scholarly journals DINAMIKA PERIKANAN KERAPU DI TAMAN NASIONAL KARIMUNJAWA (Grouper Fishery Dynamics in Karimunjawa National Park)

2016 ◽  
Vol 4 (2) ◽  
pp. 175
Author(s):  
Irfan Yulianto ◽  
Budy Wiryawan ◽  
Am Azbas Taurusman ◽  
Prihatin I. Wahyuningrum ◽  
Vita R. Kurniawati
Keyword(s):  
National Parks ◽  
National Park ◽  
Statistical Tests ◽  
Monsoon Season ◽  
Fishing Gear ◽  
Catch Per Unit Effort ◽  
The West ◽  
Unit Effort ◽  
Target Fish ◽  
Java Sea

<p>ABSTRACT<br />Karimunjawa National Park is one of the national parks that have the objective to maintain fish populations in the Java Sea, where one of them is grouper. Grouper is one of the target fish in the national park. The objective of this study is to assess the conditions and dynamics of the grouper fishery in Karimunjawa National Park. Fish landing surveys were conducted to collect the data. Fishing gear types, grouper species, and weight of each species were collected. Calculation of Catch per Unit Effort (CPUE) per month and two-way ANOVA statistical tests were used for data analysis. Results of this study indicated that catches of grouper using speargun was significantly higher than the catch using handline. There was a seasonal cycle of the grouper catch, where the value of the highest CPUE occurred in transitional season between the west and east monsoon season, from March to May.<br />Key words: CPUE, grouper fishery, Karimunjawa National Park</p><p>-------</p><p><br />ABSTRAK<br />Taman Nasional Karimunjawa merupakan salah satu taman nasional yang salah satu tujuannya untuk mempertahankan populasi ikan di Laut Jawa, dimana salah satunya adalah perikanan kerapu. Ikan kerapu merupakan salah satu target penangkapan di perairan Taman Nasional Karimunjawa. Tujuan penelitian ini adalah mengetahui kondisi dan dinamika perikanan kerapu di Taman Nasional Karimunjawa. Survei pendaratan ikan dilakukan untuk pengumpulan data. Data yang dikumpulkan dalam penelitian ini adalah alat tangkap yang digunakan untuk menangkap ikan kerapu, jenis hasil tangkapan, dan berat masing-masing jenis hasil tangkapan setiap trip. Perhitungan nilai Catch per Unit Effort (CPUE) setiap bulan dan uji statistik two ways ANOVA digunakan untuk analisis data. Hasil penelitian ini menunjukkan bahwa hasil tangkapan ikan kerapu dengan menggunakan speargun lebih tinggi dan berbeda nyata secara statistik dibandingkan hasil tangkapan dengan menggunakan pancing. Terdapat siklus musiman hasil tangkapan, dimana nilai CPUE tertinggi terjadi pada musim peralihan antara musim barat dan musim timur yakni dari bulan Maret hingga Mei.<br />Kata kunci: CPUE, perikanan kerapu, Taman Nasional Karimunjawa</p>

Predation by southern sea lions (Otaria flavescens) on artisanal fishing catches in Uruguay

2002 ◽  
Vol 53 (8) ◽  
pp. 1161 ◽  
Author(s):  
Diana Szteren ◽  
Enrique Páez
Keyword(s):  
Significant Relationship ◽  
Shallow Waters ◽  
Fishing Gear ◽  
Artisanal Fishery ◽  
Artisanal Fishing ◽  
Catch Per Unit Effort ◽  
Sea Lion ◽  
Otaria Flavescens ◽  
Sea Lions ◽  
Unit Effort

Southern sea lions (Otaria flavescens) forage in coastal fishery grounds in shallow waters, where they interact with coastal fishing activities. The main objective of this research was to evaluate the predation of southern sea lions on artisanal fishery catches and thus determine whether interactions with sea lions affected catches. Between July 1997 and March 1998, we observed 53 fishing events onboard artisanal fishing boats in four localities. The presence and number of sea lions around the boat and the numbers of each fish species consumed by sea lions were recorded by an onboard observer. To estimate the damage caused by sea lions to fishery catches, we considered two scenarios, a conservative scenario and a maximized scenario. Predation on catches was observed in 50.9% of all the fishing events and up to four sea lions were sighted in 67.9% of fishing events. Considering a conservative scenario, predation varied from 0.8 to 9.1% of the catch per unit effort (CPUE) depending on the location. Considering the maximized scenario, predation varied from 3.4 to 46.2%. However, no significant relationship was found between CPUE and the number of sea lions in any locality or with either type of fishing gear. Furthermore, CPUE did not differ in the presence or absence of sea lion interactions and predation per unit effort did not vary between localities or seasons. It was concluded that neither the presence of sea lions nor the damage they cause were responsible for variations in CPUE.

scholarly journals VARIASI HASIL TANGKAPAN IKAN DARI PERAIRAN SAMUDERA HINDIA, YANG DIDARATKAN DI PPN SIBOLGA PANTAI BARAT SUMATERA TAHUN 2019

2021 ◽  
Vol 17 (2) ◽  
pp. 68-76
Author(s):  
Ria R Manik ◽  
Ewin Handoco ◽  
Jogi Arleston
Keyword(s):  
Fishing Ground ◽  
Skipjack Tuna ◽  
Business Unit ◽  
Catch Per Unit Effort ◽  
The West ◽  
Monthly Average ◽  
Research Material ◽  
Unit Effort ◽  
West Sumatra ◽  
The Indian Ocean

Overfishing and overcapacity is a problem for the sustainability of capture fisheries development. Indonesia has experienced overfishing or called overfishing and overcapacity or called excess fishing capacity. The west coast of the island of Sumatra has enormous fishing potential, both in territorial waters and in ZEE waters. The purpose of the study was to understand the trend of fluctuations in fish catches in the waters of West Sumatra. Assessing the effect of boat trips on fish catches in the waters of West Sumatra and providing basic information and management of fisheries in the waters of West Sumatra. The research material used is Catch per Unit Effort (CPUE) data. The overall data was monthly average data in 2019 with fishing ground areas in the Western waters of Sumatra, the Indian Ocean. The results showed the composition of catches in the waters of West Sumatra landed in PPN Sibolga there are three dominant types of fish, namely skipjack tuna 14.566.140 kg (49.90%), decapterus 6.404.470 kg (21.94%) and tunny 2.480.880 kg (8.50%), The dynamics of fish catches in PPN Sibolga in 2019 were highest in May at 3.945.143 kg and June was the lowest catch month of 1.093.292 kg and the average monthly catch in 2019 was 2.508.436 kg, the catch per business unit landed in PPN Sibolga in 2019 obtained the highest CPUE of 8.474 kg/trip (July 2019) and the lowest 1,755 kg/trip (June 2019).   ABSTRAK Overfishing dan overcapacity erupakan masalah keberlanjutan pembangunan perikanan tangkap. Indonesialah mengalami overfishing atau disebut penangkapan berlebih dan overcapacity atau disebut kelebihan kapasitas penangkapan.  Pantai Barat Pulau Sumatera memiliki potensi perikanan yang sangat besar, baik perairan teritorial maupun perairan ZEE. Tujuan dari penelitian adalah untuk memahami trend fluktuasi hasil tangkapan ikan di Perairan Barat Sumatera, mengkaji pengaruh trip kapal dengan hasil tangkapan ikan di Perairan Barat Sumatera dan memberikan informasi dasar dan pengelolaan perikanan di Perairan Barat Sumatera. Materi penelitian yang digunakan adalah data Catch per Unit Effort (CPUE). Keseluruhan data merupakan data rata-rata bulanan tahun 2019 dengan daerah fishing ground Perairan Barat Sumatera Samudera Hindia. Hasil penelitian menunjukkan komposisi hasil tangkapan di Perairan Barat Sumatera yang didaratkan di PPN Sibolga terdapat tiga jenis ikan yang dominan yaitu cakalang 14.566.140 kg (49,90%), layang 404.470 kg (21,94%) dan tongkol 2.480.880 kg (8,50%), Dinamika hasil tangkapan ikan di PPN Sibolga di tahun 2019  tertinggi terjadi pada bulan Mei sebesar 3.945.143 kg dan bulan Juni merupakan bulan hasil tangkapan terendah yaitu 1.093.292 kg dan rata-rata hasil tangkapan bulanan tahun 2019 adalah 2.508.436 kg, Hasil tangkapan per-unit usaha yang didaratkan di PPN Sibolga di tahun 2019 didapatkan CPUE tertinggi yaitu 8.474 kg/trip (Juli 2019) dan terendah 1.755 kg/trip (Juni 2019). Kata Kunci: CPUE, penangkapan berlebih, penangkapan ikan, PPN Sibolga, Perairan Barat Sumatera  

Experimental fishing for the Spider crab, Maia Squinado: sea and laboratory trials

1984 ◽  
Vol 64 (2) ◽  
pp. 251-259 ◽  
Author(s):  
Deborah M. Rodhouse
Keyword(s):  
Sex Ratio ◽  
West Coast ◽  
Size Composition ◽  
Spider Crab ◽  
Catch Per Unit Effort ◽  
The West ◽  
Summer Peak ◽  
Unit Effort ◽  
Pot Trials ◽  
Rocky Outcrops

Sea trials, using baited pots (inkwell and French barrel) and nets (tangle and gill), were conducted for the spider crab Maia squinado off the west coast of Ireland from November 1978 to July 1980. A series of laboratory pot trials using inkwell pots were performed. Diving observations were made on the fishing grounds.Catch per unit effort rose to a summer peak and decreased in autumn. There was no difference in size composition or sex ratio of the catch between the pots and nets. Mature males predominated in the catch with the highest male:female (M:F) ratios recorded in summer. Immatures were virtually absent from the catch. Segregation on the basis of sex and maturity appears to occur in summer. Mature males were found at about 10 m, in sandy areas with rocky outcrops. Mature females occurred at about 5 m, on a sand and shell gravel bottom with rock and weed (notably Laminaria). Immatures were rare and occurred just below the intertidal. The M:F ratio was lowest during the periods of the onshore and offshore migrations. Berried females were recorded from March to September with one brood produced each year.Laboratory pot trials showed increased aggression among spider crabs in the presence of baited pots. Males drove other males away from pots and divided their time between agonistic encounters and searching. Females were not driven away and did not engage in aggressive encounters. This behaviour, and the observation that large males could reach the bait through the pot bars, possibly explains the absence of larger and smaller males from the pots.

Current status of the spiny lobster, Panulirus argus, fishery in the Los Roques Archipelago National Park, Venezuela

2001 ◽  
Vol 52 (8) ◽  
pp. 1615
Author(s):  
Mario Yallonardo ◽  
Mario Yallonardo ◽  
Juan M. Posada ◽  
Juan M. Posada ◽  
Daniella M. Schweizer ◽  
...  
Keyword(s):  
Size Distribution ◽  
National Park ◽  
Spiny Lobster ◽  
Panulirus Argus ◽  
Current Status ◽  
Total Catch ◽  
Catch Per Unit Effort ◽  
Fishing Season ◽  
Unit Effort ◽  
Lobster Fishery

Los Roques Archipelago National Park traditionally accounts for 95% of the total Venezuelan catch of Panulirus argus. Lobsters are caught in traps and by skin divers, during a 6-month fishing season (1 November to 31 April). The current status of the fishery was evaluated through a comparison of the 1998–99 lobster fishing season with previous studies. Thirty trap licences and 41 skin-diving authorizations were granted in 1998–99. Catch per unit effort was estimated as 2.31 kg/trap/month and 155.66 kg/diver/month, values similar to those from the 1983–1985 and 1986–1988 seasons. Total catch for the 1998–99 season was estimated as 139.31 tonnes (67.1% from traps), 47.78% higher than official reports. Estimated total catch, however, decreased by 40% from previous scientific evaluations. This decline has been attributed to a reduction in numbers of both trap licences and active traps. Size distribution of the 665 lobsters examined was not statistically different from that found in previous studies. The similarities in catch per unit effort and size distribution between the fishing seasons 1983–1985, 1986–1988, and the present study reflect a relatively stable fishery. The spiny-lobster fishery remains the main source of income of the fishers in the archipelago.

scholarly journals Prayang Innovation Technology on Capture Results

2020 ◽  
Vol 25 (3) ◽  
pp. 179
Author(s):  
Samsul Huda ◽  
Siti Naviah ◽  
Natasya Habibah
Keyword(s):  
White Light ◽  
Research Method ◽  
Statistical Tests ◽  
White Shrimp ◽  
Fishing Gear ◽  
Initial Stage ◽  
Color Treatment ◽  
Java Sea ◽  
Different Color ◽  
Traditional Fishing

Prayang is  traditional fishing gear, a prohibition on the use of cantrang fishing gear by the Ministry of Maritime Affairs and Fisheries (KKP) requires an alternative replacement fishing gear, considering that the condition of the Java sea waters is already overfished. The study aims to determine the effect of using different color lights on prayang fishing gear on catches. The research method is an experiment by applying "light fishing" technology. The initial stage of the study was the use of lighting aids with different colors. Based on the results of statistical tests the lamp color treatment had no significant effect, the catch was dominated by white shrimp species for the use of white light and the shrimp continued to prefer green.

scholarly journals PERSEPSI BIRO PERJALANAN WISATA TERHADAP KENAIKAN HARGA TIKET MASUK MENUJU TAMAN NASIONAL BALI BARAT

2016 ◽  
Vol 4 (1) ◽  
pp. 54
Author(s):  
Gusti Ayu Putu Inten Pratiwi Kalpika ◽  
I Made Adikampana
Keyword(s):  
Data Collection ◽  
National Parks ◽  
National Park ◽  
Likert Scale ◽  
Price Increase ◽  
Literature Study ◽  
The West ◽  
Negative Perception ◽  
International Tourist ◽  
Tour Operator

Abstract                        This research is conduct in West Bali National Parks and focus on tour operator perception on price increase of entrance fee. The purpose of this study was to determine the perception of a tour operator towards the price increase of entrance fee to the West Bali National Park. Data collection was done by observation, interviews, questionnaires and literature study. The method used in this research is to analyze the data with the Likert Scale and described qualitatively.The results show that a tour operator on average have a negative perception or refuse towards the price increase of entrance fee to the West Bali National Park. That case cause by the price of entrance fee increase highly with amount is 1,150% for international tourist and 700% for domestic tourist. The price increase of entrance fee is not suitable and not increased in stages. Besides that, the price increase of entrance fee will influence the revenue of tour operator and also will influence tourist visits because there are many similar destination package tour what offer the cheaper price.  

scholarly journals Seasonal catch composition and catch per unit effort of coastal fishery in Yenişakran (Çandarlı Bay, Aegean Sea)

2020 ◽  
Vol 37 (1) ◽  
pp. 9-14
Author(s):  
Tuğçe Şensurat Genç ◽  
Okan Akyol
Keyword(s):  
Aegean Sea ◽  
Fishing Gear ◽  
Catch Per Unit Effort ◽  
Sandy Bottom ◽  
Fishing Trip ◽  
Unit Effort ◽  
Catch Composition

This study presents the catch records of a coastal fisherman during daily fishing trip between 2017 and 2018 in Yenişakran, Çandarlı Bay (Aegean Sea). The trammel net and longline were used at depths of 5-25 m on a sandy bottom and the sea meadows during the year. A total of 39 species were identified from the both trammel netting and the longlining. Mean catch per unit effort (CPUE) values (8.7±0.1 kg/1000 m net and 12.9±0.8 kg/1000 hooks) shown that longlining was more efficient fishing gear than the trammel netting. In terms of mean CPUE values, there is significantly difference between trammel netting and longlining (p<0.05).

The Forest in the Metropolis: Elk Island (Losinyi Ostrov) National Park and the Disappointments of the Russian National Park Movement

2018 ◽  
Vol 45 (3) ◽  
pp. 287-312
Author(s):  
Alan Roe
Keyword(s):  
Environmental Protection ◽  
National Parks ◽  
National Park ◽  
International Community ◽  
Government Officials ◽  
The West ◽  
Elk Island National Park ◽  
The Government ◽  
Do So

A 116 square-kilometer section of forest in the northwest part of Moscow, Elk Island National Park (Losynyi ostrov) became Russia’s first in 1983. Russian environmentalists became enamored with national parks through increased interaction with Western colleagues, Russian environmentalists, including the supporters of Elk Island National Park, asserted that the USSR’s lack of national parks demonstrated that Russian environmental protection efforts lagged behind the West. This strategy was successful in pushing the government to establish national parks, including Elk Island. However, Russian environmentalists have had much less success in convincing government officials to support, protect, and develop national parks, even as they frequently asserted that its failure to do so cast Russia in a bad light before the international community. Because of its highly visible location in Moscow, Elk Island’s struggles have been a particularly painful reminder for Russian environmentalists of the Russian Federation’s seeming disinterest in national parks.

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