Faculty of Fisheries and Marine

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Browsing Faculty of Fisheries and Marine by Subject "abundance"

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    Distribution of Barnacle (Balanus spp) on The Pole of Harbour PT. Persero Indonesia Sibolga North Sumatera
    (2012-11-22) Lumban Gaol, Donald
    A Study on the distribution and abundance of biofouling, Barnacles (Balanus spp) were conducted in May 2012. The objective of the study was to find out and analyze the distribution of the barnacle in relation to currents, depth of water. It revealed that current velocity affected the abundance in that greater current velocity brought about lower abundance. It addition, the abundance of Barnacles (Balanus spp) were higher on the subsurface compared to that on the above surface of water. This differences were due to food supply and duration of filtering activity of Barnacles (Balanus spp).
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    KANDUNGAN BAHAN ORGANIK SEDIMEN DAN KELIMPAHAN MAKROZOOBENTHOS SEBAGAI INDIKATOR PENCEMARAN PERAIRAN PANTAI TANJUNG UBAN KEPULAUAN RIAU. Sediment Organic Content and Maceozoobenthic Abundance in Tanjung Uban Coastal Water Riau Archipelago
    (2013-01-16) Marwan
    A survey on organic content and macrozoobenthos has been conducted in the surrounding waters of Tanjung Uban in August 2012. Organic content and macrozoobenthos analyses were carried out in Ecology Laboratory and Marine Chemistry Laboratory Faculty of Fisheries and Marine Sciences, University of Riau. The result showed that Organic content in sediment varied from 0.39-9.42%. Water quality parameters measured were still in the range of waters quality criteria for marine biota. The average macrozoobenthos abundance were varied from 5.33 – 106.67ind/m2, whilst Diversity Index (H’) 1.1329- 1.5773; Dominance Index 0.3284 – 0.4741; Uniformity Index 0.3776– 0.4748. Simple linier regression analyses between organic content and macrozoobenthos abundance shows significant relation with Y = 11.53+9.055X R2 = 0.462; r = 0.680 in Station 1 and Y = 27.04 + 1.397X in Station 2.