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Morphological identification of the soft coral, Clavularia inflata, reveals different sclerite characters across Indonesian coral reefs Beginer Subhan; Dietriech G Bengen; Sebastian Ferse; Fauzan Dzulfannazhir; Nurlita Putri Anggraini; Prakas Santoso; Dondy Arafat; Lalu M. Iqbal Sani; Prehadi Prehadi; Hawis Madduppa
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Soft corals of the genus Clavularia (Blainville 1830) have complex and difficult to distinguish morphological characteristics, making them rather difficult to identify. A paucity of information exists for Indonesian coral reefs, a complex biogeographic region at the confluence of the Pacific and Indian Ocean that covers an extensive geographic area and several marine ecoregions, is subject to several ocean current systems, and includes a high diversity of habitats. Specimens of Clavularia inflata were collected from eleven study sites across the Indonesian archipelago, morphologically described based on their sclerite characteristics, and compared among sites. Sclerite observations were divided into four parts for each colony, namely pinnules, crowns, calyces, and stolons. The sclerites found in C. inflata comprised various forms such as rods, fingers, sticks, and brackets. Morphometric measurements of C. inflata showed specimens from Kepulauan Seribu had the largest pinnule, calyx, and stolon sclerites compared to other locations. The maximum mean size of crown sclerites was observed for specimens from Maluku Tenggara Barat. Similarities in the shape of sclerites resulted in specimens from Kangean, Morotai, Tanjung Lesung, Bontang, Lombok and Natuna forming a cluster, while those from Maluku Tenggara Barat and Arborek were dissimilar to other sites. Smaller sclerite sizes in specimens from Arborek are likely related to strong currents at that site. In conclusion, there were variations in the size of sclerites across the eleven study sites, with several sites forming a cluster of similar sclerite dimensions. Further studies using molecular markers are suggested to further explore the possibility of cryptic species.

Struktur komunitas mangrove di Pulau Mare, Kota Tidore Kepulauan, Provinsi Maluku Utara (Community structure of mangrove in Mare Island, Tidore City, Maluka Utara Province Nebuchadnezzar Akbar; Abdurrachman Baksir; Irmalita Tahir; Dondy Arafat
Depik Vol 5, No 3 (2016): December 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

This study aimed to obtain information mangrove ecological index in Mare Island, Tidore Kepulauan, North Maluku. Collecting data in 2015, divided into three locations were determined based representation and the representation of mangrove. The sampling of mangrove using "line transect quadrant". The results obtained by mangrove thickness between 85-150 meters with 5 types of 3 families mangrove. Rhizophora mangrove species are found most dominating every station. Mangrove ecological index categories density, frequency, cover and species diversity is highest at the station I. While important value criteria at each station are 300. Analysis of vegetation mangrove species at each station obtained density, frequency, species diversity and the importance of the highest species is Rhizophora apicullata, then cover the highest species is Sonneratia alba. Overall results of observation and analysis, illustrating that the condition of mangroves on the island of Mare in the category of low/sparse.Penelitian ini bertujuan untuk memperoleh informasi indeks ekologi mangrove di Pulau Mare, Tidore Kepulauan, Maluku Utara. Pengambilan data pada tahun 2015 yang terbagi atas tiga lokasi yang ditetapkan berdasarkan keterwakilan dan reprsentasi mangrove. Pengambilan contoh mangrove, di lakukan dengan menggunakan metode “line transect quadrant”. Hasil penelitian diperoleh ketebalan mangrove diantara 85-150 meter dengan 5 jenis dari 3 famili mangrove. Jenis mangrove Rhizophora ditemukan paling mendominasi disetiap stasiun. Indeks ekologi mangrove kategori kerapatan, frekuensi, tutupan dan keanekaragaman jenis paling tinggi terdapat di stasiun satu. Sedangkan kriteria nilai penting pada setiap stasiun adalah 300. Analisis vegetasi jenis mangrove pada setiap stasiun diperoleh kerapatan, frekuensi, keanekaragaman jenis dan nilai penting jenis tertinggi adalah Rhizophora apicullata, kemudian tutupan jenis tertinggi adalah Sonneratia alba. Keseluruhan hasil pengamatan dan analisis, menggambarkan bahwa kondisi mangrove di pulau Mare masuk dalam kategori rendah.

PENGARUH CAHAYA TERHADAP TINGKAT KELANGSUNGAN HIDUP DAN PERTUMBUHAN KARANG LUNAK LOBOPHYTUM STRICTUM (OCTOCORALIA: ALCYONACEA) HASIL TRANSPLANTASI PADA SISTEM RESIRKULASI Beginer Subhan; Dedi Soedharma; Dondy Arafat; Hawis Madduppa; Fadillah Rahmawati; Ayu Ervinia; Aditya Bramandito; Denny Khaerudi; Ahmad Taufik Ghozali
Jurnal Teknologi Perikanan dan Kelautan Vol 3 No 2 (2012): NOVEMBER 2012
Publisher : Fakultas Perikanan dan Ilmu Kelautan

The current research was conducted to investigate the effect of light on growth of soft coral Lobophytum strictum. This species was transplanted and reared in two different ponds, uncovered pond (with light penetration) and covered pond (no light penetration. A total of 16 coral fragments was placed on each pond. Both, the survival rate and the growth rate were significantly different on the effect of light (P<0.05). The soft coral on the uncovered pond was survive up to 12 weeks (100%), followed with increased length (from 5,95 to 10,04 cm) and width (from 5,27 to 6,84 cm) of the transplanted coral fragments. Conversely, the soft coral in the covered ponds showed survival rate of 62,5% (up to 8th week), with decreased length (from 8,25 to 5,25 cm) and width (from 9,14 to 4,86 cm) of each fragments during the period of study.

Keragaman, kerapatan dan penutupan lamun di Pulau Biak, Papua Citra S. U. Dewi; Beginer Subhan; Dondy Arafat
Depik Vol 6, No 2 (2017): August 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.2.6227

The purpose of this study were to evaluate the diversity, density, and covering area of seagrass in Biak Island, Papua. Methodology that used in this study were combination of line intercept and quadrat transects, which drawn perpendicular to the shoreline. The results showed that there were 9 species of seagras found in Biak Island and it was categorized as high category. The density was renged from 450 ind/m2 to 898 ind/mand the covering area was between 60% to 80%.Penelitian ini bertujuan untuk mengetahui keragaman, kerapatan jenis lamun dan penutupan lamun di Pulau Biak. Metode yang digunakan dalam penelitian ini adalah transek kuadrat dan transek garis, yang ditarik tegak lurus dari garis pantai. Hasil penelitian menunjukkan bahwa keragaman jenis lamun di Pulau Biak tergolong tinggi, karena ditemukan delapan jenis lamun, dari 13 jenis lamun yang ada di Indonesia. Jenis lamun yang beragam di Pulau Biak diikuti juga dengan kerapatan lamun di setiap stasiun, yaitu pada kisaran 450 individu/m2 hingga 898 ind/m2. Kondisi ini seiring dengan penutupan lamun yang tergolong tinggi, yaitu berkisar antara 60% hingga 80%.

Morphological identification of the soft coral, Clavularia inflata, reveals different sclerite characters across Indonesian coral reefs Beginer Subhan; Dietriech G Bengen; Sebastian Ferse; Fauzan Dzulfannazhir; Nurlita Putri Anggraini; Prakas Santoso; Dondy Arafat; Lalu M. Iqbal Sani; Prehadi Prehadi; Hawis Madduppa
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.22102

Soft corals of the genus Clavularia (Blainville 1830) have complex and difficult to distinguish morphological characteristics, making them rather difficult to identify. A paucity of information exists for Indonesian coral reefs, a complex biogeographic region at the confluence of the Pacific and Indian Ocean that covers an extensive geographic area and several marine ecoregions, is subject to several ocean current systems, and includes a high diversity of habitats. Specimens of Clavularia inflata were collected from eleven study sites across the Indonesian archipelago, morphologically described based on their sclerite characteristics, and compared among sites. Sclerite observations were divided into four parts for each colony, namely pinnules, crowns, calyces, and stolons. The sclerites found in C. inflata comprised various forms such as rods, fingers, sticks, and brackets. Morphometric measurements of C. inflata showed specimens from Kepulauan Seribu had the largest pinnule, calyx, and stolon sclerites compared to other locations. The maximum mean size of crown sclerites was observed for specimens from Maluku Tenggara Barat. Similarities in the shape of sclerites resulted in specimens from Kangean, Morotai, Tanjung Lesung, Bontang, Lombok and Natuna forming a cluster, while those from Maluku Tenggara Barat and Arborek were dissimilar to other sites. Smaller sclerite sizes in specimens from Arborek are likely related to strong currents at that site. In conclusion, there were variations in the size of sclerites across the eleven study sites, with several sites forming a cluster of similar sclerite dimensions. Further studies using molecular markers are suggested to further explore the possibility of cryptic species.

Struktur komunitas mangrove di Pulau Mare, Kota Tidore Kepulauan, Provinsi Maluku Utara (Community structure of mangrove in Mare Island, Tidore City, Maluka Utara Province Nebuchadnezzar Akbar; Abdurrachman Baksir; Irmalita Tahir; Dondy Arafat
Depik Vol 5, No 3 (2016): December 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.3.5578

This study aimed to obtain information mangrove ecological index in Mare Island, Tidore Kepulauan, North Maluku. Collecting data in 2015, divided into three locations were determined based representation and the representation of mangrove. The sampling of mangrove using "line transect quadrant". The results obtained by mangrove thickness between 85-150 meters with 5 types of 3 families mangrove. Rhizophora mangrove species are found most dominating every station. Mangrove ecological index categories density, frequency, cover and species diversity is highest at the station I. While important value criteria at each station are 300. Analysis of vegetation mangrove species at each station obtained density, frequency, species diversity and the importance of the highest species is Rhizophora apicullata, then cover the highest species is Sonneratia alba. Overall results of observation and analysis, illustrating that the condition of mangroves on the island of Mare in the category of low/sparse.Penelitian ini bertujuan untuk memperoleh informasi indeks ekologi mangrove di Pulau Mare, Tidore Kepulauan, Maluku Utara. Pengambilan data pada tahun 2015 yang terbagi atas tiga lokasi yang ditetapkan berdasarkan keterwakilan dan reprsentasi mangrove. Pengambilan contoh mangrove, di lakukan dengan menggunakan metode “line transect quadrant”. Hasil penelitian diperoleh ketebalan mangrove diantara 85-150 meter dengan 5 jenis dari 3 famili mangrove. Jenis mangrove Rhizophora ditemukan paling mendominasi disetiap stasiun. Indeks ekologi mangrove kategori kerapatan, frekuensi, tutupan dan keanekaragaman jenis paling tinggi terdapat di stasiun satu. Sedangkan kriteria nilai penting pada setiap stasiun adalah 300. Analisis vegetasi jenis mangrove pada setiap stasiun diperoleh kerapatan, frekuensi, keanekaragaman jenis dan nilai penting jenis tertinggi adalah Rhizophora apicullata, kemudian tutupan jenis tertinggi adalah Sonneratia alba. Keseluruhan hasil pengamatan dan analisis, menggambarkan bahwa kondisi mangrove di pulau Mare masuk dalam kategori rendah.

Struktur komunitas mangrove di Pulau Mare, Kota Tidore Kepulauan, Provinsi Maluku Utara (Community structure of mangrove in Mare Island, Tidore City, Maluka Utara Province Nebuchadnezzar Akbar; Abdurrachman Baksir; Irmalita Tahir; Dondy Arafat
Depik Vol 5, No 3 (2016): December 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.3.5578

This study aimed to obtain information mangrove ecological index in Mare Island, Tidore Kepulauan, North Maluku. Collecting data in 2015, divided into three locations were determined based representation and the representation of mangrove. The sampling of mangrove using "line transect quadrant". The results obtained by mangrove thickness between 85-150 meters with 5 types of 3 families mangrove. Rhizophora mangrove species are found most dominating every station. Mangrove ecological index categories density, frequency, cover and species diversity is highest at the station I. While important value criteria at each station are 300. Analysis of vegetation mangrove species at each station obtained density, frequency, species diversity and the importance of the highest species is Rhizophora apicullata, then cover the highest species is Sonneratia alba. Overall results of observation and analysis, illustrating that the condition of mangroves on the island of Mare in the category of low/sparse.Penelitian ini bertujuan untuk memperoleh informasi indeks ekologi mangrove di Pulau Mare, Tidore Kepulauan, Maluku Utara. Pengambilan data pada tahun 2015 yang terbagi atas tiga lokasi yang ditetapkan berdasarkan keterwakilan dan reprsentasi mangrove. Pengambilan contoh mangrove, di lakukan dengan menggunakan metode “line transect quadrant”. Hasil penelitian diperoleh ketebalan mangrove diantara 85-150 meter dengan 5 jenis dari 3 famili mangrove. Jenis mangrove Rhizophora ditemukan paling mendominasi disetiap stasiun. Indeks ekologi mangrove kategori kerapatan, frekuensi, tutupan dan keanekaragaman jenis paling tinggi terdapat di stasiun satu. Sedangkan kriteria nilai penting pada setiap stasiun adalah 300. Analisis vegetasi jenis mangrove pada setiap stasiun diperoleh kerapatan, frekuensi, keanekaragaman jenis dan nilai penting jenis tertinggi adalah Rhizophora apicullata, kemudian tutupan jenis tertinggi adalah Sonneratia alba. Keseluruhan hasil pengamatan dan analisis, menggambarkan bahwa kondisi mangrove di pulau Mare masuk dalam kategori rendah.

Morphological identification of the soft coral, Clavularia inflata, reveals different sclerite characters across Indonesian coral reefs Beginer Subhan; Dietriech G Bengen; Sebastian Ferse; Fauzan Dzulfannazhir; Nurlita Putri Anggraini; Prakas Santoso; Dondy Arafat; Lalu M. Iqbal Sani; Prehadi Prehadi; Hawis Madduppa
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.22102

Soft corals of the genus Clavularia (Blainville 1830) have complex and difficult to distinguish morphological characteristics, making them rather difficult to identify. A paucity of information exists for Indonesian coral reefs, a complex biogeographic region at the confluence of the Pacific and Indian Ocean that covers an extensive geographic area and several marine ecoregions, is subject to several ocean current systems, and includes a high diversity of habitats. Specimens of Clavularia inflata were collected from eleven study sites across the Indonesian archipelago, morphologically described based on their sclerite characteristics, and compared among sites. Sclerite observations were divided into four parts for each colony, namely pinnules, crowns, calyces, and stolons. The sclerites found in C. inflata comprised various forms such as rods, fingers, sticks, and brackets. Morphometric measurements of C. inflata showed specimens from Kepulauan Seribu had the largest pinnule, calyx, and stolon sclerites compared to other locations. The maximum mean size of crown sclerites was observed for specimens from Maluku Tenggara Barat. Similarities in the shape of sclerites resulted in specimens from Kangean, Morotai, Tanjung Lesung, Bontang, Lombok and Natuna forming a cluster, while those from Maluku Tenggara Barat and Arborek were dissimilar to other sites. Smaller sclerite sizes in specimens from Arborek are likely related to strong currents at that site. In conclusion, there were variations in the size of sclerites across the eleven study sites, with several sites forming a cluster of similar sclerite dimensions. Further studies using molecular markers are suggested to further explore the possibility of cryptic species.

Keragaman, kerapatan dan penutupan lamun di Pulau Biak, Papua Citra S. U. Dewi; Beginer Subhan; Dondy Arafat
Depik Vol 6, No 2 (2017): August 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.2.6227

The purpose of this study were to evaluate the diversity, density, and covering area of seagrass in Biak Island, Papua. Methodology that used in this study were combination of line intercept and quadrat transects, which drawn perpendicular to the shoreline. The results showed that there were 9 species of seagras found in Biak Island and it was categorized as high category. The density was renged from 450 ind/m2 to 898 ind/mand the covering area was between 60% to 80%.Penelitian ini bertujuan untuk mengetahui keragaman, kerapatan jenis lamun dan penutupan lamun di Pulau Biak. Metode yang digunakan dalam penelitian ini adalah transek kuadrat dan transek garis, yang ditarik tegak lurus dari garis pantai. Hasil penelitian menunjukkan bahwa keragaman jenis lamun di Pulau Biak tergolong tinggi, karena ditemukan delapan jenis lamun, dari 13 jenis lamun yang ada di Indonesia. Jenis lamun yang beragam di Pulau Biak diikuti juga dengan kerapatan lamun di setiap stasiun, yaitu pada kisaran 450 individu/m2 hingga 898 ind/m2. Kondisi ini seiring dengan penutupan lamun yang tergolong tinggi, yaitu berkisar antara 60% hingga 80%.

eDNA Sebagai Metode untuk Pemantauan Biodiversitas di Kawasan Konservasi Laut Indonesia secara efektif dan efisien Subhan, Beginer; Setiamarga, Davin H. E.; Arafat, Dondy
Policy Brief Pertanian, Kelautan, dan Biosains Tropika Vol 5 No 3 (2023): Policy Brief Pertanian, Kelautan dan Biosains Tropika
Publisher : Direktorat Kajian Strategis dan Reputasi Akademik IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agro-maritim.0503.728-733

Pemerintah Indonesia perlu mendorong penggunaan teknologi environmental DNA (eDNA) sebagai metode utama dalam pemantauan biodiversitas di Kawasan Konservasi Laut (KKL) guna mengatasi tantangan logistik di wilayah yang luas dan beragam. Diperlukan investasi dalam pengembangan database eDNA nasional yang mencakup sekuens referensi spesies laut Indonesia dan pelatihan serta sertifikasi bagi para pemantau eDNA untuk memastikan kualitas data yang konsisten. Monitoring dengan eDNA dapat dilakukan secara rutin dan berkelanjutan di seluruh KKL untuk mengumpulkan data yang akurat dan mendukung pengamatan tren jangka panjang dalam keanekaragaman hayati laut. Selain itu, dukungan untuk penelitian lanjutan dalam identifikasi spesies baru dan pemahaman yang lebih dalam tentang ekologi laut Indonesia melalui teknologi eDNA juga perlu diberikan. Dengan mengimplementasikan rekomendasi ini, Indonesia dapat memperkuat upaya pelestarian keanekaragaman hayati lautnya secara efektif dan efisien, menjaga keberlanjutan ekosistem laut yang kaya dan unik di negara ini.

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