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All Journal Akuatik: Jurnal Sumberdaya Perairan Scientific Timeline
Irma Akhrianti
Jurusan Ilmu Kelautan, Universitas Bangka Belitung
Agriculture, Biological Sciences & Forestry Environmental Science

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Pola Pertumbuhan Ikan Tempuring (Puntius gemellus) di Sungai Lubuk Bakong Tua Tunu Pangkalpinang, Pulau Bangka Andi Gustomi; Irma Akhrianti; Rama Supanji
Akuatik: Jurnal Sumberdaya Perairan Vol 13 No 1 (2019): AKUATIK : Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

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Abstract

Tempuring fish (Puntius gemellus) is a freshwater fish that belongs to the family cyprinidae, genus puntius. Ecobiological information on Tempuring fish at Bangka Island has not been found yet. The Information about Tempuring fish is limited to the study of abundance and diversity of fish species. This research aims to determine growth patterns of Tempuring fish, based on weigth and length relationship aspects. This research used a survey method, and purposive sampling.This research was carried out on the Lubuk Bakong Tua Tunu River in Pangkalpinang City Bangka Island. The results showed that growth pattern of Puntius gemellus is a negative allometric fish (b = 2.25) with a growth model W = 0.056L2.25. The parameters of aquatic environment indicate that the water quality of the measured parameters is still at an adequate threshold for the development of freshwater fish.
Kondisi Komunitas Mangrove di Pesisir Utara Pulau Mendanau dan Pulau Batu Dinding, Kabupaten Belitung Irma Akhrianti; Eddy Nurtjahya; Franto Franto; Indra Ambalika Syari
Akuatik: Jurnal Sumberdaya Perairan Vol 13 No 1 (2019): AKUATIK : Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

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Abstract

Mendanau Island and Batu Dinding Island are part of small island groups that have a high diversity and density of mangroves. Based on administratively, Mendanau Island is located in the coastal area of Simpang Pesak District, Belitung Regency, which consist of one large island (Mendanau Island) and 1 small island (Batu Dinding Island). The lack of data about potential, diversity, and community structure of mangroves on the north coast of Mendanau Island and Batu Dinding Island, therefore this research is needed as a database for planning, sustainability management of mangroves at the coastal area and small island. The data of mangrove vegetation was taken by purposive sampling method, with using line transect plot (LTP). Ilustration of sampling design is each line transect have 3 plot / kuadratic transect sized 10 m x 10 m (capling), 5 m x 5m (sapling), 1m x 1 m (seedling). The result showed that there are 12 (twelve) mangrove species were found: jenis S. alba, R. apiculata, R. stylosa, R. mucronata, B. gymnorhiza, X. granatum, L. littorea. S. hydrophyllacea, S. taccada, H. tiliaceus, Pandanus, dan I. pes-caprae. Mangrove community structure and mangrove condition on the North Coast of Mendanau Island, at several observation stations, was damaged (poor conditions), while the status of the mangrove conditions on Pulau Batu Dinding was still relatively good.
Deteksi Perubahan Tutupan Lahan Menggunakan Citra Landsat ETM (Enhanced Thematic Mapper) Multi Temporal di Pesisir Utara Pulau Mendanau dan Pulau Batu Dinding, Kabupaten Belitung Irma Akhrianti; Franto Franto; Eddy Nurtjahya; Indra Ambalika Syari
Akuatik: Jurnal Sumberdaya Perairan Vol 12 No 1 (2018): Akuatik: Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

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Abstract

Land cover changes is a physical impact which caused by the the existence of human activity that is quite high in parts of the lithosphere of the earth. The change in landscape certainly has a positive correlation with the dynamics of land use in an area, so that regular monitoring needs to be done, because often land use occurs out of control and not even in accordance with its designation. The main problems that occur in Mendanau Isalnd and Batu Dinding Island are the high level of utilization of mangrove ecosystems, the conversion of mangrove land into ecotourism areas, ports area, residental area and mining area (bauxite). This study aims to monitor changes in land cover in the northern coastal areas of Mendanau Island and Batu Dinding Island in Belitung Regency for 6 years (2000, 2002, and 2006) using a remote sensing technology approach, where image data processing refers to a guided classification method combined with check the field. The satellite images used are still classified as low resolution, namely Multitemporal ETM satellite images with ± 10% cloud cover rate. The results showed that, found 6 land cover classes, namely settlement, open land, mangrove vegetation, non-mangrove vegetation, marine waters, and clouds, which can be detected there has been a change in the increase in the area of non-mangrove vegetation by 365.47 ha, while residential areas experienced fluctuating conditions, namely an increase in cover area in 2000-2002 around 111.94 ha, then declined again in 2006 amounting to 61.28 ha. Unlike the case with the area of open land cover and cover of mangrove vegetation which tends to decrease. The area of open land cover in 2000-2002 decreased by 16.96 ha, then declined again in 2006 by 32.32 ha. The cover area of mangrove vegetation in 2000-2002 decreased by 69.5 ha, then decreased again in 2016 amounting to 208.82 ha.
KONSENTRASI BOD DAN COD PADA PERAIRAN KURAU, KABUPATEN BANGKA TENGAH Farah Fiolen; Irma Akhrianti; Mohammad Agung Nugraha
Scientific Timeline Vol. 3 No. 01 (2023)
Publisher : UNU Purwokerto

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Abstract

Kurau Waters is located in Koba District, Central Bangka Regency which is used for residential activities, fish auction places (TPI), capture fisheries, tourism, and fishing boat docks. This activity has the potential to produce organic waste, whether it has been through a wastewater treatment plant or not. Excess organic matter can cause problems. The purpose of this study was to determine the concentration of BOD and COD in the waters of the Kurau Estuary and to determine the status of BOD and COD pollution based on the relationship between BOD and COD concentrations to the Macrozoobenthos Diversity Index. Laboratory analysis of BOD using titration method and COD using closed reflux method spectrophotometrically. Concentrations of Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) in the waters of the Kurau Estuary, Central Bangka Regency have concentration values ranging from 3.10 to 6.80 mg/L and 33.00 – 116.00 mg/L. The status of organic pollution in the waters of the Kurau Estuary is in unpolluted status.
Co-Authors Andi Gustomi Eddy Nurtjahya Farah Fiolen Franto, Franto Indra Ambalika Syari Mohammad Agung Nugraha Rama Supanji