Hydrochemical Characteristics of the Open-Water Habitats of Selected Irish Peatlands
2014
Hannigan, Edel | Kelly-Quinn, Mary
Peat is more than 90% water (Shotyk 1988), but the chemical composition of that water can be affected by a number of environmental factors, including geology and hydrology (Shotyk 1988). The vegetation present may also affect how quickly and effectively nutrients are utilised (Shotyk 1988), and seasonal changes may determine the amount of nutrients present for the vegetation to use, particularly in ombrotrophic bogs, which rely solely on rainwater for their supply of nutrients (Proctor 1994; Vitt <i>et al.</i> 1995; Tahvanainen <i>et al.</i> 2003). Many of the studies outside of Ireland have focused on the interaction between the chemical composition of bog water and the vegetation present (Clymo 1964; 1973; Hayward and Clymo 1982; Vitt and Bayley 1984; Vitt and Chee 1990; Tahvanainen 2004). Other studies have investigated a possible link between water chemistry and vegetation along a mineral-rich to mineral-poor gradient (Bendell-Young and Pick 1997; Bendell- Young 1999; 2003; Tahvanainen 2004). Numerous studies have examined seasonal variation in water chemistry (Gorham 1956; Clymo 1984; Proctor 1994); however, little has been published in relation to Irish bogs.
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