This project focuses on monitoring the status of Groundwater Dependent Terrestrial Ecosystems (GWDTEs) in turloughs, raised bogs and fens under the Water Framework Directive (WFD).
Turloughs are topographic depressions in karst, which are intermittently flooded on an annual cycle via groundwater sources and have substrate and/or ecological communities’ characteristic of wetlands. A multidisciplinary research project led by Trinity College Dublin has been carried out to investigate the ecology and conservation status of turloughs, including flora, aquatic invertebrates and algae, hydrology and hydrochemistry, soils and conservation status.
Raised bogs are raised, dome-shaped masses of peat occupying former lakes or shallow depressions in the landscape. Bogs are ombrotrophic systems, receiving water and nutrients from precipitation, and resulting an acidic environment. They are not groundwater-dependent in the traditional sense, in that the wetland system generally does not receive direct transfer of recharge or nutrients from the groundwater bodies. Instead, the groundwater bodies can act as an indirect support, maintaining upward hydraulic gradients to promote water retention within the overlying peat substrate.
Fens are largely groundwater fed wetlands, being located in topographic hollows and fed by springs or seepages of water that has been in contact with mineral ground. Fens’ principal source of nutrients is from surface or groundwater and the substrate is an alkaline to slightly acidic peat soil. This project is focussing on calcareous fens (i.e. fed by limestone aquifers).
Project Duration: April 2017 - March 2020
