Claim Missing Document
Check
Articles

Found 29 Documents
Search

Analysis of conditions and vulnerability of mangrove ecosystem degradation in Dumai City Riau Province Indonesia Tyas Dita Pramesthy; Perdana Putra Kelana; Djunaidi Djunaidi; Muhammad Nur Arkham; Rangga Bayu Kusuma Haris
Jurnal Perikanan dan Kelautan Vol 12, No 2 (2022)
Publisher : JURNAL PERIKANAN DAN KELAUTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jpk.v12i2.17595

Abstract

There is still minimum information on the condition of the mangrove ecosystem, such as canopy cover and vulnerability of the ecosystem. Therefore, it was necessary to analyze that by assessing the Important Value Index (INP), canopy cover and vulnerability to degradation. The primary data needed are the type, density, frequency and basal area of mangroves obtained by the Transect Line Plot (TLP) method. The canopy cover was obtained using the Hemispherical Photography method. The data analyzed using INP, pixel analysis with binary images and compared to standard criteria of mangrove damage and vulnerability to degradation of mangrove ecosystems. This study identified 5 types of mangroves, Avicennia alba, Rhizophora apiculata, Rhizophora mucronata, Xylocarpus granatum and Sonneratia alba. Xylocarpus granatum was the species with the highest INP at stations 1 and 2, while at station 3 it was Avicennia alba. Station 1 has the highest canopy cover with a value of 86%. The condition of the mangrove ecosystem in Dumai is generally in the good category with medium stands. In addition, the level of vulnerability to mangrove degradation in can be categorized as low vulnerability. Although this research was conducted with simple methods and equipment, the results can provide an overall illustration of the condition of the Dumai’s mangrove ecosystem, making it easier for interested parties to manage the ecosystem.
STUDY OF SEA WATER QUALITY BASED ON PHYSICAL-CHEMICAL PARAMETERS IN THE WATERS OF THE MALAKA STRAIT Djunaidi Djunaidi; Aris Widagdo; Perdana Putra Kelana; Tyas Dita Pramesthy; Muhammad Nur Arkham; Rangga Bayu Kusuma Haris; Roma Yuli F Hutapea; M. Habib EY
Jurnal Segara Vol 19, No 1 (2024): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v19i1.14243

Abstract

It is feared that the high level of human activity in the coastal areas of Dumai City and Bengkalis City will have a polluting impact on water quality conditions. Therefore, to preserve coastal and marine functions, it is necessary to manage the quality and control of sea water pollution for present and future purposes as well as ecological balance. This research aims to determine the water quality of Dumai City and Bengkalis City, focusing on the concentration of several physical and chemical water parameters listed in the sea water quality standards for marine biota. Water quality sampling was carried out in May-August 2023 at 12 research stations, then the results were compared with sea water quality standards for marine biota. The research results show that the parameters that still comply with sea water quality standards for marine biota based on the Decree of the Minister of the Environment No. 51 of 2004 are temperatures in the range of 28.7-30.8˚C and an average value of 29.45˚C., pH ranged from 6.4–7.2, with an average value of 6.9 and dissolved oxygen (DO) ranged from 5.0 – 5.9 mg/l, with an average of 5.34 mg/l. Meanwhile, the parameters that do not comply with quality standards are low brightness ranging from 0.40 m-0.58 m with an average brightness of 0.47 m and salinity ranging between 22-28 ppt, with an average salinity of 24 ppt
Identifikasi Karakteristik dan Pengetahuan Lokal Nelayan Ikan Terubuk di Pulau Bengkalis Provinsi Riau Djunaidi, Djunaidi; Kelana, Perdana Putra; Pramesthy, Tyas Dita; Nur Arkham, Muhammad; Rangga Bayu Kusuma Haris
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 6 No 2 (2023): ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Volume 6 No. 2 Edisi Desember
Publisher : Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/acr.v6i2.3446

Abstract

Fishermen play a crucial role in the 2016 national action plan for terubuk. Accordingly, conducting a study on fishermen is imperative. The primary objective of this research is to discern the characteristics and knowledge of local fishermen pertaining to terubuk. The employed method involved conducting interviews with 30 fishermen who specialize in catching terubuk. The collected data underwent descriptive quantitative analysis. The research findings revealed that all respondents were within the productive age range, and those engaged in supplementary occupations outnumbered the Bengkalis minimum salary. Local respondents exhibited a commendable level of knowledge, demonstrating an ability to articulate scientific concepts accurately, although utilizing diverse linguistic styles. In conclusion, this study posits that fishermen perceive the necessity of exploring alternative livelihoods that leverage their local knowledge. The expectation is that this approach can not only augment fishermen's income but also contribute to terubuk conservation endeavors.
Budget value of mangrove ecosystem services in The Coastal Area of Dumai City: Nilai ketersediaan jasa ekosistem mangrove di Wilayah Pesisir Kota Dumai Pramesthy, Tyas Dita; Kusuma Haris, Rangga Bayu; Kelana, Perdana Putra; Djunaidi, Djunaidi; Arkham, Muhammad Nur
Jurnal Pengelolaan Perikanan Tropis (Journal of Tropical Fisheries Management) Vol 7 No 1 (2023): Journal of Tropical Fisheries Management (on progress)
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v7i1.43827

Abstract

Jasa ekosistem mangrove di Wilayah Pesisir Kota Dumai mempunyai nilai ketersediaan terhadap barang dan jasa yang dimanfaatkan oleh masyarakat disektar. Tujuan dari penelitian adalah untuk menilai keseimbangan jasa ekosistem mangrove di Wilayah Pesisir Kota Dumai. Metode pengambilan data dalam penelitian yaitu metode survey dan wawancara dengan bantuan kuesioner, selain itu juga dilakukan kajian literatur dan diskusi dengan para pakar ekosistem mangrove. Analisis data menggunakan identifikasi jasa ekosistem mangrove dengan pendekatan diagram tulang ikan dan penilaian matriks ketersediaan jasa ekosistem menggunakan model bukhard. Hasil penelitian menyebutkan bahwa sebagian besar masyarakat pesisir Kota Dumai mendapatkan manfaat dari keberadaan ekosistem mangrove terhadap jasa penyedia dan jasa pengaturan. Jasa penyedia yang paling besar diberikan oleh ekosistem mangrove adalah menyediakan sumberdaya ikan dan crustasea seperti udang dan kepiting, sedangkan untuk jasa pengaturan terbesar yang bermanfaat adalah sebagai penahan abrasi dan pengurangan banjir ROB. Hasil penilaian ketersediaan jasa ekosistem mangrove menunjukkan bahwa secara umumnya permintaan jasa ekosistem mangrove melebihi suplai/kapasitas jasa ekosistem mangrove (nilai negatif) terutama pemukiman, industri, resort dan hotel, dan rumah makan. Nilai tersebut menyebutkan bahwa potensi dari ekosistem mangrove telah dimanfaatkan melebihi batas, sehingga diperlukan pengelolaan secara berkelanjutan dalam pemanfaatan ekosistem mangrove.
Macrozoobenthos as a Bioindicator of Pollution in the Malaka Strait Waters, Indonesia Djunaidi, Djunaidi; Kelana, Perdana Putra; Pramesthy, Tyas Dita; Arkham, Muhammad Nur; Kusuma Haris, Rangga Bayu
Jurnal Ilmu Pertanian Indonesia Vol. 30 No. 1 (2025): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.30.1.1

Abstract

Macrozoobentos are known as organisms that are sensitive to environmental changes, so they are widely used as biological indicators of a water. This study aims to determine the types of macrozoobenthos, the level of diversity, uniformity, and dominance of macrozoobenthos, including the family biotic index (FBI) to detect water quality in Dumai City. The method used was a survey with stations determined through the purposive sampling. Macrozoobenthos samples were collected using a line transect with a square transect and a core sampler. A total of 381 macrozoobentos individuals found in the waters of Dumai City consisted of 6 species from the Gastropods class (Nerita articulata, Chicoreus capucinus, Littorina scabra, Ellobium aurisjudae, Cerithidae quoyii, and Pugilina cochlidium); Bivalvia class: 1 family and 1 species (Polymesoda bengalensis). The highest macrozoobenthos density was found at Station 3 (125 ind/m2) and the lowest at station 1 (21 ind/m2). The Shannon-Wienner diversity index ranged between 1.17 and 1.52. The diversity index at all stations was relatively low, the macrozoobenthos uniformity index was high (0.654697-to 0.783512), and the dominance index was relatively low (0.234078-to 0.43574). The Shannon-Wienner Index and the dominance index are also relatively low. Further testing using the FBI showed differences in water quality: Station 1 was adequate, Station 2 was poor, while Station 3 was somewhat poor. Monitoring macrozoobenthos diversity can be helpful in detecting changes or disturbances in ecosystems. Keywords: bioindicator, diversity, Family Biotik Index, macrozoobenthos
Abundance, Diversity, and Distribution of Fish Larvae in The Bali Strait Satyawan, Noar Muda; Suhery, Noveldesra; Kelana, Perdana Putra; Triyono, Heri; Prasetyo, Ganang Dwi; Prayitno, Muhamad Riyono Edi; Tiku, Mathius
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.1.31-42

Abstract

Larva represents the initial phase of a fish’s life after hatching from the egg. Studies on fish larvae aim to provide seasonal information, as well as identify spawning and nursery areas, especially economically important fish species, to support the sustainability of fishery resources. This study aimed to gather information on the abundance, diversity, and distribution of fish larvae in the waters of the Bali Strait. Sampling was carried out from August to November 2024, using a trawl net at five observation stations. The larval samples were preserved with 4% formalin and subsequently identified and counted using a microscope at the Capture Fisheries Laboratory of Marine and Fisheries Polytechnic of Jembrana. This study found 22 families of fish larvae, with abundance ranging from 38 to 433 individuals per 1000 m3. Spatially, the highest abundance was recorded at the Perancak station, followed by Tuwed, Sumbersari, Cupel, and Jimbaran. Temporarily, fish larvae with high abundance were found from September to November. The larval composition was dominated by the families Clupeidae, Gobiidae, Bramidae, and Carangidae. Shannon-Wiener Index (H') of fish larvae ranged from 0.64 to 2.18, indicating that the level of diversity and stability of the community was at a low–moderate level. The highest diversity was found at Tuwed station. The distribution of fish larvae is influenced by oceanographic characteristics, fish behavior, and the availability of natural food sources, such as plankton.
DISTRIBUSI KAWASAN MANGROVE DI PULAU POTO KABUPATEN BINTAN MELALUI PENGINDERAAN JAUH Mochamad Candra Wirawan Arief; Iwang Gumilar; Zahidah; Heti Herawati; Perdana Putra Kelana; Sri Een Hartatik
Bioma Vol. 19 No. 2 (2023): Bioma
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/Bioma19(2).4

Abstract

Mangrove is a unique vegetation type growing along the coastline and estuarine in tropical and subtropical countries. Mangroves in Indonesia are distributed in all major islands and small islands from Aceh on westside stretched to Papua on the east. This study is to monitor the mangrove area in Poto island a small island part of Kabupaten Bintan, Province of Riau Kepulauan. The difference in spatial resolution of remote sensing data Sentinel 2A and Pleiades were used to classify the land use including the mangrove area. The supervised classification by maximum likelihood classification showed the high-resolution image using Pleiades has higher accuracy for mangroves 81.99% and overall accuracy 90% (kappa 0.86) compared to Sentinel 2A for mangrove 72,34% and overall accuracy 80% (kappa 0.73). The mangrove area approximately 257 ha is strip-lining along the coastline with the largest mangrove area located on the southside of the island. Further research is to identify the mangroves’ formation and the serial condition of mangroves on the different times.
Manfaat Pengelolaan Suaka Perikanan Terubuk (SPT) Bagi Masyarakat Pesisir di Perairan Bengkalis, Riau: Pendekatan Sistem Sosial-Ekologi Arkham, Muhammad Nur; Kusuma Haris, Rangga Bayu; Ikhsan, Suci Asrina; Djunaidi, Djunaidi; Kelana, Perdana Putra; Pramesthy, Tyas Dita; Widagdo, Aris; Febrianto, Fredi; Anwar, Sony; Habib EY., M.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 2 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v16i2.51619

Abstract

Penetapan Suaka Perikanan Terubuk (SPT) berdasarkan Peraturan Bupati Bengkalis No. 15 Tahun 2010 dan Keputusan Menteri Kelautan dan Perikanan No. KEP.59/MEN/2011 tentunya memberikan dampak sosial dan ekologi yang positif. Penelitian ini bertujuan menilai manfaat sosial dan ekologi SPT bagi masyarakat pesisir di Perairan Bengkalis, Riau. Data diperoleh melalui wawancara dan analisis produksi perikanan berdasarkan ketersediaan data dari tahun 2008-2016. Keberadaan ikan terubuk di perairan Kabupaten Bengkalis, Kepulauan Meranti dan Siak lekat dengan nilai sejarah dan budaya. Hasil dari pemodelan peramalan produksi selama 10 tahun menunjukkan penurunan produksi ikan terubuk, dengan prediksi penurunan 1,37 ton per tahun (-0,58%) berdasarkan model S-Curve. Hasil analisis statistik (t-test) juga menyebutkan tidak ada pengaruh antara sebelum dan setelah diterbitkannya SK (Peraturan Larangan Terubuk) dengan melihat nilai P-Value > 0,005. Secara umum, pengelolaan perikanan Terubuk yang ada di Perairan Provinsi Riau belum efektif dengan hanya diterbitkannya SK pengelolaan Kawasan, akan tetapi diperlukan beberapa langkah strategis diantaranya adalah dengan meningkatkan peran Masyarakat dalam pengelolaan, peningkatan pengawasan dan penegakan hukum dalam melakukan konservasi perikanan Terubuk.
EVALUASI TEKNIK PENGOPERASIAN PURSE SEINE PADA KM. SUMBER REZEKI Mardiah, Ratu Sari; Hutapea, Roma Yuli Felina; Kelana, Perdana Putra; Ikhsan, Suci Asrina; Sari, Ratih Purnama; Haris, Rangga Bayu Kusuma; Tiku, Mathius
Jurnal Penelitian Perikanan Laut (Albacore) Vol 8 No 1 (2024): Albacore
Publisher : Departemen PSP IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/core.8.1.099-108

Abstract

Tujuan penelitian ini untuk mengevaluasi teknik pengoperasian purse seine pada KM. Sumber Rezeki berdasarkan Permen KP No 18 Tahun 2021. Penelitian ini dilaksanakan menggunakan KM. Sumber Rezeki milik PT. HLS tahun 2022. Data dikumpulkan dengan metode observasi dan wawancara. Hasil nya adalah purse seine yang digunakan KM. Sumber Rezeki adalah jenis purse seine pelagis kecil dengan nama daerah pukat langgar. Konstruksinya terdiri atas tali ris atas 450 m, tali ris bawah 450 m, tali pelampung 450 m, tali pemberat 450 m, srampat 450 m, tali cincin 450 m, pelampung 1500 buah, pemberat 700 buah, cincin 105 buah. Alat bantu pengoperasian purse seine adalah rumpon menetap dan lampu. Kapal yang digunakan adalah kapal motor dengan ukuran 168 GT. Penangkapan ikan dilakukan pada jalur III dan WPP 711. Berdasarkan evaluasi teknik pengoperasian purse seine, tujuh aspek telah dinyatakan sesuai yaitu mesh size dan panjang tali ris sesuai, ukuran kapal dan jalur penangkapan telah sesuai. Satu aspek yang belum sesuai yaitu pengoperasian pukat langar tidak dilengkapi dengan radar reflektor sebagai alat bantu penangkapan. Kata kunci: evaluasi, pengoperasian, purse seine, teknis