Year
2015
Abstract
Chapter 6 explores Beaver Dam Analogues (BDAs), which are human-constructed, semi-permeable structures designed to mimic the ecological and geomorphic functions of natural beaver dams. Built from natural materials such as wood posts, willow branches, and sediment, BDAs aim to restore fluvial systems by altering hydrology, sediment transport, and habitat complexity. Like natural beaver dams, BDAs function best when installed in series and require careful site selection to maximize ecological benefits.
This chapter outlines BDA construction techniques, including starter dams, post lines with wicker weaves, and reinforcement of existing beaver dams. It describes how BDAs can raise water tables, reconnect floodplains, aggrade incised channels, and enhance aquatic and riparian habitats. Over time, BDAs promote successional transitions from open water to wet meadow systems, contributing to a dynamic, resilient habitat mosaic.
This chapter outlines BDA construction techniques, including starter dams, post lines with wicker weaves, and reinforcement of existing beaver dams. It describes how BDAs can raise water tables, reconnect floodplains, aggrade incised channels, and enhance aquatic and riparian habitats. Over time, BDAs promote successional transitions from open water to wet meadow systems, contributing to a dynamic, resilient habitat mosaic.
Publisher
United States Fish and Wildlife Service
Source type
Book