Zooplankton time series Helgoland Roads

The North Sea is changing rapidly, driven by modifications in human activities and impacts of climate change. Decreasing fishing intensity, reduction of nutrient loads from local river discharges and rising water temperatures4 act in synergy, directly or indirectly, resulting in modifications in the structure of marine communities. Zooplankton plays a critical role in the functioning of marine food webs, but their response to these changes has only been partially assessed, ignoring the importance of large zooplankton taxa. Meso/macrozooplankton sampled 3 times/week (every other week from 2000 onwards) with a Calcofi net (500 μm mesh size) from 1975 to 2018 are analyzed from the monitoring station Helgoland Roads, Southern North Sea.