| dc.description.abstract | Siombak Lake is an artificial lake located in KelurahanRengasPulau,
Medan Marelan, is 18 km north of the center of Medan. Plankton is one of the
main components in the food chain and food web. The purpose of this research is
to know the diversity of plankton community, the value of water chemistry
physics parameters, and the correlation between water chemical physics factor
with plankton at Lake Siombak Medan Marelan Sub-district Medan City. The
research was conducted at Siombak Lake in September 2015. Plankton and
plankton water quality data including temperature, pH, brightness, dissolved
oxygen (DO), BOD5, NH3, and phosphor grades were obtained from the field and
analyzed in the laboratory. The method used in determining the sampling location
for plankton sampling is "Purposive Sampling" at 5 (five) observation stations.
The value of plankton diversity index obtained at Lake Siombak is Station 1:
3.05145, Station 2: 3.14593, Station 3: 3.10679, Station 4: 3.07244 and Station 5:
3.1212. Temperature, pH, BOD, Salinity, DO, Brightness are in the range of
quality standards, while nitrate and phosphate exceed the quality standard. | en_US |
