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Keanekaragaman Ikan di Sungai Luk Ulo Kabupaten Kebumen Wahyuni, Titik Tri; Zakaria, Agus
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 35, No 1 (2018)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2018.35.1.592

Abstract

Freshwater fish is one of the biodiversity that build river ecosystem structure. Many human activities are carried out in the river as well as in the surrounding areas, such as removal of household waste, excessive fish exploitation and land use activities. This might changes river characteristics and lead to population and biodiversity decline.This research aim to 1) analyzethe diversity and species composition of fishin Luk Ulo River of Kebumen Regency,and 2) analyze the interaction among environmental factors with fish abundance in Luk Ulo River of Kebumen Regency. This research used survey method with cluster random sampling. The river was divided into three different region; upper-stream, middle-stream, and down-stream. Fish collected from 9 stations, i.e. 3 stations in the upper-stream, 3 stations in the middle-stream, and 3 stations in the down-stream. Morphology data were analyzed descriptively in order to make species description. The influences of environmental factor to species abundance were analyzed using Principal Component Analysis (PCA).The results showed that the number of fish obtained in this study were 72 individuals classified into 7 families and 13 species. The diversity and abundance of fish are influenced by physical and chemical factors ie temperature, TSS, pH, BOD5, COD, turbidity, DO, conductivity, salinity, current and substrate. BOD5 concentration was correlated positively with fish abundance with a correlation value of 0.540. In contrast, the effect of temperature and pH has a negative correlation to fish abundance with correlation values of -0.731 and -0.024. Dissolved oxygen (DO) and conductivity no effect on fish abundance.
ANALISIS DAYA DUKUNG LAHAN TANAMAN SAGU DI KABUPATEN KONAWE Zakaria, Agus; Rianda, La; Iswandi, R. Marsuki; Budiyanto, Budiyanto
Jurnal Sosio Agribisnis Vol 2, No 2 (2017): Jurnal Sosio Agribisnis (JSA)
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.298 KB) | DOI: 10.33772/jsa.v2i2.7587

Abstract

Sago is one of plants that produce carbohydrate and has important role for Indonesia daily diet after rice, corn, and cassavas. Konawe Regency is one of the potential to grow sago in Indonesia, with the largest area covered 40,06 percent from the total of the land of sago in the Province of Southeast Sulawesi 5.024 ha. The purposes of the study were to analyze the supporting power of the land of sago in Konawe Regency; analyze the ratio of employeent absorbtion; analyze the income of the farmers of sago processor. The study was conducted in Besulutu Sub-District Konawe Regency. The population was the farmers and the owner of sago involved intoo sago enterpreneurship. The technique of sample was determined by using purposive sampling method. The data was analyzed by using descriptive analysis. Results of the research shown that the supporting power of sago plantation based on actual income to fulfill the need of the farmers was about 9 person/hectare/year. In general, the absorbtion of the employement in sago entrepreneurship was about 4 HKP/cycle of the production with the averages number 892 HOK/hectare/year, while the optimalization of the employement total absorbed was 1.784 HOK/hectare/year. The income of the farmer from sago entrepreneurship in one cycle of the production was Rp 3.493.000,-Keywords