EFFECT OF EUTROPHIC WATER ON COLOR AND REPRODUCTION OF COMMON DUCKWEED, Lemna minor (Araceae: Lemna)
Keywords:
Lemna minor, eutrophication, concentration of phosphate, reproduction, colorAbstract
A type of water pollution with the excess amount of nutrients is defined as eutrophication. People
seem to take the phenomenon inconsequential matters due to rarely news hear about the consequences
of eutrophication. Lemna minor purify the water contaminant and act as indicator. Since there is small
extent to which people know about the effect of eutrophication towards the common duckweed, this
study has been conducted. The aim of this research to measure the concentration of phosphate that led
to eutrophication from different types of water sources and to determine impact of different type of
water sources on the reproduction of new fronds and color of Lemna minor. The results revealed that
fertilizer run-off has the highest reduction of phosphate concentration with 50 ppm (28.74%). While,
the highest removal efficiency of phosphate concentration were found with 55.17% for fertilizer run
off in comparison to the removal efficiency of phosphate concentration 42.85% and 0% in tap water
and leachate sample respectively. The observed changes in fronds color of all water samples shows
that they lost the chlorophyll due to its maturity and salt stress at different types of water samples.
Results showed that tap water produced the highest number of new fronds compared to fertilizer run
off and leachate sample. In conclusion, the concentration of phosphate that lead to eutrophication
from different type of water sources and the impact of different type of water sources on the
reproduction of new fronds and color of Lemna minor was obtained.
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