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Featured researches published by Yudi Wahyudin.


Bonorowo Wetlands | 2017

Characteristics of Coastal and Sea Resources in Palabuhanratu Bay Area, Sukabumi District, West Java

Yudi Wahyudin

Coastal region is an interlinkage area between the land and ocean with its own characteristics which has a significant impact on the typical characteristic of the area. This typical characteristic is not only to natural resources, but also to the characteristics of human resources and social institutions. Understanding of the characteristics of natural resources, human resources and coastal zone management system depend largely on how much information is obtained, the area width, and how much time and funds available for studying it. Therefore, many planners making schemes and approaches to anticipate a variety of information bias arising from these limitations.Characteristics of coastal and marine resources of Palabuhanratu Bay quite complex and require specific management policies in order to give life and livelihood in an optimal and sustainable. Therefore, the integration approach to resource management and systems approach is the best management approach for ecological sustainability, social and economic development in Palabuhanratu Bay. The integration of the management includes the integration of ecological and sectoral integration, integration of disciplines and integration of stakeholders, while the systems approach include environmental and natural resource systems, human systems and management systems.


Archive | 2015

Estimating and Measuring of the Value of Pelagic Tourism System - Preliminary Mapping and A Literature and Secondary Reviews

Luky Adrianto; Yudi Wahyudin

This article proposed selected tourism services of the pelagic system in the Lesser Sunda Ecoregion that will be mapped, measured, and valued in the content of mapping ocean wealth of the Lesser Sunda Ecoregion of Indonesian Pelagic System. This article also reviewed view of the applied methodology for valuing ecosystem services (type of cultural services - tourism activities) and overview the existing value of cultural services (tourism activities) based on a view of literature survey. At the end, this article also proposed the method to value tourism services of the pelagic system in the Lesser Sunda Ecoregion.


Archive | 2013

Status Perikanan di Wilayah Pengelolaan Perikanan (WPP RI 571 - Laut Andaman dan Selat Malaka) (Fisheries Status of Indonesian Fisheries Management Zone (WPP RI 571- Andaman Sea and Malacca Strait))

Yudi Wahyudin

Wilayah Pengelolaan Perikanan Repubik Indonesia (WPP RI) merupakan sistem pewilayahan pengelolaan perikanan yang diegallisasi dengan diterbitkannya Permen KP No. PER 01/MEN/2009. WPP 571 merupakan satu dari sebelas wilayah pengelolaan yang meliputi perairan Laut Andaman dan Selat Malaka dan secara administrasi meliputi wilayah Provinsi NAD bagian timur, Riau dan bagian timur Sumatera Utara. Status perikanan di WPP 571 ini meliputi status sumberdaya ikan dan status pemanfaatannya serta status infrastruktur perikanan. Status sumberdaya ikan disajikan dengan melihat keragaan potensi sumberdayanya, status pemanfaatan sumberdaya ikan disajikan dengan melihat keragaan sumberdaya manusia yang melakukan pemanfaatan, armada penangkapan dan alat tangkap yang digunakan dan besaran produksi yang dihasilkan akibat aktivitas penangkapan, sedangkan infrastruktur perikanan disajikan dengan melihat ketersediaan pelabuhan perikanan dan kelembagaan ekonomi yang ada di WPP 571. Fisheries Management Zone (WPP RI) is a zoning system that has been legalized based on Ministry Regulation of Marine Affairs and Fisheries No. PER 01/MEN/2009. WPP 571 is one of eleven management zone, which is including the waters of Andaman Sea and Malacca Strait and administratively included a part of Aceh province territory (eastern coast), Riau and North Sumatra province (eastern coast). Fisheries status of this WPP 571 are consisting a status of fisheries resources and its utilization status, and also status of its fisheries infrastructure. The fisheries status showed based on the current status of its potency of fisheries resources, the status of its fisheries resources utilization showed based on overviewing its human resources status, fishing vessel and its gears and its production/harvesting status, meanwhile fisheries infrastructure status showed based on the availability of its fishing ports and its economic institution which available in WPP 571.


Archive | 2013

General Socio-Economic Profile of Coastal Community

Yudi Wahyudin

The nature and characteristics of coastal communities is strongly influenced by the type of their activities, such as fishing effort, fishery ponds, fishery product processing enterprises, and coastal agricultural that are predominantly carried out by them. Therefore, the discussion of the characteristics of the public beach/coast is focused on the group. Coastal communities have traits or certain characteristics typical/unique. This property is closely associated with the nature of business in the fishery itself. Due to the nature of the fishing effort is strongly influenced by factors such as environment, season and market, then the characteristics of coastal communities are also affected by these factors. Fishing community is very sensitive to price. Changes in fishery product prices greatly affected the socioeconomic conditions of fishing communities.


Archive | 2013

Metode Penentuan Indeks Kepekaan Lingkungan Untuk Area Pemukiman Di Wilayah Teresterial (Methodology on Defining Environmental Sensitivity Index for Settlement Area in Terrestrial Zone)

Yudi Wahyudin

Indeks kepekaan lingkungan (IKL) ditentukan berdasarkan hasil perkalian indeks kerentanan (IK), indeks ekologis (IE) dan indeks sosial-ekonomi (IS). Masing-masing komponen indeks terdiri atas beberapa komponen nilai kerentanan (jumlah rumah dan jarak pemukiman – pipa), komponen nilai ekologis (prosentase pengguna sumur dan jarak pemukiman ke saluran air kali/sungai, serta komponen nilai sosial (jumlah penduduk, balita, pendidikan, kondisi aksesibilitas dan bangunan keramat/dikeramatkan) dan ekonomi (nilai rente lahan dan pendapatan per kapita per tahun). Environmental sensitivity index (ESI) is defined by multiplying vulnerability index (VI), ecological index (EI) and socio-economic index (SI). Each component consists of a few vulnerability values (number of houses and the distance of settlement to pipeline), ecological value (percentage user of freshwater well and the distance of settlement to river flow), and social value (number of population, toddlers, education, accessibility condition and sacred building) and economic value (land rent value and income per capita per year).


Archive | 2012

Formula Penyederhanaan Penjumlahan Angka Berurutan) Formula Simplification of Sequential Numbers Addition

Yudi Wahyudin

Penjumlahan angka berurutan tidak lagi menjadi masalah, karena dapat disederhanakan, yaitu bilamana i merupakan sebuah angka berurutan dari mulai j sampai k, dimana i, j, dan k merupakan angka numerik, maka perhitungan penjumlahannya dapat dihitung dengan cara mengalikan k dengan hasil pertambahan k dengan 1 kemudian hasilnya dikurangi dengan hasil perkalian dari j yang dikalikan dengan hasil pertambahan j dikurangi 1, hasil keseluruhannya kemudian dibagi dengan angka 2.The sum of sequentially numbers is no longer a problem, because it can be simplified, i.e. when i is a sequentially number starting from j to k, where i, j, and k is a numerical digit, then the sum calculation can be calculated by multiplying k with k-added results with 1 then the result is reduced to the multiplication of j are multiplied by yield increment j minus 1, the overall result is then divided by the number 2.


Archive | 2011

Economic Development Policy Based Natural Resource and Environment

Mahifal; Yudi Wahyudin

The implementation of regional development will always be associated with local capacity to manage and utilize local resources optimally for the maximum benefit of development and regional development. Local resources referred to in this regard include human resources, natural resources, capital resources (financial), and the technology used. Regional capacity to manage local resources is strongly associated with how a pillar of good governance implementation.Local governments should be able to put their function as providers of optimal services to the community. Therefore, the development planning process should be undertaken to implement the process of bottom up development planning. Bottom-up planning process is one of the state media to be able to socialize in a focused and integrated to a process of development and implementation. In this case, the public are invited to be able to understand voluntarily on the procedures for planning and implementation process of development.Placement of the community as a determining factor in economic development is very necessary because it fits with the concept of economic development based on principles of equity, justice and social welfare. In addition, the concept of subject and object of development is also in accordance with the motto of national development, namely from the people, by the people and for the people.Application of economic development policy based natural resources and environment is very needed to be implemented nationally in all regions in Indonesia, given the role of regions in the era of regional autonomy is very significant in order to support and realize the ideals of national development, namely realizing a fairness and prosperous community of Indonesia.


Archive | 2007

Ecological Efficiency Comparison of Fisheries Resources Utilization

Yudi Wahyudin; Michael Ritthoff

The faster developing of fisheries activities could give some negative impacts for environment. The problems such as over-fishing, by-catch, habitat degradation, and fisheries management could be the main issues that developed with the activities of this sector. Coastal fisheries valued over-fishing, meanwhile high fisheries is not optimally utilized yet. For giving recommendation to develop fisheries need a holistic study. The beginning step is studying the comperazing of ecological efficiency between coastal – and high fisheries. The objective goal of this study is knowing the comperazing of ecological efficiency between coastal – and high fisheries in Sukabumi District. The method use MIPS (Material Input Per Service unit) that developed by Wuppertal Institute for Climate, Environmental, Energy (WI). The result of MIPS calculation show the different of ecological efficiency. For having 1 kg fresh fish from high fisheries and directly saled need the abiotic input 0,19 kg, biotic 1,26 kg, water 1,49 kg and air 0,03 kg, meanwhile for having 1 kg fresh fish from coastal fisheries and directly saled need the abiotic input 0,14 kg, biotic 1,33 kg, water 1,08 kg and air 0,04 kg. Averagely for having 1 kg fish from high fisheries need the material input of abiotic 0,35 kg, biotic 1,41 kg, water 2,89 kg and air 0,12 kg, meanwhile for having 1 kg fish from coastal fisheries need the material input of abiotic 0,27 kg, biotic 1,34 kg, water 1,95 kg and air 0,10 kg.


Archive | 2006

Optimum Fisheries Resources Allocation at the Waters of Palabuhanratu Bay: Demersal Fisheries Resources

Yudi Wahyudin; Tridoyo Kusumastanto; Moch. Prihatna Sobari

In this paper, production surplus function and Pontryagin Maximum Principles were used as the approach for optimum allocation. Production surplus function and Pontryagin Maximum Principles were used as the approach for optimum allocation. Biological parameter, such as r, q, and K estimated with Walters-Hilbron (WH: 1976) and CYP (1992) estimator models. WH (1976) was basically using Logistic growth function, while CYP (1992) was basically using Gompertz growth function. Based on the analytical solution using MAPLE 9.5 for demersal at Palabuhanratu Bay with annual continues discount rate ( δ)=4,04%, per year optimal biomass (x*) = 7.211,35 tonnes, optimal yield (h*) = 2.758,30 tonnes and optimal effort (E*) = 11.250 trip in hand line standard level. The demersal resources rent is estimated Rp 1.264,05 million, while its over time rent = Rp 31.288,36 million. Using annual continues discount rate of 4,04%, optimal harvest per trip as hand line standard level of effort is 245,18 kg. The number of optimal fishing gears based on the dynamic analytical model is arround 38 unit as hand line standard level. Consenquently, optimal number of hand line fishermen can be calculated to be 113 people, respectively.


Ecological Economics | 2018

A Social Ecological System of Recreational Fishing in the Seagrass Meadow Conservation Area on the East Coast of Bintan Island, Indonesia

Yudi Wahyudin; Tridoyo Kusumastanto; Luky Adrianto; Yusli Wardiatno

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Luky Adrianto

Bogor Agricultural University

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Tridoyo Kusumastanto

Bogor Agricultural University

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Yusli Wardiatno

Bogor Agricultural University

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Moch. Prihatna Sobari

Bogor Agricultural University

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