A new system for sampling fragments of DNA from marine organisms drifting in the ocean has been developed, enabling researchers to monitor biodiversity and conservation efforts on a global scale. The innovative approach uses water collected from engine cooling systems on commercial vessels, allowing for large-scale surveys of marine ec...
Climate change and metal pollution have substantially altered Hong Kong's marine communities, particularly in eastern waters, according to a recent study published in Anthropocene. The researchers used small fossil shells to reconstruct the ecosystem over the last 50-100 years, revealing significant impacts on rare species.
A new study found that global marine ecosystem models differ widely in their representation of key processes, leading to underestimation of climate change impacts. Marine ecosystem models generally agree on biomass decline but disagree on magnitude and location across the world's oceans through the 21st century.
A study analyzing over 120 million social media posts reveals that tourists focus more on nature in marine protected areas than neighboring coastal zones. The research found that these areas provide more cultural ecosystem services than adjacent coastal areas.
A recent study found that microplastic ingestion by dinoflagellates lowers their growth and abundance, affecting the larger marine animals that feed on them. The impact is significant, with energy transfer up the food chain reduced by as much as 30%.
A new study published in Frontiers in Marine Science reveals that small juvenile marine turtles from the Indian Ocean and Pacific Ocean have a high incidence of plastic ingestion. Plastic ingestion is suspected to lead to mortality, malnutrition, and chemical contamination. The types of plastic ingested vary between the two study sites...
In low-nutrient environments, marine microbes form consortia with ciliates to capture nutrients. This cooperative solution increases nutrient flux to the diatom's cell surface up to 10 times greater than alone. Researchers used PIV technology to measure fluid flows and found a more favorable solution for low-mixing conditions.
Researchers demonstrate that microbial fixation of nitrogen can occur on marine snow particles, leading to low oxygen concentrations and enabling anaerobic N2 fixation. The study's model shows the depth distribution of N2 fixation in the marine water column, highlighting the importance of particle size, density, and sinking speed.
Repela Tech LLC, a Detroit-based sustainability tech startup, is developing a novel non-toxic antifoulant coating to protect ships and boats from biofouling. The coating aims to reduce drag, fuel consumption, and CO2 emissions, benefiting the global shipping industry.
A recent study identified 363 marine invertebrate RNA viruses from 58 samples, revealing high genetic diversity and elasticity. The findings suggest possible virus transmission across different ocean areas and host species, shedding light on the origin of hantaviruses.
A large-scale survey found that both Europeans and Australians are highly concerned about the human health impact of marine plastic pollution, ranking it as a top threat. The study suggests a need for more research into the potential impacts on human health to inform policy and decision-making.
Panama has expanded its Coiba protected area, covering 98,228.25 square kilometers, to achieve the 30x30 Initiative's goal of protecting 30% of the world's marine surface nine years early. The expansion protects unique underwater mountain ranges and migratory marine species.
A new study finds that marine conservation initiatives can have negative impacts on community livelihoods, including increased anxiety and social division. Researchers recommend that conservation efforts should follow social impact assessments and provide livelihood support for affected communities.
Researchers found that smaller marine snow particles, which are abundant and sink slowly, transport more nitrogen than larger flakes. This discovery is crucial for improving Earth system models and understanding the marine nitrogen cycle.
Scientists have discovered that bacteria found in brackish sediments can 'eat' electricity and absorb climate-warming carbon dioxide. This unusual skill was previously thought to be exclusive to freshwater bacteria, but may be common in marine bacteria.
This article provides an overview of sulfur-containing natural products from marine microorganisms, highlighting their molecular diversity and bioactivities. A total of 484 compounds were recorded, with 59.9% being thioethers, 29.8% being thiazole/thiazoline-containing compounds, and 10.3% being sulfoxides, sulfones, and thioesters.
A new study reveals widespread plastic pollution in Galapagos seawater, beaches, and animals, with over 400 plastic particles found per square meter on some beaches. Microplastics were also discovered inside more than half of the marine invertebrates studied, posing a potential threat to the ecosystem.
A recent study revealed a small yet healthy white shark population along the Central California coast, consisting of around 300 individuals. The researchers identified and tracked individual sharks using unique dorsal fin patterns, showing modest growth in the adult population.
Scientists have identified two marine biodiversity refugia in the Eastern Bering Sea, where species richness and community stability are high. These regions, covering less than 10% of the study area, harbor 91% of analyzed species and support commercially important fish and crab populations.
A recent study found that invasive Clavelina oblonga marine fouling species reduces diversity in communities it invades and interferes with their recovery following natural disasters. The study suggests that succession patterns do not hold true in the presence of invasive species.
A trawl ban has led to significant increases in the richness of species and abundance of benthic marine organisms. The study found substantial reductions in suspended solids and increases in total organic matter after the ban.
Researchers at FSU's Center for Ocean-Atmospheric Prediction Studies have developed a new virtual tool to track marine litter in the ocean. The tool provides insights into where mismanaged plastic waste is released and ends up, informing policies and regulations to mitigate its impact.
The 'MiningImpact' project monitors the first in-situ test of a prototype collector vehicle, assessing environmental impacts of deep-sea mining on ecosystems. The study aims to inform improved standards for mining codes, focusing on ecosystem health and biodiversity loss.
Researchers map human impacts on threatened and near-threatened marine species over time, revealing widespread and intensifying pressures. Corals are found to be severely impacted across their entire ranges, with climate-related impacts increasing in severity.
The Pew Charitable Trusts has named 9 distinguished researchers as 2021 recipients of the Pew fellowship in marine conservation. The new fellows will undertake projects addressing ocean conservation and management needs globally, from improving shark conservation to studying coastal habitats.
A review of 126 marine mammal species reveals that accidental capture, climate change, and pollution are driving declines. Conservation efforts have saved some species, but many more are at risk, including the vaquita porpoise and North Atlantic right whale.
A new study reveals that intense summer blooms of phytoplankton alter the structure of coastal benthic systems in Antarctica. The research team analyzed C and N stable isotopes to identify ecological niches of marine species, finding a significant geographical variation in carbon sources.
Bottlenose dolphins adapted to coastal construction by shifting feeding locations and behavior timings, but these changes persisted after construction. Human activities like dredging and pile driving cause significant stress and harm to marine wildlife, emphasizing the need for conservation policies.
A new study reveals that marine heatwaves are devastating the function of coraligen habitats in the Mediterranean, leading to a loss of structural complexity and essential ecosystem services. The impact is particularly severe for gorgonian corals, which provide shelter for over 1600 species.
A University of Hawaii study found that Oahu's marine protected areas do not adequately protect populations of herbivorous fish species that eat algae on coral reefs. The research suggests that environmental characteristics like habitat complexity and depth have a greater impact on these fish populations than MPA protection.
A study by researchers at the University of Bologna found that sea turtles have high levels of plastic debris in their faeces, which can alter their gut microbiota and compromise their health. The Adriatic Sea is a major hotspot for marine pollution, with over 10 million tons of plastic entering the oceans every year.
Researchers at the University of Miami have successfully cultured cells from coral and sea anemones for up to 12 days, opening new avenues for studying evolutionary biology and human health. The breakthrough uses antibiotic treatment to prime tissues before culture, allowing for longer and more robust cell cultures.
Researchers found that zooplankton grazing on phytoplankton results in higher DMS concentrations, allowing marine predators to track their prey. The study suggests that large marine animals use DMS concentration gradients to find food sources.
Researchers found a microalgal sugar that is resistant to microbial degradation, forming particles that sink to the ocean floor and store carbon. This discovery challenges the assumption that sugars are rapidly degraded by bacteria, making them an important carbon sink.
Researchers found that managing pot fishing intensity at an optimum level increases quality of catch, benefits environment, and makes industry more sustainable. The study provides evidence of a 'threshold' for pot fishing intensity, highlighting compatibility with marine conservation when managed correctly.
The global COVID19 pandemic may be an opportunity to rethink sustainable tourism's impact on Mediterranean beaches. Researchers found that 80% of marine litter comes from tourists' activities, generating huge amounts of microplastics.
A study by Carlos Duarte and colleagues reveals that human-generated noise pollution is negatively affecting marine animals, altering their behavior, physiology, and survivability. The authors argue that mitigating these impacts through regulation of sources can rapidly decline harmful effects.
A recent study found that viral-caused cancer in California sea lions is significantly increased by exposure to toxins in the environment. The disease has claimed 18-23% of adult sea lion deaths, highlighting the need for improved efforts to prevent ecosystem contamination with pollutants.
A recent study published in Microplastics and Nanoplastics journal concludes that marine litter in coastal systems has remained constant since 2019, with some components showing a decrease. The steady state scenario raises questions about the transfer of plastic litter to remote areas or degradation into smaller fragments.
Researchers used passive acoustics to study shell-crushing behavior in whitespotted eagle rays, distinguishing prey types based on acoustic features. The study provides critical data for conservation efforts and ecosystem monitoring in Florida's coastal waters.
A team of researchers at Flinders University has developed a sustainable way to produce protein 'superfoods' from marine algae. The process involves cultivating single-cell organisms from the ocean and converting them into healthy cell patties, chips, pastes, jams, and even caviar.
A new study found that partially protected marine areas, which allow some fishing, had no more fish, invertebrates, or algae and did not attract users more highly than open areas. In contrast, fully protected areas had higher biodiversity and were valued more by coastal users.
A study published in Scientific Reports reveals that Posidonia oceanica seagrass can trap and remove significant amounts of plastic materials from coastal areas. Researchers estimate that up to 867 million plastics could be caught per year, with a density of 1,470 plastics per kilogram of plant fibre.
A research team from the University of Miami used a 600-year-old marine sponge to reconstruct Atlantic Ocean temperatures, showing past volcanic activity and current global warming trends. The study's findings provide valuable insights into the impact of human activities on climate change.
The parasitic dinoflagellate Hematodinium infects marine crustaceans globally, resulting in mortalities due to organ malfunction. The pathogen has developed into an emerging epidemic threat to China's sustainable crab culture and wild populations.
Researchers identified successful coastal 'bright spots' for marine ecosystem restoration, which have delivered positive impacts for decades. These examples from around the world showcase effective techniques for restoring saltmarshes, coral reefs, and seagrass meadows, highlighting potential solutions to save struggling marine areas.
The study found that five of seven SDG 14 targets are achievable with spatial management tools, such as marine protected areas and fully protected areas. Single-sector tools are not effective for all targets, while multi-sectoral tools facilitate the achievement of a wide range of targets.
The study explores how independent transitions of marine fish species into different water column habitats result in the recurrent evolution of similar body shapes. This suggests that limited sets of high-fitness solutions exist due to environmental constraints.
A recent study by UC Santa Barbara and NOAA reveals that marine protected areas have little effect on mitigating the impacts of marine heatwaves on ocean ecosystems. The research found that the heatwave had a significant impact on fish communities within and outside MPAs, with non-targeted species being more responsive to the changes.
A study by UC Santa Cruz professor Terrie Williams explores how marine mammals' physiological adaptations can help understand the effects of COVID-19. Marine mammals have evolved mechanisms to protect critical organs during low-oxygen conditions, which may inform strategies for humans to mitigate long-term damage from oxygen deprivation.
A new study by Oregon State University researcher Will White found that most Channel Islands marine protected areas have no poaching and fish populations are thriving. Harvest rates were essentially at zero for four species of kelp forest fish inside the protected areas between 2003 and 2017.
Researchers at MBL found that small marine animals with multiple propulsers create negative pressure behind them to propel forward. This phenomenon, dubbed 'suction thrust,' is common among animals with metachronal kinematics.
Researchers Alli Cramer and Stephen Katz identified two key variables: gross primary production and substrate mobility, which sort biomes by their energy flow and ocean floor movement. This new classification system sheds light on the diversity of marine environments and highlights areas where human actions may impact ecosystem function.
A study by the University of York reveals that metal pollution from historic mining is weakening scallop shells, threatening marine ecosystems. The research found that contaminated seabed sediments with zinc, lead, and copper are causing brittle shell thinning, affecting the species' survival.
Researchers found that eco-engineered tiles with crevices can increase habitat complexity, enhancing marine biodiversity. The tiles provided shelter and reduced temperatures for animals, promoting a healthy ecosystem.
A multidisciplinary team will assess the significance of marine life to human societies during the last two millennia. The 4-OCEANS project aims to understand the consequences of marine resource exploitation for societal development, with a focus on informing the UN's Sustainable Development Goals and the Decade for the Oceans.
A Tel Aviv University study compared disposable dishes made of regular plastic and bioplastic, finding that both had a similar detrimental effect on marine animals. Bioplastics do not degrade rapidly in the marine environment, releasing toxins and harming marine life.
A new study reveals that decaying jellyfish blooms fuel the rapid growth of specific strains of seawater bacteria, keeping organic material within the water column food web. This process temporarily alters the food web, with bacteria consuming detritus and providing food for other marine animals.
A new study maps the appetites of coastal predators, showing that rising temperatures can shape entire communities of predators and alter biodiversity. The global 'BiteMap' was created using handmade squid baits called 'squid pops,' which were used to entice fish and crabs to reveal their feeding patterns.
A recent study mapped microbial diversity in marine sediment, revealing a rich ecosystem with diverse microbial communities. The research found that bacterial diversity exceeds archaeal diversity and is comparable to surface biomes.