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All Journal BULETIN OSEANOGRAFI MARINA Journal of Marine Research Jurnal Kelautan Tropis Indonesian Journal of Oceanography
Ibnu Pratikto
Departemen Ilmu Kelautan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science

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Small Islands Landscape Use Mapping and Its Patches Spatial Structure Analysis at Parang Islands, Karimunjawa National Park, Indonesia Muhammad Helmi; Nurfatin Adibah; Rikha Widiaratih; Hariyadi Hariyadi; Ibnu Pratikto
Indonesian Journal of Oceanography Vol 2, No 1 (2020): Indonesian Journal of Oceanography
Publisher : University of Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.614 KB) | DOI: 10.14710/ijoce.v2i1.7300

Abstract

The results of small islands landscape ecology analyses within remote sensing science are not widely discovered on the inferential capabilities of such research. This issue presents a series of papers on the use of landscape ecology techniques to explore the landscape use and its patches spatial structure patterns. The aim of this research are to map the landscape use patches based on GeoeEye-1 high resolution satellite image and to assess its patches spatial structure. This prototype research was conducted at Parang Islands, Karimunjawa National Park that was inhabitant and used for complex anthropogenic activities long time before the national park status establish. Significant accuracy for landscape use map has done using overall accuracy, producer and user accuracy, and Kappa index methods. The analyses focus on the variation and composition of landscape use and the value of its patch spatial structure to dealing with national park policy and management.  
Simpanan Karbon Pada Tegakan Vegetasi Mangrove di Desa Pasar Banggi Rembang Nur Rahmat; Ibnu Pratikto; Chrisna Adi Suryono
Journal of Marine Research Vol 11, No 3 (2022): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v11i3.35172

Abstract

Vegetasi mangrove mempunyai kemampuan menyerap dan menyimpan gas karbon yang terdapat di atmosfer. Informasi mengenai kandungan karbon pada tegakan mangrove dapat dijadikan data dalam menunjang kegiatan pengelolaan hutan secara berkelanjutan yang dapat berperan dalam pengurangan konsentrasi CO2 di atmosfer untuk upaya mitigasi pemanasan global. Penelitian ini bertujuan untuk mengetahui simpanan karbon pada tegakan mangrove yang berada di Vegetasi Mangrove Pasar Banggi Rembang. Pengambilan data dilakukan pada plot transek ukuran 10x10 di 6 lokasi yang mewakili 3 kelas kerapatan yaitu jarang, sedang dan tinggi. Data yang diambil berupa diameter batang, jenis mangrove, dan jumlah tegakan dalam plot transek. Perhitungan simpanan karbon dilakukan menggunakan rumus alometrik. Berdasarkan hasil penelitian didapatkan total simpanan karbon pada tegakan Vegetasi Mangrove Pasar Banggi sebesar 4001.37 tonC dengan rata-rata simpanan karbon sebesar 193.47 tonC/Ha. Mangroves have the ability to absorb and stores carbon gas from the atmosphere. Information about carbon storage in mangroves can be used as data to support sustainable forest management activities that can be utilized in reducing CO2 concentrations in the atmosphere to mitigate global warming. This study aims to determine the carbon storage of mangroves in the Mangrove Vegetation on Pasar Banggi Rembang Sampling was carried out on a 10x10 m transect plot in 6 locations representing 3 density classes, that is rare, medium and high. The data taken were diameter at breast height, mangrove species, and total stands in the transect plot. Calculation of carbon storage using the allometric formula. Based on the results of the study, it was found that the total carbon storage in Magrove Vegetation on Pasar Banggi Rembang was 4001.37 tonsC with an average carbon storage of 193.47 tonsC/Ha. 
Analisa Kesehatan Mangrove di Kawasan Ujung Piring dan Teluk Awur Menggunakan Sentinel-2A Abista Ahmad Romadoni; Raden Ario; Ibnu Pratikto
Journal of Marine Research Vol 12, No 1 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i1.35040

Abstract

Ekosistem mangrove merupakan ekosistem dengan komponen sumberdaya alam meliputi bentang alam, flora, fauna, dan masyarakat sekitar dengan beragam fungsi seperti ekologis, ekonomis dan sosial. Alih fungsi lahan mangrove untuk tambak dan pemukiman yang masif dilakukan mengakibatkan kondisi mangrove di Ujung Piring dan Teluk Awur mengalami penurunan kualitas ekosistem mangrove. Informasi spasial kondisi terkini ekosistem mangrove yang belum tersedia mengakibatkan upaya pencegahan kerusakan dan konservasi ekosistem mangrove tidak berjalan maksimal. Tujuan penelitian ini adalah mengetahui sebaran, luas, dan kondisi kesehatan mangrove di kawasan Ujung Piring dan Teluk Awur menggunakan citra Sentinel 2A melalui penginderaan jauh dan validasi lapangan. Pendekatan penginderaan jauh memadukan composite band dengan supervised classification dilakukan untuk mengetahui sebaran dan metode Normalized Difference Vegetation Index (NDVI) untuk mengetahui luas dan kondisi kesehatan mangrove. Validasi lapangan menerapkan hemispherical photography untuk menganalisa tutupan kanopi mangrove di lapangan. Hasil penelitian menunjukkan mangrove kawasan Ujung Piring tersebar di area pantai, ekowisata, dan tambak. Luas mangrove di kawasan Ujung Piring sebesar 21,004 ha terdiri dari 17,519 ha (83,41%) kategori lebat; 2,527 ha (12,03%) kategori sedang; dan 0,958 ha (4,56%) kategori jarang. Mangrove kawasan Teluk Awur dapat dijumpai di area pantai, daerah konservasi mangrove, tambak, aliran sungai, pemukiman, dan lahan terbuka. Mangrove di kawasan Teluk Awur memilki luas 10,657 ha tersusun oleh 8,013 ha (75,1% kategori lebat); 0,688 ha (6,5%) kategori sedang; dan 1,956 ha (18,4%) kategori jarang.  The mangrove ecosystem contains various natural resource components including landscapes, flora, fauna, and its surrounding communities with various ecological, economic, and social functions. Massive conversion of mangrove area for ponds and settlements has reduced the ecosystem quality of mangroves in Ujung Piring and Teluk Awur. The lack or even inexistence of spatial information regarding the current condition of the mangrove ecosystem has hindered the efforts to prevent damage and conserve mangrove ecosystem from running optimally. This research sought to examine the distribution, area, and health condition of mangroves in Ujung Piring and Teluk Awur areas using Sentinel-2A imagery by means of remote sensing and field validation. The remote sensing approach combined composite bands with supervised classification to determine the distribution and the Normalized Difference Vegetation Index (NDVI) method to determine the extent and health conditions of mangroves. The field validation applied hemispherical photography to analyze mangrove canopy cover in the field. The research results revealed that the mangroves in Ujung Piring area were distributed in coastal, ecotourism, and pond areas. The mangroves in Ujung Piring area measured 21.004 ha consisting of 17.519 ha (83.41%) in the dense category; 2,527 ha (12.03%) medium category; and 0.958 ha (4.56%) in sparse category. The mangroves in Teluk Awur area were found in coastal, mangrove conservation, pond, river, settlement, and open areas. The mangroves in Teluk Awur measured 10,657 ha consisting of 8,013 ha (75.1% dense category); 0.688 ha (6.5%) medium category; and 1,956 ha (18.4%) in sparse category.
Analisis Tekstur Sedimen terhadap Kelimpahan Gastropoda di Ekosistem Mangrove Desa Pasar Banggi, Rembang Vira Meillyana Mustofa; Nirwani Soenardjo; Ibnu Pratikto
Journal of Marine Research Vol 12, No 1 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i1.35003

Abstract

Karakteristik sedimen mangrove terdiri dari fraksi pasir, lumpur dan liat. Kelimpahan gastropoda dipengaruhi oleh substrat sebagai habitat dari gastropoda, serta kandungan bahan organik yang berbeda pada tiap fraksi. Oleh karena itu, perlu dilakukan penelitian mengenai analisa tekstur sedimen terhadap kelimpahan gastropoda di kawasan mangrove Desa Pasar Banggi, Rembang, mengingat gastropoda berperan penting dalam menjaga keseimbangan ekologi ekosistem mangrove. Penelitian ini bertujuan untuk menganalisis hubungan tekstur sedimen dengan kelimpahan gastropoda di ekosistem mangrove Desa Pasar Banggi, Rembang yang dilakukan pada bulan Desember 2021. Metode penentuan lokasi sampling menggunakan metode purposive sampling pada 3 lokasi sesuai dengan kerapatan mangrove yang berbeda. Pengukuran ekosistem mangrove menggunakan transek berukuran 15x15 m, dengan 3 subplot gastropoda dalam transek 1x1 m. Hasil penelitian menunjukkan fraksi pasir , lumpur silt dan lempung clay. Genus gastropoda yang ditemukan yaitu Littoria, Nodilittorina, Cerithidea, Trochus, Cassidula dan Telescopium. Nilai rata-rata kelimpahan berkisar antara 106-346 ind/m2. Nilai indeks keanekaragaman dan indeks keseragaman termasuk kedalam kategori rendah. Nilai indeks dominansi menunjukkan adanya pola dominansi dengan pola sebaran mengelompok. Hubungan tekstur sedimen ketiga fraksi dengan kelimpahan gastropoda diperoleh nilai r=0,947–0,991 yang berkorelasi kuat. Semakin tinggi presentasi fraksi diikuti dengan kenaikan kelimpahan gastropoda.   The characteristics of mangrove sediments consists of sand, mud and clay fractions. The abundance of gastropods is influenced by the substrate as the habitat of the gastropods, as well as the different organic matter content in each fraction. Therefore, it is necessary to conduct research on sediment texture analysis of gastropods in the mangrove area of Pasar Banggi Village, Rembang, considering that gastropods are important in maintaining the balance of the mangrove ecosystem. This study aims to determine the relationship between sediment texture and gastropods in the mangrove ecosystem of Pasar Banggi Village, Rembang, which was conducted in December 2021. The sampling location method used the purposive sampling method at 3 locations according to the different mangrove densities. Measurement of the mangrove ecosystem using a transect measuring 15x15 m, with 3 gastropod subplots in a 1x1 m transect. The results showed the fraction of sand, silt and clay. The gastropod genera found were Littoria, Nodilittorina, Cerithidea, Trochus, Cassidula and Telescopium. The average value ranges from 106-346 ind/m2. The diversity index and uniformity index values are included in the low category. The dominance index value indicates a dominant pattern with a clustered distribution pattern. Sediment texture of the three fraction values with gastropod relationship obtained r = 0.947 - 0.991 which is strongly correlated. 
Co-Authors Abista Ahmad Romadoni Adi Santoso Ajeng Rusmaharani Ali Djunaedi Ambariyanto Ambariyanto Amin Yunita Nur Annisa Bayu Aji Pratama Chrisna Adhi Suryono Chrisna Adi Suryono Denny Nugroho Sugianto Dyah Pitaloka Novitasari Fauzia Farida Ganang Wibisono Hariyadi Hariyadi Hendra Irawan Ferdiansyah Huda, Abiyani Choirul Ita Riniatsih Johannes Riter Kathan Joy Abelino Koesoemadji Koesoemadji Millenia Dinda Alkautsar Muhammad Helmi Nirwani Soenardjo Nur Cahyo Widianto Nur Rahmat Nur Taufiq-Spj Nurfatin Adibah Petrus Subardjo Pratiwi Megah Sundari Raden Ario Rafif Rizki Zaidan Rikha Widiaratih Rizky Erdana Rudhi Pribadi Sri Redjeki Suryono Suryono Syahrial Varrel Canavaro Tiara Anggita Vira Meillyana Mustofa