Mewia Łacha Nature Reserve
Mewia Łacha Nature Reserve – a nature reserve in the Vistula Spit physiogeographic mesoregion in northern Poland, at the mouth of the Vistula River to the Bay of Gdańsk. It consists of two parts: the left-bank Gdańsk section on Sobieszewska Island, covering an area of 18.91 hectares, and the larger section, covering an area of 131.55 hectares, on the eastern side of the Vistula Przekop in the village of Mikoszewo.
The reserve was established in 1991 to protect the breeding grounds of various tern species and the feeding and resting habitat of Charadriiformes and Anseriformes. The presence of the dunlin is noteworthy. It is the only nesting site for sandwich terns in Poland. Little terns, common terns, ringed plovers, and oystercatchers also nest here. It boasts the largest concentration of little gulls and common gulls in Europe. In winter, approximately 50,000 ducks find shelter here, the most numerous species being long-tailed ducks, tufted ducks, and goldeneyes. Furthermore, the reserve is the only permanent habitat for seals.
The reserve also contains protected stands of sweet linseed, sea holly, and rusty-red helleborine. Other species found here include common sea buckthorn, broad-leaved helleborine, sand helichrysum, sand sedge, and, among the salt marsh species, coastal angelica, sea bulrush, protruding manna, and spiny saltwort.
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