ASSESSMENT OF THE ECO-HYDROLOGY OF A GROUNDWATER FED WETLAND IN RELATION TO THE SURROUNDING GRAVEL AQUIFER ON EXAMPLE OF A STUDY FROM IRELAND
Journal Title: Biuletyn Państwowego Instytutu Geologicznego - Year 2010, Vol 441, Issue 441
Abstract
Fens are wetlands, which accumulate peat and have ground water as their dominant hydrologic input. Groundwater discharge to a fen is the critical factor controlling its ecology and an understanding of hydro-ecological links is critical in the assessment of likely impacts on a wetland, which typically could arise from groundwater abstraction, drainage or agricultural practice. The significance of groundwater to fens was increased with implementation of the EU Water Framework Directive (WFD), under which fens classify as groundwater dependent terrestrial ecosystems (GWDTE) and must be included in River Basin Management plans.The specific interest of the study was set on the conservation requirements of Vertigo geyeri snail and the habitat it lives in. The snail was chosen as being a sensitive indicator of habitat change in spring-fed wetland of Pollardstown. Very detailed investigations revealed that the preferred environment for existence of the snail is a consistently damp atmosphere with relative humidity varying between 80–95%, very small fluctuations in phreatic level of ±10 cm about a stable mean and soil moisture content within the moss substrate at 80–90% saturation levels. In order to meet these requirements an upward vertical hydraulic gradient is required at a rate sufficient to exceed the counterbalance of evapotranspiration at the fen surface.
Authors and Affiliations
Anna KUCZYŃSKA
Keywords
Related Articles
- EP ID EP64687
- DOI -
- Views 109
- Downloads 0
THE USE OF NUMERICAL GROUNDWATER FILTRATION MODEL IN PLANNING OF DRAINAGE TRENCHES IN THE MODERNIZED WASTEWATER TREATMENT PLANT IN MYSZKÓW
The article presents the application of numerical model of groundwaterfiltration for assessment of necessary dewatering work range for the construction of wastewater treatment plant in Myszków. A mathematical model prov...
GROUNDWATER HAZARD REGARDING ENVIRONMENTAL IMPACT ASSESSMENT OF RENATURALISATION OF THE TURAWA RESERVOIR
A complex feasibility study including an environmental impact assessment of renaturalisation concept was made on the basis of the multidisciplinary research project for assessing ecological conditions of the Turawa reser...
Minerały ciężkie w profilu utworów miocenu w otworze wiertniczym Kazimierza Wielka (Donosy) PIG-1 (północny skraj zapadliska przedkarpackiego)
W artykule przedstawiono wyniki badań uziarnienia i składu minerałów ciężkich w sześciu próbkach utworów środkowego miocenu (formacja z Machowa) z otworu wiertniczego Kazimierza Wielka (Donosy) PIG-1. Wyróżniona asocjacj...
ZMIANY CHEMIZMU I GENEZA WÓD LECZNICZYCH KAMIENIA POMORSKIEGO W ŚWIETLE WIELOLETNIEJ EKSPLOATACJI
W uzdrowisku Kamień Pomorski występują wody lecznicze typu Cl–Na, I eksploatowane obecnie nowo wykonanym odwiertem Edward III. Nieczynne są ujęcia Józef w Dziwnówku i Kamień Pomorski IG 1 w Międzywodziu, w których stwier...
LANDSLIDE SUSCEPTIBILITY MAP IN A REGIONAL SCALE – EXAMPLE FROM OF SAN VALLEY IN THE DYNÓW FOOTHILLS
Dynów Foothills is an area Carpathians where mass movements, in particular landslides are phenomena commonly occurring. They affect the evolution of the slopes in both the long (thousands of years) as well as shorter (up...