Articles tagged with Marine Ecosystems
A new study by Simon Fraser University warns that fish sounds and noise pollution are left out of critical conservation policies. This omission can have significant impacts on fish reproduction, population sizes, and ultimately, species survival.
Researchers will study how ocean currents and nutrients from land influence the health and productivity of MCEs, which support diverse marine life and important fisheries. The project aims to fill critical knowledge gaps and provide science-based solutions for environmental protection and sustainable growth in the gulf region.
A study suggests that eliminating invasive rats can restore the flow of nutrients across food chain networks in Seychelles, potentially enhancing ecosystem function on coral reefs. Seabird populations play a mediating role in this process by increasing turf algae growth and stimulating top-down controls.
Researchers at Chalmers University of Technology discovered that ship traffic triggers large methane emissions in shallow areas, including ports. The study found that cruise and container ships caused the most frequent and largest measured methane releases.
Researchers have confirmed the presence of Barbonymus schwanefeldii (tinfoil barb) in Laguna de Bay, Philippines' largest freshwater lake. The invasive species can outcompete native fish for food and breeding grounds, posing long-term ecological consequences.
A USC-developed shipboard system using limestone and seawater can remove up to half of carbon dioxide emitted from shipping vessels, cutting maritime CO2 emissions by 50%. The process mimics a natural chemical reaction in the ocean, where CO2 is absorbed into water pumped onboard and then neutralized through a bed of limestone.
Researchers developed a model to detect early signs of marsh decline using satellite observations, identifying vulnerable areas along Georgia's coast. The study found belowground biomass has declined across 72% of Georgia's coastal marsh since 2014.
Killer whales have been observed detaching kelp stalks and using them to massage each other's backs, a behavior dubbed "allokelping". This social bonding behavior may promote skin health and strengthen relationships among the whales.
A new study reveals that wildfires have a profound impact on water systems, affecting microbial communities and nutrient cycling. The researchers found that moderate heat processing from fires leads to more bioavailable carbon for microbes, but also disrupts the nitrogen cycle and natural balance of aquatic ecosystems.
Research shows that island rivers shape reef passes, allowing seawater and nutrients to flow in and out. The locations of reef passes align with where rivers funnel out from an island's coast, providing circulation throughout the reef.
Marine microalgae Heterosigma akashiwo forms aggregates of buoyant microplastics through extracellular polymeric substances, increasing their density and causing them to sink. The sinking velocity of these aggregates is significant for understanding the behavior of microplastics in marine ecosystems.
A recent study across 3,058 populations reveals that 24% of Wadden Sea species are declining significantly, while only 14% are increasing. The declines affect native species and those at the base of the food web, highlighting a potential warning signal of local extinction.
A recent study documents the discovery of over 100 new ribbon worm species off Oman's coast, highlighting a significant underestimation of global marine biodiversity. The finding underscores the importance of exploring lesser-studied regions, such as the tropics, to uncover the full extent of oceanic diversity.
Coral reefs are found to be more productive ecosystems than previously thought, with 80% occurring in nutrient-rich conditions. The study challenges the 'Darwin's Paradox' narrative and highlights the importance of understanding linkages between reef animals and their surroundings.
A study by University of California - Davis and Woods Hole Oceanographic Institute found that cleaner fish stations influence damselfish and reef microbial diversity. The presence of cleaning gobies was linked to increased fish visits and changes in water nutrients and microbial communities.
A new study reveals that industrial iron from coal and steel industries is altering the North Pacific ecosystem, leading to changes in phytoplankton growth and nutrient cycles. The research found that increased iron supply boosts spring phytoplankton blooms but also depletes other nutrients, resulting in a crash later in the season.
A team of researchers analyzed a photosynthetic complex found in a marine alga and discovered a unique arrangement of antenna proteins around the photosystem core. This structure indicates an adaptation to its living environment and provides insights into the efficiency of light-harvesting under certain conditions.
New research finds megalodon preyed upon a variety of species, including fish, sharks, and even crustaceans, contrary to the long-held belief that it targeted large marine mammals. The discovery was made by analyzing zinc isotopes in fossilized teeth, providing insights into the prehistoric shark's ecological versatility.
The University of Oldenburg has secured funding for three research clusters: Hearing4all, Ocean Floor, and NaviSense. These clusters aim to improve hearing loss prediction, diagnosis, and treatment, as well as animal navigation research. The funding enables the continuation of high-quality research with social relevance.
Researchers found that gradual warming causes significant changes in the plankton community, while heatwaves amplify these effects. The study used historical data and an experiment to simulate future warmer scenarios with and without heatwaves.
Researchers at GEOMAR identify that EU fisheries management's reliance on national interests and ICES advice leads to overfishing, resulting in the collapse of many fish stocks. A new approach is proposed to set quotas independently of national interests and prioritize sustainable catches.
The University of Maryland-led study found that the bay experiences 25 days of heat waves annually, with a 10% uptick in recent years. Satellite data shows varying duration and frequency of heat waves across different regions of the bay, highlighting the need for a marine heat wave warning system.
Clownfish have been shown to shrink in response to heat stress and social conflict, increasing their survival chances by up to 78%. The study also reveals that coordination with breeding partners is crucial for surviving heatwaves when shrinking.
Researchers linked comprehensive datasets with physical ocean processes to understand the exceptional marine biodiversity around the Cape Verde Archipelago. The study identified three key mechanisms driving nutrient transport and found that physical dynamics influence not only productivity but also the type of organisms present.
Researchers propose pathways for synergies between marine spatial planning and marine protected area planning under a rapidly changing climate. Key aspects of MSP and MPA planning set them apart, including zonation, scale, stakeholder involvement, systems view, and climate considerations.
Research in China's Greater Bay Area found that almost 6,000 vessels move daily, leaving little space for nature. The study highlights the need for conservation efforts and sustainable management of coastal development.
Researchers at Kobe University discovered that red algae use structural color to communicate with each other. The discovery was made in the European Journal of Phycology and suggests that these colors may serve as a warning signal to algae-eating fish.
Researchers warn that artificial oxygen input cannot replace comprehensive water protection strategies. Technical approaches have shown promise, but risks include intensifying greenhouse gases and disrupting marine habitats. Climate protection and reducing nutrient inputs remain crucial for mitigating ocean oxygen loss.
A new study finds that ocean-based carbon dioxide removal (CDR) and storage in German waters is feasible but with limitations, such as local marine conditions and required materials, energy, and infrastructure. Only five methods were shortlisted for implementation in German North Sea and Baltic waters.
Research shows fish species like Atlantic cod and hagfish contribute significantly to seabed ecosystem health. Bioturbation impacts on organic carbon storage and greenhouse gas absorption are crucial for understanding ocean's role in climate change.
The deep sea accounts for 90% of ocean volume and hosts diverse ecosystems. However, human activities like mining and climate change threaten these areas. Scientists emphasize the need for major investment in deep-sea research to address knowledge gaps and inform sustainable management strategies.
Analysis of citizen science data suggests that warmer ocean temperatures can increase loggerhead sea turtle nesting sites along Italy's coastlines. Preserving natural beaches is crucial for maintaining these habitats.
Research reveals thousands of chemical compounds derived from coral reefs and seaweeds are available for microbial decomposition and utilization. Microbes can break down previously thought-to-be-harder-to-degrade chemicals, such as benzene rings and steroids.
A recent study found that coral reef restoration efforts are hindered by small-scale programs, high costs, and targeting already compromised reefs. The researchers argue that scaling up restoration efforts is unlikely to offset climate change-driven losses, and suggest bolstering ecosystem resilience through complementary strategies.
A study found that a hydrothermal system created by an asteroid impact helped marine life flourish in the Gulf of Mexico for at least 700,000 years. The system generated and circulated nutrients, supporting high-nutrient environments that favored certain types of plankton.
A multidisciplinary survey in the eastern Indian sector of the Southern Ocean found that the southern boundary of the Antarctic Circumpolar Current has shifted southward, causing a change in water temperature and mac zooplankton composition. The survey also estimated the biomass of Antarctic krill in the area, with comparable results t...
PET-based glitter microplastics promote calcium carbonate crystallisation in seawater, altering natural biomineralisation processes in marine organisms. The study's findings suggest that glitter microplastics can degrade rapidly, releasing smaller fragments that are easily ingested by marine life.
Researchers have discovered that some fish, known as blue runners, hide behind sandbar sharks to launch high-speed attacks on smaller fish. The shadowing behavior improves their chances of success and may protect them from predators and conserve energy.
The Pew Fellowship in Marine Conservation awards $150,000 grants to midcareer scientists from five countries. The new cohort of fellows will develop coral breeding techniques, evaluate critical conservation measures with local communities, and help preserve threatened marine species and their habitats.
A recent study reveals that microplastic pollution decreases photosynthetic efficiency by 7.05–12.12% across terrestrial plants, marine algae, and freshwater algae, leading to estimated annual losses of 4.11–13.52% for key staple crops like rice, wheat, and maize.
A new USF study identifies several viruses associated with Karenia brevis, the single-celled organism causing red tide. The finding marks an initial step toward exploring viruses as biocontrol agents for red tide blooms.
New Zealand's beaches were once home to elephant seals, a species that has largely disappeared due to climate change and human activity. The study reveals that the animals' dynamic evolutionary history provides insights into how they may be impacted in the future.
Researchers at Schmidt Ocean Institute have discovered vibrant communities of ancient sponges and corals in the wake of recently detached iceberg A-84. This observation sheds new light on the resilience and adaptability of Antarctic ecosystems.
Despite decades of overfishing warnings, Southeast Asia's catch fisheries have maintained biodiversity and ecological health, with a three-fold higher ratio of underfished stocks compared to the global average. This study highlights the benefits of non-species-selective multispecies fishing practices in promoting sustainable fisheries.
Marine animals are being used to gather valuable data on human impact on the ocean. Biologging, attaching sensors to wild animals, provides insights into environmental conditions and behaviors. The goal is to develop an 'Internet of Animals' with shared standards for data sharing, enabling targeted policies and a sustainable coexistence.
A study using a unique moored platform in the Sargasso Sea found that hurricanes can transport sediments from shallow-water reefs to the deep ocean, affecting the environment for weeks. The study demonstrated how much of an impact hurricanes can have on the deep environment, with significant effects lasting for near decades.
Researchers found a unique ecosystem in the deep waters of the Farasan Bank coral reef system, where corals and fish adapted to survive in low-oxygen environments. The discovery highlights the need for further marine exploration and conservation of these extreme habitats.
A recent USF study found that strong ocean currents and wind pushed sargassum into the tropics, where it thrived in ideal growing conditions. Nutrients were supplied via vertical mixing, fueling massive blooms that end up on Caribbean beaches.
A new study by the University of Plymouth investigated the effect of changing global climate conditions on Christmas Island's red crab embryos. The researchers found that lower salinity levels did not delay embryonic development, but emphasized the need for further research to understand the species' response to environmental stressors.
Research reveals that warmer conditions in Antarctic waters lead to changes in microbial community composition, with bacteria dominating over phytoplankton. This shift can decrease biological productivity and affect the global food web.
Whales play a critical role in moving nutrients across ocean basins through horizontal transport in their urine. Scientists estimate that great whales transport approximately 4,000 tons of nitrogen each year to low-nutrient coastal areas in the tropics and subtropics.
Researchers found that some coral reef fish exhibit higher thermal tolerance in the Arabian Gulf's variable thermal environment, but overall biodiversity is lower. This suggests that only certain species can adapt to environmental changes, and highlights the need for further investigation into climate change impacts.
A study predicts East Coast estuaries will face devastating consequences from increased marine heat waves, with potential ecosystem collapse and job losses. The researchers found strong connections between estuaries in similar geographic regions, driven by atmospheric heat exchange.
A recent study published in Nature Communications provides detailed data on the far-field spatial footprint of mining-induced plume dispersion and redeposition beyond the mining area. The research found that sediment concentrations were up to 10,000 times higher near the mining site and returned to normal levels after 14 hours.
Researchers have found unique fish species in deep-sea oxygen-depleted zones of a Red Sea coral reef system. Lanternfish and other species thrive in conditions where oxygen levels are less than 2 μmol kg’¹
New CU Boulder research reveals sea otters play a vital role in kelp forest recovery, with their influence varying by region. The study found that sea otters in Southern California had a slower impact on kelp forests due to complex web interactions with other species.
Citizen science data from scuba divers reveals distinct seasonal patterns among shark species, including hammerhead sharks and tiger sharks. The study also identified changes in shark populations over time, with some species increasing in abundance while others decrease.
A GEOMAR study detects high levels of munitions chemicals in Baltic Sea water samples, with concentrations approaching critical levels. The contamination is expected to increase without removal action, posing a long-term environmental risk.
The increasing extraction of sand across the world is causing significant harm to marine ecosystems, leading to coastal erosion, habitat destruction, and the spread of invasive species. Integrating sand mining into broader environmental policies is crucial to mitigating its impacts.
Researchers at University of Hawaii at Manoa have discovered 10 new marine sponge species in Kāneʻohe Bay, expanding our understanding of sponge biodiversity in the Hawaiian archipelago. The discovery sheds light on the crucial role sponges play in regulating and sustaining coral reef ecosystems.