Articles tagged with Fisheries Management
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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 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 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 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.
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.
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 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.
A University of Rhode Island researcher warns that climate change is causing increased conflicts between fishermen, fishing nations, and managers. Shifting fish populations and changing maritime boundaries are creating new challenges in global fisheries management.
A team of marine scientists has called on the UK government to overhaul its approach to marine conservation management, citing declining biodiversity and the need for more effective habitat repair and integration with fisheries management. The researchers recommend four key changes to increase ambition and support the UK's target of be...
The updated atlas provides detailed profiles for 14 shark species, including bull and tiger sharks, and significantly extends their known ranges and movements. The data collected through the Cooperative Shark Tagging Program has filled in gaps in the geographic distributions and movements of most shark species.
A new study from the University of Vermont suggests that ecological systems exhibit high levels of randomness, making it difficult to determine the effectiveness of management strategies. The research found that intermediate levels of management effort can lead to higher variability in outcomes.
Researchers developed a method combining empirical knowledge of fishery stakeholders with scientific understanding to identify ecological cause-effect relationships in pike populations. The collective intelligence of nature users accurately captured complex human-environment relationships, exceeding scientific knowledge in some cases.
A study reveals that effective fisheries management can increase fish stock abundance and reduce yield loss from overfishing. In regions with less developed management, high fishing pressure results in a three-fold greater harvest rate compared to well-managed areas.
A global analysis by the University of Washington found that nearly half of the world's fish catch comes from sustainably managed stocks. Effective management is credited as the main reason for these sustainable levels or successful rebuilding.
A 16-year study in Papua New Guinea found that rotational fisheries closures increased fish biomass and improved catchability. Socially cohesive leadership and high levels of policy compliance were key factors in implementing the system.
A recent study highlights the alarming exploitation of shark populations in Pacific Panama, with many species caught immature and vulnerable to intensive fishing. The research recommends implementing seasonal fishing bans and monitoring programs to improve conservation strategies.
A team of researchers created tools to incorporate social and cultural needs into fisheries management. The new models consider the trade-offs between economic, social, and ecological benefits. Spatial closures often resulted in wins, but areas marked for closure must be carefully considered.
A new tool has been developed to help manage the Nova Scotia lobster fishery in the face of climate change. The tool incorporates projected changes in ocean climate onto a geographic management area, enabling fishermen and resource managers to plan for future sustainability.
A new study using FAD tracking data, ocean models and simulation methods reveals the trajectories and potential impact of FADs on fisheries and island nations. The research found that over 2000 FADs wash up on beaches and coral reefs every year, with significant impacts on bycatch species and reef damage.
A study suggests that existing laws in the US and EU have adaptive and transformative capacities to respond to environmental changes. Innovative cooperation between government and nongovernment entities is necessary to leverage these capacities and keep up with environmental change.