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Journal of Marine Research

jmr
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Published by Institut Pertanian Bogor

ISSN : - EISSN : 24077690 DOI : 10.14710/jmr.v9i4.28340

Core Subject : Agriculture, Social,

Agriculture, Biological Sciences & Forestry Environmental Science

The Journal of Tropical Fisheries Management is managed by the Department of Water Resource Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University aims to publish the results of basic, applied research in the scope of fisheries resources, fish stock studies, and population dynamics, fish biodiversity, fisheries technology, industrialization and fish trade, fisheries management, and fisheries development policies in the tropics, especially Indonesia. The scope of the area includes: Marine Fisheries Coastal Fisheries Inland Fisheries The focus and scope of this publication are expected to contribute thoughts for the government to strengthen the science of fisheries management

Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)

Articles 608 Documents

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STUDI KESESUAIAN DAN DAYA DUKUNG KAWASAN UNTUK REKREASI PANTAI DI PANTAI PANJANG KOTA BENGKULU Himavan Prathista Nugraha; Agus Indarjo; Muhammad Helmi
Journal of Marine Research Vol 2, No 2 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

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.

Morfometri Dan Hubungan Panjang Berat Kerang Hijau (Perna veridis) dari Perairan Tambak Lorok, Semarang Dan Morosari, Demak, Jawa Tengah Jufri Ubay; Retno Hartati; Sri Redjeki
Journal of Marine Research Vol 10, No 4 (2021): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Kerang Hijau (Perna viridis) adalah salah satu spesies dari kelas Bivalvia yang banyak ditemukan di perairan Tambak Lorok, Semarang dan di perairan Morosari, Demak, sehingga menjadi salah satu sumber pendapatan masyarakat di daerah tersebut. Tujuan dari penelitian ini adalah melakukan pengukuran morfomeri kerang hijau, mengetahui pertumbuhan dan indeks kondisi populasi kerang hijau (P. viridis) di kedua prairan tersebut. Sebanyak 50 individu kerang hijau diambil dari lokasi penelitian pada bulan Desember 2020, Januari 2021 dan Februari 2021. Hasil pengukuran morfometri menunjukkan bahwa selama penelitian, populasi kerang hijau di kedua lokasi terdiri dari satu kelompok ukuran, dengan puncak kelas ukuran yang bergeser ke kanan yang menunjukkan adanya pertumbuhan. Hubungan panjang dan berat kerang hijau menunjukkan kisaran nilai b 2,22-2,27 dan 1,0-2,5 berturut-turut di perairan Tambak Lorok dan Morosari dan pertumbuhannya bersifat alometri negatif, dengan nilai ƿ berkisar 0,76-0,88 (korelasi positif kuat) di perairan Tambak Lorok dan 0,33-0,80 (korelasi lemah sampai kuat) di perairan Morosari. Nilai indeks kondisi kerang hijau di Perairan Tambak Lorok dan Morosari sebesar 36,89-47,91 yang menunjukkan kondisi yang sedang. Dari data morfometri nampak adanya rekruitmen dari proses reproduksi dan mortalitas karena penangkapan pada populasi kerang hijau di kedua lokasi penelitian. Green mussel (Perna viridis) is one of the species from the class Bivalvia which is commonly found in the waters of Tambak Lorok, Semarang and Morosari, Demak, so that it becomes a source of income for the coastal communities in those area. The purpose of this study was to measure the morphometry of green mussels, to determine the growth and condition index of the population of green mussels (P. viridis) in the waters of Tambak Lorok, Semarang and Morosari, Demak. A total of 50 green mussels were taken from the study sites in December 2020, January 2021 and February 2021. The results of morphometric measurements showed that during the study, the green mussel population in both locations consisted of one size group, with the size class peaks shifting to the right indicating growth. The relationship between length and weight of green mussels showed a range of b values of 2.22-2.27 and 1.0-2.5 respectively in Tambak Lorok and Morosari waters and the growth was negative allometric, with correlation values ranging from 0,76-0.88 (strong positive correlation) in Tambak Lorok waters and 0.33-0.80 (weak to strong correlation) in Morosari waters. The condition index value of green mussels in Tambak Lorok and Morosari waters is 36.89-47.91 which indicates moderate conditions. From the morphometry data, it appears that there is a recruitment process and mortality due to capture in the green mussel population in both research locations.

Uji Resistensi Bakteri Karang Galaxea sp. dan Porites sp. terhadap Pestisida Triazofos Muhammad Eka Darmawan Rafsanjani; Agus Sabdono; Ali Djunaedi
Journal of Marine Research Vol 9, No 2 (2020): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

ABSTRAK: Kerusakan terumbu karang merupakan permasalahan serius di laut saat ini. Kerusakan tersebut disebabkan oleh beberapa faktor salah satunya penggunaan pestisida. Salah satu jenis pestisida yang digunakan para petani yaitu pestisida triazofos. Penggunaan pestisida triazofos di sektor pertanian akan meninggalkan residu dan terbawa ke perairan melalui sungai dan saluran air. Residu pestisida triazofos diduga dapat menyebabkan kerusakan ekosistem terumbu karang. Tujuan dari penelitian yaitu untuk mengetahui potensi resistensi karang Porites sp. dan Galaxea sp. terhadap pestisida triazofos dari Perairan Pulau Panjang, Jepara. Metode yang digunakan untuk pengambilan sampel adalah purposive sampling method, untuk memperoleh isolat bakteri yang berasosiasi dengan karang Porites sp. dan Galaxea sp., dan metode experimental laboratoris untuk uji resistensi isolat bakteri. Kurva regresi larutan standar dengan persamaan y = 0,0057x + 0,1088 dipakai untuk menentukan konsentrasi pestisida triazofos. Nilai R² menunjukkan angka 0,8694 yang berarti secara umum data yang dihasilkan mempunyai validasi data yang baik. Konsentrasi pestisida triazofos digunakan dalam uji degradasi oleh bakteri sebesar 50 ppm. Nilai absorbansi yang dihasilkan sebanyak 0,5285. Hasil uji menunjukkan seluruh isolat yang digunakan bersifat resisten terhadap pestisida triazofos yaitu PPP 11, PPP 9, GPP 6, PPP 1, GPP 7, GPP 4. Isolat PPP 11 memiliki persen degradasi tertinggi sebanyak 99,67%, GPP 4 memiliki persen degradasi terenddah sebanyak 34,34%. Disimpulkan bahwa isolat bakteri asosiasi karang Porites sp. dan Galaxea sp. memiliki resistnesi terhadap pestisida triazofos. ABSTRACT: Damage to coral reefs is a serious problem at sea at this time. The damage is caused by several factors, one of which is the use of pesticides. One type of pesticide used by farmers is the triazophos pesticide. The use of triazophos pesticides in the agricultural sector will leave residues and be carried into the waters through rivers and waterways. Triazophos pesticide residues are thought to cause damage to coral reef ecosystems. The purpose of this study is to determine the potential of coral resistance Porites sp. and Galaxea sp. against triazofos pesticides from Panjang Island waters, Jepara. The method used for sampling is purposive sampling method, to obtain bacterial isolates associated with Porites sp. and Galaxea sp., and spectrophotometric methods for testing bacterial isolate resistance. Standard solution regression curves with the equation y = 0.0057x+ 0.1088 are used to determine the concentration of the triazophos pesticide. R² value indicates the number 0.8694 which means that in general the data generated has good data validation. The concentration of the triazofos pesticide used in the bacterial degradation test was 50 ppm. The absorbance value produced was 0.5285. The test results showed that all isolates used were resistant to triazophos pesticides namely PPP 11, PPP 9, GPP 6, PPP 1, GPP 7, GPP 4. PPP 11 isolates had the highest degradation percentages of 99.67%, GPP 4 had the lowest degradation percentages 34.34%. It was concluded that the bacterial isolates of Porites sp. and Galaxea sp. has triazofos pesticide resistance.

Tingkat Herbivori Daun Mangrove Avicennia marina (Forssk.) Vierh. Dan Rhizophora mucronata Di Desa Kaliwlingi, Kecamatan Brebes, Kabupaten Brebes, Jawa Tengah Eva Widayanti Widayanti; Nirwani Soenardjo Soenardjo; Raden Ario Ario
Journal of Marine Research Vol 8, No 1 (2019): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Herbivori pada daun mangrove merupakan salah satu faktor penyebab berkurangnya luasan daun mangrove sehingga daerah fotosintesis menjadi berkurang dan akan mempengaruhi kondisi tanaman mangrove secara keseluruhan. Tujuan dari penelitian ini yaitu mengetahui tingkat herbivori daun Avicennia marina dan Rhizophora mucronata berdasarkan spesies, umur daun dan tinggi pohon di Desa Kaliwlingi, Kecamatan Brebes, Kabupaten Brebes. Penelitian ini dilakukan pada bulan Juni–Desember 2018. Metode yang digunakan dalam penelitian ini adalah metode deskriptif, sedangkan dalam penentuan lokasi pengambilan sampel dilakukan dengan metode purposive. Sampel daun dari spesies Avicennia marina dan Rhizophora mucronata diambil dari tiga kategori tinggi tanaman yang berbeda, yaitu: <1 m, 1–<3 m, dan 3–5 m, masing–masing sebanyak 10 pohon sebagai ulangan. Daun dipisahkan berdasarkan umur daun (muda dan tua) dan kondisi daun (utuh dan tua). Total daun yang diambil masing–masing 10% dari setiap pohon. Berdasarkan hasil penelitian, menunjukkan rerata nilai setiap spesies, umur daun dan tinggi pohon didapatkan tingkat herbivori pada A. marina yaitu 7,36% kisaran (0,10-29,36%) sampai dengan 13,26% kisaran (0,06-48,46%) sedangkan pada R. mucronata yaitu 5,93% kisaran (0,23-21,59%) sampai dengan 19,69% kisaran (1,10-47,06%). Herbivory in mangrove leaves is one of the factors causing reduced area of mangrove leaves so that the photosynthetic area becomes reduced and will affect the condition of the mangrove as a whole. The research is aiming to find out the herbivory level of herbivory Avicennia marina and Rhizophora mucronata based on the species, age, and the tree-height in Kaliwlingi Village, Brebes District, Brebes. The research is conducted in June–December 2018. The methodology is descriptive method, while the sample location decided with purposive method. The leaf sample from Avicennia marina and Rhizophora mucronata is taken from three different high-categorized plants there are: <1 m, 1-<3 m and 3–5 m, with 10 trees for each categories as the repetition. The leaf differs based on the ages of leaf (young leaf and old leaf), and the completion of the leaf condition. It takes 10% from each trees in total. The result show the average value of each spesies, age and the tree-height, it is obtained the herbivory level from A. marina is 7,36% in range (0,10-29,36%) till 13,36% in range (0,06-48,46%) while from R.mucronata is 5,93% in range (0,23-21, 59%) till 19,69% in range (1,10-47,06%).

Studi Kebiasaan Makanan Ikan Layur (Trichiurus lepturus) di Perairan Pantai Bandengan Kabupaten Jepara dan di Perairan Tawang Weleri Kabupaten Kendal Zaenal Abidin; Sri Redjeki; Ambariyanto Ambariyanto
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Ribbonfish as demersal fish which is one of export commodity and can be found in Java coasts and estuaries in Sumatra. This research aims to determine the food habits of ribbonfish (Trichiurus lepturus) by analyzing the types of food found in the stomach of the fish collected from coastal area of Bandengan, Jepara Regency and the waters of Tawang, Kendal, both in Central Java Province. Food habits of fish was determined by stomach content analysis. The result indicates that food type of ribbonfish (T. lepturus) from Bandengan, Jepara, mostly were anchovies, long-jawed mackarel and white snappers. While food type of fish from Tawang, Kendal, mostly were ponyfish, followed by longjawed mackarel, and anchovies. The difference of food habits probably due to biotic condition environmental differences and like temperature, light, space and surface area.

Asosiasi Gastropoda dengan Lamun di Perairan Teluk Awur dan Pulau Panjang, Jepara Aldi Rivaldy Maulana; Widianingsih Widianingsih; Ita Widowati
Journal of Marine Research Vol 11, No 1 (2022): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Gastropoda adalah salah satu biota yang dapat berasosiasi dengan lamun. Kondisi padang lamun pada kedua lokasi akan mempengaruhi tingkat kerapatan dan kelimpahan biota yang berada di perairan. Penelitian ini bertujuan untuk mengetahui tingkat kerapatan lamun yang berbeda dan kelimpahan gastropoda serta hubungan antara tingkat kerapatan lamun yang berbeda dengan kelimpahan gastropoda. Pelaksanaan penelitian ini dilakukan pada bulan Mei dan Agustus 2020 di Perairan Teluk Awur dan Pulau Panjang, Jepara. Metode yang digunakan dalam penelitian ini adalah studi kasus yang bersifat deskriptif berdasarkan 3 kerapatan yang berbeda, yaitu kerapatan jarang, sedang, dan padat. Hasil penelitian menunjukkan terdapat 4 jenis lamun di Perairan Teluk Awur dan 5 jenis lamun di Perairan Pulau Panjang, yaitu Enhalus acoroides, Thalassia hempricii, Cymodocea serrulata dan Cymodocea rotundata dan Halophila ovalis. Kelimpahan gastropoda di kerapatan lamun jarang, sedang, dan padat di Teluk Awur adalah 67,5 ind/m², 97 ind/m² dan 10,5 ind/m², sedangkan kelimpahan gastropoda di kerapatan lamun jarang, sedang, dan padat di Pulau Panjang adalah 96 ind/m², 97,5 ind/m² dan 336,5 ind/m². Berdasarkan hasil regeresi menunjukkan antara kelimpahan gastropoda dengan kerapatan lamun terdapat korelasi yang erat, sehingga semakin tinggi kerapatan lamun akan diikuti oleh tingginya kelimpahan gastropoda. Seagrass beds are one of the marine ecosystems located in coastal areas and have an important role in the waters. Gastropods are one of the biota associated with seagrass beds. The conditions of the seagrass beds in both locations will affect the density and abundance of biota in the waters. This study aims to determine the different levels of seagrass density and abundance of gastropods and the relationship between different seagrass density levels and the abundance of gastropods. This research was carried out in May and August 2020 in the waters of Teluk Awur and Panjang Island, Jepara. The method used in this research is a descriptive case study based on 3 different densities, namely rare, medium, and dense. The research steps taken were sampling, identification, data analysis and data evaluation. The results showed that there were 4 types of seagrass in Teluk Awur waters and 5 types of seagrass in Panjang Island waters, namely Enhalus acoroides, Thalassia hempricii, Cymodocea serrulata and Cymodocea rotundata and Halophila ovalis. The abundance of gastropods in the rare, medium, and dense seagrass density in Awur 67,5 ind/m², 97 ind/m² dan 10,5 ind/m², while the abundance of gastropods in the rare, medium and dense seagrass density in Panjang Island was 96 ind/m², 97,5 ind/m² dan 336,5 ind/m². Based on the regression results, there is a strong correlation between gastropod abundance and seagrass density, so that the higher the seagrass density will be followed by the higher gastropod abundance.

Analisa Distribusi Spasial Vegetasi Mangrove di Desa Pantai Mekar Kecamatan Muara Gembong Abdul Faqih Hanan; Ibnu Pratikto; Nirwani Soenardjo
Journal of Marine Research Vol 9, No 3 (2020): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Mangrove merupakan vegetasi yang tumbuh di wilayah pesisir dengan kemampuan beradaptasi baik secara morfologi dan fisiologi terhadap lingkungan. Ekosistem mangrove memiliki beragam peran diantaranya peranan ekologi, ekonomi dan sosial budaya. Penyusutan luas hutan mangrove yang terjadi di Kecamatan Muara Gembong menyebabkan penurunan kualitas ekosistem mangrove. Kegiatan rehabilitasi tidak berjalan secara maksimal akibat belum tersedianya peta tematik mangrove untuk menunjang kegiatan penanaman mangrove di wilayah Desa Pantai Mekar yang merupakan salah satu desa di wilayah Kecamatan Muara Gembong. Tujuan penelitian ini menganalisis sebaran mangrove, luas vegetasi mangrove dan persentase kategori tutupan vegetasi mangrove melalui pendekatan penginderaan jauh dan validasi lapangan. Citra yang digunakan pada penelitian ini yaitu citra satelit Sentinel 2A. Metode penginderaan jauh yang digunakan untuk mengetahui sebaran mangrove dengan perpaduan composite band dan supervised classification sedangkan untuk luas vegetasi mangrove dan persentase tutupan vegetasi mangrove menggunakan metode Normalized Difference Vegetation Index (NDVI). Metode validasi lapangan untuk tutupan vegetasi mangrove menggunakan hemispherical photography. Hasil penelitian menunjukan sebaran vegetasi mangrove di Desa Pantai Mekar tersebar di daerah ekowisata, wilayah sekitar sungai, daerah muara sungai, bekas tambak dan sekitar tambak dengan luas hutan mangrove sebesar 377,06 ha. Klasifikasi tutupan vegetasi mangrove terdiri dari 81,53 ha (21,62 %) kategori mangrove padat, 77,11 ha (20,45 %) kategori mangrove sedang dan 218,42 ha (57,93 %) kategori mangrove jarang. Mangrove is a tropical coastal vegetation that has the ability to adapt well morphologically and physiologically in the environment. Mangrove ecosystems have various of functions, including ecological, economical, and socio-culture functions. The extensive depreciation of mangrove forests that occurred in the District of Muara Gembong caused a decrease in the quality of the mangrove ecosystem. The rehabilitation activities have not run optimally, because there have not been any thematic maps to support mangrove planting activities in the Pantai Mekar Village area which is one of the villages in the Muara Gembong Subdistrict area. The purpose of this study is to analyze the distribution of mangroves, mangrove vegetation area and percentage of mangrove vegetation cover categories through remote sensing approach and field validation. The image used in this study is the Sentinel 2A satellite image. Remote sensing method used to determine the distribution of mangroves with a combination of composite band and supervised classification, while for the area of mangrove vegetation and the percentage of mangrove vegetation cover using the Normalized Difference Vegetation Index (NDVI). The field validation method for the mangrove vegetation cover uses hemispherical photography. The results showed that the distribution of the mangrove vegetation in Desa Pantai Mekar spread over the ecotourism areas, watershed, river estuaries, and aquaculture ponds with a total area of 377,06 hectares. The area is consisted of 81,53 hectares (21,62%) dense forest, 77,11 hectares (20,45%) medium dense forest, and 218,42 hectares (57,93%) sparse forest.

Morfometri Octopus vulgaris Cuvier, 1797 (Cephalopoda : Octopodidae) dari Perairan Popisi, Pulau Banggai Laut, Sulawesi Tengah Inggrid Debora Hutagaol; Sri Redjeki; Endang Sri Susilo
Journal of Marine Research Vol 8, No 2 (2019): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Penting adanya informasi dasar tentang gurita dari perairan Indonesia untuk memperbesar pengelolahan dan pelestarian potensi laut Indonesia. Secara historis dibeberapa negara telah mengalami penurunan hasil tangkap gurita dalam beberapa tahun. Tujuan dari diadakannya penelitian ini adalah untuk melihat morfometri pada gurita vulgaris (Octopus vulgaris) dari Perairan Desa Popisi, Pulau Banggai Laut, Sulawesi Tengah dengan parameter panjang mantel, panjang lengan, berat, dan jenis kelamin. Sampel ditangkap oleh nelayan dengan alat pancing sederhana pada kedalaman 10-30 m dari perairan Banggai Laut. Gurita dibagi kedalam 4 kategori berdasarkan berat yang digunakan pengepul, yaitu kategori A, B, C, D. Gurita dari Desa Popisi pada bulan Maret 2018 dalam ukuran yang baik untuk di jual dan di ekspor, yaitu 87% gurita hasil tangkapan berukuran besar dengan kategori A, B, dan C. Pulau Banggai Laut menjadi salah satu wilayah yang masih baik dalam penangkapan gurita karena penangkapan yang konservatif. It is important to have basic information about octopus from Indonesian waters to enlarge the management and preservation of Indonesia's marine potential. Historically, in some countries, there has been a decline in octopus capture results in several years. The purpose of this study was to look at morphometry in octopus vulgaris (Octopus vulgaris) from the waters of Popisi Village, Banggai Laut Island, Central Sulawesi with parameters of mantle length, arm length, weight, and sex. The sample was captured by fishermen with a simple fishing rod at a depth of 10-30 m from the waters of Banggai Laut. Octopus is divided into 4 categories based on the weight used by collectors, namely categories A, B, C, D. Octopus from Popisi Village in March 2018 in a good size to sell and export, namely 87% large-sized octopus with categories A, B, and C. Banggai Laut Island is one of the areas that is still good in capturing octopuses due to conservative arrests.

Studi Akumulasi Logam Tembaga (Cu) dan Efeknya terhadap Struktur Akar Mangrove (Rhizophora mucronata) Irwan Dedy; Adi Santoso; Irwani Irwani
Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Copper metal (Cu) is one of the heavy metals that can contaminate the environment, especially water. Cu is a heavy metal which is harmful to human health, but Cu is also needed in our life as trace elements. This study aimed to determine the effect of Cu contaminants with different concentrations on the root structure of the mangrove seedlings Rhizophora mucronata for 30 days of observation. Rhizophora mucronata is taken from Tapak village, Tugu, Semarang, Central Java. The research was carried out from June to August 2012 at the Marine Science Campus of Diponegoro University Semarang. A laboratory experiment research was conducted on the effect of different Cu concentrationt (20, 100 and 500 ppm) and different exposure material (10, 20 and 30 days) on the root structure of mangrove Rhizophora mucronata. Root structure using microscopy observations performed at the Laboratory of Plant Faculty of Science and Mathematics, Diponegoro University. The result demonstrated that the root of epidermis, cortex, endodermis, xylem and phloem had no effect on their structure after exposure to concentration of Cu of 20, 100 and 500 ppm since there were not change on their shape compared to the control.

Makroalga Yang Berasosiasi dengan Ekosistem Lamun di Perairan Teluk Awur dan Bandengan, Jepara, Jawa Tengah Dimpos Jonathan Sianipar; Bambang Yulianto; Ita Riniatsih
Journal of Marine Research Vol 11, No 2 (2022): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Makroalga merupakan salah satu organisme laut yang memiliki peranan penting dalam mempertahankan keseimbangan ekosistem laut dangkal dan merupakan tumbuhan yang dapat hidup beraosiasi dengan ekosistem lamun. Tujuan pengamatan dilakukan untuk mengetahui jenis makroalgae, kandungan nitrat dan fosfat pada air serta hubungannya terhadap tutupan makroalga di padang lamun Teluk Awur dan Pantai Bandengan, Jepara. Data persentase tutupan makroalaga dan lamun diambil menggunakan metode transek kuadran (0,5 x 0,5 m). Analisis kandungan nitrat menggunakan metode yaitu SNI 06-6989.31-2005 dan fosfat IK-BP2-MU-A-08. Hasil penelitian menunjukkan tutupan makroalagae di Pantai Bandengan yaitu 8,47% tergolong pada kategori sedikit, dibandingkan dengan Teluk Awur yaitu 42,87% tergolong kategori melimpah. Kandungan nitrat dan fosfat rata-rata pada air di Teluk Awur adalah 3,26 ppm dan 0,39 ppm, sedangkan kandungan nitrat dan fosfat pada air di Pantai Bandengan adalah 3,69 ppm dan 0,37 ppm. Analisis regresi korelasi menunjukan kandungan nitrat dan fosfat pada air terhadap persentase tutupan makroalga di Teluk Awur menunjukan kuat positif sedangkan fosfat tidak linear, sedangkan di Pantai Bandengan memiliki hubungan positif sedang untuk nitrat dan positif rendah untuk fosfat.Macroalgae are plants that can live in association with seagrass ecosystems.. This research was conducted on 8-9 November 2020 which aims to determine the types of macroalgae, nitrate and phosphate content in water and their relationship to macroalgae cover in the seagrass beds of Teluk Awur and Bandengan Beach, Jepara. Data on the percentage of macroalage cover in seagrass beds refers to the line transeck quadratic method from LIPI. The method used to analyze the nitrate content is SNI 06-6989.31-2005 and phosphate IK-BP2-MU-A-08. Data analysis using Pearson-correlation analysis method. The results showed that the macroalgae cover in Prawean Beach was 8.47% classified in the low category, compared to Teluk Awur, which was 42.87% classified in the abundant category. The average nitrate and phosphate content in the water in Teluk Awur is 3.26 and 0.39 ppm, while the nitrate and phosphate content in the water at Bandengan Beach is 3.69 and 0.37 ppm. Regression analysis showed that the nitrate and phosphate content in the water to the percentage of macroalgae cover in Teluk Awur showed a strong positive while phosphate was moderately negative, while in Bandengan Beach there was a moderate positive relationship for nitrate and low positive for phosphate.

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Munirah Tuli

Contact Email
munirahtuli@ung.ac.id

Phone
+6281294614208

Journal Mail Official
jppt@apps.ipb.ac.id

Editorial Address
-

Location
Kota bogor,

Jawa barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Munirah Tuli

Contact Email munirahtuli@ung.ac.id

Phone +6281294614208

Journal Mail Official jppt@apps.ipb.ac.id

Editorial Address -

Location Kota bogor, Jawa barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Munirah Tuli

Contact Email
munirahtuli@ung.ac.id

Phone
+6281294614208

Journal Mail Official
jppt@apps.ipb.ac.id

Editorial Address
-

Location
Kota bogor,

Jawa barat

INDONESIA