Changes in the phytoplankton biomass (chlorophyll a), production rate, and species composition were studied over two seasons using the time series measurements in the northern limb of the Cochin estuary in relation to the prevailing hydrological conditions. The present study showed the significant seasonal variation in water temperature (F=69.4, P<0.01), salinity (F=341.93, P<0.01), dissolved i...

An integrated approach including chemical speciation analyses and microalgal bioassays was used to assess the impact of copper from copper mining on a coastal area in Northern Chile. Dissolved copper ranged from <1 microg l(-1) at reference sites to 48 microgl(-1) at sites close to the mine discharge. Dissolved copper at sites closest to the discharge always exceeded seawater complexing capacit...

Fucoxanthin is a natural carotenoid obtained from seaweed which exhibits antioxidant properties. This research aimed to assess whether fucoxanthin, immobilized on aluminum-silicon carrier particles, has toxic effect immune cells. The viability, proliferation, nitric oxide production and myeloperoxidase activity of thymocytes splenocytes mice in vitro were studied. It was shown that increased th...

This work aims to study the spatio-temporal evolution of genus Nitzschia longissima, one most important genera marine plankton diatoms, from 3 sampling stations in Nador lagoon and during 2 seasons (spring summer 2018), Using as a system, diverse abundant among planktonic diatoms. species counts, addition form longissima forma parva Grunow, three varieties namely var. closterium (W. Smith) Van ...