Primary productivity in pirmali pond.pptx

Primary productivity

1. Primary productivity in pirmali pond : understanding the engine of aquatic ecosystem Submitted by AKASH SIL 6 th semester Department of environmental science

2. Primary productivity Primary productivity in aquatic ecosystem refers to the rate at which photosynthetic organisms, such as algae and aquatic plants, convert sunlight, carbon dioxide, and nutrients into organic matter through photosynthesis. Primary productivity forms the basis of all  food chains   and  food webs   of the ecosystem. Without the primary productivity at the base, no food chain can be established NPP = Net primary productivity GPP=  Gross primary productivity RR=  Respiratory Rate

3. Aims and objectives The aims and objectives of this project are - 1) seasonal variation of primary productivity 2) season variation of other chemical water quality parameters 3) seasonal variation of other physical water quality parameters

4. Study area Sampling for the completion of this project was done in pirmali pond, patuli , purba bardhaman . Latitude of pirmali pond is N 23° 34.855' and longitude of pirmali pond is E 88° 10.9817' .

5. Findings of this project Findings of this project are parameters February March April May 1) pH 6.74 6.77 6.9 6.4 2) TDS (Total Dissolved Solid) 148 mg/l 155 mg/l 152 mg/l 150 mg/l 3) Conductivity 293 μS /cm 315 μS /cm 304 μS /cm 310 μS /cm 4) Salinity 0.01%. 0.02%. 0.01% 0.03%. 5) Total suspended solid 0.1 mg/l 0.3 mg/l 0.3 mg/l 0.4 mg/l Physical parameters

6. parameters February March April May Dissolved oxygen 1.08 mg/l 1.69 mg/l 1.69 mg/l 8.65 mg/l Chloride 7.81mg/l 12.7mg/l 9.94 mg/l 14.2 mg/l Free carbon dioxide 8.8 mg/l 15.4 mg/l 11 mg/l 11 mg/l Total alkalinity 52.5 mg/l 45 mg/l 20 mg/l 20 mg/l Total hardness 180 mg/l 210 mg/l 110 mg/l 116 mg/l Total Acidity 8.75 mg/l 25mg/l 10 mg/l 10 mg/l Phosphate 0.03 mg/l 0.04mg/l 0.02 mg/l 0.03 mg/l Chemical parameters

7. Productivity subject February March April May GPP 0.052gCm -3 h -1 0.106 gCm -3 h -1 0.136gCm -3 h -1 0.241gCm -3 h -1 NPP -0.226Cm -3 h -1 -0.264gCm -3 h -1 0.106gCm -3 h -1 0.112gCm -3 h -1 R 0.279Cm -3 h -1 0.742gCm -3 h -1 0.03gCm -3 h -1 0.129gCm -3 h -1

8. Ultimate observation During the month of February and March productivity was low in that pond as the presence of low temperature . With the temperature increase the productivity also increases. For some time we could see the dystrophic character of that pond .

9. References - Albanito , F., et al. (2020). Evaluation of soil- and stream-water chemistry interaction and the occurrence of potential acidic episodes in an alpine basin. Journal of Soils and Sediments, 20(7), 2925-2940. - Baker, P. D. (2004). Phosphorus dynamics in lakes: Natural and anthropogenic effects. Water Resources Impact, 6(2), 6-8. - Cosby, B. J., et al. (2001). Modelling the effects of acid deposition: Estimation of long-term water quality responses in a small forested catchment. Hydrology and Earthquake System Sciences, 5(3), 499-510. - Daly, C., et al. (2015). Using a national environmental monitoring framework to assess climate impacts in the US Southwest. Ecosphere, 6(9), 1-25. - Edzwald , J. K., and Tobiason , J. E. (2011). Enhanced coagulation and enhanced precipitation: water treatment processes. Journal - American Water Works Association, 103(10), 82-94.

10. conclusion Further more study is needed Long time and elaborated study is needed Study on many ponds in patuli is needed Plankton analysis is needed when pond is showing dystrophic character

11. Thank you