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Title: High Resolution In-situ Monitoring of Hyporheic Zone Biogeochemistry
Author: J W Bridge
Author: Environment Agency
Document Type: Monograph
Annotation: Environment Agency Project ID:EAPRJOUT_1570, Representation ID: 549, Object ID: 2714
Fulfilling the objectives of the Water Framework Directive (2000/60/EU) requires research in the hyporheic zone to develop: - better methods to assess mass flux across the groundwater-surface water interface; - the ability to predict the significance of attenuation processes within the hyporheic zone; - the ability to link hyporheic and/or benthic chemical conditions and ecological health; - reliable and transferable conceptual models of flow and attenuation processes at the groundwater-surface water interface. Essential to meeting these needs is better quality and resolution of biogeochemical data gathered from the hyporheic zone. Recent years have seen a rapid growth in the development and use of environmental measurement devices designed to be deployed in situ in aquatic sedimentary environments. These probes offer a potential solution to the data needs of future work on the biogeochemistry of the hyporheic zone. However, to date there is no coherent overview of the range of probes available, their capabilities and/or limitations, and the problems that must be overcome to establish in situ high-resolution methods in hyporheic zone research. This report provides information required by researchers in the field who wish to use highresolution in situ techniques in the hyporheic zone. Biosensors are an increasingly widely used tool for environmental monitoring and have the advantage of being able to distinguish bioavailable chemical species from total or active concentrations. Significant technological developments in genetic modification and biomolecular science in recent years mean that the range of targets for biosensors is increasingly broad, and includes many organic pollutants, pathogens, heavy metals and standard measures, such as biological oxygen demand (BOD) and temperature. Other techniques, including optodes, fibreoptics and those of geophysics, are discussed.
Publisher: Environment Agency
Subject Keywords: Surface waterBiosensorsMeasurementsGroundwaterMonitoring
Extent: 51
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