Comparative study on the fish diversity from natural and bauxite post-mining in wetland system of Bintan Island, Indonesia

Abstract

Apriadi T, Pratama G, Putra RD, Jumsurizal, Jaya YV, Firdaus M, Arpas HD, Suryanti A. 2018. Comparative study on the fish diversity from natural and bauxite post-mining in wetland system of Bintan Island, Indonesia. Biodiversitas 19: 967-973. In this study, the fish populations between two different wetland systems in Bintan Island, Indonesia, i.e., bauxite post-mining (Kijang) and natural wetland (Toapaya) were compared and to propose a newly index namely Environomic of Fishes Index (EFI) to their respective ecosystems. The purposive random sampling at six stations, each of three stations representing bauxite mining (Kijang) and three stations representing a natural wetland (Toapaya) were used in this research. The numbers of fish species and the abundance were enumerated. The new index derived from the value of diversity index (Shannon), similarity index (Evenness), dominance index (Simpson's), conservation status, and economic value were also evaluated. The natural wetland has higher fish diversity than bauxite post-mining. The total species found were twenty-four. The same seven species were found in both areas. Twelve species were obtained from bauxite post-mining, and nineteen species were obtained from natural wetland. Puntius tetrazona and Rasbora heteromorpha were the common species in area study. The diversity and dominance index was at low category, Evenness index was at high category in all stations, except in tidal swamp station at bauxite post-mining. The EFI in natural wetland was higher than bauxite post-mining. The three community index value, economic value, and conservation status of natural wetland were higher than bauxite post-mining.

Accumulation of essential (copper, iron, zinc) and non-essential (lead, cadmium) heavy metals in Caulerpa racemosa, sea water, and marine sediments of Bintan Island, Indonesia

“…In addition, approximately 1 g of the sediment was added to 5 ml of HNO 3 and heated at 80°C until the volume changed (20-30 ml). 58 The process of adding HNO 3 was repeated and it was reheated, after which it was filtered with 0.45 μm Whatman filter paper and distilled water was added until it reached a volume of 50 ml.…”

Tingkat Kesuburan Perairan Pasca Tambang Timah di Desa Prayun Kecamatan Kundur Kabupaten Karimun

“…Fosfat terdapat pada proses penambangan timah, karena proses penambangan timah salah satunya adalah mencuci tanah yang mengandung timah dengan air sehingga mengakibatkan tanah yang mengandung fosfor larut ke dalam air. Selain dari pencucian kandungan timah, fosfat juga terdapat pada serasah pohon yang berada disekitar danau yang telah mengalami dekomposisi manjadi bahan organik maupun anorganik dengan batuan bakteri, merupakan salah satu sumber masukan fosfat bagi perairan sekitar (Apriadi et al, 2018;Bahri, 2006).…”

Chemical characteristics of red swimming crab (Thalamita spinimana) in Dompak Waters, Tanjungpinang City

“…Riau Islands is a cluster of small islands that have high natural resource potential, especially in aquatic resources [1,2,3,4,5,6], one of which is Bintan Island. Bintan Island has a long been known as one of the bauxite-producing islands in Indonesia [7,8,9,10]. Since bauxite mining activities have been banned, the fisheries sector has become one of the leading players in addition to the tourism sector.…”