Articles tagged with Marine Ecosystems
A team of international marine scientists urges reform to licensing and regulation of coastal restoration projects. The authors argue outdated systems hinder progress toward ambitious global targets to restore 30% of degraded ecosystems by 2030.
A new USF study suggests that nutrient upwelling and biological productivity remained stable despite higher global temperatures in the eastern tropical Pacific. The researchers found no evidence of reduced nitrate concentrations, a key nutrient for plankton, over the last five million years.
A global alliance of microbiology organizations has unveiled a joint strategy to integrate microbial science into climate policy, innovation and public discourse. The strategy aims to recognize microbes as vital allies in the fight against climate change and chart a clear course for microbiology organizations to lead by example.
The MiningImpact project is investigating the environmental impacts of deep-sea mining on ocean ecosystems. Scientists are studying biodiversity, genetic connectivity, and ecosystem health to develop indicators and threshold values for harm.
New research from Simon Fraser University finds that Pacific salmon face escalating threats from industrial development, climate change, and uncoordinated regulation. The authors suggest a cumulative effects management cycle to address gaps in policy and ensure enforceable thresholds.
The Mediterranean Sea is warming at a faster rate than the open ocean, posing significant risks to marine ecosystems. The study highlights the urgent need for action to protect these unique ecosystems, which could collapse or remain functional depending on political decisions made now.
A new study suggests that the shift from eelgrass to widgeon grass in the Chesapeake Bay could lead to a 63% reduction in invertebrate biomass by 2060. The change may favor smaller creatures and reduce the total animal biomass per square meter, impacting fisheries and ecosystem functions.
UCSB researchers warn that the ocean's cumulative impact will double by 2050 due to climate change and human activities. The tropics and poles are expected to experience the fastest changes in impacts, with coastal areas bearing the brunt of the increased pressures.
A new study found that when Hanauma Bay was closed to the public during the 2020 pandemic, the reef quickly returned to more natural levels. This led to clearer water, increased sightings of endangered Hawaiian monk seals, and more active fish populations.
A new study found potentially concerning concentrations of domoic acid in wild sea stars, which could have cascading consequences for marine biodiversity. The researchers also observed behavioral and physiological changes in response to the neurotoxin, raising concerns about its potential impacts on keystone species.
A recent study found that 62% of whale sharks in the Bird's Head Seascape off Indonesian West Papua have scars and injuries from preventable human causes. Simple interventions, such as modifying traditional fishing platforms and boat designs, could greatly lessen this burden on the local population.
A new ASU study identifies the most polluted areas of coastline in West Hawaiʻi and targets for remediation, providing critical data needed to mitigate sewage contamination. The research found that cesspools, septic systems, and coastal urban development are highly predictive of water contamination.
A new study reveals that heat can transform refractory organic matter into forms usable by microbes living far below the seafloor. This process, known as carbon-reactivation, occurs at temperatures above 35 °C and provides a significant energy source for deep Earth ecosystems.
A new study by William & Mary's Batten School and VIMS shows that tidal marshes in Virginia's Middle Peninsula generate approximately $90 million annually in economic value. The study also developed an online tool called SHORE-BET to help local planners and landowners weigh the long-term benefits of shoreline strategies.
A new study found that kelp forests within Marine Protected Areas (MPAs) recover more quickly after marine heatwaves, particularly in southern California. This suggests that MPAs can support ecosystem resilience to climate events like marine heatwaves.
Researchers have identified a previously undocumented class of PFAS in the blubber of killer whales, accumulating in fat-rich blubber. This discovery challenges the long-held assumption that PFAS primarily bind to proteins and accumulate in liver or blood.
The Kunming-Montreal Global Biodiversity Framework sets robust targets for protecting marine biodiversity, addressing its complexity and variability. By focusing on key indicators such as species distribution, genetic diversity, and ecosystem structure, policymakers can track changes and implement effective conservation measures.
Researchers found humpback whales lose 11,000kg of blubber during annual migrations, equivalent to energy from 57,000 kg of Antarctic krill. The study reveals a dramatic seasonal change in body condition, with whales fattest in autumn and slimmest in spring.
A recent study led by Kelton McMahon at the University of Rhode Island's Graduate School of Oceanography found that coral reef food webs are more fragmented and specialized than thought. The researchers used a novel technique called compound-specific stable isotope analysis to trace energy flows through the ecosystem, revealing distinc...
Researchers from Florida Atlantic University's Harbor Branch Oceanographic Institute have developed a multi-sensor biologging tag on the whitespotted eagle ray, enabling long attachment times and detailed data collection. The study provides insights into the rays' behavior, habitat use, and social interactions.
A new study by Macquarie University researchers found that adding colour to concrete panels increased marine biodiversity in Sydney Harbour. The team discovered that red panels supported communities distinct from other coloured panels, attracting higher numbers of green algae and barnacles.
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.
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.
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.
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.
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.
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.
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 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 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.