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Author | Di Lorenzo, T.; Galassi, D.M.P. | ||||
Title | Agricultural impact on Mediterranean alluvial aquifers: do groundwater communities respond? | Type | Journal Article | ||
Year | 2013 | Publication | Fundamental and Applied Limnology/Archiv für Hydrobiologie | Abbreviated Journal | |
Volume | 182 | Issue | 4 | Pages | 271-282 |
Keywords | alluvial aquifers, groundwater, stygobiont, nitrate, overexploitation | ||||
Abstract | In Mediterranean countries agricultural development heavily depends on groundwater availability due to arid and semi-arid climate and poor surface-water resources. Agriculture represents one of the most relevant pressures which generate impacts in alluvial aquifers by means of fertilizers and pesticides usage and groundwater overexploitation. Until now, very few studies have addressed the ecological response of groundwater fauna to groundwater contamination and overexploitation due to agricultural practices. We investigated a Mediterranean alluvial aquifer heavily affected by nitrates contamination and groundwater abstraction stress due to crop irrigation. The aim of this study was to evaluate the sensitivity of groundwater communities to (a) groundwater nitrate contamination, (b) groundwater abstraction due to irrigation practices, and (c) saltwater intrusion. The present work suggests that nitrate concentration lower than 150 mg l –1 is not an immediate threat to groundwater biodiversity in alluvial aquifers. This conclusion must be carefully considered in the light of the total lack of knowledge of the effects of long-term nitrate pollution on the groundwater biota. Moreover, local extinctions of less tolerant species, prior to monitoring, cannot be ruled out. Conversely, species abundances in ground water are affected by groundwater withdrawal, but species richness may be less sensitive. This result is attributable to the disappearance of saturated microhabitats and to the depletion of fine unconsolidated sediments, reducing the surface available to bacterial biofilm, which represent the trophic resource for several groundwater invertebrates and where the main aquifer self-purification processes, such as denitrification, take place. Saltwater intrusion seems not to affect groundwater species at the values measured in this coastal aquifer. |
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Publisher | E. Schweizerbart'sche Verlagsbuchhandlung | Place of Publication | Editor | ||
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ISSN | 1863-9135 | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | THL @ luqianxue.zhang @ DiLorenzo2013 | Serial | 43 | ||
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Author | Dikaiakos, J.G.; Tsitouris, C.G.; Siskos, P.A.; Melissos, D.A.; Nastos, P. | ||||
Title | Rainwater composition in Athens, Greece | Type | Journal Article | ||
Year | 1990 | Publication | Atmospheric Environment. Part B. Urban Atmosphere | Abbreviated Journal | |
Volume | 24 | Issue | 1 | Pages | 171-176 |
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Publisher | Elsevier | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | THL @ luqianxue.zhang @ dikaiakos1990rainwater | Serial | 74 | ||
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Author | Doulgeris, C.; Tziritis, E.; Pisinaras, V.; Panagopoulos, A.; Külls, C. | ||||
Title | Prediction of seawater intrusion to coastal aquifers based on non-dimensional diagrams | Type | Report | ||
Year | 2020 | Publication | Abbreviated Journal | ||
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Publisher | Copernicus Meetings | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | THL @ christoph.kuells @ doulgeris2020prediction | Serial | 202 | ||
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Author | Edmunds, W.M. | ||||
Title | Bromine geochemistry of british groundwaters | Type | Journal Article | ||
Year | 1996 | Publication | Mineralogical Magazine | Abbreviated Journal | |
Volume | 60 | Issue | 399 | Pages | 275-284 |
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Abstract | \textlessp\textgreater The concentrations of Br in potable groundwaters in the United Kingdom range from 60 to 340 µg 1 \textlesssup\textgreater-1\textless/sup\textgreater . The occurrence of Br is described in terms of the Br/Cl weight ratio which enables small changes in bromide concentrations to be assessed in terms of salinity. Median values of Br/Cl in groundwaters range from 2.60 to 5.15 × 10 \textlesssup\textgreater−3\textless/sup\textgreater compared with a sea water ratio of 3.47× 10 \textlesssup\textgreater−3\textless/sup\textgreater . In recent shallow groundwaters the Br/Cl ratio is rather variable in response to a range of natural and anthropogenic inputs (marine and industrial aerosols, industrial and agricultural chemicals including road salt). Some slight enrichment in Br/Cl also occurs naturally during infiltration as a result of biogeochemical processes. \textless/p\textgreater | ||||
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ISSN | 0026-461x | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | THL @ christoph.kuells @ Edmunds1996 | Serial | 20 | ||
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Author | Edwards, P.J.; Williard, K.W.J.; Schoonover, J.E. | ||||
Title | Fundamentals of watershed hydrology | Type | Journal Article | ||
Year | 2015 | Publication | Journal of contemporary water research & education | Abbreviated Journal | |
Volume | 154 | Issue | 1 | Pages | 3-20 |
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Publisher | Wiley Online Library | Place of Publication | Editor | ||
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Call Number | THL @ luqianxue.zhang @ edwards2015fundamentals | Serial | 101 | ||
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