Proceedings of MatricesFor IITTEP – ICoMaNSEd 2015
ISBN: 978-602-74204-0-3
Biology Page 450
hide cause fish are unable to adapt to changes that occur in the environment. An estimated 86.2 of freshwater fish threatened are endemic fish Wargasasmita, 2004.
Considering the potential aspect of Butini fish to the welfare of society, sustaining their population through management of their habitat is necessary to preserve the existence of this
fish, However, a reliable ecological information on their habitat physical and chemical parameters specially in Lake Towuti are still limited. Due to this fact, assessing the
environmental parameters of Butini’s based on different depths in Lake Towuti is needed to provide basis data dan information for the determination of policy management and utilization
of aquatic resources for the sustainability of Butini stock to sustainable.
2. Materials And Methods
Study was conducted in Towuti Lake, located in South Sulawesi province, sampling was
carried out every month for 12 months, with a descriptive method . Three study zone A,B,
and C were set up based on bathymetry Anonymous, 1951. Zone A: extends from the shores of Lake Village Timampu, represented as high public activities such as sawmill
sawing wood, fishing, irrigation and agriculture to Loeha Island an island in the middle of the lake. Zone B: extends near the inlet Tominanga River from Lake Mahalona to Loeha
Island. Zone C: extends from near the outlet Loeha Island Hola-hola River. Research station and zoning can be seen in Figure 1.
Fish sampling was conducted every month in each zone and at various water depth, 25, 50, 75, 100, 150 and 200 m, using five units of longline “salue” with various hook number, 8,
10, 12, 14 and 16 of 40 respectively. The distance between thorn was 5 m, It mean one unit salue consited of 200 hooks.
Figure 1. Research station in Lake Towuti
Description : Zone A : extends from the shores of Lake, sawmill waste settlement to the island center of the lake
Zone B : extends from inlet to the middle of the lake island Zone C : extends from the middle island of the lake to the outlet
Water samples were collected in each depth at each using van Dorn Water Sampler with three liters capacity. Parameters measured were: temperature using a reversed thermometer
Reversing protected thermometer, and pH and dissolved oxygen using water quality checker Rainfall and water level data were gathered from secondary data from PT. Inco, Sorowako,
South Sulawesi.
Proceedings of MatricesFor IITTEP – ICoMaNSEd 2015
ISBN: 978-602-74204-0-3
Biology Page 451
The difference of water quality parameters value in each zone, analyzed with range analysis. Principal components analysis PCA was run to determine the relationship between water
quality parameters with Butini abundance of male and female.
3. Results And Discussion 3.1. Environmental conditions of Towuti Lake
