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- Title
Study of Factors Affecting Phytoplankton Primary Productivity in a Pond of Patna, Bihar, India.
- Authors
Verma, B. S.; Srivastava, S. K.
- Abstract
The rate of carbon fixation at the primary level currently provides the best assessment of the result of physical, chemical and biological interactions determining the actual fertility of any environment. Phytoplankton primary productivity and its regulating factors were studied in a pond in Patna, Bihar, India month-wise periodically from April 2011 to March 2013. Primary productivity was determined by light and dark bottle method. Physicochemical factors, i.e. water temperature, light penetration depth, pH, DO, alkalinity, hardness, TSS, TDS, nitrate, phosphate and phytoplankton density were determined following standard methods. Phytoplankton primary productivity (gross primary productivity) was estimated as 5.496 gC/m²/day to 9.964 gC/m²/day with mean value of 7.73 gC/m²/day. It indicates eutrophic nature of the pond. Higher values of primary productivity were found in the post monsoon season and monsoon season. Mean value of primary productivity was lower in summer and winter season. Phosphate, TSS and phytoplankton density were found to be highly correlated positively with phytoplankton primary productivity while light penetration depth, alkalinity and hardness were highly correlated negatively. Phytoplankton primary productivity was found to be moderately correlated with temperature.
- Subjects
PHYTOPLANKTON; CARBON fixation; EUTROPHICATION; MONSOONS; MARINE biology research
- Publication
Nature Environment & Pollution Technology, 2016, Vol 15, Issue 1, p291
- ISSN
0972-6268
- Publication type
Article