The Chesapeake Bay saw a 7% increase in underwater grasses in 2025, with gains in salty waters, reaching 89,385 acres. However, regional declines were observed, particularly in the Tidal Fresh Zone and Virginia tributaries due to invasive aquatic plant reductions.
Researchers provide a framework to assess cumulative heat exposure from marine heatwaves and preceding/post-warming anomalies, revealing underestimation by historic assessments. The study finds that prolonged warm water exposure can create conditions that species may not survive.
The partnership generates valuable bathymetric data through vessel operations and lost crab trap removal, enhancing navigational safety and coastal models. The new dataset will be publicly available for researchers, agencies, and coastal managers to support commerce.
A new study from the Batten School & VIMS provides a detailed analysis of marine heatwaves (MHWs) in the Chesapeake Bay, going beyond surface-water datasets to include subsurface patterns. The research introduces a classification scheme that reveals the complex nature of MHWs and their impact on ecosystem health.
A new study found that coastal farmlands in the Mid-Atlantic region are losing land at a rate nearly twice as fast as previously thought. Between 1984 and 2022, approximately 25,000 acres of farmland were lost to sea level rise despite preventative measures taken by local farmers.
A new study found that lobster eggs host surprisingly diverse microbiomes that change as the embryos develop but remain stable under conditions simulating future environmental conditions. The findings challenge decades of assumptions about disease risks in the American lobster fishery.
A study reveals that Atlantic mangrove fiddler crabs are settling into temperate salt marshes along the southeastern US coast due to climate change. The species is expanding its range northward, with some populations reaching as far as South Carolina, and may soon spread to North Carolina.
New research reveals oyster filter feeding significantly reduces transmission of deadly Hematodinium perezi parasite in Chesapeake Bay's juvenile blue crabs. Oysters eliminated over 60% of parasites within an hour, reducing infection risk by one-third.
The National TRAP Program has awarded $1.8M to 13 projects focused on removing derelict fishing gear from US coastal waters, resulting in the removal of over 7,000 traps and 300,000 pounds of debris. The program aims to improve derelict trap prevention and mitigation through data analysis and policy recommendations.
Researchers at William & Mary's Batten School and VIMS have successfully restored bay scallop populations to their former range along the Eastern Shore of Virginia, with an average density of 0.114 scallops per square meter. The population is expected to double in less than 1.5 years, potentially leading to a future recreational fishery.
A new study reveals diverse relationships between fish and sea anemones, showing mutual benefits in carrying larval polyps for defense. The findings suggest a previously unseen form of symbiosis, where the anemone benefits from dispersion via the fish.
Research suggests that American lobsters are more resilient to ocean acidification than previously thought, but they are highly sensitive to heat stress. The study found that warmer water led to faster embryo development, but smaller larvae with decreased survival prospects in the wild.
Researchers found that commercial fisheries benefit from natural fluctuations in the ecosystem, but these benefits are mediated by management and human behavior. Diversifying catches across species can provide stability and protect watermen from boom-and-bust cycles.
A literature review highlights the importance of ditches in managing water resources, mitigating pollution, and anticipating environmental changes. Ditches can host unique ecosystems, feature rare species, and serve as sentinels for monitoring water quality and sea level rise.
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.
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 published in PLOS One suggests that a parasitic worm can serve as a valuable biomarker for managing blue crab populations in the Chesapeake Bay. The worms, which infest and live on the egg clutches of female blue crabs, have been found to have a wide salinity tolerance and can survive at lower salinities than previously tho...
The 2024 US sea level 'report cards' provide updated analyses of sea level trends and projections for 36 coastal communities. Most locations continue a trend of accelerating sea level rise, with notable exceptions in southeastern states and West Coast localities.
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 study led by Alexandria Marquardt suggests that Virginia's oyster restoration practices are effective in increasing fishery sustainability and supporting local economies. The research shows that shell replenishment activities, combined with rotational harvests, result in improved reef structure and increased commercial harvests.
The National TRAP Program has awarded $1.4 million to fund 11 projects in nine US states and Palau to remove derelict fishing gear from coastal waters. This initiative aims to standardize data collection practices and establish a national database to evaluate the environmental and economic impacts of these efforts.
A recent study by researchers at the Virginia Institute of Marine Science found that female American lobsters groom their offspring without significant impact from temperature and acidity levels forecasted for Maine's coastal waters. This behavior is crucial in other crustaceans, but its importance for the lobster species remains uncle...
A new species of Antarctic dragonfish, Akarotaxis gouldae, has been identified in waters off the western Antarctic Peninsula. The discovery highlights the fragile state of the Antarctic ecosystem and raises concerns about the impact of commercial fishing activities on this vulnerable species.
Researchers propose eight research questions to improve mixoplankton classification and study their role in the food web. This knowledge is crucial for predicting ocean ecosystem changes under climate change.
New research demonstrates that incorporating widgeongrass into seagrass restoration efforts can increase the portfolio of species diversity and enhance long-term success. The study found that seeding widgeongrass in the fall with minimal pre-treatment resulted in highest survival and growth rates.
The study found that widgeongrass has expanded over 150% in the past few decades, outcompeting eelgrass in Chesapeake Bay. This shift has implications for conservation and management of seagrass ecosystems.
During Hawaii's COVID lockdown, researchers found that species displaced by human presence moved back into shallow habitats, increasing fish biomass and predator populations. However, when tourism resumed, predators returned to deeper waters, reducing biomass and habitat use to pre-pandemic levels.
A recent VIMS study uses a new computer model to simulate the impact of sea-level rise on coastal carbon storage. The research found that moderate rates of sea-level rise enhance plant productivity and carbon preservation, while rapid rise rates can lead to marsh collapse and decreased carbon storage.
A new study finds that salp blooms can offset as much CO2 as emitted by millions of cars, with some estimates suggesting up to 28,000 vehicles. Salps' unique features and rapid reproduction lead to large amounts of carbon being exported to the deep sea.
A new laboratory study shows that microplastics increase the severity of an important viral fish disease. Nylon fibers had the greatest impact on disease severity. The findings have major implications beyond fish farming, affecting human health and natural environments.
Research by Dr. Jessie Turner and colleagues highlights the impact of water-clarity metrics on seagrass and light-loving organism restoration goals. The study suggests that different measurement methods can misrepresent underwater light climates, emphasizing the need for clear communication of methods used.
Researchers observed blue crabs digging shallow pits that fill with water and waiting for prey to come to them. The attacks were successful 33% of the time, making it an efficient hunting strategy.
A new study finds that coastal wetlands in rural US areas will persist or expand due to rising sea levels, not be slowed by human barriers. The Chesapeake Bay region is expected to experience significant land loss, with over 600 square miles predicted to become inundated by 2100.
The study found consistent trade-offs between resistance and resilience across four ecosystems: freshwater, saltwater, wetland, and terrestrial. Managing for increased resistance may result in decreased resilience, highlighting the importance of choosing the right management strategy.
A long-term study in the Southern Ocean shows a clear correlation between warming waters, decreased sea ice, and reduced abundance of Antarctic silverfish. The study suggests that these small fish are crucial prey for penguins, seals, and other regional marine life.
Marine heat waves in the Chesapeake Bay are projected to increase by half a year by 2100, causing devastating impacts on marine life and coastal economies. The study found a significant upward trend in frequency and intensity of marine heat waves within the Bay.
A new study by Virginia Institute of Marine Science researchers maps the conditions most suitable for key species of forage fishes in the Chesapeake Bay, offering guidance for protecting or restoring their habitats. The analysis reveals that factors such as water depth and temperature affect the abundance of forage fish, with some spec...
A new study reveals zooplankton exhibit high-frequency 'mini-migrations' due to cloud shadows, affecting their energy expenditure and carbon transport. The daily process of swimming up and down in response to subtle changes in light intensity may have significant implications for Earth's carbon cycle.
A new study reveals that a changing parasite is behind the intensification of oyster disease in the Chesapeake Bay region. The emergence of a more virulent form of Perkinsus marinus, caused by evolutionary pressures from a non-native parasite MSX, led to a sharp increase in disease prevalence and deadliness.
Researchers at VIMS are creating an AI-powered fishing app using angler photos to train software to identify fish species. The app aims to provide anglers a field guide and scientists with a collaborative tool for better management of recreational species, while contributing to sustainable fisheries management.
A study suggests that continued warming of Atlantic coastal waters may enhance the spread of invasive blue catfish within the Chesapeake Bay and other estuaries along the U.S. East Coast. Warmer waters favor the spread and establishment of blue cats, which can out-compete native species.
A team led by VIMS researchers is studying the impact of ocean acidification on oysters and their aquaculture in the Chesapeake Bay. The goal is to develop tools for forecasting acidification thresholds to help growers make informed decisions.
A recent study found that biodiversity is vital at regional scales, not just local ones, to maintain stable ecosystems. This research can inform conservation planning and make human communities more sustainable by promoting biodiversity.
A long-term monitoring study shows seagrass restoration has substantial increases in fish and invertebrate abundance, water clarity, and carbon and nitrogen trapping. The project demonstrates a blueprint for restoring and maintaining healthy ecosystems to safeguard multiple benefits.
A new study suggests that increased rainfall in tropical regions will enhance soil respiration and decrease soil carbon stocks, leading to further intensification of global warming. This process could release significant amounts of CO2 into the atmosphere, exacerbating climate change.
The review highlights the global scope of microplastic pollution, affecting not just oceans but also land surfaces and the air. Researchers emphasize the need for holistic studies and improved analytical tools to understand microplastics' impacts on ecosystem health and human health.
Research reveals that seagrass species have evolved a winged seed trait that harnesses underwater currents to hold it on the seafloor for rooting. This adaptation allows seeds to maintain their position until they can grow anchoring roots, providing valuable insights for seagrass restoration efforts.
The annual Chesapeake Bay Dead Zone Report Card shows hypoxia in 2019 was within the normal range despite record river flow and light winds. This suggests that nutrient reductions since the 1980s have successfully improved water quality, with the dead zone lasting longer than in recent years.
Researchers at the Virginia Institute of Marine Science have found that blue catfish, an invasive species in Chesapeake Bay tributaries, can survive in waters with high salinity levels. The study suggests that these fish may be able to expand their range into mainstem Chesapeake waters and new Bay tributaries.
Researchers investigate how climate change affects communication pathways in ocean, revealing broad patterns and intriguing outliers. The study provides a conceptual framework to guide future research on the impact of climate change on marine organisms' behavior.