Researchers have discovered small animals in the Mediterranean Sea that live their entire lives without oxygen and reproduce despite a complete absence of oxygen. These multicellular organisms possess organelles resembling hydrogenosomes found in anaerobic environments, challenging our current understanding of life on Earth.
Small algae consume more bacteria than specialized predators, gaining a competitive survival edge in the open ocean. This finding supports the idea that bacteria are a crucial nutrient source for these microorganisms.
A British scientific expedition is heading to the Cayman Trough, a rift in the seafloor of the Caribbean that reaches over three miles deep. The team will use robot submarines and remotely-controlled vehicles to study deep-sea vents, which support lush colonies of deep-sea creatures.
Oxygen minimum zones (OMZs) support a variety of habitats and species, including brittle stars, spider crabs, and tube-living organisms. Global warming may exacerbate oxygen depletion and reduce biodiversity in these regions.
Scientists are conducting an expedition to study the rupture site of the 8.8-magnitude Chilean earthquake, mapping changes in the seafloor and searching for evidence of tsunami formation. The research will provide valuable insights into similar earthquake regions worldwide and inform tsunami warning systems.
Researchers found that sharks in deep waters of El Cachucho feed on small crustaceans and fish, adapting to changing ocean depths. Understanding their diet helps predict changes in trophic networks and monitor species populations.
Research found that spore-like acantharian cysts rapidly sink from surface waters to the deep ocean, delivering significant amounts of organic matter to the ocean depths. This phenomenon may be part of an extraordinary reproductive strategy allowing juveniles to exploit a seasonal food bonanza.
A team of researchers, including UC San Diego's Richard Norris, presents new evidence linking an asteroid impact to the mass extinction that wiped out dinosaurs and other organisms 65.5 million years ago. The study highlights a unique layer of debris in deep-sea sediments that correlates with abrupt environmental changes.
Thomas M. Schmidt, a renowned microbiologist, has been honored with the American Society for Microbiology (ASM) Graduate Microbiology Teaching Award. He is recognized for fostering an intellectually stimulating environment and inspiring rigorous thinkers through his clear explanations.
A research team has revised estimates of glacier melt in Alaska, finding that glaciers contribute about one-third less to sea-level rise than previously estimated. The new calculations put the rate of melting at around .0047 inches per year, down from the original estimate of .0067 inches.
Researchers propose limiting longline fishing in summer months and areas over 35 nautical miles from land to drastically reduce accidental loggerhead turtle captures. Using fish as bait may also help, but could affect swordfish catches.
Large amplitude internal waves can reach heights of 150 meters in the South China Sea, affecting surface wave fields and observable from space. The Earth's rotation modifies these waves as they travel across the deep ocean basin, influencing their steepening process.
A new special issue of Oceanography presents groundbreaking research on seamounts, highlighting the importance of these underwater mountains for marine life and global ocean health. The study reveals devastating impacts from overfishing and habitat destruction, emphasizing the need for sustainable management practices.
Damage to Gulf of California habitats can be reversed through conservation efforts, as protected areas have shown increased biomass and flourishing fish populations. Key protection strategies include reducing or eliminating fishing activity in critical spawning aggregation areas and sensitive nursery habitats.
The new journal, published online-only, focuses on interdisciplinary limnology and oceanography research exploring the link between fluid dynamics and aquatic system processes. ASLO members receive free access, with select articles available open-access.
A new study suggests that pumping nutrient-rich water to boost algal growth and draw carbon dioxide from the atmosphere may not be an effective solution to combat global warming. The simulation results show modest climatic benefits, with potential risks of exacerbating global warming if the scheme fails.
A Scripps-led study found that extremely long waves originating along Pacific coasts may destabilize Antarctic ice shelves. The researchers propose that infragravity waves could initiate ice shelf collapse by opening crevasses and reducing ice integrity.
Researchers found tiny single-celled creatures called foraminifera living in the Challenger Deep build their homes using material that sinks down from near the ocean surface. The discovery challenges previous assumptions about the environment and composition of agglutinated foraminifera tests.
A University of Rhode Island researcher is proposing a global monitoring network to track banned chemicals in oceans. The initiative uses inexpensive polyethylene passive samplers, which can be easily deployed by non-scientists worldwide.
Researchers reconstruct past ocean chemistry using calcium carbonate veins that precipitate from seawater-derived fluids in rocks beneath the seafloor. The composition of past seawater can be determined from suites of calcium carbonate veins that formed millions of years ago, providing valuable insights into climate and ocean evolution.
Researchers found that the current interglacial period has lasted 2.0-2.5 millennia longer than predicted by dominant theory, raising questions about natural climate trends and human impact. The study suggests that orbital changes may still influence climate for another two thousand years or so.
Increasing ocean acidity poses a significant threat to marine species, with potentially profound ramifications for food chains. A UAB expert warns that the effects of climate change on the world's oceans are undeniable and urgent.
Researchers developed a novel method to correct data for humidity's cross-sensitivity in open-path sensors, aligning with previous studies' results. This robust method enables widespread use of open-path sensors for air-sea carbon dioxide flux estimation.
New evidence suggests that post-depositional 'burn-down' events in the Kimmeridge Clay Formation caused loss of organic matter, resulting in alternating patterns between organic-rich and -poor sediments. This supports the 'burn-down' theory over the long-held hypothesis of elevated planktonic productivity.
A Scripps/LLNL team has won a grant to improve greenhouse gas emissions verification using continuous atmospheric measurements. The method will focus on industrially produced gases with limited sources, aiming to create reliable computer representations of emissions activity.
Researchers estimate that echinoderms, including starfish and sea urchins, produce over a tenth of a gigatonne of carbon per year through calcifying their skeletons. This contribution is more significant than previously thought and must be taken into account in climate models.
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.
Researchers used high-resolution seismic data to analyze fault evolution across the Gulf of Corinth rift, revealing patterns of basin subsidence and fault activity. The study provides new insights into early rift history and the development of faults associated with the rift, shedding light on seafloor spreading mechanisms.
Tom Bowman has developed a series of graphics that translate key figures from the IPCC report for public audiences, making scientific information accessible. The new format aims to help institutions, corporations, educators, and consumers understand climate change risks and opportunities.
The study reconstructs environmental conditions on the Voring Plateau, indicating shallow marine environments in early Eocene and full submersion by late Eocene. This suggests earlier marine connections between Nordic sea basins, which may have contributed to declining global temperatures and ice sheet development.
High-resolution computer simulations reveal that North Atlantic water enters the Arctic Ocean through three main routes: Fram Strait, Barents Sea northern branch, and southern branch. This study provides a comprehensive understanding of ocean climate change mechanisms.
Scientists at UC San Diego discovered a downward curve in the pitch of blue whale songs across the globe. The decline may be due to an increase in population size, allowing males to sing lower frequency songs that don't need to travel as far.
A new study by an international team has used seafloor seismometers to image the Hawaiian mantle, revealing a high-temperature plume from the lower mantle. The findings suggest that the Hawaiian hot spot is the result of this upwelling plume, which tilts southeastward as it extends downward.
Researchers have mapped the deep origins of the Hawaiian Hotspot using a large network of sea-floor seismometers. The study provides strong support for the existence of a mantle plume beneath Hawaii, with implications for the Earth's composition and evolution over time.
Four new species of deep-sea king crabs were formally described, expanding the total number of known species to 113. The new discoveries reveal that king crabs are found in most world oceans at depths between 500 and 1500 meters.
Researchers found Kuwait Bay's sea surface temperature rose at an average rate of 0.62°C per decade, three times the global average. This increase is attributed to 50% due to local drivers such as wind and river flow, while 13% is caused by human activity.
Oceanic core complexes are large elevated massifs formed along slow-spreading mid-ocean ridges. Research by Dr. Bram Murton and colleagues found that these complexes form during periods of reduced magma supply from volcanism, leading to suppressed or absent volcanism.
UC San Diego engineers develop algorithms for swarms of ocean robots to track ocean currents, predict oil spill movement, and improve models. The system will enable local agencies to deploy robots quickly to monitor spills and aid in the development of marine protected areas.
Researchers at Scripps Institution of Oceanography are developing autonomous underwater explorers, or AUEs, to trace small-scale ocean processes vital to tiny marine inhabitants. The miniature robots will provide new information about marine protected areas, harmful algal blooms, and oil spills.
Osedax marine worms feast on submerged bones using symbiotic bacteria, with unique sexual and digestive habits and diverse habitats across the world's oceans. Recent research discovered up to twelve further distinct evolutionary lineages exist beyond the five species already described.
A 14,000-year reconstruction of the past climate at Maxwell Bay in Antarctica reveals unprecedented regional synchronous warming and ice loss. The study suggests that current warming is linked to atmospheric trends associated with global climate change.
Researchers have mapped the large-scale distributions of dissolved organic nitrogen and phosphorus over the Atlantic Ocean, finding that these nutrients dominate surface waters and play a crucial role in export production. The study suggests that nutrient-poor regions, like subtropical gyres, rely on these nutrients to sustain life.
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.
New data from a 10,000-kilometer cruise reveals that iron availability significantly controls the input of fixed nitrogen into the Atlantic Ocean. This finding is crucial for understanding global climate patterns and their potential implications on carbon dioxide sequestration.
The Casablanca Seamount dive revealed a geologically interesting terrain with vertical descents and massive lava flows. The area hosted various marine life, including sponges, corals, lobsters, and fish species.
The launch of SMOS will improve understanding of water transportation around the Earth, leading to more accurate weather forecasts and climate simulations. Global measurements of salinity and soil moisture will also inform predictions of floods, droughts, and future climate changes.
Researchers at Stony Brook University found that high levels of carbon dioxide in seawater hinder the growth and survival of bivalve larvae, leading to a significant decline in shellfish populations. The study suggests ocean acidification poses an equally serious risk to ocean resources.
Researchers have developed a technique to distinguish between farmed and wild salmon by analyzing the chemistry of their scales, which grows like tree rings and preserves a record of the water they lived in. The new method achieved 98% accuracy and has the potential to identify farms responsible for releasing wild fish into rivers.
A joint US-Norwegian study, known as MENU, compared marine ecosystems in the North Atlantic and North Pacific to identify factors supporting fisheries production. The researchers found underlying patterns that were not apparent in single-ecosystem studies.
A recent study suggests that global warming conditions will increase the incidence of central Pacific El Niño, potentially reducing its protective effects on Atlantic hurricanes. This could lead to more severe droughts in regions like Australia and India.
A study published in the Bulletin of the American Meteorological Society suggests that the 1918 El Niño may have contributed to the severity of the flu pandemic. The research indicates that the El Niño was one of the strongest of the 20th century, and its impact on global weather patterns could have exacerbated the spread of the disease.
A University of Washington Seaglider achieved a record-breaking 9-month, 5-day mission in the Pacific Ocean, covering over 3,050 miles under its own power. The vehicle, propelled by its shape and dive maneuvers, surpassed previous endurance records for autonomous underwater vehicles.
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.
The University of California, San Diego will receive $32 million to develop the Ocean Observatories Initiative's cyberinfrastructure. The system will enable near-real-time access to ocean data, transforming ocean science research and education.
Oceanographers at University of Hawaii at Manoa found that deeper pelagic fish have higher mercury concentrations due to their unique diets. The study, published in the Proceedings of the National Academy of Sciences, highlights the importance of understanding the open ocean ecosystem to sustainably manage fish populations.
Marine biomedicine researchers have deciphered the structure of a naturally produced ocean-based compound hoiamide A, which offers a novel template for drug development. The findings suggest that hoiamide A may interact with neurons in different ways, potentially leading to therapeutic effects for diseases such as epilepsy and neurodeg...
A 2006 heat wave in California killed over 600 people and 25,000 cattle, with temperatures rising to the hottest one percent of historical records. The event was exacerbated by high humidity, which caused heat waves to last longer and fed on themselves until winds changed.
Researchers discovered seven new species of swimming worms in the deep sea, including 'green bombers' that release bioluminescent displays for defense. The discovery sheds light on evolutionary adaptations and challenges faced by these unique organisms.
A study found that Arctic ocean warming triggers methane release from seabed sediments, contributing to climate change. The National Oceanography Centre and researchers detected over 250 plumes of bubbles rising from the West Spitsbergen continental margin.