Ecological Services works to ensure the survival of our rare and endangered species in all our landscapes and habitats through a variety of programs, publications, and other resources. A new vision for a near- vanished habitat. . . . Calcareous fens are rare peat wetlands characterized by cold inflowing groundwater containing dissolved calcium and magnesium, creating ecological conditions favorable to supporting certain very rare plants. Calcareous fens are found on slopes, such as at the base of river bluffs.
Fens have special protection under the Minnesota Wetlands Conservation Act.
The Guide to Scientific and Natural Areas lists several sites maintained by the SNA program with calcareous fens. The law also regulates importation, transportation and sale. A permit for activities covered by the law can be requested by sending a letter to the address below. The letter should describe the justification, how many individuals will be taken, and from where. Most permits are requested for research projects.