At the same time, they represent the largest freshwater biome. Groundwater ecosystems are dark, extremely low in energy but contain an unexpectedly high diversity of living forms showing characteristic adaptive features. Triggered by an improved interdisciplinarity, comprehensive sampling techniques and strategies, and current developments in molecular biology as well as statistical analysis, groundwater ecology gained momentum slowly catching up with research in surface aquatic ecosystems.
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Groundwater ecosystems play a crucial role in the intermediate storage and re cycling of matter, particularly carbon and nutrients. Wetlands, lakes and rivers are in intense contact and exchange with groundwater systems and often depend on groundwater in high quantity and quality. Besides, groundwater is our most essential resource for drinking water. In our research we have a focus on biogeochemical processes e.
We are interested in the distribution patterns of groundwater microbial and faunal communities. Toggle navigation. Information for Most searched-for services Depending by the level of contaminant toxicity, a goal might be to reduce the toxicity for a period of time. Further, the remediation process might be monitored which is indicative to detect if the sources of contamination are still present and if remediation measures to reduce toxicity are efficient for supporting a viable ecological community. Groundwater species once selected to be used in toxicity tests are valuable bioindicators for groundwater health monitoring and in identifying and adjusting the water quality standards threshold values for specific compounds.
The ecotoxicity tests in ecological risk assessment involve the identification of chemical threats to environment by studing their toxic effects on target organisms. For surface waters the standard organisms tests are algae, fishes and aquatic invertebrates. For groundwater, in the absence of the first two groups, the target species are invertebrates and among them the crustaceans. Subterranean crustaceans are ecologically of three types, stygoxenes species transported accidentaly in groundwater by surface water infiltration , stygophyles surface species but with abilities to leave in groundwater part of their life-cycle and stygobionts obligate dwellers which lives exclusively in groundwater Gibert et al.
The stygobites as true groundwater dwellers have significant atributes making them suitable for toxicity bioassays i.
When compared to surface species the stygobites shows specific adaptations to fit in the specific habitat conditions and harsh life in the subterranean waters: morphologic characters i. Because of these strict specializations they are highly sensitive to any disturbance in their environment both quality and quantity. One of the critical issue in groundwater ecology tests is that standard ecotoxicological bioassays applied to surface water organisms do not seem apprropiate for groundwater species.
Hence the primary steps is the development of the protocol and selecting the most appropiate endpoints. Previous ecotoxicity tests using stygobites as target species suggest that are significant differences in sensitivity among surface and groundwater species even if they are taxonomically relatives i. The laboratory tests indicated for example that stygobites isopod Proasellus cavaticus are more tolerant to Cr and Cu than the surface species Proasellus coxalis , whereas for KCl and KNO 3 the the former are more sensitive.
The harpacticoids Parastenocaris german ica appear highly sensitive to fungicide the Thiram, ammonia and aldicarb that alter post-naupliar development in acute tests. We specifically aims to tackle the lethal and sublethal concentrations of selecte contaminants on both surface and groundwater crustacean invertebrates and assess the toxic stress effects on their physiologic i.
Our study targets to contribute to current attempts in establishing threshold values for emerging compounds in surface waters rivers and groundwaters and to advance the assessment methods to asess the ecological risk in aquatic ecosystems. Avramov M. A new bioassay for the ecotoxicological testing of VOCs on groundwater invertebrates and the effects of toluene on Niphargus inopinatus. Aquatic Toxicology, Crisp T.
Environmental endocrine disruption: an effects assessment and analysis.
Ecology and management of subsurface groundwater dependent ecosystems in Australia – a review
Environmenatl Health Perspect ive , Suppl 1 — Danielopol D. Present state and future prospects for groundwater ecosystems.
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Groundwater ecology and biodiversity | British Geological Survey (BGS)
Di Marzio W. Relative Sensitivity of Hyporheic Copepods to Chemicals.
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Bulletin of Environmental Contamination and Toxicolog y, 82 4 : — Developmental endpoints of chronic exposure to suspected endocrine-disrupting chemicals on benthic and hyporheic freshwater copepods. Ecotoxicology and Environmental Safety , 86 - Di Marzio, M. Baratti, A. Dedonno, A. Iannucci, S. Cannicci, G. Messana, D. Galassi, Sensitivity of hypogean and epigean freshwater copepods to agricultural pollutants. Environmental Science Pollution Research , 21 6 : Di Lorenzo T. Ammonium threshold values for groundwater quality in the EU may not protect groundwater fauna: evidence from an alluvial aquifer in Italy.
Hydrobiologia , - European Environment Agency, Copenhagen, Denmark. Gibert J. Basic attributes of groundwater ecosystems and prospects for research. In: Gibert, J. Stanford eds. New York.
muffsuppvafecci.gq Lillo B. Naturally occurring arsenic in groundwater and identification of the geochemical sources in the Duero Cenozoic Basin, Spain, Environmental Geology , — Griebler C. Stein, C. Kellermann, S. Berkhoff, H. Brielmann, S. Schmidt, D. Selesi, C. Steube, A.