Photosynthetic pigments in phytoplankton living in high latitudes under conditions of the polar night

Pigment composition and the vertical distribution of phytoplankton chlorophyll have been studied for the first time in the Barents Sea during the period when there is no photosynthetically active radiation. The paper describes the functional status of the Barents Sea phytoplankton community under conditions of the polar night. Studies of the Barents Sea phytoplankton during the polar night have identified an increasing influence of the warm-water Atlantic flora on the Barents Sea phytoplankton community.