Current Status of the Pole-and-Line Fishery in Eastern Part of Indonesia

Widodo, Agustinus Anung; Wudianto, Wudianto; Satria, Fayakun

doi:10.15578/ifrj.22.1.2016.43-52

Cited by 7 publications

(7 citation statements)

References 3 publications

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“…This fishery underwent a substantial reduction in anchored FAD loss rate, from 82 to 20%, by improving designs and a government incentive program that pays fishers to retrieve FADs when they break from their moorings 35 , 43 . For comparison, describing Indonesia’s pole-and-line fishery’s anchored FADs, Widodo et al 44 stated: “Inaccuracy of number and position of FADs in the fishing ground are the outstanding issue facing by fisheries manager…This was largely the result of the current lack of effective systems of FAD registration and monitoring, and also because of the desire of fishing companies and vessel skippers to keep FADs position information confidential. [sic]”.…”

Section: Discussionmentioning

confidence: 99%

“…Networks of anchored FADs (called rumpons in Indonesia, payaos in the Philippines), are also used by some tuna purse seine fisheries, primarily in nearshore waters in the western Pacific Ocean 27 , 64 , 65 . A majority of the catch from pole-and-line fisheries comes from fisheries where some of the fishing effort occurs on anchored FADs 35 , 44 – 48 , 66 ,89 . Some tuna pole-and-line fisheries also fish on drifting FADs, likely deployed by tuna purse seine fisheries 44 , 47 , 66 , 67 .…”

Section: Methodsmentioning

confidence: 99%

“…A majority of the catch from pole-and-line fisheries comes from fisheries where some of the fishing effort occurs on anchored FADs 35 , 44 – 48 , 66 ,89 . Some tuna pole-and-line fisheries also fish on drifting FADs, likely deployed by tuna purse seine fisheries 44 , 47 , 66 , 67 . While FADs are also used by some handline, jig, troll and driftnet fisheries 44 – 46 , 64 , 68 , this study did not include FADs as part of the assessment of risks from ALDFG for these gear types as it is unclear what proportion of global effort by these gears occurs on FADs.…”

Section: Methodsmentioning

confidence: 99%

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Highest risk abandoned, lost and discarded fishing gear

Gilman

Musyl²,

Suuronen

et al. 2021

Sci Rep

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Derelict abandoned, lost and discarded fishing gear have profound adverse effects. We assessed gear-specific relative risks from derelict gear to rank-order fishing methods based on: derelict gear production rates, gear quantity indicators of catch weight and fishing grounds area, and adverse consequences from derelict gear. The latter accounted for ghost fishing, transfer of microplastics and toxins into food webs, spread of invasive alien species and harmful microalgae, habitat degradation, obstruction of navigation and in-use fishing gear, and coastal socioeconomic impacts. Globally, mitigating highest risk derelict gear from gillnet, tuna purse seine with fish aggregating devices, and bottom trawl fisheries achieves maximum conservation gains. Locally, adopting controls following a sequential mitigation hierarchy and implementing effective monitoring, surveillance and enforcement systems are needed to curb derelict gear from these most problematic fisheries. Primary and synthesis research are priorities to improve future risk assessments, produce the first robust estimate of global derelict gear quantity, and assess the performance of initiatives to manage derelict gear. Findings from this first quantitative estimate of gear-specific relative risks from derelict gear guide the allocation of resources to achieve the largest improvements from mitigating adverse effects of derelict gear from the world’s 4.6 million fishing vessels.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Highest risk abandoned, lost and discarded fishing gear

Gilman

Musyl²,

Suuronen

et al. 2021

Sci Rep

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“…Three buoy types of aFADs are commonly used in the IAW: steel pontoon, polystyrene block/cylindrical, and bamboo raft [5,[16][17], as depicted in Figure 3. The dimensions of these buoy types vary.…”

Section: Anchored Fadsmentioning

confidence: 99%

Estimation of number and position of fish aggregating devices in Indonesia Archipelagic Waters

Widodo,

Wudianto,

Satria

et al. 2023

E3S Web Conf.

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The research conducted in 2021 aimed to address the limitation on the use of Fish Aggregating Devices (FADs) as one of the management measures in the tuna harvest strategy in Indonesia Archipelagic Waters (IAW), specifically in Indonesia FMA 713, 714, and 715. The lack of data on the number and position of FADs posed challenges for effective management. The research utilized Sentinel-1 satellite image data from July and August 2020 to overcome this issue. These images were analyzed using the Constant False Alarm Rate algorithm and a geospatial approach. The research focused on water areas greater than 12 nautical miles from the coastline of IAW. The results estimated the number of FADs in Indonesia FMA 713, 714, and 715 to be 661, 608, and 291 units. The distance between FADs was generally less than ten nautical miles. These findings provide valuable information for managing and implementing FADs in the designated areas. However, it is important to note that the estimates are based on data from 2020, and the actual number and position of FADs may have changed. The research highlights the need for continued monitoring and registration of FADs to ensure accurate and up-to-date information for effective management measures.

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“…The most promising mitigation measures are the use of “non‐entangling” designs of DFADs which drastically reduce sea turtle and shark entanglement (Moreno et al, 2018), and their deployment, in limited numbers, is proposed in the section, “FAD design and Management” (Gilman et al, 2018). Anchored FADs are also used by tuna purse seine fisheries, and a majority of the catch by tuna pole‐and‐line fisheries also comes from fishing on anchored and DFADs (Adam et al, 2019; Defaux et al, 2018; ISSF, 2020; ISSF & IPNLF, 2019; Sibisopere, 2000; Thai‐Union, 2017; Widodo et al, 2016). Underwater observations of pelagic fish swimming behaviours in purse seines during net hauling and pursing phases by divers highlighted the clear segregation between tuna and non‐target species in the Western Pacific.…”

Section: Behavioural Observations and Development Of Mitigation Measuresmentioning

confidence: 99%

New technologies to improve bycatch mitigation in industrial tuna fisheries

Poisson

Budan²,

Coudray

et al. 2021

Fish and Fisheries

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For many years, tremendous effort has been dedicated to developing new industrial tuna fisheries, while their adverse impacts on threatened marine species have received relatively little attention. In tuna fisheries, bycatch is the major anthropogenic threat to marine megafauna in general, particularly sharks. Research on the development of gear technology for bycatch reduction and potential mitigation measures helped tuna Regional Fisheries Management Organizations adopt bycatch reduction management measures. After reviewing past research on the development of mitigation measures for pelagic longline and tropical purse seine fisheries based on pelagic species' behaviours, we describe promising new approaches integrating recent technological breakthroughs. New innovations include autonomous underwater vehicles carrying cameras along with miniaturized sensors, aerial drones, computer simulation of fishing gear geometry, environmental DNA assays, computer visualizations and deep learning. The successful application of such tools and methods promises to improve our understanding of factors that influence capture, escape and stress of caught species. Moreover, results emerging from recent ethological research explaining the power of social connection and learning in the “fish world” such as social learning from congeners, habituation to deterrents, and how past fishery interactions affect responses to fishing gear should be taken into account when developing technical mitigation measures.

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Current Status of the Pole-and-Line Fishery in Eastern Part of Indonesia

Cited by 7 publications

References 3 publications

Highest risk abandoned, lost and discarded fishing gear

Highest risk abandoned, lost and discarded fishing gear

Estimation of number and position of fish aggregating devices in Indonesia Archipelagic Waters

New technologies to improve bycatch mitigation in industrial tuna fisheries

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