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Potential Economic Losses Due to Tidal Inundation and Flood at Semarang City Suhelmi, Ifan R; Fahrudin, Achmad; Triwibowo, Ferdinand Hariyanto
Forum Geografi Vol 28, No 2 (2014): December 2014
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v28i2.428

Abstract

Coastal city of Semarang is susceptible to the impact of coastal hazard due to its flat topographic condition. Various environmental problems are faced by Semarang involve tidal inundation, land subsidence, and floods during rainy season. This study was conducted to examine the potential economic losses caused by the sea level rise phenomenon. Distribution of inundated area mapped using Digital Elevation Model and Land Subsidence data. The Scenarios of International Panel on Climate Change (2007) sea level rises used to build a model of inundated area that notes by 2030 the rise of sea level rise at 13.4 cm. The inundated map was overlayed with landuse map to calculate the potential economic losses. The results show that the inundated area that occurred in 2030 was 1,718.2 ha with the potential economic losses Rp. 6,130 trillion. With the land subsidence scenario that happen at the area, inundated area increased to 5,171.3 ha with the eonomic potential loss about Rp. 28,724 trillion.
Analisis Kelayakan Finansial Penangkapan Ikan di Waduk Koto Panjang Kabupaten Kampar Provinsi Riau Warningsih, Trisla; Djokosetiyanto, D; Fahrudin, Achmad; Adrianto, Luky
Jurnal Perikanan dan Kelautan Vol 21, No 1 (2016)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.21.1.18-24

Abstract

This study aimed to analyze the financial feasibility of fish catching in Koto Panjang Reservoir of Kampar District, Riau Province, using business and investment criteria analyses. The result showed that each engine boat and rowboat has IDR 29,313,301.59 and IDR 15,044,311.11 for their respective profit; 3.55 and 3.48 for their respective Revenue-Cost Ratio Value; 0,29/yr or 3.3 months and 0.30/yr or 3.6 months for their respective fishermen payback period; and 3.6 % and 4 % for their respective Return on Investment (ROI) value. Investment criteria analysis on fish catching for each engine boat and rowboat obtained Net Present Value (NPV)of 142,169,973.13 and 72,313,686.96, respectively; 3.01 and 2.91 for their respective Net B/C value; 49% and 46% for their respective Internal Rate of Return (IRR) value. Fish catching business in Koto Panjang Reservoir is deemed feasible because NPV>0, IRR>interest rate, and B/C>1 for both engine boat and rowboat
Potential Economic Losses Due to Tidal Inundation and Flood at Semarang City Suhelmi, Ifan R; Fahrudin, Achmad; Triwibowo, Ferdinand Hariyanto
Forum Geografi Vol 28, No 2 (2014)
Publisher : Forum Geografi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Coastal city of Semarang is susceptible to the impact of coastal hazard due to its flat topographic condition. Various environmental problems are faced by Semarang involve tidal inundation, land subsidence, and floods during rainy season. This study was conducted to examine the potential economic losses caused by the sea level rise phenomenon. Distribution of inundated area mapped using Digital Elevation Model and Land Subsidence data. The Scenarios of International Panel on Climate Change (2007) sea level rises used to build a model of inundated area that notes by 2030 the rise of sea level rise at 13.4 cm. The inundated map was overlayed with landuse map to calculate the potential economic losses. The results show that the inundated area that occurred in 2030 was 1,718.2 ha with the potential economic losses Rp. 6,130 trillion. With the land subsidence scenario that happen at the area, inundated area increased to 5,171.3 ha with the eonomic potential loss about Rp. 28,724 trillion.
STRUKTUR KOMUNITAS IKAN TARGET DI TERUMBU KARANG PULAU HOGOW DAN PUTUS-PUTUS SULAWESI UTARA Rembet, Unstain NWJ; Boer, Mennofatria; Bengen, Dietriech G; Fahrudin, Achmad
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 2 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (600.978 KB) | DOI: 10.35800/jpkt.7.2.2011.179

Abstract

ABSTRACTCommunity structure of target fishes was analyzed to understand their response to different conditions of coral reefs in several places of Hugow and Putus-Putus islands. This study focused on species abundance and diversity including Shannon-Wiener’s species diversity (H’), species richness (SR), species evenness (J’) and dominance (d) indices, respectively. A multivariate analysis was used for the classification or correspondence factorial analyses. The result recorded 4,501 individuals belonging to 52 species of target fishes. Both cluster and correspondence analyses clearly recognized 3 groups of target fish with 2 major controlling factors for the development of these 3 ecological groups, i.e. coral reef conditions and geographic position to the hydrodynamic condition.ABSTRAKStruktur komunitas ikan target dianalisis untuk melihat respon ikan target terhadap perbedaan kondisi terumbu karang di beberapa lokasi Pulau Hogow dan Putus-Putus. Penelitian ini dilakukan pada bulan Oktober 2010 dengan pengambilan data di 6 stasiun. Dalam penelitian ini telah dikaji variabel komunitas seperti kelimpahan dan keanekaragaman spesies termasuk indeks keanekaragaman spesies Shannon-Wiener (H’), indeks kekayaan spesies (SR), indeks kemerataan spesies (J’) dan indeks dominasi (d). Untuk melihat assemblage ikan target dilakukan analisis multivariat baik analisis klasifikasi maupun analisis faktorial koresponden. Dalam penelitian ini diperoleh 4501 indidu yang termasuk dalam 52 spesies ikan target. Analisis multivariat baik analisis cluster maupun analisis koresponden telah memisahkan dengan jelas 3 grup ikan target, dimana terdapat dua faktor utama pengendali pembentukan 3 grup ekologis ini yakni faktor kondisi terumbu karang dan faktor posisi lokasi terhadap kondisi hidrodinamika perairan.
STATUS KEBERLANJUTANPENGELOLAAN TERUMBU KARANG DI PULAU HOGOW DAN PUTUS-PUTUS SULAWESI UTARA Rembet, Unstain NWJ; Boer, Mennofatria; Bengen, Dietriech G; Fahrudin, Achmad
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 3 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.019 KB) | DOI: 10.35800/jpkt.7.3.2011.188

Abstract

ABSTRACTA study aimed to examine the status of sustainable management of coral reef in Pulau Hogow and Pulau Putus-Putus in Southeast Minahasa regency, North Sulawesi Province, was conducted in from July to September 2011. Diagnosis on the status of sustainable management of coral reef was presented in a sequence covering the ecological, economic, social, institutional and technological dimensions. In ecological dimension, the attribute of percentage of coral cover provided the largest contribution. In economical dimension, the largest contribution was provided by tourism guide, time used for coral reefs exploitation, dependency on the resource as a source of income and foreign tourists attributes. In social dimension, similar indications shown by the attributes of the number of locations which were potential for exploitation conflicts, level of education and efforts to repair the damage of coral reef ecosystems. On the institutional dimension, the contributions made by all attributes were almost even, with the highest is the tradition/culture and cooperation attributes. Similarly, in the technological dimension the contributions made attributes were almost even, with the highest contributions were from boat technology and technology post-harvest technology attributes. For overall dimensions of sustainability management of coral reefs, a map created in RAPFISH ordinate showed recommendation on the status of the sustainability.Keywords: sustainability, management, coral reef, dimension.ABSTRAKPenelitian ini bertujuan untuk menelaah status keberlanjutan pengelolaan te-rumbu karang di Pulau Hogow dan Putus-Putus Kabupaten Minahasa Tenggara Provinsi Sulawesi Utara, dilakukan pada bulan Juli-September 2011. Diagnosis status keberlanjutan pengelolaan terumbu karang dikemukakan secara berurutan mencakup dimensi ekologi, dimensi ekonomi, dimensi sosial, dimensi kelembagaan dan dimensi teknologi. Dalam dimensi ekologi atribut persentase penutupan karang memberikan kontribusi terbesar. Untuk dimensi ekonomi kontribusi terbesar diberikan atribut pe-mandu wisata, waktu yang digunakan untuk pemanfaatan terumbu karang, ketergan-tungan kepada sumberdaya sebagai sumber nafkah dan wisatawan mancanegara. Di-mensi sosial indikasi serupa ditunjukkan oleh atribut-atribut jumlah lokasi potensi kon-flik pemanfaatan, tingkat pendidikan dan upaya perbaikan kerusakan ekosistem terum-bu karang. Pada dimensi kelembagaan kontribusi yang diberikan atribut-atribut merata, tetapi yang tertinggi adalah tradisi/budaya dan koperasi. Demikian juga pada dimensi teknologi, kontribusi yang diberikan atribut-atribut merata, dengan kontribusi tertinggi adalah atribut teknologi perahu dan teknologi pasca panen. Untuk semua dimensi keberlanjutan pengelolaan terumbu karang, hasil pemetaan yang dilakukan dalam ordinasi RAPFISH menunjukkan status keberlanjutan yang baik untuk dilakukan.Kata kunci: keberlanjutan, pengelolaan, terumbu karang, dimensi.
KESESUAIAN DAN DAYA DUKUNG LAHAN UNTUK KEGIATAN WISATA DAN PERIKANAN DI PANTAI KOTA MAKASSAR SULAWESI SELATAN Hamzah, Hamzah; Fahrudin, Achmad; Efendi, Heffni; Muchsin, Ismudi
AgriSains Vol 12, No 3 (2011)
Publisher : FAPETKAN UNTAD

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Abstract

This research is intended 1) to know land suitability for tourism and fisheries at Makassar's coastal area 2) to calculate carryng capacity area for conducting tourism and fisheries at City coastal area of Makassar. This research done be conducted in City coastal area of Makassar South Sulawesi. Method used in research is land suitability analysis and carryng capacity coastal area for beach tourism and fisheries. Research result suitable area for beach tourism is 10.373,7 m. There Is even for  diving tourism is as extensive as 4,3 ha at Samalona's Island waters. Land suitability for floating cages is 490, 39 ha, seaweeds culture area is 1000,4 h. Carryng capacity for floating cages 8,796 ha, while is 3.258 units available. By use of long line method, therefore acquired 231 units on area as extensive as 554,25 ha. Carryng capacity for beach tourism : kayangan island 15 person; Lae Lae 53 ; Tanjung Bayang, Tanjung Bunga and Akarena 162 person; Losari's beach 137 person; Barombong's beach is 47 person. Key words : City coastal, area of Makassar South.
KAPASITAS ADAPTIF EKOSISTEM LAMUN (SEAGRASS) DI GUGUS PULAU GURAICI KABUPATEN HALMAHERA SELATAN PROVINSI MALUKU UTARA Subur, Riyadi; Yulianda, Fredinan; Susilo, Setyo Budi; Fahrudin, Achmad
AgriSains Vol 12, No 3 (2011)
Publisher : FAPETKAN UNTAD

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Abstract

Sea grass bed is an important ecosystem in coastal areas and small islands which plays important and effective roles as a protector of the coastal line and the safety of the mainland area of small islands. Physically, the roles of ecosystem were as erosion prevention, sediment trap and barrier of waves and currents. The existence of these ecosystems in the coastal regions and small islands was an important in enhancing the adaptive capacity of islands against natural disaster because the island serves as a natural protector. The aim of this research was to calculate and assess tha adaptive capacity of sea grass ecosystems growing in the waters of around the small islands in the group of Guraici. The research was conducted on 17 islands located in the group of Guraici islands. Measurement of adaptive capacity of sea grass ecosystem was done by analyzing 6 parameters, namely: Sea Grass Dimension Index (IDLn), Dominant Species of Sea Grass, Sea Grass Coverage Percentage (%), Number of Sea Grass Species, Substrate Type, Distance from The Point of Ecosystem. Sea Grass ecosystem adaptive capacity value was in the range between 0.0-1.0, with capacity of five categories of “very low, low, medium, high and very high”. These results indicated that sea grass ecosystem growing in the waters of around the islands in the island of group Guraici had adaptive capacity with values ranging between 0.0-0.59. The ranges of values were distributed into three categories of the adaptive capacities (very low, low and medium). A total of 13 islands had a capacity of sea grass ecosystem “medium”, the other three islands with capacity of “low” and one island with a capacity of “very low”.    Key words : Adaptive Capacity, seagrass ecosystem.
Vulnerability of Miangas Island Baroleh, Maartianus S.; Fahrudin, Achmad; Dahuri, Rokhmin; Susilo, Setyo Budi; Monintja, Daniel
Jurnal Ilmiah PLATAX Vol 7, No 1 (2019): ISSUE JANUARY-JUNE 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.1.2019.21546

Abstract

There are several methods of analysis in knowing the vulnerability of a community. In the analysis to determine the vulnerability of Miangas island, the determinant vulnerability was used. Determinant vulnerability evaluation is very easy to use and simple. Therefore, the determinants of ordinary vulnerabilities use an assessment of resources that are carried out in full, so that results can be used as reference for management. One approach that is widely used in determining the index is the method of scaling parameters into certain values. These values are expressed as a score of a parameter. As done by (Tahir 2010) referred to in Doukakis (2005) and Rao et al. (2008), the Miangas Island analysis refers to the determination of the paramater scale and the weight of the vulnerability.          The vulnerability index model constructed in this study consists of a static model of environmental vulnerability index and dynamic model of small island environmental vulnerability index. The static model of the environmental vulnerability index is intended to calculate the current vulnerability index (momentary), while the dynamic model of the environmental vulnerability index is used to predict the vulnerability dynamics in the future. In general, the values of IK-PPK = IE x IS / IAC = 4.29 x 2.35 / 1.6 = 6.30 By using these maximum and minimum values, the scale of assessment of the vulnerability of small islands is divided into 4 categories of vulnerability (Doukakis 2005), Miangas Island is obtained as follows; 0.20-6.04 = Low vulnerability, 6.05 -18.18 = Moderate vulnerability, 18.19-40.48 = High vulnerability (high), 40.49-76.00 = Very high vulnerability (very high). That there is a vulnerability with a moderate position.Keywords:  vulnerability, index, determinant, MiangasABSTRAKAda beberapa metode analisis dalam mengetahui kerentanan suatu komunitas.  Dalam analisis untuk mengetahui kerentanan pulau Miangas maka digunakan kerentanan determinan. Evaluasi kerentanan determinan sangat mudah digunakan dan sederhana. Oleh karna itu, determinan kerentanan biasa menggunakan assessment terhadap sumberdaya yang dilakukan secara utuh, sehingga hasil dapat dijadikan bahan acuan terhadap pengelolaan.   Salah satu pendekatan yang banyak digunakan dalam penentuan indeks adalah metode penskalaan parameter ke dalam nilai-nilai tertentu.  Nilai-nilai tersebut dinyatakan sebagai nilai skor dari suatu parameter.  Sebagaimana yang dilakukan oleh (Tahir 2010) yang diacu dalam Doukakis (2005) dan Rao et al. (2008) maka pada analisis Pulau Miangas mengacu penentuan skala paramater dan bobot kerentanan tersebut.Model indeks kerentanan yang dikonstruksi dalam penelitian ini terdiri dari model statis indeks kerentanan lingkungan dan model dinamik indeks kerentanan lingkungan pulau-pulau kecil.  Model statis indeks kerentanan lingkungan dimaksudkan untuk menghitung indeks kerentanan saat ini (sesaat), sedangkan model dinamik indeks kerentanan lingkungan digunakan untuk melakukan prediksi dinamika kerentanan pada masa yang akan datang. Secara umum didapatkan nilai IK-PPK = IE x IS/IAC =  4,29 x 2,35 /1,6 = 6,30. Dengan menggunakan nilai maksimum dan minimum tersebut, skala penilaian tingkat kerentanan pulau-pulau kecil dibagi menjadi 4 kategori kerentanan (Doukakis 2005) maka Pulau Miangas didapatkan sebagai berikut; 0.20-6.04 = Kerentanan rendah (low), 6.05-18.18 = Kerentanan sedang (moderate), 18.19-40.48 = Kerentanan tinggi (high), 40.49-76.00 =         Kerentanan sangat tinggi (very high). bahwa ada kerentanan dengan posisi moderate.Kata kunci :  kerentanan, determinan, indeks, Miangas
Penilaian Ekonomi Wisata Pesisir Kawasan Carocok Painan, Kabupaten Pesisir Selatan, Sumatera Barat Khairunnisa, Khairunnisa; Kusumastanto, Tridoyo; Fahrudin, Achmad
Jurnal Ekonomi dan Pembangunan Indonesia Vol 18 No 1 (2017): Juli 2017
Publisher : Department of Economics-FEB UI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (723.737 KB) | DOI: 10.21002/jepi.v18i1.672

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Economic Assesment of Coastal Tourism in Carocok Painan, Pesisir Selatan Regency, West SumateraCarocok Painan is one of the potential areas for coastal tourism in Pesisir Selatan Regency. The area has beautiful beaches, coastal resources and historical sites that attract tourists. This study aims to estimate the supply and demand for coastal tourism in Carocok Painan. The supply conditions based on water quality analysis, suitability area, and carrying capacity show that the Carocok Painan is suitable for coastal tourism. The analysis of demand shows that the economic value of Carocok Painan for tourists using the travel cost method is Rp41,521,536,000 per year, while the economic value for residents using contingent valuation method is Rp347,756,632 per year. Keywords: Carocok Painan; Coastal Tourism; Contingent Valuation Method; Economic Valuation; Tourism Economic Value; Travel Cost Method AbstrakCarocok Painan merupakan salah satu kawasan yang potensial untuk tujuan wisata pesisir di Kabupaten Pesisir Selatan. Kawasan ini memiliki pantai yang indah, sumber daya pesisir dan situs sejarah yang dapat menarik wisatawan. Penelitian ini bertujuan untuk memperkirakan kondisi penawaran dan permintaan wisata pesisir Kawasan Carocok Painan. Kondisi penawaran berdasarkan analisis kualitas air, kesesuaian lahan, dan daya dukung menunjukkan bahwa Kawasan Carocok Painan sesuai untuk wisata pesisir. Analisis kondisi permintaan menunjukkan bahwa nilai ekonomi Kawasan Carocok Painan bagi wisatawan yang diestimasi dengan travel cost method adalah Rp41.521.536.000 per tahun, sedangkan nilai ekonomi bagi penduduk yang diestimasi dengan contingent valuation method adalah Rp347.756.632 per tahun.
Studi Ekonomi Pemanfaatan Sumberdaya Ikan Karang Konsumsi di Kabupaten Sikka, Nusa Tenggara Timur Bhokaleba, Barnabas Pablo Puente Wini; Fahrudin, Achmad; Adrianto, Luky
Jurnal Aplikasi Manajemen Vol 13, No 1 (2015)
Publisher : Jurusan Manajemen Fakultas Ekonomi dan Bisnis Universitas Brawijaya

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Abstract

Abstract: This research aimed to determine the feasibility of fishing of reef fish for consumption and optimum utilization of reef fish. This research conducted at Sikka District using primary and secondary data. The analysis used in this study using the proposed feasibility (Kadariah et.al, 2001) and the Bioeconomic analysis by Clark, Yoshimoto and Pooley (1992). Businesses reef fishing is using fishing gear, gill nets and traps remain profitable and feasible to be developed because of the NPV Rp38,414,136.75, Rp44,403,139.89 and Rp1,893,186.47; IRR 111%, 61% and 22 %, and the value of net Benefit-Cost 12.64, 5.30, and 1.19. Optimal exploitation of biological of reef fishery management were 1,907,168 fishing effort, 397.18 ton per year production and Rp3.782.990.000 economic rent per year. While the optimum economic exploitation of reef fishery management were 1,537,262 fishing effort, 382.24 ton per year productions and Rp4.015.500.000 economic rent per year. Although reef fishing business benefits but the exploitation rate carried out by fishers had dedicated over exploitation so that government policy to limit the fishing effort should be imposed.Keywords: economic policy, reef fish for consumption, Sikka district