| dc.description.abstract | The research about primary productivity is often noticed, this is because by
knowing the value about primary productivity that have by the ecosystem, we can
know the grade so we can use it naturally and sustainable. The research was Done
in June unti August 2014. The aim of this research was to knowing the grade of
Primary Productivity of phytoplankton in Ular River At Deli Serdang and to
analyze its relationship with the physical and chemical factors. The sampling
station was determinated by Purposive sampling method. Samples were collected
from 3 sampling station. The primary productivity was measured by the Oxygen
method.The result showed that of primary productivity range from 225,216 –
394.128 mgC/m3/day with the highest value at station 2 and the lowest value at
station 1. Analysis of Pearson correlation Show that the Factors which have a very
strong relationsip with the primary productivity were abundance of
phytoplankton, nitrate, DO, light penetration and current and factor which has a
strong relationship with pimary productivity was phosphate. | en_US |
