Since SROCC, changes in the community structure and diversity of plankton, macrofauna and infauna have been detected in some shelf seas, although attribution has been regionally specific  . Detection of the picoplankton Synechococcus spp. in the North Sea is potentially linked to a summer decrease in copepod stocks and declining food-web efficiency  . The seasonally distinct phytoplankton assemblages in the North Sea have begun to appear concurrently and homogenise . Changes in abundance, species composition and size of zooplankton have been detected in some shelf seas , including a decline in stocks of larger copepods, increased abundances of gelatinous and meroplankton, and a shift to smaller species due to warming, increased river discharge, circulation change and/or extreme events  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report