01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-03-0210 |
| Title of Abstract | Seasonal Variability of Algal Size Classes in the Coastal Waters off Paradip, Bay of Bengal |
| Authors | Suchismita Sahu*, Sumit Kumar Mohanty, Susmita Raulo, Alok Sethi, Baisakhi Pattnaik, Suchismita Srichandan, Sanjiba Kumar Baliarsingh, Kamal Kumar Barik, Alakes Samanta, Pratap Kumar Chhotaray |
| Organisation | Centurion University of Technology and Management, Bhubaneswar |
| Address | Centurion University of Technology and Management, Bhubaneswar Jatni, Odisha, India Pincode: 752050 E-mail: suchismitasahu155@gmail.com |
| Country | India |
| Presentation | Poster |
| Abstract | Phytoplankton communities in tropical coastal ecosystems exhibit strong seasonal variability driven by monsoonal forcing and nutrient dynamics. This study investigates the seasonal distribution of phytoplankton size classes (micro, nano, and picophytoplankton) in coastal waters off Paradip, western Bay of Bengal, using both in situ and satellite data. Results reveal marked seasonal shifts in community composition. During the pre-monsoon, phytoplankton biomass was low, with pico and nanophytoplankton thriving under stratified, nutrient-limited conditions, although localized nutrient inputs occasionally favoured microphytoplankton. The monsoon season was characterized by enhanced riverine inputs, strong vertical mixing, and nutrient enrichment, leading to a pronounced bloom dominated by microphytoplankton (particularly diatoms), alongside elevated nano and picophytoplankton. In the post-monsoon period, phytoplankton biomass concentrations declined, with pico and nanophytoplankton emerging as the dominant groups under oligotrophic, re-stratified conditions. Comparisons of satellite and in situ phytoplankton biomass indicated seasonal discrepancies, with satellite underestimation during pre-monsoon and overestimation during monsoon due to turbidity and cloud interference. Overall, the findings highlight the dynamic seasonal partitioning of algal size classes and their ecological significance in sustaining coastal productivity in the Bay of Bengal. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Chlorophyll-a; MODISA; Monsoon; Mahanadi; Nutrient |
| For Awards | yes |
| Date Of Birth | 05-06-1997 |
| ECSN Registration Number | IIOE2-ECSN-0152 |