Effect of salinity and temperature on plankton dynamics of Hooghly-Matla estuarine system, India

  • Ujjwal Roy Aliah University, DN-41, Sector-V, Salt Lake City, Kolkata-700 091, West Bengal, India.
  • Sahabuddin Sarwardi
  • N.C. Majee
  • Santanu Ray

Abstract

The Hooghly-Matla estuarine complex is one of the important estuarine systems of the world. Litter biomass contribute nutrient to the adjacent estuary through tidal influence. Salinity and temperature play an important role in the regulation of phytoplankton and zooplankton dynamics of the estuary. In this article, an NPZ model is considered with Holling type-II response function. The present work focuses on salinity and temperature based equations of plankton dynamics. The essential mathematical features are analyzed in terms of local and global stability around the interior equilibrium, which is the most important equilibrium state of the model. The equations of three component model (nutrient, phytoplankton and zooplankton) are solved both analytically and numerically. For numerical solution, numerics are used from real data base of Hooghly-Matla estuarine system. This model identifies a combination of a set of points of the salinity and temperature of the estuary which helps to determine the dynamics of the system. In addition, this model also predicts the effect of global warming (rise or fall in temperature and salinity) on plankton dynamics of the system.

Author Biography

Ujjwal Roy, Aliah University, DN-41, Sector-V, Salt Lake City, Kolkata-700 091, West Bengal, India.
Assistant Professor in the Department of Mathematics, Aliah University, Kolkata
Published
2015-02-19
Section
Articles