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نتیجه جستجو - ماهیگیری

تعداد مقالات یافته شده: 41
ردیف عنوان نوع
1 The use of fishers’ knowledge to assess benthic resource abundance across management regimes in Chilean artisanal fisheries
استفاده از دانش ماهیگیران برای ارزیابی فراوانی منابع بنیادی در رژیم های مدیریت در شیلات صنایع شیلی-2021
Globally, marine fisheries remain largely unassessed, particularly small-scale fisheries in developing countries. Fishers’ knowledge has proven to be valuable to help fill gaps of information in otherwise unassessed fisheries. This study tested the reliability of fishers’ knowledge to estimate the abundance of two benthic resources, locos (Concholepas concholepas) and keyhole limpets (Fissurella spp.), across two management regimes, territorial user rights for fisheries (TURF) and open access areas (OAA), over ~500 km of coastline in central Chile. Fishers’ knowledge (FK) was quantified using systematic interviews and compared to direct assessments (DA). Addi- tionally, resource abundance was compared between the fishing regimes, considering regions with different concentration of TURFs (and consequently different availability of OAAs). The results show that abundances estimated by the two methods were highly consistent for the most valuable resource (the loco) and quite reliable for the keyhole limpet (for 67% of the comparisons). Abundances of both resources were higher in TURFs than in OAAs, a pattern detected by both FK and DA. The results clearly show the potential of this approach to be applied for the Chilean benthic fisheries over large scales. Interestingly, the results also show significantly lower abundance of locos in OAAs than in TURFs at coves immersed in zones with low availability of open access fishing grounds, suggesting the influence of effort displacement after the implementation of TURFs. This ancillary result highlights the need for seascape management plans that consider the potential, unintended ef- fects of TURFs on resources beyond their boundaries. These findings are of both local and global interest, sup- porting the use of FK to inform management in unassessed small-scale fisheries.
keywords: ادراک فیشر | گرفتن هر واحد تلاش | حقوق کاربر ارضی | جابجایی تلاش | ماهیگیری در مقیاس کوچک | خرگوش | Fishers’ perception | Catch per unit of effort | Territorial user rights | Effort displacement | Small-scale fisheries | Shellfish
مقاله انگلیسی
2 Lessons learned for collaborative approaches to management when faced with diverse stakeholder groups in a rebuilding fishery
درس‌های آموخته‌شده برای رویکردهای مشارکتی در مدیریت هنگام مواجهه با گروه‌های ذینفع مختلف در یک شیلات در حال بازسازی-2021
There is increasing demand within fisheries management for the adoption of management approaches that incorporate in-depth stakeholder participation, scientific uncertainty, multiple objectives, and characterizations of risk. One such approach—management strategy evaluation (MSE)—relies on participation with fishery in- terest groups to consolidate knowledge of the fishery system, define goals, and evaluate feasible management options. However, the focus of much of the literature on MSE emphasizes steps in implementation and its practical application, despite the fact that technical aspects of MSE have the potential to alienate participants without MSE experience. Using the Units 1 and 2 Canadian Atlantic redfish fishery as a case study, we here describe lessons learned from the MSE developed for this rebuilding fishery, focusing on four key challenges: identifying participants for MSE processes; clearly defining their roles; educating participants on the purpose, benefits, and scope of MSE; and mediating disagreements to acquire critical cooperation, inputs, and feedback from the different stakeholder groups within the MSE process.
keywords: ماهی قرمز آتلانتیک | مدیریت همکاری | مشارکت ذینفع | مدل سازی مشارکتی | تصمیم گیری | ارزیابی استراتژی مدیریت | Atlantic redfish | Collaborative management | Stakeholder engagement | Participatory modelling | Decision-making | Management strategy evaluation
مقاله انگلیسی
3 Gathering local ecological knowledge to augment scientific and management understanding of a living coastal resource: The case of Oregon’s nearshore groundfish trawl fishery
جمع آوری دانش زیست محیطی محلی برای تقویت درک علمی و مدیریت از یک منبع ساحلی زنده: مورد ماهیگیری ماهی قرمز مایل به قرمز اورگان-2021
Globally, coastal nearshore regions are an intersecting point for human and biological productivity, often serving as hotspots for subsistence, commercial, and recreational fishing activities. Despite this, many nearshore areas remain poorly understood, monitored or managed. This case study examined the nearshore sector of Oregon’s groundfish trawl fishery, which exists in shallow estuarine and continental shelf habitats common along the West Coast of North America; areas that are important for early life history stages of many commercial and recrea- tional fisheries. The West Coast groundfish fishery includes over 90 different species, 40 of which occur within Oregon’s nearshore (here defined as the portion of the shelf extending seaward to a water depth of 200 m). The very shallow portions of the Oregon Coast (the area of the shelf inshore of 55 m) have been subject to limited scientific survey monitoring, and much of the details of the ecology, health, and processes in these habitats remain poorly understood. The utilization of the nearshore region by the commercial groundfish trawl fleet is also minimally documented despite the fact that experiential knowledge (local ecological knowledge [LEK]; trawl logbooks, fish tickets, interviews) exists. This research explored the capacity of capturing LEK sources to inform and enhance understanding of the drivers of effort and the vitality of nearshore fishery resources. Our approach used statistical analysis and mapping of nearshore trawl effort from 1981 to 2017 and gathered semi- structured interviews of intergenerational fishermen to bolster data-poor areas. Insights provided by sampling strategies and historical to current knowledge of access to groundfish assemblages provide informed baselines for future management. Spatial mapping results revealed a decline in trawl effort on the Oregon continental shelf thought time. Logbook and interview data assessment illuminated market and ecological drivers of fishing behavior as well as a unique sector of the groundfish fleet in Oregon: the beach fleet, with unique market and socio-economic challenges. Findings indicate a mixed-methods approach can provide a more thorough assess- ment of long-term interest in Oregon’s nearshore groundfish fishery. Ensuring better understanding of coastal interfacing regions such as Oregon’s nearshore insights potential for better conservation and utilization of marine resources and improved monitoring in resource limited management contexts.
keywords: دانش زیست محیطی محلی | زمین های دریایی ساحل غربی ایالات متحده | اطلاعات وابسته به ماهیگیری | ماهیگیری ساحلی | Local ecological knowledge | US West Coast groundfishes | Fisheries-dependent data | Coastal fisheries
مقاله انگلیسی
4 Accounting for price responses in economic evaluation of climate impacts for a fishery
حسابداری برای پاسخ های قیمت در ارزیابی اقتصادی تاثیرات اقلیمی برای ماهیگیری-2021
The present study evaluates the economic impacts of fluctuations in anchovy (Engraulis spp.) catch in Gyeong- Nam (GN) province, South Korea, arising due to warming seawater, accounting for the effects of the re- sponses of the anchovy price. It combines an inter-regional input-output (IRIO) model of two regions (i.e., GN province and all other provinces combined) with a simultaneous equation system (SES) of anchovy supply and demand functions estimated to make projections of the price and quantity of anchovies based on two greenhouse gas (GHG) concentration scenarios (i.e., representative concentration pathway (RCP) 4.5 and 8.5). Results indicate that estimates of the economic impacts for the two regions will be biased if we consider only the quantity (harvest) change when computing the economic impacts without accounting for the effects of the price re- sponses. None of the previous IO-based economic impact analyses of fisheries account for the price effects induced by a quantity shock. This study fills this critical void by considering such effects.
keywords: تغییرات اقلیمی | ماهیگیری | کره جنوبی | پاسخ قیمت | مدل ورودی-خروجی بین منطقه ای | Climate change | Anchovy fishery | South Korea | Price response | Inter-regional input-output model
مقاله انگلیسی
5 Going on and off the map: Lessons from Swedish fisher knowledge about spawning areas in the Baltic Sea
رفتن به داخل و خارج از نقشه: درسی از دانش فیشر سوئد در مورد مناطق تخم ریزی در دریای بالتیک-2021
Scholars frequently promote fishers’ rich understanding of marine environments as a legitimate and unique form of knowledge that must be accounted for in fisheries management. It is, however, challenging to combine fisher knowledge (FK) with the conventional scientific knowledge that fisheries management relies upon. In this paper we investigate the (in)commensurability between FK and scientific objectives and procedures. Towards this aim we performed interviews with a group of fishers who participated in an earlier Swedish study in which FK was used to map locations of fish spawning areas along the Swedish Baltic coast. By interviewing these fishers again we were able to identify and assess aspects of FK that were left implicit in the earlier study. Based on our results we discuss the value of these aspects of FK for understanding marine environments.
keywords: دانش زیست محیطی محلی | روش های کیفی | ماهیگیری در مقیاس کوچک | دانش زیست محیطی سنتی | Local ecological knowledge | Qualitative methods | Small-scale fisheries | Traditional ecological knowledge
مقاله انگلیسی
6 Understanding variations in socio-economic vulnerabilities and the strategies adopted by small scale fishing communities of tropical reservoirs
درک تغییرات در آسیب پذیری های اقتصادی و اجتماعی و استراتژی های اتخاذ شده توسط جوامع ماهیگیری در مقیاس کوچک مخازن گرمسیری-2020
The present study taken up in two reservoirs in India namely Peechi and Pothundi reservoir assess the vulnerabilities and various management aspects adopted in two reservoirs. Peechi reservoir situated in Peechi- Vazhani wildlife sanctuary was prevented from all fishery enhancement programmes. Pothundi reservoir, a manmade tropical lake though encompassed in Western Ghats biosphere was regularly stocked with Indian Major Carps. Livelihood survey was carried out on the fishers of Peechi and Pothundi reservoirs with the help of a structured schedule. The survey encompassed demographic information, particulars on fisheries and details on economic and marketing aspects of respective reservoir fisheries. The marketing part of the schedule dealt with ranking of various problems faced by the fishermen in the reservoirs using Garrette ranking. Out of the various socio-ecological vulnerabilities of reservoir fisheries communities that was analysed in this study, varied stakeholder interest, human and wild life interference and irregular stocking of fish were identified as the major vulnerabilities faced by them. Relevance of various strategies suggested by fishers in Peechi and Pothundi reservoirs estimated using RFMI (Reservoir fisheries management index) concluded that regular and continuous fish stocking (technical driver) along with allowing gender equity in land based fish production centres (social driver) was suggested as the appropriate strategy to augment the fishers income from Pothundi reservoir. The study suggested for a possible intervention by practicing fishing holidays in Peechi reservoir during lean months and substituting the lost income with alternative livelihood programmes. The RFMI values for Peechi and Pothundi reservoirs were 52.12 and 68.57 respectively. The study thus emphasized a bottom approach where in the importance of planning at primary stake holders level is ensured. The relevant research ensured adoption of these strategies in local scale along with policy window would definitely provide a better management of reservoir fisheries in tropical countries.
Keywords: Reservoir fisheries management index | Garette method | Policy driver | Vocation
مقاله انگلیسی
7 Valuable but vulnerable: Over-fishing and under-management continue to threaten groupers so what now?
ارزشمند اما آسیب پذیر: ماهیگیری بیش از حد و کم مدیریتی همچنان تهدیدی برای هم گروه ها انجام می دهد ، حالا چه می شود؟-2020
Among threats to marine species, overfishing has often been highlighted as a major contributor to population declines and yet fishing effort has increased globally over the past decade. This paper discusses the decadal reassessment of groupers (family Epinephelidae), an important and valuable group of marine fishes subjected to high market demand and intense fishing effort, based on IUCN criteria. Allowing for uncertainty in the status of species listed as Data Deficient, 19 species (11.4%) are currently assigned to a “threatened” category. This first reassessment for a large marine fish taxon permits an evaluation of changes following the original assessments, provides a profile of the current conservation condition of species, identifies the challenges of assessing conservation status, and highlights current and emerging threats. Measures needed to reduce threats and lessons learned from conservation efforts are highlighted. Present threats include intensifying fishing effort in the face of absent or insufficient fishery management or monitoring, growing pressures from international trade, and an inadequate coverage in effectively managed, sized, or located protected areas. Emerging threats involve expansion of fishing effort into deeper waters and more remote locations, shifts to previously non-targeted species, increases in the capture, marketing and use of juveniles, growing demands for domestic and international trade, and, potentially, climate change. Those species most threatened are larger-bodied, longer-lived groupers, most of which reproduce in spawning aggregations
Keywords: Epinephelidae | Extinction risk | IUCN | Overfishing | Sustainability
مقاله انگلیسی
8 How do fishery resources enhance the development of coastal fishing communities: Lessons learned from a community-based sea farming project in Taiwan
چگونه منابع شیلات توسعه جوامع ماهیگیری ساحلی را تقویت می کنند: دروس آموخته شده از یک پروژه کشاورزی دریایی مبتنی بر جامعه در تایوان-2020
Taiwan government proposes a national level Coastal Blue Economy Growth (CBEG) program to promote oceanlinked industries based on the concept of sustainable development. Sea farming development is considered an important aspect that needs to be promoted for the CBEG program. Generally, sea farming relies on artificial technologies, environmental improvement and resource management to increase fishery resources and to enhance fisheries productivity. Developing sea farming could contribute to the transformation of capture fisheries; it integrates the concept of Blue Economy into sustainable economic development so as to improve economic activities in fishing communities. In line with this, the Taiwan government launched the Community- Based Sea Farming (CBSF) project in 2015. The CBSF project aims to establish sea farming zones to help fishing communities achieve sustainable development. In this paper, the development process of sea farming and site selection of the CBSF project were described and the needs of local people in fishing communities around seafarming demonstration zones were also assessed. According to findings, a framework for sea farming development is proposed. In this framework, several new sea farming-based industries can serve as the driving force to accelerate the development of fishing communities. The driving forces include developing a community-based tourism recreational industry, strengthening localized marketing of featured seafood products, combining local ecological landscapes and cultures of the fishing village to develop recreational fishery activities, and integrating seafood products with recreational tourism activities. Overall, CBSF are important tasks that warrant continuous attention for enhancing the fishing community development. The experiences and framework of promoting the Taiwan CBSF project would provide beneficial information and foundation for decision makers and natural resources managers in other areas.
Keywords: Coastal blue economy growth program | Sea farming | Community-based sea farming project | Fishing communities | Co-management | Marine stock enhancement
مقاله انگلیسی
9 How do fishery resources enhance the development of coastal fishing communities: Lessons learned from a community-based sea farming project in Taiwan
منابع شیلات چگونه توسعه جوامع ماهیگیری ساحلی را تقویت می کنند: درسهایی اموخته شده از یک پروژه کشاورزی دریایی مبتنی بر جامعه در تایوان-2020
Taiwan government proposes a national level Coastal Blue Economy Growth (CBEG) program to promote oceanlinked industries based on the concept of sustainable development. Sea farming development is considered an important aspect that needs to be promoted for the CBEG program. Generally, sea farming relies on artificial technologies, environmental improvement and resource management to increase fishery resources and to enhance fisheries productivity. Developing sea farming could contribute to the transformation of capture fisheries; it integrates the concept of Blue Economy into sustainable economic development so as to improve economic activities in fishing communities. In line with this, the Taiwan government launched the Community- Based Sea Farming (CBSF) project in 2015. The CBSF project aims to establish sea farming zones to help fishing communities achieve sustainable development. In this paper, the development process of sea farming and site selection of the CBSF project were described and the needs of local people in fishing communities around seafarming demonstration zones were also assessed. According to findings, a framework for sea farming development is proposed. In this framework, several new sea farming-based industries can serve as the driving force to accelerate the development of fishing communities. The driving forces include developing a community-based tourism recreational industry, strengthening localized marketing of featured seafood products, combining local ecological landscapes and cultures of the fishing village to develop recreational fishery activities, and integrating seafood products with recreational tourism activities. Overall, CBSF are important tasks that warrant continuous attention for enhancing the fishing community development. The experiences and framework of promoting the Taiwan CBSF project would provide beneficial information and foundation for decision makers and natural resources managers in other areas.
Keywords: Coastal blue economy growth program | Sea farming | Community-based sea farming project | Fishing communities | Co-management | Marine stock enhancement
مقاله انگلیسی
10 An integrated methodology for assessing ecological and economic impacts for marine management: A case study for abrasion and mobile fishing gear effects
یک روش یکپارچه برای ارزیابی تأثیرات زیست محیطی و اقتصادی برای مدیریت دریایی: یک مطالعه موردی برای سایش و اثرات چرخ دنده ماهیگیری سیار-2020
Ensuring a balance of conservation and human activities within the marine environment requires complex decisions on how to achieve conservation objectives whilst considering the likely economic and social costs and benefits of such decisions. We assessed the risk of adverse effects from abrasion caused by bottom fishing, as a case study, to demonstrate an integrated spatial management methodology. Risk was quantified in the Galway Bay, Ireland region using a 1 km grid, as the ratio between mortality and recovery of benthic infauna exposed to abrasion effects estimated from fishing data. Risk was considered high if annual mortality exceeded recovery. A Bayesian network model, incorporating ecological and economic data, compared three management scenarios: i) business as usual (BAU), ii) exclusion of fishing vessels over 18 m within 6 nautical miles (68% of study area) (Length) and iii) a network of marine protected areas (MPAs) closed to all fishing vessels (11% of study area) (MPA). The BAU scenario indicated that risk was high for 85.6% of the study area. The length scenario resulted in a 14.6% reduction in high risk cells, affecting €0.9 M of landings, €0.7 M of indirect output and 19 full time equivalent (FTE) employees. The MPA scenario resulted in a 1.7% reduction of high risk cells. This scenario affected €0.17M in landings, €0.13M in indirect outputs and 3 FTE employees. We present a method which provides a quantitative, spatial, risk and economic impact assessment of the effects of human activities and pressures on the marine environment that assesses potential costs and benefits of management options to mitigate against these pressures. Future development of a mortality-recovery ratio for defined time periods would enable application across multiple habitats, human activities and pressures.
مقاله انگلیسی
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