Ammonium threshold values for groundwater quality in the EU may not protect groundwater fauna: evidence from an alluvial aquifer in Italy

Differences between groundwater fauna in shallow and in deep intergranular aquifers as an indication of different characteristics of habitats and hydraulic connections

“…Anton BRANCELJ, 1,2* Uroš ŽIBRAT, 1 Brigita JAMNIK N o n -c o m m e r c i a l u s e o n l y fauna (Marmonier et al, 1993;Stoch et al, 2009;Di Lorenzo et al, 2015) but detailed knowledge is still lacking. As summarized by Larned (2012), this is mainly due to manifold limitations such as: i) difficult accessibility, ii) lack of information about ecosystem boundaries, iii) lack of information regarding spatial heterogeneity, iv) lack of taxonomic and biogeographic information and v) the limited number of field investigations that have been conducted.…”

The role of anthropogenic and natural factors in shaping the geochemical evolution of groundwater in the Subei Lake basin, Ordos energy base, Northwestern China

“…On one hand, a variety of human activities such as drinking, irrigation and industrial use are supported by groundwater; on the other hand, groundwater plays a vital role in the maintenance and restoration of ecosystems dependent on groundwater such as alluvial and rocky aquifers, hyporheic zones, springs and wetlands (Boulton, 2009;Hancock et al, 2005). It is well known that many important ecological processes can be disrupted by changes in groundwater chemistry (Amalfitano et al, 2014;Di Lorenzo et al, 2015;Iepure et al, 2014). Therefore, a sustainable groundwater management strategy requires a deeper understanding of geochemical evolution of groundwater in order to guarantee reliable supply for all purposes.…”

Effect of Temperature Rising on the Stygobitic Crustacean Species Diacyclops belgicus: Does Global Warming Affect Groundwater Populations?

“…Groundwater ecosystems are generally poorer in nutrients and oxygen than surface water ecosystems [12][13][14][15][36][37][38][39][40]. In order to reduce energetic costs, groundwater ectotherms have evolved metabolic rates that are lower than those of their close epigean relatives [20,[41][42][43][44].…”

“…The respirometric measurements were started on the day 8th for the trials at 14 • C. The whole procedure (collection of new animals from the field, acclimation in bore water and in standard water and testing) was repeated for the trial at 17 • C at the day 9th. A sampling effect on the trials was not considered likely since groundwater habitats have a strong physical inertia on a monthly scale [11][12][13][14][15]. The animals that had been not used in the tests were kept in the bore water in the thermostatic cabinet.…”

“…Diurnal temperature fluctuations are typically found at depths of less than 1 m, but seasonal fluctuations may be detectable at depths up to 15 m [10]. The annual amplitude of temperature is typically less than 2 • C in porous aquifers that are deeper than 5 m below the soil surface [11][12][13][14][15]. Yet, shallow porous aquifers are not immune to global warming, because the annual mean temperature of groundwater closely tracks the ambient air temperature [11].…”