Agus Indarjo
Jurusan Ilmu Kelautan, FPIK, Universitas Diponegoro Semarang
Articles
9
Documents
Distribusi dan Kelimpahan Polychaeta di Kawasan Hutan Mangrove Klaces dan Sapuregel, Segara Anakan, Cilacap

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Tingginya produktivitas mangrove menjadikan hutan mangrove memiliki fungsi ekologis yang pentingbagi makhluk hidup, yaitu sebagai tempat memijah, pembesaran dan mencari makan. Biota yang hiduppada ekosistem mangrove antara lain ikan, udang, kepiting, moluska dan polychaeta. Tujuan penelitian ini adalah untuk mengetahui distribusi dan kelimpahan polychaeta di daerah Klaces dan Sapuregel yang memiliki perbedaan tingkat sedimentasi. Hasil penelitian telah ditemukan 20 famili polychaeta, 5 famili di Klaces dengan kelimpahan 44,68 ind/ m2 dan 17 famili di Sapuregel dengan kelimpahan 88,38 ind/m2. Biomassa untuk 4 famili yang dominan di kedua lokasi penelitian tidak memiliki perbedaan yang signifikan kecuali pada famili Capitellidae yaitu 0,026 g/ind di Klaces dan di Sapuregel 0,012 g/ind. Indeks  keanekaragaman (H’) di Klaces dan Sapuregel masing-masing adalah 0,49 (keanekaragaman famili rendah) dan 1,11 (keanekaragaman famili sedang), serta indeks keragamannya (e) 0,27 dan 0,30 (keseragamanfamili rendah). Indeks dominasi (C) di Klaces 0,64 (terdapat famili yang mendominasi) lebih besar dariSapuregel yaitu 0,33(tidak terdapat famili yang mendominasi).Kata kunci : polychaeta, distribusi, kelimpahan, mangroveThe high productivity in mangrove area has ecological function which is important for other living organisms, among others is for spawning area, nursery and feeding area. The biota which is live in mangrove ecological system are fish, shrimp, crab, mollusc, and polychaeta. The objective of this research is to look for the distribution and abundance of polychaeta in Klaces and Sapuregel area where are have difference sedimentation level. Twenty polychaeta families were found in this research, 5 families in Klaces and 17 families in Sapuregel. Abundance of polychaeta in Klaces was 44,68 ind/m2, this was fewer than in Sapuregel. The biomass for 4 families which was dominant in two research area were not have significant different, except Capitellidae. Biomass Capitellidae was 0,026 g/ind in Klaces and 0,012 g/ind in Sapuregel. Diversity Index (H’) in each research area Klaces and Sapuregel were 0,49 (low diversitylevel) and 1,11 (moderate diversity level) with evenness index (e) 0,27 and 0,3 (low evenness indexlevel). Domination index (C) in Klaces was 0,64 and in Sapuregel was 0,23. This value shows thatdomination index Klaces was more than Sapuregel.Key words : polychaeta, distribution, abundance, mangrove

Kondisi Terumbu Karang di Perairan Pulau Panjang Jepara

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Kondisi terumbu karang di Pulau Panjang telah mengalami ancaman dari aktivitas manusia di daratan Pulau Jawa. Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang di perairan Pulau Panjang. Hasilpenelitian menunjukkan bahwa kondisi terumbu karang di Pulau Panjang dalam tingkatan sedang hingga buruk/rusak. Sebagian dari jumlah stasiun-stasiun di kedalaman 3 meter dalam kondisi sedang, sebagianlainnya dalam kondisi buruk/rusak. Sedangkan semua stasiun di kedalaman 7 meter dalam kondisi buruk/ rusak. Indeks keanekaragaman jenis tergolong sedang yaitu 1,277 – 2,879, dan Indeks dominansi berkisar antara 0,065 – 0,338.Kata kunci : terumbu karang, Pulau Panjang, struktur komunitasThe increasing human activities in Java Island has lead decraising of coral reef conditions in Panjang Island. The purpose of the reseach was to investigate the conditions of coral reef in Panjang Island waters. Theresult show that the coral reef in Panjang Island tended to be at bad level condition. In the three meters deep on some stations tended at medium level conditoin and some of them tended at bad level condition. But, in the seven meters deep on all stations tended at bad level condition. The diversity indeks showed medium category that are between 1,277 – 2,879 and Indeks of domination showed between 0,065 – 0,338Key words : Coral reef, Panjang Island, Communty structure

STUDI KESESUAIAN DAN DAYA DUKUNG KAWASAN UNTUK REKREASI PANTAI DI PANTAI PANJANG KOTA BENGKULU

Journal of Marine Research Vol 2, No 2 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

resort in the Panjang Beach area. One form of the beach tourism is the beach recreation activities. However, in its efforts to the development of tourism in Panjang Beach needed to be identified and approaches the problems first. The most fundamental and the goal of this research is to conduct a study on the level of suitability and carrying capacity of the Panjang Beach coast primarily for recreational activities. Research carried out by field observations (collecting primary data and secondary data) for 2 months in July 2012 until August 2012 at the Panjang Beach city of Bengkulu, which is divided into seven-point sampling locations from the south up to the north shore. Collecting primary data consist of physics and chemistry sea water data and suitability parameters of beach recreation, such as type of beach, width of the beach, slope of the beach, brightness of sea water, current velocity, water depth, water base material, beach land cover, presence of harmful organism and availability of fresh water. The method used to analyze the results of the research is descriptive method with the help of Tourism Suitability Index analysis and the carrying capacity of Regions that generate value and suitability of the tourist carrying capacity. Based on the results obtained from the calculation of tourism suitability index for coastal recreation activities are mostly above 80%. This indicates that the coastal areas of Bengkulu City, Panjang Beach classified in the category of Highly Suitable (S1) for coastal recreation activities. While the value Capability Area of the Panjang Beach approximately 42.045 people per day.

STUDI KESESUAIAN PERAIRAN UNTUK EKOWISATA DIVING DAN SNORKELING DI PERAIRAN PULAU KERAMAT, KEBUPATEN SUMBAWA PROVINSI NUSA TENGGARA BARAT

Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Keramat Island is an uninhabited island and one of the favored tourism area in Sumbawa which has considerable potential as a tourist area with beautiful and unspoiled natural scenery, away from the activities surrounding communities, with a white sandy expanse full of flora and fauna and the pollution level is very small.The research was conducted in the waters of Keramat Island, Sumbawa district on September - November 2011 with the aim to determine the potential that exists in the waters of Keramat Island and assess the suitability of Keramat Island waters as diving and snorkeling ecotourism.The method used in this research is descriptive exploratory method. The analysis used in this study is an analysis of the water suitability, that is by comparing the characteristics and quality of the waters with the land usage requirements for certain tourist activities.Results of the study showed that the Keramat Island waters has a good potential for Diving and Snorkeling with the potential for the highest live coral reefs 84.15% and the lowest 38%, 5-11 Life form coral and various fish species are 40-127 species. The greater the percentage of coral reefs in the waters, the greater the species of fish and coral life form. Diving suitability of Keramat Island waters is in the S1 category (very appropriate) with IKW at Station 1-6 ranged between 90-100% and the snorkeling suitability of Keramat Island waters is in the S1 category (very appropriate) with IKW at Station 7-12 of 100%.

Studi Kesesuaian Wisata dan Mutu Air Laut untuk Ekowisata Rekreasi Pantai di Pantai Maron Kota Semarang

Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Semarang as nautical city has tourism recreation of them is Maron beach. The recent problem is, Maron beach has great potential in nautical tourism, while management have not done optimally. The developing of tourism in Semarang need to be implemented by developing design which is more emphasizes of quality than quantity to be based on the potential and growing problem. The purposes of the study are to determine assess the suitability of Land and Water Quality for Marine Ecotourism in Coastal Recreation Maron Semarang. Research conducted in April 2012-January 2013. The objective method used in this research is a case study conducted explorative. Analyzing data is used index conformity Tourism and Water Quality Standard Marine for Marine Tourism in appropriate with the Policy of the Minister of Environment Number 51 of 2004 as soon as Index Environmental Water Quality. The results show that the calculation of index suitability travel beach recreation activities is 66%. This indicates that the coastal Maron Beach Semarang classified in the category Match (S2). While the value of Index Environmental Water Quality as much as 31.1 for category as bad category.

Kajian Kesesuaian dan Daya Dukung Wilayah Pesisir Pantai Bandengan Jepara, sebagai Upaya Optimalisasi Pengembangan Kegiatan Wisata Bahari

Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Bandengan Beach is quite famous and become mainstay Jepara Regency until be destination is quite popular, not only for Jepara people but also majority Central Java People. Nowadays, tourism activities in Bandengan Beach very limited recreation, enjoy to the landscape beach, and swimming. While still many potential area not yet be used maximum. This Study intend to assign suitable location for development marine tourism activity, know extents area development and capacity unit area that intended of tourism activity water sports. The Research results represent that tourism activities in Bandengan Beach Jepara Regency potential to be developed tourism especially water sports. Suitable location is 200 m from the shoreline towards middle sea at depth of > 5 meters. This area has a category S1 (very suitable) with values IKW 87.50 %. Tourism activities that can be developed among others, Flying Fish and Rolling Donuts in addition to existing tourist activities in advance Jet Ski and Banana Boat. The area that can be used is 74.000 m2 around 7.4 hectares and has a capacity of maximum expected around 148 person Jetski and 148 person Banana Boat tourist effective daily.

Pemetaan Tingkat Kerawanan Bencana Tsunami Menggunakan Data Penginderaan Jauh di Pesisir Selatan Kabupaten Pacitan Jawa Timur

Journal of Marine Research Vol 3, No 2 (2014): Journal of Marine Research
Publisher : Program Studi Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

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Abstract

Secara geologis pesisir selatan Kabupaten Pacitan berada di jalur subduksi atau pertemuan dua lempeng besar yang saling bertumbukan, yaitu lempeng Eurasia dan lempeng Indo-Australia. Pergerakan lempeng tektonik di kawasan ini sering kali menyebabkan terjadinya gempa besar yang dapat memicu terjadinya tsunami. Penelitian ini bertujuan untuk memetakan tingkat kerawanan bencana tsunami di pesisir selatan Kabupaten Pacitan Jawa Timur.Penelitian ini dilaksanakan pada bulan Desember 2012 sampai Maret  2013 di kawasan Pesisir selatan Kabupaten Pacitan. Metode penelitian yang digunakan adalah studi kasus dengan mengkaji tentang tingkat kerawanan tsunami yang diakibatkan oleh gempa bumi didasar laut.Hasil penelitian menunjukan peta kerawanan wilayah tsunami yang terdiri dari lima kelas, antara lain kelas sangat rawan dengan total luas 681,36 Ha atau 0,86%. Kelas rawan dengan total luas 2403,80 Ha atau 3,05%. Kelas agak rawan memiliki luas area 7678,00 Ha atau 9,75%. Kelas aman memiliki luas area 46074,48 Ha atau 58,54% dan Kelas sangat aman memiliki luas area 21854,30 Ha atau 27,77%.

Studi Kesesuaian Wisata Untuk Wisata Rekreasi Pantai Dan Mutu Air Laut Di Pantai Empu Rancak Kabupaten Jepara

977-2407769
Publisher : Program Studi Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

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Abstract

Pemanfaatan sumberdaya pesisir dan laut di Kabupaten Jepara dapat berupa pengembangan wisata pantai dalam hal ini di wilayah Pantai Empu Rancak. Salah satu bentuk wisata pantai adalah kegiatan rekreasi pantai. Namun, dalam melakukan upaya pengembangan wisata di Pantai Empu Rancak perlu diadakan identifikasi dan pendekatan permasalahan terlebih dulu. Hal yang paling mendasar dan menjadi tujuan dari penelitian ini adalah dengan melakukan studi mengenai tingkat kesesuaian untuk kegiatan rekreasi pantai dan tingkat pencemaran yang terjadi di Pantai Empu Rancak. Penelitian dilakukan dengan observasi lapangan (pengumpulan data primer dan data sekunder) selama 1 bulan pada bulan September 2013 sampai bulan Oktober 2013 di Pantai Empu Rancak Kabupaten Jepara, yang terbagi dalam enam titik lokasi sampling dari bagian selatan hingga ke bagian utara pantai. Pengumpulan data primer terdiri dari data fisika dan kimia perairan serta parameter kesesuaian wisata rekreasi pantai, seperti tipe pantai, lebar pantai, kemiringan pantai, kecerahan perairan, kecepatan arus, kedalaman perairan, material dasar perairan, penutupan lahan pantai, keberadaan biota berbahaya dan ketersediaan air tawar.  Metode yang digunakan untuk analisis hasil penelitian adalah metode deskriptif dengan bantuan analisis Indeks Kesesuaian Wisata (IKW) dan Indeks Mutu Lingkungan Perairan ( IMLP ). Berdasarkan hasil yang didapat dari perhitungan Indeks kesesuaian wisata untuk kegiatan rekreasi pantai adalah sebagian besar diatas 80%. Hal ini menunjukkan bahwa wisata rekreasi pantai di Pantai Empu Rancak Kabupaten Jepara tergolong dalam kategori Sangat Sesuai (S1) untuk kegiatan rekreasi pantai. Sedangkan untuk mutu air laut hasil yang didapat kategori sedang

Mangrove Ecosystem Management Strategy in Maron Beach Semarang

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Management of mangrove ecosystem is an important agenda in conserving tourism spots in coastal area. This research aimed at examining the recreation activities done in mangrove ecosystem area and mangrove forest strategy in Maron Beach, Tambakharjo, Semarang Municipality. This research employed a survey approach using direct interviews and field observations. The repondent included the entire population in the research area. Samples of this study were selected using cluster random sampling technique. Data were collected by observations, interviews and document study, followed by SWOT analysis. The results showed that the opening of Maron Beach recreation area has given some negative impacts to the post-rehabilitation of mangrove ecosystems, reducing the function mangrove in protecting the shore from coastal abrasion, reducing ability of wind abrasion protection, weakening the environmental conditions, decreasing the number of visitors and decreasing the production of fish. Mangrove forest management should be progressive, which means that research should be done in poor and unsteady conditions which result allow the market to continuously expand, enlarge the market growth and maximize the progress. Through the implementation of a non-overlapping effort, this condition can be improved.