Articles tagged with Fisheries Management
A University of Washington study found that Pacific salmon in larger groups have lower predation risk, but may trade safety for food. The researchers analyzed historical data on fish catches and predator wounds to estimate group size and predation risk, revealing the benefits and costs of schooling in marine fish.
A new sorting technology at Chalmers University of Technology reduces fish waste by up to 50%, creating five nutritious cuts from the whole fish. The innovation is being implemented in a Swedish herring processing plant, which aims to produce healthier and more sustainable food products.
Two Rutgers studies project that offshore wind farms will reduce Atlantic surfclam catches by 3-15%, with losses reaching 25% in New Jersey. A spatially-explicit model, SEFES, predicts impacts on fishing behavior and revenue.
Seagrass meadows are a crucial fishing ground for millions of households in the Indo-Pacific region, providing reliable access to fish and other animals. Research reveals that households with lower income rely more heavily on seagrass due to its proximity and accessibility.
A major new study is investigating the effects of beavers on the Arctic landscape, other animals, and local Indigenous communities. The project aims to understand the complex interlinkages between ecological and sociological changes as beaver numbers increase.
Researchers at UBC's Sea Around Us initiative identified four high-traffic areas in the Pacific Ocean as crucial for conserving large pelagic fishes like tuna and swordfish. By analyzing migration routes, genetic sequencing studies, and catch distribution maps, they pinpointed 'blue corridors' where strict fisheries management measures...
The world's ocean is losing its year-to-year memory due to global warming, making it harder to predict ocean conditions. This decline in ocean memory will have significant impacts on fisheries management, population estimates, and land-based weather forecasts.
A new study by UBC researchers found that climate change is altering the species served on Vancouver restaurant menus, with warmer waters favoring Humboldt squid and sardines. This shift may lead to reduced availability of sockeye salmon, making way for other fish species.
A new Stanford University-led study uses machine learning and human insights to map regions and ports most at risk for illicit practices, like forced labor or illegal catch. The results highlight two main risk factors: the vessel's flag state and type of fishing gear onboard.
A massive dataset reveals complex ecological relationships between sharks and game fish, offering a clearer understanding of their interactions. The study's innovative use of acoustic telemetry and machine learning helps inform fisheries management strategies to protect both species.
Scientists from around the world gather to discuss various amphibian and reptile diseases, with a focus on conservation and management strategies. The conference aims to identify solutions to mitigate the impact of these diseases on herpetofauna populations, which are currently experiencing alarming extinction rates.
The expanded protected area protects fourteen marine mammal species and improves connectivity of the Eastern Tropical Pacific Marine Corridor. The new management plan prohibits fishing in two-thirds of the area and allows sustainable fishing, reducing bycatch and promoting conservation.
New research suggests that slow degradation of recreational fisheries is common due to changes in technology, infrastructure, and angler attitudes. Anglers and managers can stabilize and improve fisheries by embracing challenges, reducing fishing mortality, supporting monitoring funding, and managing high catch rates.
Researchers analyzed mollusk shells at 4,000-year-old shell ring villages in Georgia and found environmental changes drove the formation and abandonment of these coastal communities. Smaller oyster shells and lower salinity conditions suggested depletion in oyster stocks and unsustainable fishing practices.
Researchers analyzed 280 confirmed sea turtle entanglements in Massachusetts waters and found that quickly reporting incidents can improve survival rates. The study highlights the importance of complete disentanglement to minimize injury and promote survival, with many turtles being alive weeks to years after being disentangled.
Scientists have discovered Atlantic cod, armhook squid, and lanternfish in the deep waters of the Central Arctic Ocean, rewriting the understanding of this ecosystem. The findings suggest that these species can survive in Arctic temperatures and contribute to the food web.
A new study found that 85% of coral reef fish species are overfished due to increasing human demand for seafood. The research team developed a risk analysis framework to provide a blueprint for reducing overfishing and protecting these valuable fish populations.
Researchers developed unprecedented insights into the natural and commercial flow of fish, highlighting the importance of inclusive approaches to fisheries management and conservation. The study's findings indicate a strong connection between larval dispersal and catch distribution in Hawaii, emphasizing the need for community-based ma...
According to a new study, climate change will force 45% of transboundary fish stocks to shift significantly by 2100, raising tensions and potential conflicts over resource management. This shift will disproportionately affect tropical countries and potentially collapse international agreements.
Researchers found that dynamic ocean management is more effective in reducing accidental catch than permanent marine protected areas. Dynamic closures track real-time data and close smaller areas as species hotspots shift, resulting in up to 57% reduction in bycatch.
A new study reveals that coral reef ecosystems support diverse small-scale fisheries, providing essential micronutrients vital to the health of millions in the tropics. Following bleaching events, reef fisheries can remain rich sources of these nutrients, even increasing their nutritional value for some minerals.
A new machine learning algorithm can accurately identify fish calls from hydrophone data, enabling efficient analysis of marine environments. The method has implications for understanding changes in ocean conditions and coral reef health.
A new study projects that farmed seafood supply will drop by 16% globally by 2090 if no action is taken to mitigate climate change. The industry is vulnerable to the effects of climate change, and some regions could see a decline in mariculture production by up to 90%.
New research explores how climate extremes affect the West Coast Dungeness crab fishery and its impact on whale conservation. The study recommends combining improved forecast systems, technological innovations, and understanding human behavior to reduce whale entanglements.
A new holistic framework helps fisheries identify actions for resilience, empowering them to withstand climate change impacts. The tool considers ecological, governance, and socio-economic dimensions, shedding light on potential risks and weaknesses.
Two hundred ninety scientific researchers from 46 countries urge the World Trade Organization (WTO) to ban harmful fisheries subsidies that contribute to overcapacity and overfishing. The signatories cite research showing that such subsidies lead to unsustainable fishing practices, contravening UN Sustainable Development Goal 14.
Researchers found that most anglers weren't thinking about how invasive species could affect their own lives, highlighting the need for personalized messaging. Tailoring education campaigns to an angler's values and risk perceptions can motivate action, such as decontaminating boats or attending cleanup events.
Research led by VUB team shows that global changes in lake temperature and ice cover are caused by human-induced climate change, posing a threat to water quality and native fish species.
The global coral reef crisis is characterized by widespread overfishing, pollution, disease, and climate change. The report highlights the need for swift action to address these issues and identifies management efforts such as reducing pollution and establishing marine protected areas.
A new study projects that marine heatwaves will wipe out hundreds of thousands of tonnes of fish available for catch in a country's waters by the century's end. Researchers warn that extreme temperatures will exacerbate impacts on fisheries and human communities, leading to significant job losses.
Research confirms two separate tiger shark populations in the Atlantic and Indo-Pacific oceans, despite trans-oceanic migrations. This long-term separation has resulted in distinct genetic diversity among Hawaiian and Indian Ocean tiger sharks, emphasizing the need for tailored management plans and targeted conservation efforts.
Scientists at UEA have identified a way to determine the age of lobsters using DNA. The method is based on quantifying DNA changes that accumulate with age within a lobster. This breakthrough could help manage lobster fisheries more sustainably by providing accurate estimates of lobster ages.
Researchers found that non-native warmwater fish species like walleye and bass consume more baby salmon than native fish in Oregon's reservoirs. The study used stable isotopes and stomach contents to identify which predators eat the salmon fry, revealing that walleye are the main consumers.
A new study highlights the need to balance wildlife conservation with local community needs in Peru and Chile. Small-scale fisheries are struggling due to protected sea lion and seal populations, which compete for resources and damage fishing gear.
Researchers at OIST and Tokyo University of Marine Science and Technology have developed a genetic resource for the kuruma shrimp, a species prone to white spot disease. The genome sequence has identified genes related to disease resistance, which could be used to establish a disease-resistant line of shrimp.
Researchers found that areas protected under 'whole-site' Marine Protected Area (MPA) status have four-fold increases in fish abundance and diversity compared to unprotected areas. The study also showed significant benefits for commercially important fish species and conservation.
A systematic review of 169 conservation projects worldwide reveals that Indigenous and local communities are crucial for successful nature conservation. The study found that equitable conservation approaches, empowering local communities, yield positive outcomes for both humans and the environment. However, complex factors such as comm...
A new analysis found that managing large, prolific fish is crucial for improving fisheries productivity and sustainability. The study suggests that better protection of these fish can lead to a reduction in overharvesting and an increase in sustainable catches.
A new study from Oregon State University found that climate conditions significantly affect the reproductive success of mature female Antarctic krill. The researchers discovered a relationship between the condition of these females during spawning season and the proportion of juvenile krill in the population the following year.
A study published in Fisheries Magazine explores how colonialist attitudes toward native fishes were rooted in elements of racism and sexism, leading to overfishing and degradation of native species. The study recommends shifting to a new paradigm that's more inclusive and beneficial to all fish and people.
Fishers in the Northeast US have adopted three strategies to cope with climate-related changes in fish distribution and abundance. They shift their target species, change where they fish, or sell their catch at different ports. Regulations often constrain these adaptations due to conservation measures and market constraints.
A new study by Newcastle University highlights the risk of dolphins and porpoises being caught in small-scale (artisanal) fisheries, particularly in low- and middle-income regions around the tropics and sub-tropics. The study's findings emphasize the need for international collaboration and cooperation to address this threat and balanc...
A new study reveals that fish biodiversity can provide benefits to mixed-stock fisheries, such as stabilizing catches, but comes with the cost of increased conservation risks. By targeting specific productive stocks and avoiding unproductive weak ones, fisheries can maintain high harvest rates while reducing these risks.
Marine scientists call on EU to adopt a two-step approach to reduce bycatch levels, involving quantitative management objectives and monitoring programmes. The experts recommend using electronic monitoring systems and regular formal assessments of small cetacean populations.
A recent study using tagging and mark-recapture methods found that Maryland's recreational blue crab harvest amounts to 11% of the total male commercial take, compared to the previous estimate of 8%. The study aimed to provide a more accurate picture of recreational crabbing in the state.
A genomic study of over 500 common dolphins across 1,500 sq km reveals complex population structure and connectivity across state and international jurisdictions. The research emphasizes the importance of inter-jurisdictional collaboration to mitigate fisheries interactions and protect dolphin populations.
Researchers at Oregon State University used thousands of genetic markers to determine the Pacific albacore's population structure. The study found that fish from different hemispheres intermingle and sometimes breed with each other, revealing a lack of clear boundaries between North and South Pacific populations.
Researchers found that diverse groups created models closer to expert-developed models than homogenous groups. This highlights the benefit of diversity in collective problem-solving for complex issues like fisheries management.
A new study published in Nature Sustainability found that more management measures employed in fisheries lead to better outcomes for fish populations. The research team analyzed data from nearly 300 fish populations and confirmed that increased management attention is linked to healthier fisheries.
A study by Arizona State University found that approximately 3.4% to 4.3% of consumed seafood is mislabeled, with substituted species coming from fisheries performing worse in terms of population impacts 86% of the time.
A comprehensive analysis finds that traditional salmon fishing practices and governance show promise for rebuilding resilient fisheries. Indigenous communities' focus on terminal fisheries and selective fishing tools can deliver better results for all communities.
A new study proposes a cost-benefit analysis to guide the management of non-indigenous species in the Mediterranean, highlighting their potential benefits. The research suggests policy reforms for sustainable fisheries management, while also promoting commercial over-fishing and NIS-specific licences.
Mislabeling seafood products in the US results in 190,000-250,000 tons of environmentally damaged products being sold annually. Collaborative approaches are needed to reduce seafood mislabeling and its negative impacts on marine population health and fishery management.
A study by Advanced Conservation Strategies reveals that conditions exist for seafood mislabeling to lead to negative outcomes on marine populations. Researchers estimate that Americans consume between 420-550 million pounds of mislabeled seafood every year, with much of it coming from imported products.
A new study reveals that a nuclear war could lead to significant losses in wild-caught seafood, potentially rivaling the impacts of climate change on fisheries. The team estimates that a large-scale nuclear conflict could reduce seafood production by as much as 30%, with potential losses of tens of millions of tons per year.
A study by Rutgers University suggests that pre-war fisheries management could boost ocean protein contributions during a global food emergency, but widespread overfishing would not offset land-based food losses after a nuclear war. Effective regulation could lead to significantly higher catches in the first year post-war.
A UBC study identified over 633 exploited transboundary fish species worldwide, with catches and revenues severely underestimated. The catch from these fisheries had been heavily skewed towards a few countries, including China, the USA, Russia, Peru, and Japan.
A new study found that early-arriving endangered Chinook salmon experience an additional 20% mortality due to sea lion predation. The study also showed that the numbers of California sea lions are highest at the mouth of the Columbia River, increasing exposure to predation.
A pilot study tested the effectiveness of drones in measuring Atlantic bluefin tuna, showing they can capture images of individual fish and schools with high accuracy. The use of drones may supplement traditional fishing methods and provide valuable data for fisheries management.
A new study reveals that oceanographic conditions in the Gulf of California drive the origin of new shark and ray species, challenging traditional assumptions about species evolution. Four types of guitarfish have been identified, each adapted to a specific region, with improved survival and reproduction odds.