EG-Marine Mammals harbour seal surveys in the Wadden Sea and Helgoland in 2020-2021: Harbour seal population size in the Wadden Sea plateaus close to the level it was in 1900 ...

• Main Authors: Galatius, Anders, Abel, Christian, Brackmann, Jens, Brasseur, Sophie, Jeß, Armin, Meise, Kristine, Meyer, Julia, Schop, Jessica, Siebert, Ursula, Teilmann, Jonas, Thøstesen, Charlotte Bie
• Format: Report
• Language: English
• Published: Zenodo 2021
• Subjects: Biodiversity; Conservation; Monitoring; Scientific research; Seals; Helgoland; Härkönen; harbour seal
• Online Access: https://dx.doi.org/10.5281/zenodo.8270247; https://zenodo.org/record/8270247

The harbour seal counts are synchronised to the degree possible between the three Wadden Sea countries, Denmark, Germany and the Netherlands, in order to obtain a combined estimate for the number of harbour seals and newborn pups in the entire Wadden Sea and Helgoland. Harbour seals are counted when...