Marine Fisheries Production Research Articles

Species diversity and catch per unit effort (CPUE) of Portunidae in Batubara, North Sumatera, Indonesia

Abstract Crabs from the family of Portunidae are distributed widely in Indonesian waters, including the blue swimming crabs which has been exploited as a target species to meet the export demand and economic needs 3 of the capture fisheries sector. Crab catches from Portunidae family makes a major contribution to marine fisheries production in Batubara Regency, North Sumatra, Indonesia. The purpose of this study was to analyze the species diversity and catch per unit effort (CPUE) of crabs of Portunidae family in January–March 2023 in Tanjung Tiram Waters, Batu Bara Regency, North Sumatra, Indonesia. The fishing area was located right across the Malacca Strait, which is congested with international shipping traffic. Data were obtained through observations and community interview. Catch per unit effort (CPUE) of crabs was analyzed. The results showed about five species of crab from the Portunidae family were caught, including Portunus pelagicus, Scylla serrata, Charybdis feriata, Charybdis affinis, and Charybdis natator. The avearga CPUE value of target species Portunus pelagicus was 8,8 kg/trip.

Analysis of Fish Supplies at the Poumako Fishing Port, Mimika Regency, Central Papua Province - Indonesia

One of the feeder ports in Fisheries Management Area (FMA) 718 is the Poumako fishing port in Central Papua Province, which encompasses fishing grounds in the sea of Aru, Arafuru, and Eastern Timor. As a supply of fish for different consumer locations on the island of Java, the port is crucial to Indonesia's marine fisheries supply chain. Therefore, in fisheries management policies at FMA 718, it is necessary to predict fish catches as assessment materials. This research aims to analyze the availability of fish supplies at the Poumako Fishing Port. Secondary data from the Ministry of Maritime Affairs and Fisheries (MMAF) provided the production of fish that landed between January 2018 and October 2023 for analysis. In addition, secondary data from the Poumako Fishing Port and interviews with port management were used to reveal the dynamics of fish supply at the Fishing Port. Data was analyzed descriptively. Fish catch predictions were investigated by the Triple Exponential Smoothing method. The research results show that Poumako Fishing Port has significant roles in the local and national fish supply chains. The trend of fish catches landed at Poumako Fishing Port is parabolic. There is a trend of increasing production in 2018–2021 and decreasing production in 2022–2023. The catch fisheries production is predicted to decline in 2024. Therefore, it is necessary to improve port facilities and management to increase marine fisheries production at the Poumako Fishing Port in the future.

Modelling the anthropogenic Hg pollution fingerprint on the marine fishery production worldwide: A preliminary exposure assessment for people living in countries having different income levels

Mercury is a toxic pollutant that poses risks for the human population, mainly by eating contaminated fish. Mercury is released into the atmosphere from a variety of anthropogenic activities, with levels of emissions and under policy controls that largely vary across the world, leading thus to different relative contributions to the environmental matrices. Establishing the exact sources of this contaminant in the environment is crucial to optimising the policies aimed at mitigating the exposure risks for specific populations or ecosystems. In this study, we modelled, for the first time, the fingerprint of mercury anthropogenic emissions, jointly released by source-sectors (11) and source-regions (13), on the deposition over (19) FAO fishery zones, and on the FAO official fishery productions worldwide over the 2012–2021 decade. Using mercury anthropogenic emissions for 2012 from EDGAR, East Asia and ”Artisanal and Small scale Gold Mining” result the source-region and the source-sector, respectively, that contribute the most to the mercury deposition over all the FAO fishery zones. The only exception applies for the FAO fishery zone 37, the Mediterranean Sea, where the ”Industrial Combustion” from the closest Europe is the pair region-sector whose joint contribution is the greatest. When normalised to the overall fishery production worldwide, representing the global fish consumption, the anthropogenic mercury fingerprint showed a similar general pattern, however with notable differences, amplifying the relative contributions of all source-sectors from East Asia and attenuating the relative contributions of the regions in the Southern Hemisphere. This fingerprint further changes when the fish consumption in countries, classified by the World Bank as having different incomes, is considered. These results demonstrate that the same anthropogenic mercury deposited on any fishery zone actually affects in a different way the different population segments worldwide. This study aims to urge the science community as well as the policy makers to use a measure that better represents the mercury hazard for human health. Further, we hope that this study, using nomenclatures that are largely used on final shelf-product, could increase the people’s awareness regarding the products they consume.

The Potential of Indonesia's Ship Engine Market to Attract Foreign Investors for Domestic Manufacturing

Indonesia is a prospective country for everyone to decide on an investment. There are four reasons to strengthen the motivation to invest some capital in the maritime industry sector. Moreover, Indonesia has approximately 342 shipbuilding companies and 127 ship component companies which spread out throughout the nation. However, Indonesia has no engine maker company yet and this is an opportunity for all investors who want to establish their own engine company or a branch in this country. The biggest opportunity is in the fishery sector with a growing number of fishing vessels and the Indonesian marine fishery production potential as the largest archipelagic country is still increasing. Furthermore, other opportunities are passenger ships, cargo ships, and tug boats because they have a significant number in the nation. In addition, Indonesia also gives several incentives to new investors, like a tax allowance, a super tax deduction, and an import duty facility. Ultimately, the prospect has been considered to involve responsibilities among shipowners, shipyards, main engine manufacturers, and the government.

FISH APARTMENT AS AN EFFORT TO INCREASE PRODUCTIVITY AND CONSERVATION OF FISH RESOURCES (LITERATURE REVIEW)

The decline in global marine fisheries production has sparked concerns about depletion of fish resources. The innovation developed is the use of fish apartments to increase productivity and conserve fish resources. Fish apartment is useful as fishing media, replacement habitat for damaged coral reefs, nursery ground and feeding ground for fish habitat ecology. Fish apartment can also be an indicator of changes in trophic levels in the food chain in aquatic ecosystems. This research explores the benefits of fish apartment for increasing productivity and conserving fish resources. Descriptive and exploratory research methods were carried out by combining literature and published research results. The benefits of fish apartment as an effort to increase the productivity of fish resources can be seen from the existence of waters that have the potential to become fishing areas which contribute to increasing fish stocks so that catches increase by 80% per year from 2013-2015. The fish apartment can restore damaged aquatic ecosystems because it increases the abundance of 39 types of fish species and improves the fish habitat for the 20 families of coral fish that occupy the fish apartment.

Contribution and Prospect of Marine Fisheries in the Economy of Bangladesh and Sustainable Blue Economy Challenges: A Review

Marine resources of Bangladesh are abundant, both in terms of huge sea area and its biological richness. The marine water area supports a large number of commercially important fin fish, mollusks, crustaceans, and seaweeds, offering significant economic potential due to their diversified use and high demand in the international market. Therefore, the current review comprehensively examines both the contribution and potentials of marine fisheries resources to the economy, as well as the challenges involved in marine fisheries sectors in attaining a sustainable blue economy in Bangladesh. The study revealed that, the marine fisheries plays an important role in national economy and has huge prospect in employment generation and ensuring food security of Bangladesh. The expansion of mariculture and effective utilization of marine resources will open a new window for the economic development of Bangladesh. Marine fisheries production of Bangladesh has increased over the last two decades, but its relative share in total fisheries production has declined. Despite being rich in marine living resources, commercial mariculture has been developed only for shrimp, prawn, and mud crab. Challenges hindering mariculture expansion includes limited research, technological deficiencies, inadequate skilled workforce, underdeveloped domestic seafood markets, and financial constraints. Concerted efforts including exploring new fishing grounds, conducting stock assessments, implementing scientific management strategies, enacting a national marine fisheries policy, enforcing legislation, and establishing robust surveillance and monitoring mechanisms are required to foster a sustainable blue economy in Bangladesh.

Peluang investasi dan daya dukung lingkungan usaha penangkapan ikan di Kabupaten Majene Provinsi Sulawesi Barat

Background: Majene Regency, which is located in West Sulawesi Province, is part of the Republic of Indonesia State Fisheries Management Area (WPPNRI) 713. It has a coastline length of approximately 125 km2, a sea area of more than 13,124 km2, and a land area of around 947.84 km2. The potential fish resources are 1,026,599 million tonnes per year, mainly consisting of small pelagic fish, large pelagic fish, demersal fish, coral fish, penaeid shrimp, lobsters, crabs, and squid. Methods: This research uses scientific literature sources, government publications, policy documents, academic databases including scientific journals, and books to obtain a comprehensive and up-to-date view. Findings: Data shows that capture fisheries production in Majene Regency produces 7,458 tonnes of marine fisheries products. Conclusion: This increased from the previous year's 4.36 percent from 2017 to 2018. The largest marine fisheries production came from Banggae District, contributing 21.87 percent to Majene Regency's fisheries production. Aquaculture production originating from ponds decreased by 46.36 percent from 2017 to 2018. The amount of investment entering Western Province is still relatively low, namely being ranked 30th out of 34 provinces in Indonesia and in last position. out of 5 provinces in Sulawesi.

Observations reveal vertical transport induced by submesoscale front

Submesoscale fronts, with horizontal scale of 0.1–10 km, are key components of climate system by driving intense vertical transports of heat, salt and nutrients in the ocean. However, our knowledge on how large the vertical transport driven by one single submesoscale front can reach remains limited due to the lack of comprehensive field observations. Here, based on high-resolution in situ observations in the Kuroshio-Oyashio Extension region, we detect an exceptionally sharp submesoscale front. The oceanic temperature (salinity) changes sharply from 14 °C (34.55 psu) to 2 °C (32.7 psu) within 2 km across the front from south to north. Analysis reveals intense vertical velocities near the front reaching 170 m day−1, along with upward heat transport up to 1.4 × 10−2 °C m s−1 and salinity transport reaching 4 × 10−4 psu m s−1. The observed heat transport is much larger than the values reported in previous observations and is three times as that derived from current eddy-rich climate models, whereas the salinity transport enhances the nutrients concentration with prominent implications for marine ecosystem and fishery production. These observations highlight the vertical transport of submesoscale fronts and call for a proper representation of submesoscale processes in the next generation of climate models.

Evaluation of marine aquaculture sustainable in the Ekas Coastal Zone during the pandemic of Covid-19

The Covid-19 pandemic has generally impacted coastal activities, including mariculture development. A decrease or increase in aquaculture production will influence the aquatic environment and socio-economic of coastal communities. The aims of this study were (1) to analyze mariculture production in Ekas Bay during the Covid-19 pandemic and (2) to evaluate the coastal management based on the coastal community perspective. The study analysis uses both of analysis of comparative and analysis of descriptive. The results showed that the number of floating marine cages and fishery production had increased by more than 500% during the pandemic compared to before the pandemic. From the results of the dept-interview with coastal communities and fisheries extension officers, one of the drivers for increasing the amount of marine production, especially lobster commodity, is the implementation of government policies related to lobster management. Coastal management implementation has a good category with 65,03% of response assessment. The study also evaluated household waste management, resulting in a poor category with 56.65% of respondents’ assessment. Household waste needs managed properly to minimize the risk of environmental degradation and decrease marine resources in Ekas Bay.

Impact Analysis of Climate Change on Marine Fisheries Productivity in Indonesian Waters in 2023: A Review of Resource Availability and Adaptation Strategies

This research aims to assess the impact of climate change on the productivity of marine fisheries in Indonesian waters during the year 2023. The study focuses on evaluating the availability of marine resources and exploring adaptation strategies in response to changing environmental conditions. Through a comprehensive analysis, the research seeks to provide insights into the challenges faced by the fisheries sector and propose sustainable measures to ensure the resilience of Indonesia's marine ecosystems.

Pemberdayaan Masyarakat dalam Pembuatan Nugget Ikan Sebagai Diversifikasi Olahan Ikan untuk Meningkatkan Pendapatan Mitra

Salubomba Village, Donggala Regency is a coastal village whose residents are mostly fishermen and farmers. Fish caught by fishermen are still sold in raw form. The training activity aims to train the Salubomba Village community who are members of partner groups to process fish so that it has relatively high economic added value. In addition, encouraging the partner group to start and own a fish nugget business. The implementation method starts from the discussion stage and preparation of training between the team and partner groups. The service was then continued with technical training in the form of fish nugget processing demonstrations and non-technical training in the form of presenting material on product marketing strategies through online media, recording cash bookkeeping and institutional strengthening. The results of the activities assessed have increased the knowledge of partner groups regarding good fish nugget processing. In addition, the partner group also offered to develop the potential of marine fishery products in Salubomba Village. This can be seen from the enthusiasm of the partner groups in participating in all service activities. Post-training assistance is also carried out, especially in relation to business bookkeeping and the process of obtaining product distribution permits or P-IRT.
 Keywords: community service, processed fish, fish nuggets, salubomba village

Pengaruh fase bulan terhadap produktivitas hasil tangkapan bagan apung di perairan teluk Mutiara Kabupaten Alor

Bagan Apung fishing gear is one of the fishing gear that uses light as a tool in the fishing process. Floating Bagan fishing gear is a fishing gear that produces a high enough value for fishery production. The value of marine fishery production sometimes experiences instability which can be caused by several factors including oceanographic, weather or climate factors and the period of the moon phase. The research method used in this study was observation or following the fishing operation directly on Bagan Apung as many as 16 trips. Data analysis was carried out to see the effect of the catch on the moon phase using the t test and the BNT follow-up test. The composition of the catch shows that the crescent phase has a catch composition of 33% or with a total catch of 884 kg. The first bright spring moon phase with a catch composition of 17% or with a total catch of 454 kg, the full moon phase with a composition of 13% or with a total catch of 346 kg. The second semi-bright moon phase with a composition of 37% or with a total catch of 987 kg. The results of the t test and further test (BNT) showed that there was a moon phase on the catch of Bagan Apung.

SQNet: Simple and Fast Model for Ocean Front Identification

The ocean front has a non-negligible role in global ocean–atmosphere interactions, marine fishery production, and the marine military. Hence, obtaining the positions of the ocean front is crucial in oceanic research. At present, the positioning method of recognizing an ocean front has achieved a breakthrough in the mean dice similarity coefficient (mDSC) of above 90%, but it is difficult to use to achieve rapid extraction in emergency scenarios, including marine fisheries and search and rescue. To reduce the its dependence on machines and apply it to more requirements, according to the characteristics of an ocean front, a multi-scale model SQNet (Simple and Quick Net) dedicated to ocean front position recognition is designed, and its perception domain is expanded while obtaining current scale data. In experiments along the coast of China and the waters of the Gulf of Mexico, it was not difficult to find that SQNet exceedingly reduced running time while ensuring high-precision results (mDSC of higher than 90%). Then, after conducting intra-model self-comparison, it was determined that expanding the perceptual domain and changing the weight ratio of the loss function could improve the accuracy and operational efficiency of the model, which could be better applied in ocean front recognition.

Berthing Capacity Evaluation of Fishing Port Prone to Typhoons: A Case Study of Shengsi Fishing Port

Typhoons and other extreme weather events frequently strike offshore fishing ports. Therefore, an objective and realistic assessment of the berthing capacity of fishing ports are critical to offshore production safety and the safe management of fishing ports to minimize typhoon effects. We integrated the MIKE 21 spectral wave (SW) and Holland wind models to recreate typhoon wave characteristics during the transit of Typhoon In-Fa and further analyzed the berthing capacity of the Shengsi fishing port (SFP) under different recurrence periods and route impacts. We planned the mooring area realistically and upgraded the marine fisheries production safety and security system. The model’s major wave heights and water levels are consistent with the actual observations, and the d-trend model evaluation demonstrates that our model performs well. The berthing capacity of the SFP was accurately calculated based on the significant wave height and stable mooring conditions for fishing vessels. The effective berthing area within SFP reached 5.88 km2 during the typhoon transit, accounting for 89.3% of the harbor area. A total of 5,154 fishing vessels, comprising 492 large-sized fishing vessels, 2,334 medium-sized fishing vessels, and 1,328 small-sized fishing vessels, could be moored. The berthing capacity under the impact of typhoons with varying recurrence periods is boosted by 10% compared with that of a 100a typhoon. When under the influence of typhoons with distinct trajectories, the wider the sheltered area of SFP is due to the topography sheltering effect, the more southerly the typhoon path is. This article examines the impact of alternative typhoon routes and return periods on fishing port sheltering capacity. The MIKE 21 SW wave and the Holland typhoon models are adopted to simulate the wave characteristics of the waters surrounding the fishing ports during the occurrence of the typhoon to analyze the fishing ports’ berthing capability. This report can be a reference for disaster reduction and offshore fishing port berthing management.

Construction and influencing factors of an early warning system for marine ranching ecological security: Experience from China's coastal areas

Marine ranching has been widely considered as a new mode of marine fishery production. Marine ranching ecological security (MRES) is the basis and premise to ensure the sustainable utilization of marine ranching functions. In this study, an MRES early warning system was constructed based on comprehensive marine ranching ecological security index (CMRESI) and system dynamic model to reveal the main factors affecting the development of marine ranching and explore the changes in MRES under different future development scenarios in China's coastal areas from 2011 to 2035. The results showed that (1) the mean CMRESI of China was only 0.3265 and spatial heterogeneity was significant, showing a general security state; (2) coupling and coordination degree of MRES subsystems was high in Jiangsu, Fujian, Shandong, and Guangdong, and resources was a major constraint on the coordinated development of MRES in the study area (63.6%); (3) Under the ecological priority development scenario, the CMRESI will be the highest in 2035; however, 27% of MRES (in Jiangsu, Fujian, and Hainan) will continue to issue serious early warnings. This study could provide a reference for construction planning, management maintenance, and decision-making of marine ranching.

Comparative analysis of first and second stage data envelopment approaches: Performance of marine capture fisheries in the European Union

AbstractI explored harvest productivity and economic efficiency of marine fisheries across European Union member states using comparative first and second‐stage data envelopment analyses, linear programming, and econometric models, based on a panel data set of technical, social, and economic data between 2008 and 2020 when the first implications of the global Covid‐19 outbreak began in the European Union. During the period, harvest productivity increased for 52 percent of the 21 member states between 2008 and 2020, with an average economic efficiency of 0.76. The economic efficiency and harvest productivity of European Union member states' fisheries fluctuated, with noticeable declines throughout the study period. Gross domestic product per capita, population size, and aquaculture production were related to performance metrics. The results are aimed to guide European Union fisheries managers to better understand how improvements in harvest productivity and economically efficient performance are achieved without constant reliance on subsidization, over‐allocation, and overexploitation.

Analysis Of Potential Development of Fishery By-Product Processing Industry in Lingga Regency, Riau Islands Province

Background: Lingga Regency has a great potential for marine fishery products that about 96 % of its area is marine waters. However, it has not provided too much income for the region since this great potential has not been fully exploited. At least 1,728 tons of export quality of live and dead fish are sent to Singapore in a year. Unfortunately, the revenue of overall exported fish is received by Batam and Tanjung Pinang city, because it becomes the export access of Lingga fish products. One of the programs is the development of the Fishery Processing Industry to increase the added value of marine by-products by involving community participation
 Aim: The purpose of the study was to determine the potential for the development of a fishery by-product processing industry
 Method: Data collection techniques were observation, in-depth interviews and document review. The data analysis consists of the type and capacity of the industry, production time assumptions and utility. 
 Findings: The results showed that Lingga Regency has the potential to develop a fishery by-product industry, especially a fish flour industry with a capacity of 1 ton per day, with a production time of 5.6 days in a week and 51 weeks in a year. The raw materials used for the industry was a waste from fish fillet and minced fish processing industry with both of yield were 35 %. The initial production capacity of this industry was set at 66% and will increase annually with a maximum used capacity of 89%.

Analysis Of Potential Development of Fishery By-Product Processing Industry in Lingga Regency, Riau Islands Province

Background: Lingga Regency has a great potential for marine fishery products that about 96 % of its area is marine waters. However, it has not provided too much income for the region since this great potential has not been fully exploited. At least 1,728 tons of export quality of live and dead fish are sent to Singapore in a year. Unfortunately, the revenue of overall exported fish is received by Batam and Tanjung Pinang city, because it becomes the export access of Lingga fish products. One of the programs is the development of the Fishery Processing Industry to increase the added value of marine by-products by involving community participation
 Aim: The purpose of the study was to determine the potential for the development of a fishery by-product processing industry
 Method: Data collection techniques were observation, in-depth interviews and document review. The data analysis consists of the type and capacity of the industry, production time assumptions and utility. 
 Findings: The results showed that Lingga Regency has the potential to develop a fishery by-product industry, especially a fish flour industry with a capacity of 1 ton per day, with a production time of 5.6 days in a week and 51 weeks in a year. The raw materials used for the industry was a waste from fish fillet and minced fish processing industry with both of yield were 35 %. The initial production capacity of this industry was set at 66% and will increase annually with a maximum used capacity of 89%.

Harvest control rules used in US federal fisheries management and implications for climate resilience

AbstractClimate change is altering the productivity of marine fisheries and challenging the effectiveness of historical fisheries management. Harvest control rules, which describe the process for determining catch limits in fisheries, represent one pathway for promoting climate resilience. In the USA, flexibility in how regional management councils specify harvest control rules has spawned diverse approaches for reducing catch limits to precautionarily buffer against scientific and management uncertainty, some of which may be more or less resilient to climate change. Here, we synthesize the control rules used to manage all 507 US federally managed fish stocks and stock complexes. We classified these rules into seven typologies: (1) catch‐based; (2) constant catch; (3) constant escapement; (4) constant F; (5) stepped F; (6) ramped F and (7) both stepped and ramped F. We also recorded whether the control rules included a biomass limit (‘cut‐off’) value or were environmentally linked as well as the type and size of the buffers used to protect against scientific and/or management uncertainty. Finally, we review the advantages and disadvantages of each typology for managing fisheries under climate change and provide seven recommendations for updating harvest control rules to improve the resilience of US federally managed fisheries to climate change.

Pelatihan Dan Belajar Pengolahan Bandeng Cabut Duri Untuk Ibu PKK Dasa Wisma Matahari Di Dusun Gayam, Desa Soko, Kecamatan Glagah. Kabupaten. Lamongan

Lamongan is known as a producer of various fishery commodities, both marine fishery and freshwater fishery products. This is directly proportional to the large number of fish farmers scattered in several areas of Lamongan. In Gglagah sub-district itself there are several groups of farmers where the main commodities are fresh vanamei shrimp and milkfish. The problem arose from April to July where there was a big harvest in several areas in East Java, especially Lamongan Regency, so that some fishery commodities such as milkfish, especially in Glagah District, Lamongan Regency experienced a significant decline in prices. One of the efforts to utilize the fish so that it has a high selling value is by processing milkfish into semi-finished products, namely batari (milkfish pull out thorns). The price of unplugged milkfish has a very economical price, in traditional markets with small sizes it can reach Rp. 10,000/head with a net weight of 130-180 grams, while large sizes with a net weight of 330-380 grams can reach a price of Rp. 20,000/head. Planned Location for the implementation of internal community service at the University of Muhammadiyah Gresik is in Guayam Hamlet, Soko Village, Glagah District, Lamongan Regency, a village where the majority of the population are pond farmers, approximately 75% of pond farmers and 25% are factory workers. The purpose of implementing the internal community service activities at the University of Muhammadiyah Gresik is to first open up business opportunities and job opportunities. The second is to cultivate an entrepreneurial spirit in the community and the third is to produce processed products of Milkfish Cabut Duri. The methods used are lecture and discussion methods, knowledge transfer and demonstration methods. Through guidance in UMG's internal community service program, it is hoped that PKK can utilize all parts of milkfish whose selling price is low from April to July into processed products with high economic value. so that farmers and villagers will benefit