 Alvar - Alvar locations: Encyclopedia - AlvarAn alvar or pavement barren is a limestone plain with thin or no soil and, as a result, sparse vegetation. This environment suffers from poor drainage, so these areas flood in the spring and become very dry and hot in the summer. This challenging habitat supports a community of rare plants and animals, including species more commonly found on prairie grasslands. Lichen and mosses are common species. Trees and bushes are absent or severely stunted. Alvars can be found in southern Sweden, northwest Estonia and around the Great La ...
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