01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-03-0044 |
| Title of Abstract | Influence of Tidal and Seasonal Forcing on Hydroecological Conditions and Plankton Assemblages in the Baleswar Estuary |
| Authors | Puja Mitra*, Dr. Subrata Sarker |
| Organisation | Shahjalal University of Science and Technology |
| Address | House 5, Road 6, Khadra Model Town, Sylhet Sadar Sylhet, Sylhet, Bangladesh Pincode: 3100 E-mail: pujamitra338@gmail.com |
| Country | Bangladesh |
| Presentation | Poster |
| Abstract | Studying the dynamic plankton community of the coastal regions is important for understanding the trophic interaction of the aquatic ecosystems. However, these coastal regions are less explored Which is why this study intends to investigate the community structure as well as the drivers of phytoplankton in these tropical coastal regions. We have collected high-resolution (Hourly) data on phytoplankton, zooplankton and environmental parameters from two different locations in the Baleswar estuary by considering spatial gradients in salinity, tide and ecological dynamics. These data were collected during two different seasons, winter (December) and pre-monsoon (March) to capture the hydroecological variations associated with seasonal transitions in the estuary. Our study has found that tidal fluctuations strongly influence salinity, turbidity and nutrient availability in the estuary with salinity peaking during flood tides and nutrients (specifically nitrite and silicate) peaking during ebb tides. Diatoms were the dominant phytoplankton group in both locations and seasons. However, dominant species varied along locations and seasons. Taxa of Coscinodiscus was found dominant in estuary while taxa of Ditylum and Chaetoceros were found dominant further upstream in the river. The number of micronutrients was found to be the major drivers. Zooplankton was also found to play a vital role in shaping the phytoplankton community structure. Our study affirms that phytoplankton dynamics in the coastal regions are influenced by nutrients that are controlled by the tidal cycle. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Baleswar Estuary, Plankton Dynamics, Tidal Cycle, Seasonal Variation, Nutrient Enrichment, Phytoplankton Community, Ecohydrology, Tropical Estuary, Salinity Gradient, Environmental Parameters |
| For Awards | yes |
| Date Of Birth | 05-07-2001 |
| ECSN Registration Number | IIOE2-ECSN-0251 |