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Feeding behaviour and bioerosion: the ecological role of the rock-boring urchin, Echinometra mathaei (de Blainville, 1825), in Okinawa reef flat Satyawan, Noar Muda; Tutupoho, Shelly; Wardiatno, Yusli; Tsuchiya, Makoto
AQUATIC SCIENCE & MANAGEMENT Vol 1, No 1 (2013): April
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.1.1.2013.1976

Abstract

Erosion rate on corals due to activities of other biota is called bioerosion. The rock-boring urchin, Echinometra mathaei, when it is abundant, plays a significant role in benthic ecosystems, including biological processes like coral erosion. During feeding, E. mathaei erodes calcium carbonate besides grazing on algae living on coral, so it plays an important role in both organic and inorganic carbons in coral reefs. The urchin E. mathaei actively feeds during the night time (nocturnal grazer). Although in Okinawa four types (A-D) of the urchin exist, the research only focused on the types A and B. Type A of E. mathaei produced 0.44951 g feces per day on average while type B produced 0.38030 g feces per day. CaCO3 analysis in feces and gut contents showed bioerosion rate of E. mathaei type A was 0.64492 g/individu/day, and 0.54436 g/individu/day in type B. There were no significant differences in bioerosion impact of E. mathaei type A and B© Laju erosi pada karang yang disebabkan oleh biota, dikenal dengan bioerosi. Bulu babi jenis Echinometra mathaei, ketika melimpah, menjadi sangat berpengaruh terhadap ekosistem bentik termasuk proses biologi seperti erosi karang. Selama aktivitas makan, E. mathaei menggerus kalsium karbonat dalam proporsi yang besar di samping alga yang tumbuh menempel pada karang sehingga memiliki peran penting dalam siklus karbon organik dan anorganik di ekosistem terumbu karang. Bulu babi E. mathaei aktif mencari makan pada malam hari (nocturnal grazer). Meskipun di Okinanawa ada 4 tipe (A-D), pada eksperimen kali ini memfokuskan pada tipe A dan B saja. Tipe A E. mathaei rata-rata memproduksi 0,44951 g feses/hari dan tipe B memproduksi 0,38030 g feses/hari. Berdasarkan analisis CaCO3 yang dilakukan pada feses dan isi lambung, laju bioerosi yang disebabkan oleh E. mathaei tipe A sebesar 0,64492 g/individu/hari sedangkan tipe B sebesar 0,54436 g/individu/hari. Tidak terdapat perbedaan dampak bioerosi yang signifikan antara E. mathaei tipe A dan B©
DISTRIBUSI UKURAN IKAN HASIL TANGKAPAN PURSE SEINE KM. BINTANG SAMPURNA-B DI WPP 572 DAN 573 Aditya Bramana; Liya Tri Khikmawati; Noar Muda Satyawan; Ario Anggara Mukti
Jurnal Teknologi Perikanan dan Kelautan Vol 11 No 2 (2020): NOVEMBER 2020
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2820.921 KB) | DOI: 10.24319/jtpk.11.167-176

Abstract

The fisheries sector has a strategic role in national development. WPP 572 and 573 are the broad waters and located in the Indian ocean. This area has a quiet fish potential, especially from group of pelagic fishes as skipjack tuna, bigeye tuna, mackerel scad, yellowfin tuna, Indian mackerel, and mackerel tuna. However, in terms of utilization of fish resources, WPP 572 and 573 are currently experiencing a fully exploited period, especially for small and large pelagic fish. One of the methods to overcome fully exploited conditions is by managing the limitation on the size of fish that are fit to be caught. The method used in this research was a descriptive method. The sample was taken based on the purposive sampling method, by taking several types of fish caught according to their respective types which were considered to represent all the fish that had been caught. The number of fish samples adjusts to the capacity of the large pan which contains 18-20 large fish, and 50-100 small fish. The total number of catches was 75,878 kg. The main catch was 57,435 kg and bycatch was 18,443 kg. Percentage of catches were skipjack tuna (72% feasible, 28% unfit), baby tuna (100% unfit), yellowfin tuna (51% feasible, 49% unfit), mackerel scad, mackerel tuns, dolphinfish, and other fish (100% feasible). The whole fish caught in KM Bintang Sampurna-B according to the number of samples measured shows that 74% are fit to catch and 26% are not fit to be caught.
STRUKTUR KOMUNITAS ECHINODERMATA DI KAWASAN INTERTIDAL GILI MENO, LOMBOK UTARA M. Irsyad A. Ghafari; Gito Hadiprayitno; M. Liwa Ilhamdi; Noar Muda Satyawan
Al-Kauniyah: Jurnal Biologi Vol 12, No 2 (2019): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.31 KB) | DOI: 10.15408/kauniyah.v12i2.10871

Abstract

AbstrakEchinodermata merupakan salah satu kelompok invertebrata yang memegang peranan penting, baik secara ekologi maupun ekonomi. Pengetahuan tentang organisme ini sangat dibutuhkan terkait dengan keberadaannya di alam yang semakin tergerus oleh pembangunan dan aktivitas manusia yang tidak ramah lingkungan. Penelitian ini bertujuan untuk mengetahui struktur komunitas Echinodermata di kawasan intertidal Gili Meno, Lombok Utara, yang dilakukan pada bulan April 2018 di 6 stasiun pengamatan yang tersebar di kawasan intertidal. Pengambilan data dilakukan dengan metode belt transect dengan pengulangan sebanyak 2–4 kali pada setiap stasiun, dengan luas transek 100 m2. Hasil pengamatan menunjukkan bahwa ditemukan 13 spesies yang berasal dari 4 kelas Echinodermata, yaitu Asteroidea (1 spesies), Echinoidea (4 spesies), Holothuroidea (4 spesies), dan Ophiuroidea (4 spesies). Hasil penghitungan indeks ekologi menunjukkan bahwa indeks keanekaragaman komunitas Echinodermata berkisar antara 0,16–1,36 (kategori rendah-sedang). Indeks dominansi di setiap stasiun berkisar antara 0,32–0,94 (kategori rendah-sedang), sedangkan indeks kemerataan sebesar 0,25 (kategori rendah). Hal ini menunjukkan bahwa stabilitas komunitas Echinodermata di kawasan intertidal Gili Meno tergolong rendah. Hasil penelitian ini diharapkan dapat menjadi acuan dalam pembangunan kawasan wisata yang ramah lingkungan tanpa mengabaikan keberadaan sumber daya hayati laut di kawasan Gili Meno, Lombok Utara.Abstract Echinoderms are one group of invertebrates that play an essential role, both ecologically and economically. Knowledge about this organism is needed concerning its presence in nature, which increasingly eroded by the development and activities of people who are not environmental friendly. This study aims to determine the structure of the Echinoderms community in the intertidal area of Gili Meno, North Lombok, were conducted on April 2018 at six observation stations. Data were collected by belt transect method with repetition of 2–4 times at each station, with 100 m2 transect area.  The observations showed that found 13 species included in 4 classes of Echinoderms, namely Asteroidea (1 species), Echinoidea (4 species), Holothuroidea (4 species) and Ophiuroidea (4 species). The ecological index of the Echinoderms community showed that the diversity index ranged from 0.16–1.36 (low-medium). The dominance index at each station ranged from 0.32 to 0.94 (low-medium), while the evenness index was 0.25 (low). The stability of the Echinoderms community in Gili Meno intertidal area relatively low. The results expected to be a reference in the development of environmentally friendly tourism areas without ignoring the existence of living aquatic resources in the Gili Meno, North Lombok.
Abundance and diversity of phytoplankton at sekotong bay waters Western Lombok Lalu Japa; Noar Muda Satyawan; Rizky Regina Kawirian
Jurnal Pijar Mipa Vol. 16 No. 5 (2021): November 2021
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.945 KB) | DOI: 10.29303/jpm.v16i5.1702

Abstract

Phytoplankton is one of the important components in aquatic ecosystems. This organism plays an important role as a primary producer to support the life of the tropics above it. The purposes of this study were to reveal the abundance and diversity of phytoplankton species in the waters of Sekotong Bay, West Lombok. Sampling were conducted in July 2018 at 8 stations using plankton net and then observed at the Laboratory. The results of the abundance calculations show a varied pattern at each observation station. The highest abundance was found at station 8 (9,060 ind/L) followed by station 6 (8,300 ind/L), station 7 (6,490 ind/L), station 4 (4,440 ind/L), station 3 (3,980 ind/L) , station 5 (2,820 ind/L), station 2 (2,460 ind/L) and station 1 (2,440 ind/L). The Shannon - Wiener Species diversity Index also shows diverse patterns at each station. Station 7 has the highest diversity index value (H′ = 3.55), followed by station 6 (H′ = 3.46), station 8 (H′ = 3.18), station 1 (H′ = 2.72) , station 2 (H′ = 2.69), station 5 (H′ = 2.67), station 4 (H′ = 2.33) and station 3 (H′ = 2.26). Species dominance index at all stations at low category with the highest dominance found at station 3 (D = 0.19), followed by station 4 (D = 0.18), station 2 (D = 0.09), station 5 (D = 0, 09), station 1 (D = 0.08), station 8 (D = 0.06), station 6 (D = 0.05) and station 7 (D = 0.04). Species Evennes index (E) values ranged from 0.71 to 0.88, indicating that the number of individual species was relatively the same and the ecosystem was in relatively good condition. The analysis showed that the spatial pattern of abundance and diversity of phytoplankton species in Sekotong Bay was related to the distance from the estuary.
Keanekaragaman Spesies dan Zonasi Habitat Echinodermata di Perairan Pantai Semerang, Lombok Timur (Diversity of Species and Habitat Zonation of Echinoderm in Semerang Coastal Waters, East Lombok) Noar Muda Satyawan; Yusli Wardiatno; Rahmat Kurnia
Jurnal Biologi Tropis Jurnal Biologi Tropis. Vol.14 No. 2 Desember 2014
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.132 KB) | DOI: 10.29303/jbt.v13i1.66

Abstract

Research was conducted in order to determine the diversity of species and habitat zonation of Echinodermata in Semerang coastal waters East Lombok. The field survey was conducted using transects kuadrad and free collection during March to June 2013. Based on the results, in the Semerang Coast was found 26 species of Echinoderm which consist of Echinoidea (13 species), Asteroidea (7 species), Ophiuroidea (3 species ) and Holothuroidea (3 species). Echinoderms habitat in Semerang divided into 5 zones, consist of reef flat, sand, seagrass beds, rubble, and coral reefs. Diversity index values differ in each habitat. Shannon - Wiener index (Hꞌ) were largest on coral reef habitats (H ꞌ = 2.59 )and then followed by sand (H ꞌ = 2.30), rubble (H ꞌ = 2.17), seagrass (H ꞌ = 1, 93) and the reef flat (H ꞌ = 1.48). Greatest Evenness index was found in the sand habitat (E = 0.96) followed by a reef flat (E = 0.92), coral reefs (E = 0.86), rubble (E = 0.75) and seagrass beds (E = 0.67). the largest found Margalef Index (R), was found in coral reef habitats (R = 5.02) and then followed by rubble (R = 4.07), sand (R = 3.79), seagrass bed (R = 3.62) and reef flat (R = 1.41). Class of Echinoidea has found in all zones, Asteroidea and Holothuroidea not found on the reef flat zone while Ophiuroidea only found in the rubble and the coral reef zone.
KONDISI EKSISTING FAUNA MEGABENTHOS DI PERAIRAN LABUHAN PANDAN LOMBOK TIMUR PASCA GEMPA BUMI LOMBOK 7.0 SKALA RICHTER Noar Muda Satyawan; Novita Tri Atriningrum
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v19i2.1303

Abstract

Abstrak : Gangguan eksternal pada ekosistem terumbu karang dapat terjadi secara alami ataupun karena aktifitas manusia yang menimbulkan perubahan fisik maupun ekologis. Perubahan ekologis dapat terlihat dari perubahan komposisi biota yang berasosiasi di dalamnya. Salah satu kelompok biota yang berasosiasi dengan terumbu karang adalah megabenthos. Tujuan dari penelitian ini adalah untk mengetahui kondisi eksisting fauna megabenthos pada ekosistem terumbu karang di perairan Labuhan Pandan Lombok Timur. Pengamatan dilakukan pada 5 stasiun yaitu Gili Bidara (BDR_01), Gili Kondo (KND_01), Gili Petagan 1 (PTG_01), Gili Petagan 2 (PTG_02), dan Gili Petagan 3 (PTG_03). Pengambilan data megabenthos dilakukan dengan metode Benthos Belt Transect (BBT). Hasil penelitian menunjukkan bahwa ditemukan 15 jenis megabenthos yang termasuk dalam 5 Phylum (Mollusca, Echinodermata, Chordata, Annelida, dan Platyhelminthes). Jumlah jenis tertinggi ditemukan pada phylum Echinodermata (10 jenis), kemudian diikuti oleh Mollusca (2 jenis), Chordata (1 jenis), Annelida (1 jenis), dan Platyhelminthes (1 jenis). Kepadatan megabenthos tertinggi ditemukan pada stasiun BDR_01 (10.571 ind/Ha), kemudian diikuti oleh stasiun KND_01 (10.214 ind/Ha), PTG_02 (9.857 ind/Ha), PTG_03 (8.429 ind/Ha) dan PTG_01 (1.714 ind/Ha). Keanekaragaman jenis tertingi ditemukan pada stasiun PTG_01 (H’=1,14), kemudian diikuti oleh BDR_01 (H’=0,76), KND_01 (H’=0,69), PTG_03 (H’=0,17) dan PTG_02 (H’=0,09). Hasil perhitungan indeks dominansi menunjukkan bahwa Didemnum molle (phylum Chordata)  ditemukan dominan pada seluruh stasiun pengamatan. Ditemukan juga jenis megabenthos pemangsa hewan karang yaitu Acanthaster planci pada stasiun PTG_03 serta Drupella sp. pada stasiun BDR_01, KND_01 dan PTG_02. Beberapa jenis megabenthos yang ditemukan dapat dijadikan bioindikator dalam pemantauan kesehatan ekosistem terumbu karang di Perairan Labuhan Pandan, Lombok Timur.Kata Kunci: Kondisi eksisting, Megabenthos, Gempa Bumi, Labuhan Pandan, Lombok TimurAbstract: External disturbance to the coral reef ecosystem occured by naturally or due to human activities that cause physical and ecological changes. Ecological changes could be seen from changes in the composition of the associated biota. One of the biota groups that associated with coral reefs were megabenthos. The purpose of this study were to determine the condition of the megabenthos fauna on coral reef ecosystems in the Labuhan Pandan waters, Eastern Lombok. Observations were made at 5 stations namely Gili Bidara (BDR_01), Gili Kondo (KND_01), Gili Petagan 1 (PTG_01), Gili Petagan 2 (PTG_02), and Gili Petagan 3 (PTG_03). Data of Megabenthos were collected by Benthos Belt Transect (BBT) method. The results showed that found 15 species of megabenthos included in 5 phylum (Mollusca, Echinoderm, Chordata, Annelida, and Platyhelminthes). The highest number of species were found in Echinoderms phylum (10 species), followed by Mollusca (2 species), Chordata (1 species), Annelida (1 species), and Platyhelminthes (1 species). The highest megabenthos density were found at BDR_01 station (10,571 ind / Ha), then followed by stations KND_01 (10,214 ind / Ha), PTG_02 (9,857 ind / Ha), PTG_03 (8,429 ind / Ha) and PTG_01 (1,714 ind / Ha). The highest species diversity were found at stations PTG_01 (H '= 1.14), then followed by BDR_01 (H' = 0.76), KND_01 (H '= 0.69), PTG_03 (H' = 0.17) and PTG_02 (H '= 0.09). The calculation result of dominance index shows that Didemnum molle (phylum Chordata) were found dominant in all observation stations. Also found species of coral predator Acanthaster planci at PTG_03 station and Drupella sp. at stations BDR_01, KND_01 and PTG_02. Several species of megabenthos can be used as bioindicators to monitoring of coral reef health in Labuhan Pandan Waters, East Lombok.Keywords: Existing conditions, megabenthos, earthquake, Labuhan Pandan, Eastern Lombok  
Benthic and Substrate Category Profile of Coral Reef in Labuan Pandan Waters, East Lombok Noar Muda Satyawan; Novita Tri Artiningrum
Jurnal Biologi Tropis Vol. 21 No. 1 (2021): Januari - April
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v21i1.2448

Abstract

Coral reefs are unique ecosystems and only occur in the tropics area. One of the coral reef distribution in Indonesia is Lombok Island. The coral reefs in Lombok Island under degradation conditions caused by natural and human activities. The purpose of this study was to provide an overview of the benthic profile and substrate of coral reefs in the Labuhan Pandan waters, Eastern Lombok. Observations were conducted in March 2019 at 5 stations using the Underwater Photo Transect (UPT) method. The results showed that in general benthic coral reefs were dominated by Acropora Branching (35.40%) then followed by Soft Coral (20.89%), DCA (14.08%), Coral Foliose (11.07%), Rubble (7.36%) and Halimeda (2.77%). The highest percentage of Acropora Branching were found at KND_01 station (63.33%) followed by PTG_01 (49.13%), PTG_02 (31.18%), BDR_01 (21.73%), and PTG_03 (11.00%). The highest DCA percentage was found at BDR_01 station (29.27%) while Soft Coral was found dominant at PTG_02 (47.67%). Halimeda was only found in PTG_02 (1.87%) and PTG_03 (12.00%). Differences in the composition of benthic and substrate may be caused by differences in water conditions at each station.
Pelatihan Pembuatan Jala Tebar Modifikasi Sebagai Inovasi Alat Panen Udang bagi Desa Mitra “Kampung Vaname” Politeknik KP Jembrana Bali Noar Muda Satyawan; Made Mahendra Jaya; Liya Tri Khikmawati; Wulandari Sarasati; Muth Mainnah; Yulia Estmirar Tanjov; Muh. Arkam Aziz; Iya Purnama Sari; Noveldesra Suhery; Rakhma Fitria Larasati
Jurnal Pengabdian UNDIKMA Vol 3, No 3 (2022): November
Publisher : Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v3i3.6111

Abstract

The purpose of this community service were to improve the skills of Partner Village "Kampung Vaname" cultivators in making modified Cast Net so as to minimize deaths that occur after partial harvest. The methods used in this service were socialization and training. The target of this service is the cultivator of Partner Village "Kampung Vaname" Marine and Fisheries Polytechnic of Jembrana. The service activity began with the presentation of the material then continued with training in making Cast Net. Evaluation were done by giving pre-test and post-test to all training participants. Based on the service results, there was an increase in the understanding of the farming group in Partner Village about fishing gear that could be applied in the vannamei shrimp cultivation process, the vannamei shrimp farming group in Partner Village was able to make modified Cast Net fishing gear properly, and modified of Cast Net fishing gear could be one of solution for solving the problem of vaname shrimp farmers related to partial post-harvest shrimp mortality.
Sustainability Status of The Ecological Dimension in The Fisheries Management of Bali Sardine (Sardinella lemuru Bleeker 1853) in The Bali Strait Noar Muda Satyawan; Yulia Estmirar Tanjov; Agus Purwanto; Made Mahendra Jaya; Liya Tri Khikmawati; Wulandari Sarasati; Muth Mainnah; Muh. Arkam Azis; Aditya Bramana
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.4855

Abstract

Bali Strait included in the 573 Fisheries Management Area of Indonesia. One of the dominant commodities in these waters were Bali sardine (Sardinella lemuru). The dynamics of the lemuru fishery in the Bali Strait is fluctuating and tends to decrease. This study aims to determine the sustainability status of the ecological dimensions in the fisheries management of Bali sardine in the Bali Strait. Survey method were used in this study to obtain primary and secondary data related to ecological dimension attributes and then analyzed using the RAPFISH (Rapid Apraisal Technique for Fisheries) method. The results of this study indicate that the ecological dimension of lemuru fishery management in the Bali Strait has an index of 44.03 (less sustainable). There are three sensitive attributes that affect the sustainability of the ecological dimension, there were the level of utilization of fish resources, size of fish caught, and the number of catches. The recommended improvements for the sustainability of the ecological dimension were limiting fishing quotas, limiting the mesh size of fishing gear, and limiting areas and fishing seasons.
DESAIN KONSTRUKSI DAN TEKNIK PENGOPERASIAN MINI PURSE SEINE DENGAN SATU KAPAL (ONE BOAT SYSTEM) DI KENDARI, SULAWESI TENGGARA Noar Muda Satyawan; Rakhma Fitria Larasati; I Nyoman Sujiwo Bhagaskara
Jurnal Perikanan Vol 13 No 1 (2023): JURNAL PERIKANAN
Publisher : Program Studi Budidaya Perairan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v13i1.476

Abstract

Laut Banda merupakan salah satu perairan yang termasuk ke dalam Wilayah Pengelolaan Perikanan (WPP) 714 dengan potensi sumberdaya ikan pelagis yang besar. Sebagian besar ikan yang tertangkap di Laut Banda diadratkan di PPS Kendari, Sulawesi Tenggara. Alat tangkap yang banyak digunakan adalah Pukat Cincin Kecil (Mini Purse Seine). Tujuan dari penelitian ini adalah untuk mengetahui desain konstruksi dan teknik pengoperasian Mini Purse Seine dengan satu kapal. Penelitian dilaksanakan di PPS Kendari selam 2 bulan yaitu pada bulan April sampai dengan Mei 2021 dengan metode wawancara, observasi dan dokumentasi. Berdasarkan hasil wawancara dan observasi diperoleh hasil bahwa konstruksi alat tangkap Mini Purse Seine berbentuk trapesium yang terdiri dari kantong, badan jaring, sayap, tali ris atas, tali ris bawah, pelampung, dan cincin. Panjang jaring yang digunakan nelayan adalah 400 m dan dalam kantong 90 m. Kantong tempat berkumpulnya ikan  memiliki ukuran mesh size 0,8 inci sedangkan mesh size badan jaring dan bagian sayap berukuran masing-masing 1 inci. Proses pengoperasian mini purse seine meliputi persiapan di darat, persiapan di laut, proses pengumpulan gerombolan ikan, setting, dan hauling. Operasi penangkapan ikan menggunakan alat bantu penangkapan berupa lampu kapal, rumpon lampu dan rumpon daun agel.