Glossary & References / Keywords List / Definitions:

Term to be defined Definition Synonyms & Keywords
Fen - "Mire in which a high water-table is maintained primarily by moving or seeping groundwater (q.v.) which is usually enriched with dissolved minerals. Usually supports plants requiring neutral or alkaline conditions. but can occur in a wide range of conditions."(B93 - technical terms and acronyms for wetlands management)