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STRUKTUR KOMUNITAS PADANG LAMUN PULAU DERAWAN Muhamad Roem; Asbar Laga
Jurnal Harpodon Borneo Vol 7, No 2 (2014): Volume 7 No 2 Oktober 2014
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/harpodon.v7i2.115

The aim of the research is to analize community structure derawan seagrass meadow. The research conducted in seagrass meadows of Derawan Island, East Kalimantan Province. The research method was ecological survey. Immensity and condition of the meadows were describe in decriptive analysis. The result of the research indicated that the ± 35 Ha seagrass of Derawan was dominated by H. Uninervis that made up to 86 % contribution to total relative density. H. Uninervis with average density 3.576 ± 115 ind m-2. Long term implication that confirmed this signs is the shifting in species composition for the last 18 years. There is an urgent of doing sea grass ecosystem rehabilitation to maintain the ecological sustainability of sea grass meadows as a habitat and sustainability of green sea turtle population as ecosystem user. Keywords : seagrass meadows, foraging habitat, green seaturtle, species shifting, ecological sustainability.

KOMPOSISI HASIL TANGKAPAN PERIKANAN TUGU DI PERAIRAN KOTA TARAKAN Agus Rizal; Asbar Laga
Jurnal Harpodon Borneo Vol 5, No 1 (2012): Volume 5 No 1 April 2012
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

Tugu fishing gear is one type of fishing gear in the city of Tarakan. Tugu fishing gear is highly dependent on the tides (tidal trap). In specification-pillar dimension of fishing gear catches indicated that generated diverse in type and size. This study aims to determine the types of fisheries catches the trap and the composition of fishery catches the existing tugu in the town of Tarakan. samples are taken from three stations, among others; station 1 is located in The Village Mamburungan precisely in Cape sand, station2 and station 3 is located in The Village Beach charity. Total catch weight of 12 528 heads with 54.2 Kg. The identification results obtained during the investigation of 34 species from six groups of species of marine life. Highest composition based on the number during the experiment shows in a row is a freckle-pink shrimp (Metapenaeus sp) amounted to 49.79%., And the lowest was Goldstripe sardinella (sardinella Fimbriata), chacunda gizzard (dorosoma chacunda), giant catfish (Arius thalassinus), yellowpike (Congresox talabon), Halibut (psettodes erumei), mackerel (Scomberomorus guttatus), and sea snake (Enhydrina Schistosa) 0.01% respectively. Keywords: composition, fishery catches trapt, and the City of Tarakan

MAKROZOOBENTHOS PADA KAWASAN KONSERVASI MANGROVE MAMBURUNGAN KOTA TARAKAN Asbar Laga; Muhammad Firdaus; Agustina Agustina
Jurnal Harpodon Borneo Vol 3, No 1 (2010): Volume 3 No. 1 April 2010
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

Mangrove forest in mamburungan conservation area is uniqe ecosystem, its have much biodiversity in flora and fauna. In the presence biota water especially makrozoobenthos has to big play a part in ecosystem balance. The Purpose of this research know makrozoobenthos's relationship picture to in the presence area mangrove ecological. The research found that on four sasiun researces are 263 consisting of species 163 specieses of Gastropoda's classes, 50 specieses of Bivalva's classes, 29 specieses of Polychaetha's classes, and 21 specieses of Crustacea's classes. Variety index point (H’) one that acquired ranging among 1,60 – 2,11. Coronet density correlation adjures with found makrozoobenthos existence on Mangrove Mamburungan's conservation area is gotten assesses r s 0,6. It means to exist relationship among coronet density adjures with makrozoobenthos's existence, but don't happen perfect relationship. Key word: Makrozoobenthos, Correlation / Relationship, Mangrove .

PERBEDAAN SUBSTRAT DAN DISTRIBUSI JENIS MANGROVE (STUDI KASUS : HUTAN MANGROVE DI KOTA TARAKAN) Rosaria Indah; Abdul Jabarsyah; Asbar Laga
Jurnal Harpodon Borneo Vol 3, No 1 (2010): Volume 3 No. 1 April 2010
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

The purpose of this research are to know tpe of soil pursuant to type of mangrove, to know correlation of soil to species composition distribution of mangrove. Benefit of this research are to give information regarding how far plant of mangrove in region coastal area of Tarakan city can grow at certain substrat. To government of Tarakan city as supporter information regarding readyly seed stok of mangrove needed to area of mangrove matching with place growing. Equiping researchs which have there and as reference to researchers here in after to do research concerning mangrove. The result of this research are distribution type of mangrove for Sonneratia sp in area of forest mangrove in Old Amal Beach 100% known to have type of soil dominant sand with its mean proportion of its, sandy 96,00%, silt 2,37%, clay 0,31%. Distribution of Rhizopora sp in area of forest mangrove Gusher 90,16% known to have type of soil dominant sandy clay with its mean proportion of its, sandy 87,03%, silt 10,8%, clay 2,09%. Distribution of Bruguiera sp in area of forest mangrove Gusher 47,77% known to have type of soil dominant sand with its mean proportion of its, sandy 93,73%, silt 5,19%, clay 0,46%. Its correlation for the type of Avicennia sp, Sonneratia sp, and Bruguiera sp show happened relation but donot so sliver. While Rhizopora sp show happened relation so sliver. Keywords : Soil, distribution type of mangrove, Correlation.

STUDI PARAMETER OSEANOGRAFI FISIK PERAIRAN PULAU DERAWAN Muhamad Roem; Asbar Laga; Ika Listina; Indrawati Rukmana; Kiki Astriani
Jurnal Harpodon Borneo Vol 9, No 2 (2016): Volume 9 No 2 Oktober 2016
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

A study on waves, tides and tidal currents has been done to understanding the oceanography characters of Derawan Island. Wave modeling done by the approach hindcasting methods. Derawan tidal was analyzed with admiralty method to determine the tidal constituent. Tidal currents has been studied with the plot stick approach. In general, our results show that the largest waves probability come from the northeast with a wave height between 1-4 m. Derawan tidal type are mixed with the meanseal level values at 224 cm. Key words : Derawan, Oseanography, Wave, Tidal Current.

DISTRIBUSI SPASIAL DAN TEMPORAL IKAN PEPIJA Harpadon nehereus (Hamilton, 1822) DI PERAIRAN PULAU TARAKAN, KALIMANTAN UTARA Asbar Laga; Ridwan Affandi; Ismudi Muchsin; Muhammad Mukhlis Kamal
ZOO INDONESIA Vol 24, No 1 (2015): Juli 2015
Publisher : Masyarakat Zoologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52508/zi.v24i1.476

Ikan pepija merupakan ikan demersal dengan penyebaran di perairan estuaria dan laut dangkal. Penelitian ini bertujuan untuk mengkaji distribusi spasial dan temporal ikan pepija di perairan P. Tarakan. Penelitian dilakukan dari Februari 2013 sampai dengan Februari 2014. Penangkapan ikan dilakukan dengan menggunakan pukat hela (trawl) dengan ukuran panjang sayap 7 meter dengan besar mata jaring pada sayap, badan dan kantong masing-masing berukuran 2,2 dan 1 inch. Pengoperasian jaring trawl pada masing-masing lokasi stasiun dilakukan “zig zag” dengan 2 kali masa penarikan pukat hela (towing) selama 30 menit. Ikan yang tertangkap ditimbang seluruhnya. Hasil tangkapan bervariasi saat waktu pengamatan dan antara satu stasiun dengan stasiun lainnya. Laju tangkap tertinggi pada bulan Desember dan Januari sebesar 75.56 dan 77.37 kg/jam dan terendah pada bulan April sebesar 7.41 kg/jam. Ikan pepija melakukan migrasi harian dari Tanjung Simaya (tanggal 7 kalender Hijriah), tanggal 8 di perairan Tanjung Selayu, tanggal 9 antara perairan Tanjung Selayu dan Tanjung Juata, dan tanggal 10 pada penanggalan Hijriah di perairan Tanjung Juata. Berdasarkan data tangkapan tersebut terungkap bahwa distribusi ikan pepija di perairan Pulau Tarakan berkaitan dengan pasang surut, ikan ini hanya ditemukan pada saat pasang perbani pada tanggal 7, 8, 9 dan 10 bulan Hijriah.

DISTRIBUSI SPASIAL DAN TEMPORAL IKAN PEPIJA Harpadon nehereus (Hamilton, 1822) DI PERAIRAN PULAU TARAKAN, KALIMANTAN UTARA Asbar Laga; Ridwan Affandi; Ismudi Muchsin; Muhammad Mukhlis Kamal
ZOO INDONESIA Vol 24, No 1 (2015): Juli 2015
Publisher : Masyarakat Zoologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52508/zi.v24i1.476

Ikan pepija merupakan ikan demersal dengan penyebaran di perairan estuaria dan laut dangkal. Penelitian ini bertujuan untuk mengkaji distribusi spasial dan temporal ikan pepija di perairan P. Tarakan. Penelitian dilakukan dari Februari 2013 sampai dengan Februari 2014. Penangkapan ikan dilakukan dengan menggunakan pukat hela (trawl) dengan ukuran panjang sayap 7 meter dengan besar mata jaring pada sayap, badan dan kantong masing-masing berukuran 2,2 dan 1 inch. Pengoperasian jaring trawl pada masing-masing lokasi stasiun dilakukan “zig zag” dengan 2 kali masa penarikan pukat hela (towing) selama 30 menit. Ikan yang tertangkap ditimbang seluruhnya. Hasil tangkapan bervariasi saat waktu pengamatan dan antara satu stasiun dengan stasiun lainnya. Laju tangkap tertinggi pada bulan Desember dan Januari sebesar 75.56 dan 77.37 kg/jam dan terendah pada bulan April sebesar 7.41 kg/jam. Ikan pepija melakukan migrasi harian dari Tanjung Simaya (tanggal 7 kalender Hijriah), tanggal 8 di perairan Tanjung Selayu, tanggal 9 antara perairan Tanjung Selayu dan Tanjung Juata, dan tanggal 10 pada penanggalan Hijriah di perairan Tanjung Juata. Berdasarkan data tangkapan tersebut terungkap bahwa distribusi ikan pepija di perairan Pulau Tarakan berkaitan dengan pasang surut, ikan ini hanya ditemukan pada saat pasang perbani pada tanggal 7, 8, 9 dan 10 bulan Hijriah.

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