Reedbeds are an important habitat that play an important function in purifying our water and helping with flood protection. These wetlands are dominated by common reed, often growing alongside a range of other wetland plants. Reedbeds often occur in association with other wetland habitats such as open water, ditches, carr (wet) woodland and wet grassland.

Reedbeds provide an important habitat for birds, including a number of nationally rare species. Characteristic breeding species in Carmarthenshire include reed warbler, sedge warbler, reed bunting, water rail and Cetti’s warbler. Reedbeds also provide important roosting and feeding sites for migratory and wintering birds such as the rare bittern, which is recorded at the National Wetlands Centre, Llanelli. A range of invertebrates adapted to wetland habitats can be found, such as the various dowdy wainscot moths or the colourful scarlet tiger moth.

Over the centuries many reedbeds have been lost through drainage and agricultural intensification. More recently other examples have been lost or degraded through development and pollution. Many sites have also suffered from a lack of or inappropriate management, leading to scrub encroachment and succession to woodland.

Reedbed and wetland habitat creation and enhancement has taken place within the Llanelli Millennium Coastal Park, and at the National Wetlands Centre at Penclacwydd. The importance and vulnerability of reedbeds and other wetland habitats is a focus of their work and the site is now used by thousands on wintering wildfowl and waders.

Locally important reedbed sites occur around the Witchett Pool at Laugharne–Pendine Burrows, at Ffrwd Fen near Pinged and at Llangennech overlooking the Loughor estuary. A number of smaller (but collectively significant) examples also occur along the Llanelli coast, from Kidwelly to Bynea. In Carmarthenshire, eight SSSI include at least some reedbed habitat.

Reed beds are becoming increasingly popular for the treatment of both industrial and domestic effluents, offering a simple, economical means of wastewater treatment. They can be created so as to fit in with the landscape and be an opportunity to create valuable habitats for wildlife. By soaking up and collecting water they are also an effective flood-defence system.