4. International Seminar of Fisheries and Marine (2ndISFM 2013)

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Trophic Status and Potential Production Estimates of Fish Littoral Waters Maninjau Lake West Sumatra
(2016-03-30) Junaidi; Syandri, Hafrijal; Azrita; Basri, Yuneidi
Tropics status is a picture of the fertility of the water, while fish production potential in an aquatic ecosystem is the ability of these waters to produce fish. Research on tropics status and estimates of fish production in littoral waters Maninjau was carried out in March and July 2013 with the purpose of the study to determine the tropics status of the lake littoral waters and fish production estimates. The results show that in March 2013 the value of the average phosphorus level was 418 ± 55.40 mg / L, water transparency 1.7 ± 0.35 meters, chlorophyll-a levels of 256 ± 0.38 mg / L in order to obtain the average value of the index status trophics of 76.61 ± 2.02 with the value of the trophic waters classified as severe. Meanwhile, in July 2013 the average value of 605 ± 4.79 Phosphorus levels ug / L, water transparency 1.3 ± 0.18 m, chlorophyll-a levels of 271.3 ± 2.65 mg / L in order to obtain the average value index of tropics status amounted to 78.62 ± 1.15 with the value of the trophics waters classified as severe. The estimated value of fish production in March 2013 by an average of 45.51 ± 2.81 kg / ha / year and in July 2013 an average of 44.99 ± 2.96 kg / ha / year