- Tytuł:
- Natural Isotopes and Ion Compositions Identify Changes in Groundwater Flows Affecting Wetland Vegetation in the Drentsche Aa Brook Valley, The Netherlands
- Autorzy:
-
Elshehawi, Samer
Bregman, Enno
Schot, Paul
Grootjans, Ab - Powiązania:
- https://bibliotekanauki.pl/articles/124538.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polskie Towarzystwo Inżynierii Ekologicznej
- Tematy:
-
ecohydrology
groundwater modelling
nature conservation
radiocarbon dating
groundwater abstraction - Opis:
- This study uses groundwater isotopes and ion composition to verify model simulations and ecohydrological studies in the Drentsche Aa nature reserve in The Netherlands, which is representative for the northwestern wetland areas in the Ice Marginal Landscape zone. At eight field sites, a total of 24 samples were analysed for their 13C, 14C, 2H, and 18O isotopes and ionic composition. The isotopes indicate that most of the fen peatlands in the area depend on the exfiltration of sub-regional groundwater flows, which confirmed the previous model simulations and ecohydrological studies. At three sites, isotopes and ionic composition indicate that the groundwater from the sub-regional system has been replaced by local infiltrated rainwater, due to nearby groundwater abstractions for drinking water, which influenced the success rates of the restoration measures. Furthermore, the evidence from chloride and 14C contents was found to indicate the presence of more saline groundwater, which are influenced by the groundwater flows near salt diapirs. Groundwater abstractions may enhance the upward flow of the saline groundwater to eventually exfiltrate at the wetlands, affecting the biodiversity of the nature reserve.
- Źródło:
-
Journal of Ecological Engineering; 2019, 20, 3; 112-125
2299-8993 - Pojawia się w:
- Journal of Ecological Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł