Each year, SEAPOP’s monitoring data series from the key sites grow. Some of the data series have recently been started, while others span several decades.

The colour of the cells in the matrix denotes which type of data is found for a given species at a given locality – yellow for population development, green for breeding success, blue for survival and red for diet. You will find detailed matrices for the different types of data further down the page, including data on phenology for a few species and localities.

Click on a cell in the matrix, and you will come to the data portal, which will conduct a search for data of the given type, species and locality.

A diagonal line over a cell denotes that data for the given species on the given locality exist, but they are not yet ready for presentation at the moment.

Monitored species belong to different groups with relation to the environment in which they forage (pelagic, coastal or ice) and how they forage (diving or surface-feeding). Note that the lesser black-backed gull also sometimes behaves as a pelagic species, but it is included in the group “coastal surface-feeding” here for practical purposes.


See detailed data matrices for


How to use the data portal