in sea sediments through their burrowing. They increase oxygen penetration by 15-20%, decreasing organic matter and bacterial abundance.
A new study reveals that zooplankton species in the Humboldt Current off Peru can attenuate the export of carbon to the deep sea by consuming sinking particles. This challenge the previously prevailing assumption of a uniformly efficient biological carbon pump in oxygen minimum zones.
The Atlantic Ocean near Bermuda has warmed by 1°C over the past 40 years, with surface temperatures increasing by 0.24°C per decade since the 1980s. The ocean's salinity and oxygen levels have also decreased, leading to increased acidity, which can affect marine life.
A recent study by University of Queensland scientist Professor Ove Hoegh-Guldberg warns that record-breaking marine heatwaves will cause catastrophic mass coral bleaching worldwide. The research suggests that current marine heatwaves will likely lead to a global mass coral bleaching event over the next 12-24 months.
A new study found that the presence of seabirds on islands adjacent to tropical coral reefs can boost coral growth rates by more than double. Coral reefs near seabird colonies can bounce back much quicker from bleaching events, with recoveries happening around 10 months faster.
Researchers from Incheon National University found that climate change impacts prokaryotes in oceans, altering methane and nitrous oxide cycles. This study highlights the need for policies to reduce ocean acidification and warming to stabilize vital microbial communities and greenhouse gas cycles.
A study led by Arizona State University found that herbivore fishing to less than 80% of their unfished density compromises reef resilience due to algae overgrowth. The research, published before regulatory decisions in Hawai'i, highlights the critical role of herbivores in maintaining coral reef health.
A recent study has found that the ocean's capacity to store atmospheric carbon dioxide is significantly higher than previously estimated. The research team analyzed data from around the world and calculated a new estimate of 15 gigatonnes per year, an increase of around 20% compared to previous studies.
New data analysis reveals that regional temperature patterns are crucial for evaluating climate models, with warmer temperatures in the North Atlantic and a cooler North Atlantic found to be more accurate. This approach provides better insights into the spatial impact of climate change and its effects on ecosystems and human societies.
Researchers have found that Vibrio bacteria play a role in outbreaks of mortality among dark stinging sponges weakened by warming Mediterranean. The study suggests climate change may be impacting disease dynamics in sponges and their pathogens.
Researchers found that specific algae from the genus Breviolum help Caribbean octocorals withstand heat waves and bleaching events. The study provides clues for the future of coral reefs and highlights the need for further research to better understand the ecosystem.
A new study by the University of Zurich found that global shark and ray protection is inadequate, with crucial species playing vital ecological roles in maintaining biodiversity. The research identified 18 unique functional diversity hotspots concentrated along continental shelves and oceanic islands.
Scientists found that oceanic deoxygenation played a significant role in the Triassic–Jurassic mass extinction, leading to widespread ecosystem disruption and species extinctions. The global extent of deoxygenation was surprisingly similar to today's levels.
A team of NTU scientists found a mix of harmful microorganisms, including Labyrinthulaceae and Lyngbya, that can poison marine life. However, they also discovered potential plastic-eating bacteria, such as Muricauda and Halomonas, which could aid in plastic degradation.
A new study reveals that shipwrecks are providing a sanctuary for fish, corals, and other marine species in areas open to destructive bottom towed fishing. Marine life density is significantly higher within wreck sites than in control areas.
A new study estimates that climate change and coastal land usage will result in significant shrinkage of coral habitats, tidal marshes, and mangroves. In contrast, macroalgal beds are expected to remain stable, while seagrass meadows may expand due to increased sunlight penetration.
Researchers urge concerted action to mitigate global warming's impact on polar ecosystems, which are both the most-threatened and least-understood areas. The study aims to map all biodiversity in these regions to sustainably manage unique habitats and their ecosystem services.
Researchers found a tradeoff between fast growth and heat tolerance in corals, with thermally sensitive algae dominating faster growth but only in cooler water. This study helps predict reef futures and inform conservation strategies, highlighting the complexity of coral growth on a reef.
Researchers aim to identify contaminants in ash, soil, and surface waters from the Maui fire, posing risks to human health. The study will also help educate communities on the presence and risk of contaminants, informing prevention measures for future fires.
The University of Miami Rosenstiel School will conduct multi-stressor experiments on 16 key reef species to assess the impacts of ocean warming, acidification, and hypoxia on South Florida's coastal and marine ecosystems. The project aims to characterize the effects of climate change stressors under present and future scenarios.
A study by Universitat Autonoma de Barcelona found that all aquatic species in river mouths are contaminated with microplastics. Molluscs were the most affected, and nanoplastics posed a greater risk to aquatic organisms due to their ability to pass through cellular membranes.
A new approach to understanding climate change effects on marine ecosystems considers both smooth trends and variable changes, highlighting areas vulnerable to extreme events. Researchers propose a 'more realistic' conceptual model to better predict future consequences.
A new study by the University of Washington challenges previous findings of declining phytoplankton in the North Atlantic. The researchers analyzed an ice core from central Greenland and found that human-generated pollutants changed the atmosphere's chemistry, offsetting a decrease in marine productivity.
A team of international scientists cautions that reliance on mechanical cleanup devices to address plastic pollution is ineffective and may even harm marine life. They argue that reducing plastic production and consumption is the most cost-effective way to prevent further pollution.
Researchers from Utrecht University and Natural History Museum Maastricht studied wear marks on mosasaur teeth to understand dietary diversity. The analysis found differences in diet between smaller and larger species, including a preference for shellfish among one species and fish with strongly scaled bodies among another.
Research shows some barnacles morphing to protect themselves from predators, while others remain unchanged in cooler regions. The study found bent morphs prevalent in warmer waters, but absent in colder areas.
Scientists have developed an AI system that accurately maps the surface area and outline of giant icebergs in one-hundredth of a second. This technology surpasses manual interpretation methods, which can take several minutes to delineate an iceberg's outline, and offers insights into their impact on the polar environment.
A new study reveals that polar bear populations have been declining over the past 20,000 years due to rising sea temperatures, with a 20-40% reduction in population size. The researchers found that even small changes in sea temperature have a significant impact on polar bears.
Researchers developed a waterproof device that captures and enriches dissolved compounds in seawater, revealing diverse elemental compositions and unknown molecular structures, with potential applications for drug discovery and ecosystem health monitoring.