Keanekaragaman Ikan di Sungai Luk Ulo Kabupaten Kebumen

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.

Fish diversity and heavy metal content mercury (Hg), arsenic (As) on the water and fish in Cikaniki river, Bogor regency

“…The results of field observations and identification in the laboratory found seven types of fish species divided into seven families along the Cikaniki river (Table 1), the number found was less than the research results Ridho et al (2003), who saw nine types of fish families in the Cikaniki river.The decrease in the number of fish can be caused by habitat destruction, including those related to an increase in population, industrial activities, land use and management changes, economic policies in development, and high poverty levels (Wahyuni & Zakaria, 2018). The study results as a whole, the composition of the fish species found in Cikaniki River at station 3 was more diverse than other stations.…”

“…The data obtained is the result of direct field measurements (temperature, pH) and laboratory measurements (BOD, COD, DO) can be seen in Table 2. The composition and distribution of fish are strongly influenced by changes in physics, chemistry, and biology (Wahyuni & Zakaria, 2018). Measurement of environmental factors aims to see the effect of water conditions on aquatic resource communities.…”

“…BOD level is one of the parameters used as a benchmark for measuring the pollution load of waters. BOD inspection is critical to trace the flow of pollution because it can determine the pollution load due to wastewater and design a biological discharge system for polluted water (Wahyuni & Zakaria, 2018). Biochemical Oxygen Demand (BOD) is a characteristic that indicates the amount of dissolved oxygen required by microorganisms (usually bacteria) to break down or decompose organic matter under aerobic conditions.…”

Keanekaragaman Jenis Ikan Rawa di Kecamatan Upau Kabupaten Tabalong

“…Kemelimpahan dapat menggambarkan keadaan serta jenis ikan air tawar yang mendominasi suatu tempat. Keragaman dan kelimpahan ikan juga dipengaruhi oleh faktor fisik dan kimia lingkungan seperti: suhu, kadar keasaman air atau pH, tingkat kekeruhan atau kecerahan air, kecepatan arus air, dan kadar oksigen yang terkandung di dalam perairan (Wahyuni & Zakaria, 2018) khususnya perairan rawa.…”

Pengembangan Lembar Kerja Peserta Didik Materi Keanekaragaman Hayati Berdasarkan Diversitas Ikan Sungai Aur Lemau Bengkulu

“…Tinggi-rendahnya keanekaragaman dan kelimpahan ikan pada suatu kawasan juga dapat dijadikan sebagai indikator tingkat kesehatan perairan diarea tersebut (Wahyuni, 2018).…”