Radomir Muzikar In: Quarterly Journal of Engineering Geology and Hydrogeology, 2014 , 47 1 :111 Table of Contents 1 A toolbox for assessing the ecological water requirements of groundwater dependent ecosystems in Australia R. Conservation of trial dewatering discharge through re-injection in the Pilbara region, Western Australia 11. Williams 16 A shift in the ecohydrological state of groundwater dependent vegetation due to climate change and groundwater drawdown on the Swan Coastal Plain of Western Australia R. Sommer 18 Hydrogeochemical processes in the Pateira de Fermentelos lagoon Portugal and their impact on water quality C. Bellin 12 Groundwater recharge quantification for the sustainability of ecosystems in plains of Argentina M.
A pilot study of management initiatives at the Bookpurnong Floodplain, South Australia 21. A pilot study of management initiatives at the Bookpurnong Floodplain, South Australia V. Case studies are from Australia nine studies and Europe 12 studies from nine countries as well as Argentina, Canada and South Africa. It provides up-to-date information on crucial factors and parameters that need to be considered when studying groundwater-ecosystem relationships in different environments worldwide. In the present study, groundwater seepage to an alluvial stream and two tributary streams was examined at nine field sites using hydrological, geophysical, and geomorphological observations. The assessment of the ecological status indicates that the N and P loads to the investigated estuary should be reduced to levels corresponding to 52 and 56% of the current loads, respectively, to restore good ecological status. Of all the assumptions made in the model, the adopted values for the parameters that control the heat exchange between the water and the atmosphere are believed to be the most uncertain.
Water level fluctuations decrease with depth, and only a small percentage of the total volume of the groundwater in the basin participates in the hydrologic cycle. Eutrophication is a widespread problem in lakes and marine waters. His main research topics are modelling and monitoring porous, fractured and karstic coastal aquifers, aquifer-ocean and river-aquifer interfaces; hydraulics of water wells; groundwater dependent ecosystems and integrated water resources management. He is Vice-President ofProgramme and Science Coordination for the International Association of Hydrogeologists and Technical Director of Hydrogeologists Without Borders. Further they show that groundwater threshold values derived from environmental objectives and environmental quality standards for dependent ecosystems in some cases may be significantly lower than drinking water standards, e. Martin 17 Response of wetland vegetation to climate change and groundwater decline on the Swan Coastal Plain,Western Australia: Implications for management R. We calculate the necessary reductions in N and P loadings to the estuary for obtaining a good ecological status, which we define based on the number of days with N and P limitation, and the corresponding stream and groundwater threshold values assuming two different management options.
The flow lines of large unconfined flow systems do not cross major topographic features. Spatial and temporal heterogeneity in the flux of organic carbon in caves 6. A new multi-scale and process oriented typology integrating interactions between the three components of the hydrological continuum is proposed. Hence, lower threshold values are required in many coastal catchments in the future to ensure good status of water bodies and ecosystems. He has also focussed on legislation and water and environmental management, including the river basin management plans for Portugal. Regional climate models project increasing winter precipitation and runoff in the investigated region resulting in increasing runoff and nutrient loads to the Horsens estuary and many other coastal waters if present land use and farming practices continue. Motion of groundwater is sluggish or nil under extended flat areas, with little chance of the water being freshened.
Nutzmann 4 Artificial maintenance of groundwater levels to protect carbonate cave fauna,Yanchep,Western Australia C. Water table dynamics of a severely eroded wetland system, prior to rehabilitation, Sand River Catchment, South Africa 3. A pilot study of management initiatives at the Bookpurnong Floodplain, South Australia V. Finally, application possibilities are discussed. To facilitate monitoring and status assessment the directives allow grouping according to typologies.
Results demonstrate that the proposed methodology is operational and may be used to protect human health and the environment. Our synthesis of the published scientific literature shows three major environmental problems: 1 it can increase the concentration of hydrogen ions in freshwater ecosystems without much acid-neutralizing capacity, resulting in acidification of those systems; 2 it can stimulate or enhance the development, maintenance and proliferation of primary producers, resulting in eutrophication of aquatic ecosystems; 3 it can reach toxic levels that impair the ability of aquatic animals to survive, grow and reproduce. One purpose was to delineate sub-catchments in which nitrate concentrations in a shallow local groundwater body exceeded threshold values derived from good status objectives for the coastal ecosystems. Increased knowledge of hydrology is essential to an understanding of the water quality function of stream riparian zones. In this paper we evaluate the nitrogen N and phosphorus P concentrations of groundwater and surface water in a coastal catchment, the loadings and sources of N and P, and their effect on the ecological status of an estuary. Perez 13 Nutrient sources for green macroalgae in the Ria Formosa lagoon - assessing the role of groundwater T.
Youngs 11 Nitrogen cycle in gravel bed rivers: The effect of the hyporheic zone A. McEwan 21 Hydrodynamic interaction between gravity-driven and over-pressured groundwater flow and its consequences on soil and wetland salinisation J. Currently he is a hydrogeologist at the Grandewater Hidrogeologia Aplicada, Lda with development work in Portugal and Africa Angola and Mozambique. The calculations are performed by the combined use of empirical models and a physically based 3-D integrated hydrological model of the whole catchment. It is of value for water and environmental authorities, water managers and students. Derived groundwater threshold values for dissolved Cl and As applying drinking water standards as examples of reference values, are compared for all 14 case studies. Born in 1961 in Sardoal, Portugal, António Chambel obtained his PhD in Geology, specialising in Hydrogeology, at the University of Évora, Portugal, in 1999.
. Artificial maintenance of groundwater levels to protect carbonate cave fauna, Yanchep, Western Australia 5. Ngetar 3 Small-scale water- and nutrient-exchange between lowland River Spree Germany and adjacent groundwater J. Hydrogeochemical processes in the Pateira de Fermentelos lagoon Portugal and their impact on water quality 19. Groundwater and Ecosystems is of interest to everybody dealing with groundwater and its relationship with ecosystems.
Some comments are made on the significance of these results for the designer seeking an estimate of the peak discharge; in particular it is suggested that a one-parameter description of the instantaneous unit hydrograph may be sufficient for his purposes. Currently he is a hydrogeologist at the Grandewater — Hidrogeologia Aplicada, Lda with development work in Portugal and Africa Angola and Mozambique. Also, habitats and species have to be directly monitoring to determine their response to groundwater levels and quality Richardson et al. Groundwater resources are facing increasing pressure from consuming and contaminating activities. The interdisciplinary approach of the presented contributions is the only way to achieve good groundwater, surface water and ecological status so as to control the impact of groundwater abstraction and other human activities.