Successes and failures of conservation actions to halt global river biodiversity loss

Published: Jan. 20, 2025

Language: Английский

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Building use‐inspired species distribution models: Using multiple data types to examine and improve model performance

Ecological Applications, Journal Year: 2023, Volume and Issue: 33(6)

Published: June 7, 2023

Species distribution models (SDMs) are becoming an important tool for marine conservation and management. Yet while there is increasing diversity volume of biodiversity data training SDMs, little practical guidance available on how to leverage distinct types build robust models. We explored the effect different fit, performance predictive ability SDMs by comparing trained with four a heavily exploited pelagic fish, blue shark (Prionace glauca), in Northwest Atlantic: two fishery dependent (conventional mark-recapture tags, fisheries observer records) independent (satellite-linked electronic pop-up archival tags). found that all can result models, but differences among spatial predictions highlighted need consider ecological realism model selection interpretation regardless type. Differences were primarily attributed biases each type, associated representation absences, sampled environment summarized resulting species distributions. Outputs from ensembles pooled both proved effective combining inferences across provided more ecologically realistic than individual Our results provide valuable practitioners developing SDMs. With access diverse sources, future work should further develop truly integrative modeling approaches explicitly strengths statistically accounting limitations, such as sampling biases.

Language: Английский

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Red snapper in the Gulf of Mexico: Can offshore populations export larval subsidies to nearshore fishing grounds?

Fisheries Research, Journal Year: 2025, Volume and Issue: 282, P. 107271 - 107271

Published: Jan. 22, 2025

Language: Английский

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Ecotoxicological effects of soft plastic fishing lures on the benthic amphipod Hyalella azteca

Heliyon, Journal Year: 2025, Volume and Issue: unknown, P. e43068 - e43068

Published: March 1, 2025

Highlights•Ecotoxicological effects of various soft plastic fishing lures were compared•Even diluted lure leachates caused high mortality rates in Hyallela azteca•Toxicity was reduced the presence sediment•Brand-specific differences prevailed, providing choices for less harmful products•Hazardous related to need be considered and regulatedAbstractPlastic pollution by lost, abandoned discarded commercial gear is well characterized marine systems, whereas environmental impact lost recreational freshwater systems remains unclear. Especially are increasingly used, potentially contributing waterbodies release hazardous substances such as plasticizers. The objective this study compare water- sediment-borne acute toxicity three types commonly used with benthic amphipod Hyalella azteca. A standardized test setup 96 h water-only sediment 14 d determine leachate a dilution series. Chemical composition water qualitatively analyzed. All tested - including those claiming environmentally friendly consisted PVC contained plasticizers, highly concerning diethylhexyl-phthalate dibutyl-phthalate, other additives. Depending on type, even dilutions 1.5% toxic up 100% H. azteca after hour exposures, especially treatments without sediment. Strong chemical resulting ecotoxicological among different identified. results demonstrate that currently underestimated require better documentation, awareness regulation reduce angling.Graphical abstract

Language: Английский

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Limited Demographic Effects One Decade After Implementation of a Harvest‐Slot Length Limit for Walleye (Sander vitreus) in the St. Lawrence River, Québec, Canada

Fisheries Management and Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

ABSTRACT Although the role of recreational harvest on size structure declining fish populations is often unclear, bag and limits are implemented to prevent overharvest. Long‐term monitoring periodic assessments stock status then become necessary evaluate their potential impacts. Based a long‐term gillnet program in St. Lawrence River, Québec, Canada, effects 381–545 mm harvest‐slot length limit 2011 were evaluated walleye ( Sander vitreus ). Mixed‐effects models revealed continued declines abundance large walleyes, distribution, total annual mortality, female growth, condition, size‐at‐maturity. Expected impacts mostly not achieved, potentially because environmental trophic interaction changes addition increasing fishing pressure. Our results highlight need reassess current fisheries management strategies.

Language: Английский

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Drivers of Recreational Angler Satisfaction in Port Phillip Bay, Australia

Fisheries Management and Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

ABSTRACT As a widely enjoyed pursuit, recreational fishing plays key socio‐economic role in Australia by supporting coastal businesses, especially regional areas. Satisfaction is considered an end outcome of angling that important fisheries management contributing to ongoing participation and regulatory strategies. Port Phillip Bay (PPB) Victoria, Australia, hosts the State's largest marine fishery, yet angler satisfaction has not been previously explored. We evaluated influence age groups, regions (5 boat ramps Melbourne, 7 Bellarine, 8 Mornington), target species (snapper, King George whiting, calamari, flathead), catch rate on spatiotemporal patterns long‐term from creel surveys conducted around PPB during 2016–2022. Angler varied with per unit effort (CPUE) avidity. annually regionally, higher among younger anglers, Bellarine region along western coastline PPB. also species, anglers targeting calamari being generally more satisfied, although increased for snapper when interacted CPUE. Insights into behavior factors will ultimately provide basis formulating performance indicators monitor assess future satisfaction. More broadly, our study provides guidance about how interventions impact satisfaction, therefore making it likely needs concerns fishers are decision processes.

Language: Английский

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Comprehensive Biodiversity Assessment of Flora and Fauna Along the Kedah Coastline: Implications for Conservation and Sustainable Management

Results in Engineering, Journal Year: 2024, Volume and Issue: 24, P. 103120 - 103120

Published: Oct. 15, 2024

Language: Английский

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Interaction between coastal birds and recreational fisheries in Argentine: Incorporating the social dimension to improve effectiveness of conservation and management measures in a key estuarine reserve

Marine Policy, Journal Year: 2024, Volume and Issue: 167, P. 106278 - 106278

Published: June 27, 2024

Language: Английский

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Physiological responses to capture, handling and tagging in the critically endangered flapper skate (Dipturus intermedius)

Conservation Physiology, Journal Year: 2024, Volume and Issue: 12(1)

Published: Jan. 1, 2024

Abstract Catch-and-release angling is a popular recreational pastime and an essential component of many fish research programmes. Marked physiological disturbances have been documented in elasmobranchs response to handling, but skates rays remain understudied. Here, we describe for the first time responses critically endangered flapper skate (Dipturus intermedius) angling, handling tagging Scotland. Sixty-one were captured by as part programme. We assessed individual health, measured blood parameters at two points (post-capture prior release) recorded heart respiratory rates during surgical insertion acoustic tags. Injuries or infections identified 10% individuals attributed cases. Skate generally experienced mild metabolic acidosis characterized decreases pH bicarbonate increases lactate glucose. Respiratory limited PCO2 was also observed. The degree greater with warmer sea temperatures longer fight times, worsened that handled on deck. Heart negatively associated body size, positively temperature linked line. Taken together, our results suggest elevated times increase stress rod reel-caught skate. Efforts reduce minimize heat exposure (including shading, irrigation reduced time) should be beneficial

Language: Английский

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The Impact of COVID-19 on Participation, Effort, Physical Activity, and Well-Being of Sea Anglers in the UK

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: May 31, 2022

Recreational sea angling is an important recreational activity in the United Kingdom with around 1.6% of adults participating and a total economic impact £1.5 billion each year. There are positive impacts on physical health mental well-being. The COVID-19 pandemic resulted several national lockdowns UK, which along additional local restrictions personal circumstances due to pandemic, have impacted people’s ability fish. Angling was not allowed UK for some first lockdown (March May 2020), further were implemented subsequently that varied between countries regions. participation, effort, activity, well-being anglers remains unknown. A panel anglers, record their catches as part Sea Diary Project, surveyed assess changes well-being, expenditure 2019 2020. We compared effort diary found reduced panel, including sessions catches, 2020, largest being April there significant reduction during 2020 64% respondents spending less than typical April. In total, 67% reported happiness 45% active restrictions. Using general linear model, we even though said able go fishing has high World Health Organization Five Well-being Index scores, other factors also had effects. These included: age; status; activity; travel fish COVID-19; whether they fished July Of those who responded, 66% classified themselves at either or moderate risk COVID-19. This work shown negatively affected marine fisheries

Language: Английский

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