Phytoplankton primary production in a mesotrophic pond in sub-tropical Bangladesh |
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Authors: | Moniruzzaman Khondker Md Ahsan Kabir |
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Institution: | (1) Department of Botany, University of Dhaka, 1000 Dhaka, Bangladesh |
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Abstract: | Annual gross primary productivity in mesotrophic Shahidullah Hall pond (Dhaka, Bangladesh) was 1383.35 g C m−2 y−1 (arithmetic mean). Daily primary productivity (between 1.6 and 6.8 g C m−2 d−1 was correlated with chlorophylla, day length and dissolved silica. Chlorophylla related significantly withk, incident light, SRP, alkalinity and conductivity. A negative correlation existed between biomass and rainfall. Productivity,
biomass, conductivity, alkalinity, and SRP increased after mid-winter.k, I
k
andZ
eu varied according seasonally.P
max related directly with temperature. Seasonal variation of ∝
B
was 0.0049–0.0258 mg C (mg chla mmol PAR)−1 m−2. Q10 was 2.12, community respiration 1334.99 g C m−2 y−1, and the underwater light climate 186.43μE m−2 s−1. |
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Keywords: | phytoplankton primary productivity physico-chemical factors mesotrophic pond Bangladesh |
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