Produktivitas dan Serapan Nutrien Harian Spirogyra sp. dan Hydrodictyon sp.

Niken Tunjung Murti Pratiwi, Inna Puspa Ayu, Bayu Nugraha
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Abstract

This research aimed to analyze the potency of primary productivity (PP) and daily nutrients uptake of
Spirogyra sp. and Hydrodictyon sp. The research was conducted using Randomized Block Design and
Completely Randomized Design. Randomized Block Design was used to determine the difference of PP of
both filamentous microalgae in different time periods. Completely Randomized Design was used to determine
the difference of daily net primary productivity and total amount of nutrients utilization by both filamentous
microalgae in the same light intensity. The observations showed that Spirogyra sp. dan Hydrodictyon sp. has
same PP (p>0,05), both in total (daily) and time periods. The morning PP of two filamentous microalgae were
different from the daylight (p<0,05), and the daylight has different value from the afternoon (p<0,05), but there
were similar value of PP between morning and afternoon (p>0,05). Spirogyra sp. and Hydrodictyon sp. has
similar capability in uptaking nutrients daily and in time periods observations (p>0,05).
Keywords: Hydrodictyon sp., nutrients, primary productivity, Spirogyra sp.

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