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All Journal Jurnal Harpodon Borneo

Roem, Muhamad

Jurnal Harpodon Borneo

Author-ID : 832150

Agriculture, Biological Sciences & Forestry Environmental Science

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STRUKTUR KOMUNITAS PADANG LAMUN PULAU DERAWAN Roem, Muhamad; Laga, Asbar
Jurnal Harpodon Borneo Vol 7, No 2 (2014): Volume 7 No 2 Oktober 2014
Publisher : Jurnal Harpodon Borneo

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.

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

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.

KAJIAN STRATEGIS PENGEMBANGAN EKONOMI WILAYAH PESISIR KECAMATAN TANJUNG PALAS TIMUR Arifin, Asfihannur; Roem, Muhamad
Jurnal Harpodon Borneo Vol 9, No 1 (2016): Volume 9 No 1 April 2016
Publisher : Jurnal Harpodon Borneo

The perception of the coastal regions that identic with poor fishermens, low level of the economy, uneducated and unhealthy environment was as a raw portrait. It also found on coastal area of Tanjung Palas Timur District of Bulungan. There are factors causing low accessibility of people to markets and capital as well as the informal system formed trading marine fishermen bargaining position unfavorable. This study is intended to find a formulation of draft strategies, programs and action plans in order to facilitate the potential and prospects in the region of the study. The results of this study include potential into capital as a force to be developed as well as the prospects of the existing opportunities to be handled appropriately, provide alternative overcome weaknesses in order to cope with market competition outside of the study area.Key words : coastal area, economic district, strategic of study

LAJU PRODUKTIFITAS BIOMASSA DAUN Halodule uninervis PADANG LAMUN PULAU DERAWAN Roem, Muhamad
Jurnal Harpodon Borneo Vol 6, No 2 (2013): Volume 6 No 2 Oktober 2013
Publisher : Jurnal Harpodon Borneo

The aim of the research is to analize the leaf biomass productivity rate of Halodule uninervis. The research conducted in seagrass meadows of Derawan Island. The research method was a combination of ecological survey and field experiment. The result of the research shows that Derawan meadows 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 has daily leaf productivity value 0,32 ± 0.03 g DW m -2 day -1.Key Words : carrying capacity, seagrass meadows, foraging habitat, green seaturtle, species shifting, ecological sustainability.

MODEL PREDIKSI GELOMBANG TERBANGKIT ANGIN DI PERAIRAN SEBELAH BARAT KOTA TARAKAN BERDASARKAN DATA VEKTOR ANGIN Roem, Muhamad; ., Ibrahim; Alamsyah, Nur
Jurnal Harpodon Borneo Vol 8, No 1 (2015): Volume 8 No 1 April 2015
Publisher : Jurnal Harpodon Borneo

The study was carry out to describe the wave driven by wind blows at the west side of Tarakan Waters. The modelling analysis using BMKG data which analysed by WRPLOT. From this study we conclude that West Side of Tarakan Water is dominated by wave taht come from west and northwest. The maximum wave height that may hit the west coast of Tarakan is 1,4 m with the probability value only 8,3 %. Keywords : Wind waves, Tarakan.

DERIVASI PERSAMAAN MATEMATIS DALAM PENDUGAAN NILAI KONSUMSI HARIAN PENYU HIJAU DI PADANG LAMUN BERDASARKAN PENGAMATAN AKTIFITAS MAKANNYA Roem, Muhamad
Jurnal Harpodon Borneo Vol 5, No 1 (2012): Volume 5 No 1 April 2012
Publisher : Jurnal Harpodon Borneo

Tremendous gaps remain in our understanding of the foraging ecology of sea turtles. For some species, little progress in the elucidation of diet and foraging habitats has been made since reviews summarized the state of our knowledge more than 20 years ago. These papers will describe how to derivate a mathematics equation to estimate the grazing rate of green sea turtle in a seagrass meadow. The mathematical equation was generated based on observation on the green sea turtle daily feeding activity which correlated with average total time that they allocated for feeding or foraging activity. Through these mathematical equations we can estimate total daily consumption of green sea turtle. Keywords : mathematic, equation, grazing rate, green sea turtle, feeding activity

Co-Authors Arifin, Asfihannur Asbar Laga, Asbar Astriani, Kiki Ibrahim . Listina, Ika Nur Alamsyah, Nur Rukmana, Indrawati

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