Microbial activity analyses and chlorophyll (Chl-) a
The term microbial activity used in this study was proposed by
Bratvold and Browdy (1998) and includes gross primary production
(GPP) and general microbial activity or water column respiration
rate (WCRR). Net ecosystem production (NEP) was also calculated.
NEP, GPP and WCRR were measured using the light-dark bottles
method (Strickland, 1960), and the calculations were performed in
accordance with Dodds and Cole (2007) as