What can you say about biomass vs production in different seasons?

In summer biomass is low but production is high. This is because of grazers. The production is very high but grazers keep the biomass down. F ratio: amount of production based on new production. It will be very low here because there is a lot of grazers and the nutrients are being reused. grazers eat photoplankton -> excrete -> recycled by bactiria and lastly taken up once again by phytoplankton When production is way higher than biomass the F ratio is low because it means it is a lot of recycled material. this is what we see in summer where nutrients are pretty depleated.