Waterplant cover IJsselmeer area - Arrowweed - 2021

Waterplant cover IJsselmeer area. The aquatic plant cover in the IJsselmeer area is monitored every three years.
This means that in a three-year cycle, the aquatic plant cover is inventoried in each part of the area:
in 2016 in the Markermeer and IJmeer, in 2017 in the IJsselmeer, and in 2018 in the randmeren.
NB:
The Veluwemeer was not mapped across the area in 2018, but in a limited number of locations.For each year there is a dataset per found aquatic plant species and a dataset with the total coverage present.
These datasets are interpolated data.
In addition, there is a dataset per year with the (point) locations of the field observations.In this datasetsstate information from the years 2011 to 2018.
Overall, the zone of 0-3 meters depth is mapped.
See the layer "Point map field observations" for a representation of the measuring points.
Watch out!
Water plants can also occur outside the mapped zone.