Faculty of Fisheries and Marine

Permanent URI for this community

https://repository.unri.ac.id/handle/123456789/51

Browse

Browsing Faculty of Fisheries and Marine by Subject "Abundance"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Abundance Of Dog Conch (Strombus turturella) in Coastal Area Tanjungpinang Kota Subdistrict, Tanjungpinang City. Kepulauan Riau Province
    (2013-05-30) Arianti, Nisha Desfi
    A research aims to determine the abundance of Dog Conch (Strombus turturella) and its relationship with water quality in the coastal area of the Tanjungpinang Kota Sub District was conducted in December 2012 to January 2013. The method used in this research is a survey method. Water quality parameters measured were temperature, turbidity, pH, salinity and DO, while Dog Conch (Strombus turturella) studied were abundance. Result shown that abundance of the Dog Conch (Strombus turturella) ranged from 31852 ind/ha – 37407 ind/ha. Water quality parameters are as follow: temperature ranged from 28,3 to 32,00 ° C; salinity ranged from 24,33 to 29,67 ‰; turbidity ranged from 5 - 11 NTU; dissolved oxygen ranged from 1,73 – 2,33 mg/l. Organic materials present in the substrate ranged from 28,80 - 49,07 %. Turbidity level were more than the standard issued by Indonesian Government (KepMen LH No.51. 2004). Based on data obtained, it can be concluded that the waters around the Tanjungpinang Kota Sub District is slightly polluted
  • No Thumbnail Available
    Item
    The Comparison of Diversity and Abundance Diatom (Bacillariophyta) In Bagan Siapiapi and Bengkalis Waters Area Riau Province
    (2013-06-26) Diniya, Atika
    The research was conducted in November 2012 in Bagan Siapiapi dan Bengkalis waters area, Riau Province. The research was aimed to find out the comparison of diversity and abundance diatom and shown the waters fecundity. Each location was divided into four stations, included Malacca Strait, fishing ground, estuary and settlement area. The study found 16 species of Centrales diatoms and 4 species of Pennales diatoms. The highest species total abundance among two location was at station 3, i.e. 50.522,752 sel/L, and the lowest was at station 7, i.e. 11.006,7424 sel/L. The highest individual abundance was shown by R. alata forma gracillma and Thallasiosira gravida. Bagan Siapiapi waters area was at the normal condition, it was indicated by no species was dominating the waters, so do Bengkalis. However, based on the results the Bagan Siapiapi’s was at middle level of contamination and Bengkalis’s was at low level of contamination.