Impacts of recreational angling on fish population recovery after a commercial fishing ban

Dainys, Justas; Jakubavičiūtė, Eglė; Gorfine, Harry; Kirka, Mindaugas; Raklevičiūtė, Alina; Morkvėnas, Augustas; Pūtys, Žilvinas; Ložys, Linas; Audzijonytė, Asta

doi:10.1101/2022.03.07.483248

Cited by 3 publications

(1 citation statement)

References 45 publications

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“…In contrast to many Western countries, catch and release in Poland is rare and most of the catch is consumed. Even coarse fishes, like roach or bream, rarely caught by anglers in European countries (Winfild, 2016;Dainys et al, 2022), are highly desirable (Kaczkowski & Grabowska, 2016;. Recreational fishing is more selective than commercial fishing.…”

Section: Recreational Fisheriesmentioning

confidence: 99%

Inland fisheries management in Poland - current state and institutional conditions

Turkowski,

Kupren,

Kozłowski

2023

EiS

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The state, development directions, opportunities and ways to improve inland fisheries management in Poland are described and discussed. Most of the country's inland waters are public. For fishing purposes, they are divided into fisheries districts. With exceptions, users of the fishing districts are selected through competitions. The user is obliged to conduct rational fisheries management in accordance with a fisheries management plan. Attention is drawn to the overdeveloped national fisheries administration and the possibilities for improvement. The fish stocks in the fishing districts are exploited by both a small group of commercial fishermen and a large group of anglers. While the information covering the basic data on harvest, stocking and other treatments in commercial fisheries can be considered sufficient, the lack of information about the number and catches of anglers is the greatest obstacle to the implementation of rational fisheries management. The preparation of a universal and mandatory system for acquiring angling data should be a priority for the national water administration, representing the owner of public inland waters in Poland.

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Section: Recreational Fisheriesmentioning

confidence: 99%

Inland fisheries management in Poland - current state and institutional conditions

Turkowski,

Kupren,

Kozłowski

2023

EiS

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Status and future perspectives for pikeperch (Sander lucioperca) stocks in Europe

Jakubavičiūtė

Arula

Dainys

et al. 2022

Preprint

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Pikeperch (Sander lucioperca) is a European fresh and brackish water piscivorous fish, important as both a key predator and a valuable commercial and recreational fisheries species. There are concerns that some stocks are depleted due to overfishing and environmental changes. We review data collection and population assessments currently used for nine pikeperch stocks across six European countries and apply a unified assessment framework to evaluate population status and trends. For this we first standardised commercial, scientific, and recreational catch-per-unit-effort (CPUE) and catch time series and then applied Bayesian surplus production models. Our results showed that three stocks (including two in the Baltic Sea) were strongly depleted, with estimated biomasses considerably lower than the biomass at maximum sustainable yield (Bmsy). Other stocks were either close or higher than their estimated Bmsy. Looking at the trends, we find that four stocks (Lake Oulujarvi, Kvadofjarden, Lake Peipsi and Lipno) showed increasing biomass trends and two (Curonian Lagoon, Galtfjarden) had a strong decline in biomass. In most cases the stocks with clear signs of recovery were also those for which strong management strategies have been implemented. We find that, despite pikeperch being one of the most valuable inland fisheries, formalised stock assessments and regular surveys remain rare. Importantly, although most stocks are strongly targeted by recreational fishing, estimates of recreational catch are highly uncertain. We conclude that data limited stock assessment methods are useful for assessing fish population status and highlight an urgent need to improve pikeperch scientific monitoring and assessment of recreational catches.

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Can a Protected Area Help Improve Fish Populations under Heavy Recreation Fishing?

Moraes

Souza

Bartoň

et al. 2023

Water

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Freshwater protected areas are designated parts of the inland waters that restrict human activities. They were created as a mechanism to combat the decline of fauna and flora of the world. Some authors have questioned their actual effectiveness in terms of the purpose of protecting endangered fauna and flora. We conducted an experiment in Lipno reservoir in the Czech Republic to evaluate the impact of protection against angling pressure on the fish community. We selected data from two years of gill netting and analyzed the difference between areas of low anthropogenic impact (LAI) and those of high anthropogenic impact (HAI) in terms of abundance, biomass, standard length, and diversity indices. Three groups of fish were found to prefer protected areas with low anthropogenic pressure: 1. YOY (Young-of-the-year) perch (Perca fluviatilis), the dominant of the young-of-the-year fish community. 2. Pike (Esox lucius), wels catfish (Silurus glanis) and rudd (Scardinius erythrophthalmus), which were not found in HAI areas at all. 3. Larger individuals of pikeperch (Stizostedion lucioperca), which survived better in LAI areas. Some factors may affect LAI, such as illegal poaching or setting out food bait to attract the fish outside. Another factor that can be considered is the migration of fish, either to forage or to reproduce, since the LAI areas are open to the reservoir. The areas of LAI act as protective habitats for heavily exploited predatory fish species and increase fish diversity indexes. The example of the protected and low-impact areas of Lipno should be followed in other water bodies with high fishing pressure and anthropogenic impact.

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Impacts of recreational angling on fish population recovery after a commercial fishing ban

Cited by 3 publications

References 45 publications

Inland fisheries management in Poland - current state and institutional conditions

Inland fisheries management in Poland - current state and institutional conditions

Status and future perspectives for pikeperch (Sander lucioperca) stocks in Europe

Can a Protected Area Help Improve Fish Populations under Heavy Recreation Fishing?

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