Report | December 3, 2019
Protection beyond borders: An opportunity for the Quark
EXECUTIVE SUMMARY
Shared between Finland and Sweden, the Quark is a shallow, narrow sub‑basin in the northern Baltic Sea that separates the nearly‑freshwater Bothnian Bay from the more saline Bothnian Sea. The marked variation in salinity across the waters of the Quark is reflected in its flora and fauna; the area hosts a unique mix of marine, brackish, and freshwater species. It represents an important area for breeding or migration of various fish and bird species, and is home to an array of threatened species and habitats. The importance of the Quark has been internationally recognised, through the identification of the entire area as an Ecologically and Biologically Significant Area under the United Nations Convention on Biological Diversity, and the designation of one area (the Kvarken Archipelago) as part of a UNESCO World Heritage Site, on the basis of its geological value.
Despite the known ecological importance of the Quark, protection of marine life in the area is relatively limited. A patchwork of assorted types of marine protected areas (MPAs) covers nearly one‑third of the waters of the Quark – but many of these sites do not entail any specific measures to conserve natural marine features. Overlapping designations, fragmented information about sites, and gaps in knowledge about the distributions of species and marine habitats further complicate the situation, making it difficult to assess real levels of marine protection in the area and to ensure that marine life is effectively safeguarded.

