—Phytoplankton is well-known as microorganism
that can undergo photosynthesis and can only be found in
aquatic ecosystems. Universitas Indonesia (UI), Depok, has six
lakes: Kenanga, Agathis, Mahoni, Puspa, Ulin, and Salam Lake.
Those lakes are proved to have an important role in regulating
water circulation in UI and surroundings. However, study
about the role of those lakes in storing carbon which is resulted
from photosynthesis done by phytoplankton has not been
conducted yet. We have done this study by using the
light-and-dark bottle method in five kinds of depth in each lake.
That method is used to obtain net productivity (NP) value then
the result converted into the carbon sequestration rate (CSR).
Analysis of NP in each lake is done by comparing several
parameters (depth, turbidity, and biomass). Result of our study
shows that NP has negative correlation with every parameter
we observed and has varied significance value, i.e. NP-depth
(sig: 0.001), NP-turbidity (sig: 0.001), and NP-biomass (sig:
0.05). Based on calculations, six observed lakes have total of
CSR in the amount of 12,88 kg/hour. Knowing these facts could
improve our knowledge to determine what kind of lake which
can be potentially used as carbon bank and maintain it wisely.
—Carbon sequestration rate, lake,
phytoplankton, primary productivity.
The authors are with Universitas Indonesia (UI), Indonesia (e-mail:
Cite:S. Zahra, Ardiantiono, D. Oktavia, and E. Hardian, "The Potency of Phytoplankton in the Lakes of Universitas Indonesia (UI) as the “Carbon-Eater”: A Preliminary Study in Revealing the Lake as a Possibly Another Carbon Bank," International Journal of Environmental Science and Development vol. 5, no. 2, pp. 176-180, 2014.