Monday, July 23, 2018

Sustainable Fisheries

Analisis Usaha Tambak Garam di Desa Pangarengan Kecamatan Pangenan Kabupaten Cirebon (2018)

By Jason Trikobery, Achmad Rizal, Nia Kurniawati & Zuzy Anna

Abstract:

Garam sebagai salah satu produk sumberdaya perikanan non hayati yang memiliki prospek bisnis yang cukup bagus, karena garam merupakan kebutuhan yang sangat penting bagi manusia seperti bahan pangan, bahan kimia, dan bahan pengawet. Penelitian ini bertujuan untuk menganalisis kinerja finansial dan keragaan produksi tambak garam di Desa Pengarengan. Penelitian ini dilakukan dengan metode studi kasus dengan teknik wawancara dan kuesioner. Kedua skala kelompok usaha tambak garam terdiri dari lahan pribadi dan lahan sewa menunjukkan menguntungkan dan layak untuk dijalankan. Kinerja finansial usaha garam lahan pribadi yakni pendapatan sebesar Rp. 35.210.000, GPM (53%), R/C rasio (1,86), PP (9 bulan), dan NPV hingga 5 tahun mendatang sebesar Rp. 198.139.803. Sedangkan kinerja finansial usaha garam sewa lahan yakni pendapatan sebesar Rp.32.355.000, GPM (53%), R/C rasio (1,74), PP (10 bulan), dan NPV hingga 5 tahun mendatang sebesar Rp. 195.075.632. Secara keseluruhan, benefit yang diterima petambak termasuk baik karena dapat menutupi biaya operasional yang dikeluarkannya dan memperoleh keuntungan.

For further information click here

Indonesian shrimp resource accounting for sustainable stock management (2017)

Abstract:

Shrimp fisheries is a resource of important economic value, and is one of the high-demand commodities. Although regarded as a resource that has the ability to grow relatively quick and allows for a year-round production, these resources could experience declining production, or even extinction, if not managed properly. Planning the management of shrimp fishery stock requires basic information on the stock dynamics, both in terms of its natural production and utilization, through resource accounting, mandated by the Agenda 21 of United Nation Conference on Environment and Development (UNCED), formulated in the System of Integrated Environmental and Economic Accounting (SEEA). This study measures the accounting of the shrimp resources, both physical and monetary. In addition, the study also aims to measure the shrimp resource that can be utilized (fishable biomass), from the balance of resources. The approach used in this study is a standard bioeconomic model, with Fox model to estimate biological parameters, and methods of System of National Accounts of FAO (2004), named recursive model, adapted to the existing data. The results of the analysis, includes the calculation of standing stocks (physical asset account), fishable biomass, depletion, as well as monetary accounts. Result shows that the overall condition of the stock still in surplus, where the standing stocks from 1988 to 2014, are in the range of 200,000 to 900,000 tons yearly, with the monetary value between IDR 500 billion to 2 trillion. The intrinsic growth of shrimp tend to be positive in average, with values in the range of -258,000 tons to 263,890 tons. The trend estimation for the next five years (2015-2020), showed a decrease in the stock, and the stock closed as many as 350,000 tons in 2020. This paper also suggests the policy recommendations for the development and management of shrimp resources, in Indonesia.

For further information click here

Analisis Konversi Lahan Budidaya Perikanan di Kecamatan Dayeuhkolot Kabupaten Bandung (2018)

By Cyntia Kurniawati, Zuzy Anna & Yayat Dhahiyat

Abstract:

Pertumbuhan jumlah penduduk dan tingkat ekonomi masyarakat menyebabkan maraknya pembangunan infrastruktur yang mendorong terjadinya konversi lahan. Oleh karenanya penelitian ini dilakukan dengan tujuan : (1) mengetahui kinerja usaha budidaya perikanan (2) menggambarkan tren konversi lahan budidaya perikanan (3) menganalisis faktor-faktor yang menyebabkan terjadinya konversi lahan budidaya perikanan. Data yang diambil berupa data primer dan data sekunder dengan metode yang digunakan yaitu metode survey menggunakan teknik sampling jenuh. Selanjutnya data yang didapatkan dianalisis secara deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa pada periode tahun 2008-2012 lahan budidaya perikanan di Kecamatan Dayeuhkolot mengalami penurunan paling tinggi yaitu sebesar 40,8%. Keuntungan rata-rata yang didapatkan oleh pembudidaya yaitu sebesar Rp. 1.309.512, sedangkan hasil uji regresi logistik menggunakan aplikasi SPSS 21 menunjukan bahwa variabel-variabel dependen yang digunakan memiliki pengaruh terhadap keputusan pembudidaya dalam melakukan konversi lahan budidayanya sebesar 58,5% dan variabel yang memberi pengaruh nyata pada taraf nyata 5% terhadap variabel dependen yaitu variabel keuntungan (X2).

For further information click here

Pengaruh Perbedaan Siphonisasi dan Aerasi Terhadap Kualitas Air, Pertumbuhan, dan Kelangsungan Hidup pada Budidaya Ikan Nila (Oreochromis niloticus) Stadia Benih (2017)

By Aghnia Nur Islami, Zahidah Hasan & Zuzy Anna

Abstract:

Salah satu kendala dalam budidaya ikan nila selain ketersediaan akan benih yang mencukupi adalah kualitas air. Faktor penting yang perlu diperhatikan dalam menunjang keberhasilan usaha akuakultur adalah penyediaan lingkungan yang sesuai dengan benih, sehingga diperoleh kelangsungan hidup yang tinggi. Faktor-faktor yang mempengaruhi kualitas air dalam kegiatan akuakultur antara lain: suhu air, oksigen terlarut (DO), derajat keasaman (pH), alkalinitas, ammonia, nitrit, nitrat, karbondioksida, dan bahan organik terlarut lainnya. Pakan dalam akuakultur juga mempengaruhi kualitas air. Sisa metabolisme dan sisa pakan yang tidak termakan ada yang terlarut dan mengendap di kolam akuakultur dapat mempengaruhi parameter kimiawi dan fisik kualitas air yang ada di dalam air pada kolam akuakultur. Agar kualitas air tetap terjaga perlu dilakukan sistem pengeluaran air (siphon). Selain pengeluaran air yang perlu diperhatikan dalam menjaga kualitas air di dalam kolam akuakultur adalah aerasi. Penelitian ini bertujuan untuk menentukan perlakuan terbaik untuk menjaga atau mempertahankan kualitas air di dalam budidaya ikan nila stadia benih dan mengetahui dampak perlakuan siphon dan aerasi dalam menjaga kualitas air. Penelitian dilakukan selama bulan Juli sampai dengan akhir September 2016 di Laboratorium Kualitas Air PPSDAL DRPMI UNPAD. Metode penelitian yang digunakan adalah metode eksperimental, yaitu dengan menggunakan Rancangan Acak Lengkap Faktorial (RALF) dengan dua faktor dan  masing-masing dua taraf. Perlakuan berupa disiphon setiap tiga hari sekali dan aerasi diberikan setiap tiga hari sekali selama 5-6 jam, siphon dilakukan setiap hari dan diberi aerasi sepanjang waktu, siphon dilakukan setiap tiga hari sekali dan diberi aerasi sepanjang waktu, dan siphon dilakukan setiap hari dan diberi aerasi setiap tiga hari sekali selama 5-6 jam. Parameter yang diamati meliputi DO, pH, BOD5, kelangsungan hidup, pertumbuhan dan ammonia unionized. Hasil penelitian menunjukan bahwa perlakuan dengan pemberian aerasi sepanjang waktu dan siphonisasi setiap hari merupakan perlakuan yang baik menjaga kualitas air untuk pertumbuhan pada budidaya ikan nila (Oreochromis niloticus) stadia benih dengan tingkat laju pertumbuhan spesifik terbaik sebesar 0,0112 dan tingkat kelangsungan hidup terbaik sebesar 100%.

For further information click here

Biological parameters of fish stock estimation in Cirata Reservoir (West Java, Indonesia): A comparative analysis of bio-economic models (2017)

By Zuzy Anna, Asep A. H. Suryana, Ine Maulina, Achmar RIzal & Purna Hindayani

Abstract:

Fish resources in reservoirs such as Cirata have a strategic value, especially for the surrounding community in terms of fulfilling the need for nutricious food, subsistence, and economic purposes. Unfortunately, until now there has been no serious attention from the government to develop and manage fish resources in these waters. From time series data it can be seen that there is a decrease in fish production, which is an indication of a decrease of fish stock, which has a negative impact on the wellfare of surrounding commmunity, as well as the sustainability of fish resources and their ecosystems. To meet the food safety and economic needs of the community, a healthy and sustainable fish resource is a must, characterized by sustainable inputs and outputs, so that the stock of fish resources will be maintained. In order to fulfill this need, a basic understanding of the biological and economic conditions of the dynamics of fish resources in these waters as a basis for sustainable management is needed. Research was conducted to calculate the biological parameters of fish resources through Fox, CYP, Walters Hilborn and Schnute algorithms, using quarterly catch and effort data from 2011 to 2015, collected from secondary and cross checking data. Furthermore, using price and cost data series, adjusted by consumer price index, the variable of input, output and economic rent of sustainable, optimal and open access management regimes were analyzed. The results of the study indicate that the most statistically appropriate model for estimating biological parameters in Cirata are the Fox and CYP models, and fisheries management using the optimal regime provides the most efficient results, where fewer inputs will result in the maximum profit. The research suggests the need for immediate enforcement of management rules based on sustainable management regimes through input or output restrictions on capture fisheries in Cirata Reservoirs

For further information click here

Indonesian Small Pelagic Resource Accounting (2017)

Abstract:

Fish is one of natural resources, which is important for food security. Small pelagic fish is one of the sources of food, the most widely consumed by people of Indonesia, given the existence of a fairly abundant species, and are found in almost entire territorial waters of Indonesia, and also has a relatively affordable price. Management of pelagic fishery in the waters of Indonesia, thus becomes important, especially to maintain the sustainable industry. Optimal and sustainable fisheries industry can only be achieved with proper planning through the implementation of appropriate management instruments as well. Fisheries resources accounting is one of the planning instruments, which should be used as a main reference of Fisheries Management Plan. In general, fisheries accounting provide insights for policy makers on how the flow of the stocks of fish and its relation to changes in the dynamic of natural and economic activity of fishing. Small pelagic resource accounting is one of the mandates of agenda 21 UNCED recommendation, as formulated in the System of Integrated Environmental and Economic Accounting (SEEA). Besides, this is also a decree of Indonesian Law No. 32/2009 regarding the Management and Environmental protection. The paper discusses the fisheries account, both physical and monetary, for small pelagic fish. By using resource accounting, we can understand the dynamics of the availability of stocks of small pelagic fisheries in Indonesia for the sake of food security. The methods in use is the standard bio-economic modelling, using fox algorithm for parameter estimation, and resource accounting method of the System of National Accounts of FAO [1], adapted to the data existing condition. The results of the analysis, include measurement of standing stocks (physical assets account), fishable biomass, depletion, as well as monetary account. Paper also provides suggestion for management, as well as policy recommendation.

For further information click here

Economic valuation of whale shark tourism in Cenderawasih Bay National Park, Papua, Indonesia (2017)

By Zuzy Anna & Dicky Surya Saputra

Abstract:

The whale sharks aggregation in the waters of Cenderawasih Bay has an impact on improving the marine tourism industry in the region. On the other hands, Whale Shark is one of the species listed in the Red List of Threatened Species by the International Union for Conservation of Nature (IUCN), the vulnerable status, means that a whale shark populations have been reduced by 20% to 50% within 10 years or three generations. The decline numbers of whale sharks caused by human activities that damage the fish and the habitat, such as fishing and tourism activities. This is due to the lack of public awareness about the function and value of these resources and its habitat. The whale shark has inherent value as marine resources, and has an environmental services value, in relation to tourism activities. This paper measures the economic value and environmental services of the whale shark and its habitat. The method of Travel Cost is used to calculate the value of expenditures incurred by both foreign and local tourists. The study also measured the value obtained by tourist operators, the value of fishing activities, and the value of the habitat, through the people’s Willingness to Pay (WTP), using Contingent Valuation Method (CVM). From the result of the overall economic valuation can be determined the estimated value of whale shark tourism, as well as Cenderawasih Bay National Park area, amounted to IDR 35.5 trillion. The policy implication of this research is the need for appreciation of the whale sharks value, as well as its habitat, by managing and developing conservation areas, and community capacity building on the understanding of the importance of whale sharks and its conservation.

For further information click here