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All Journal Jurnal Teknologi Perikanan dan Kelautan Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)

Dedi Soedharma

Departemen Ilmu dan Teknologi Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor

Author-ID : 2478987

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Environmental Science Library & Information Science

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Articles

ANALISIS STRUKTUR KOMUNITAS MAKROALGA EKONOMIS PENTING DI PERAIRAN INTERTIDAL MANOKWARI, PAPUA BARAT Hendrik Victor Ayhuan; Neviaty Putri Zamani; Dedi Soedharma
Jurnal Teknologi Perikanan dan Kelautan Vol 8 No 1 (2017): MEI 2017
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Macroalga in Manokwari area has higher species biodiversity, however this organism is very risk to environmentkondition change either nature or anthropogenic pressure. This study aimed to composition species of algae (clasification and identification) and community assemblage analysis of macroalgae species surrounding Manokwari coastal area. Collecting data was done during east season period (from June 2014 to September 2014) from two different main coastal areas, mainland and outland coastal area. Twenty eight macroalga species were identified and consisted taxonomically of three divisions, three classes, eleven orders, sixteen families, and nineteen genus. Three divisions of macroalga species were green alga (Chlorophyta), red alga (Rhodophyta), and brown alga (Phaeophyta), which each division comprised with 14 species, 8 species, and 6 species respectively. Total of density average of macroalga species in outland was higher than that of in mainland. Structure analysis of macroalga community in outland areas (Mansinam and Lemon) had higher biodiversity index than that of in mainland areas (Rendani, Pasir Putih, and Arfai). Evenness index in both mainland and outland areas were closed to 1, which meant individual of macroalga from each species distributed uniformly and there was no dominant macroalga species. While dominancy index in either mainland or outland reached closely to zero, which meant macroalga community were stable.

STRUKTUR KOMUNITAS LAMUN DI PULAU WANCI, KABUPATEN WAKATOBI, SULAWESI TENGGARA Nur Ikhsan; Neviaty Putri Zamani; Dedi Soedharma
Jurnal Teknologi Perikanan dan Kelautan Vol 10 No 1 (2019): MEI 2019
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Lamun merupakan tumbuhan laut yang memiliki peran yang tidak kalah penting dengan ekosistem pesisir lainnya seperti terumbu karang dan mangrove baik dari segi fisik, ekologi, dan ekonomi. Indonesia memiliki 12 jenis lamun dari 58 jenis lamun di dunia. Tidak semua wilayah di Indonesia memiliki jumlah jenis yang sama karena perbedaan kondisi lingkungan atau tekanan antropogenik, sehingga perlu ada kajian keragaman jenis lamun di wilayah perairan Indonesia. Penelitian ini bertujuan untuk mengidentifikasi struktur komunitas lamun dan keterkaitan antara kerapatan lamun dan parameter lingkungan di perairan Pulau Wanci, Sulawesi Tenggara. Stasiun pengamatan berada pada daerah padang lamun yang dibagi menjadi 4 stasiun. Metode sampling yang digunakan mengacu pada McKenzie et al. (2001) menggunakan transek kuadrat 50 cm x 50 cm. Selanjutnya menghitung jumlah tegakan lamun dan mencatat jenis lamun yang ditemukan pada tiap transek kuadrat. Hasil penelitian menunjukkan bahwa ditemukan 7 jenis lamun di perairan Pulau Wanci yaitu Halophila ovalis, Halodule uninervis, Cymodocea rotundata, Thalassia hemprichii, Enhalus acroides, Thalasodendron ciliatum, dan Syringodium isoetifolium dengan kerapatan tertinggi didominasi oleh T. hemprichii, H. uninervis, dan C. rotundata dengan pola sebaran keseluruhan adalah mengelompok. Terdapat keterkaitan antara kerapatan lamun dengan parameter lingkungan, substrat berpasir memiliki korelasi positif yang tinggi terhadap kerapatan lamun sedangkan substrat liat, kecepatan arus, salinitas, dan suhu memiliki korelasi negatif yang rendah sampai tinggi terhadap kerapatan lamun di perairan Pulau Wanci.

PENGELOLAAN PERIKANAN PELAGIS KECIL BERBASIS DAYA DUKUNG LINGKUNGAN PERAIRAN DI KEPULAUAN SANGIHE Achmad Nasir Biasane; Akhmad Fauzi; Daniel R. Monintja; Dedi Soedharma
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 2 No. 1 (2012): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.2.1.37

One of the potency for development of Sangihe Islands is sea and the availability of fish resources which is relatively high, both in terms of quantity and diversity. One of the fish types with high quantity in this area are pelagic fish group. This research aims to analyze the management of small pelagic fishing in order to maintain its sustainability. The research result indicate that the average sustainable production of the small pelagic for 20 years (1988-2007) observation was 3,128.45 tons/year. Depreciation value has reduced the rents value received by fishermen. With the method of the present value, the revenues from the market at discount rate of 15% should be Rp 274.97 billion. However, due to depreciation, the amount received just Rp 118.59 billion only. For the optimal and sustainable fisheries management, the effort level for small pelagic capture should be 5,342 trips/year at discount rate of 15%. To maintain the sustainability, the level should be lowered down around 46% from the present level in small pelagic management. Keywords : Sangihe archipelago, CYP, MAPLE, development of the small pelagic fishes

EVALUASI KUALITAS AIR SUNGAI-SUNGAI DI KAWASAN DAS BRANTAS HULU MALANG DALAM KAITANNYA DENGAN TATA GUNA LAHAN DAN AKTIVITAS MASYARAKAT DI SEKITARNYA Elvi Yetti; Dedi Soedharma; Sigid Hariyadi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 1 No. 1 (2011): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.1.1.10

Brantas River that is located at Upper Brantas River Basin Area has been polluting that is noted by poluttion that taking place at Karangkates and Sengguruh Reservoir. Development of people and industries around Malang Upper Brantas River Basin Area since 2000, leading to increasing of river water using and pollution, particularly organic pollution. This research evaluated river water quality at Malang Upper Brantas River Basin Area, refered to water quality standard inserted on Governmental Regulation Number 82 / 2001 (PP No. 82 tahun 2001) and observed its relation to land use system and its surrounding people activity. Water quality is observed at 18 station focusing on physical parameters such as temperature, conductivity, suspended solid, and chemical parameters such as pH, DO, BOD, COD, N-nitrate, total nitrogen, orthophosphate and total phosphorous. Furthermore, water quality status is determined by using of pollution index methode, based on Environment Ministerial Regulation Number 115 / 2003 (Kep. Men. LH No. 115 tahun 2003). Evaluation result was related to land use system at Upper Brantas River Basin Area and its surroundings people activity. Evaluation result showed that, water quality has been decreasing at that area compared with the year of 1997-2002, and furthermore almost at all stations the value of COD has exceeded maximum limit threshold. Determination of water quality status also showed that all rivers at Upper Brantas River Basin has been polluted, majority with medium polutted grade. Research the result also showed that river water quality at Malang Upper Brantas River Basin is influenced by land use system and its surroundings people activity, particuarly by industries located along the river basin. Key Words: Evaluation of River Water Quality, Upper Brantas River Basin, land use system, surroundings people activity

PERENCANAAN PARIWISATA DI PULAU KERA KABUPATEN KUPANG PROVINSI NUSA TENGGARA TIMUR Ida Ayu Lochana; Dedi Soedharma; Soehartini Sekartjakrarini
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 1 No. 1 (2011): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.1.1.31

Tourism is one of development sector that can develop in the small Island. Kera Island is a part of Kupang Bay Natural Sea Tour in Nusa Tenggara Province. Tourism planning in Kera Island is a part of suistenable development strategi which developed with ecotourism. The research had been conducted in Kera Island, Kupang Regency, NTT Province for six months (July, 2005 and February-July 2006). Aim of this researct was to know the carakteristic of Kera Island characteristic for tourism planning. The result of this research is Kera Island has potensial environment for tourism. The Coastal of Kera Island had two Plant comunities. There were pest-caprae (Ipomea pes-caprae) and Barringtonia (Barringtonia spp.), whice made six type of their assosiation. They are Ipomoea pes-caprae and Spinifex littoreus (4,56 ha), Ischaemum muticum (14,37 ha), Andropogon halepense (6,37 ha), Sterculia sp. (10,29 ha), Sesbania grandiflora (7,57 ha), and Sporobolus sp. (2,01). Some tour attraction in Kera Island are sun bathing, tracking, camping, eduacation tour, and relegius tour. According to carring capacity analized, the beach of Kera Island would visited 39-210 person for deluxe klas. Camping area and Bajo traditional house or Timor traditional house are the first acomodation alternatif in the Kera Island tourism planning. Both of camping area and traditional house would take place in Iscaemum muticum area, Sterculia sp. area, and Andropogon halepense area. The reson of its statement is small size of Kera Island (48 ha). The strategy for community development are sea weeds aquaculture programe and in formal tourism education programe. Key words: ecotourism, carring capacity, traditional house, comunnity development

ANALISIS STRUKTUR EKOSISTEM MANGROVE DI DESA KUKUPANG KECAMATAN KEPULAUAN JORONGA KABUPATEN HALMAHERA SELATAN MALUKU UTARA Nasir Haya; Neviaty P Zamani; Dedi Soedharma
Jurnal Teknologi Perikanan dan Kelautan Vol 6 No 1 (2015): MEI 2015
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Mangroves forests have adapted themselves from exposure to strong waves with high salinity. Mangroves grow on mud flats flooded with sea water or brackish water during high tide or flooded throughout the day. Kukupang village is one of the capital of the District of Jouronga Islands are located in the South Halmahera in North Maluku province. Mangrove ecosystem has grown Kukupang village life along the coast with an area of approximately 65 hectares with the condition is still very natural growth. The research was conducted in October-November 2014 Location of the study took place in mangrove ecosystem Kukupang Village District of Joronga Islands, South Halmahera in North Maluku. Transect method of determining the station square and performed by stratified random method. Data retrieval is divided into three stations measuring 10 x 10 m for trees, 5 mx 5 m for the stake, 1 x 1 m for the nursery, where elucidation of the sampling stations are divided into three stations. Based on the results of the study are six mangrove species found are: Rhizopora apiculata, Avicennia marina, Rhizophora mucronata, Sonneratia alba, Brugueraea gymnorrhiza, Ceriops tagal. Distribution pattern associated mangrove ecosystem, and the highest level of density is the type of mangrove species Rhizophora apiculata, the condition of the substrate at the location of the dominant research dust.

Co-Authors Achmad Nasir Biasane Akhmad Fauzi Daniel R. Monintja Elvi Yetti Hendrik Victor Ayhuan Ida Ayu Lochana Nasir Haya Neviaty P Zamani Neviaty P Zamani Nur Ikhsan Sigid Hariyadi Soehartini Sekartjakrarini

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