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91.
Agelos Papaioannou Athina Mavridou Christos Hadjichristodoulou Panagiotis Papastergiou Olga Pappa Eleni Dovriki Ioannis Rigas 《Environmental monitoring and assessment》2010,170(1-4):87-97
Three representative areas (lowland, semi-mountainous, and coastal) have been selected for the collection of drinking water samples, and a total number of 28 physical, chemical, and biological parameters per water sample have been determined and analyzed. The mean values of the physical and chemical parameters were found to be within the limits mentioned in the 98/83/EEC directive. The analysis of biological parameters shows that many of the water samples are inadequate for human consumption because of the presence of bacteria. Cluster analysis (CA) first was used to classify sample sites with similar properties and results in three groups of sites; discriminant analysis (DA) was used to construct the best discriminant functions to confirm the clusters determined by CA and evaluate the spatial variations in water quality. The standard mode discriminant functions, using 17 parameters, yielded classification matrix correctly assigning 96.97% of the cases. In the stepwise mode, the DA produced a classification matrix with 96.36% correct assignments using only ten parameters (EC, Cl???, NO3 ???, HCO3 ???, CO3 ???2, Ca?+?2, Na?+?, Zn, Mn, and Pb). CA and factor analysis (FA) are used to characterize water quality and assist in water quality monitoring planning. CA proved that two major groups of similarity (six subclusters) between 17 physicochemical parameters are formed, and FA extracts six factors that account for 66.478% of the total water quality variation, when all samples’ physicochemical data set is considered. It is noteworthy that the classification scheme obtained by CA is completely confirmed by principal component analysis. 相似文献
92.
Assessing the zooplankton community and environmental factors in a Mediterranean wetland 总被引:1,自引:0,他引:1
Ifigenia I. Kagalou Alexia Kosiori Ioannis D. Leonardos 《Environmental monitoring and assessment》2010,170(1-4):445-455
Mediterranean wetlands represent unique repositories of biodiversity, but these ecosystems are increasingly threatened by human-induced habitat loss. Seventy percent of Greek wetlands (ponds, mires, marshes, etc.) have been lost in the past 80 years due to human intervention. In Greece habitat types of mires, listed in Directive 92/43/EEC, have been recorded in a few locations, one of the most important is Kalodiki wetland. Eutrophication key elements were determined at four sampling stations throughout 1 year in order to monitor the trophic conditions. Moreover, the zooplankton community was described as biological element relevant in the assessment of the ecological status of Kalodiki wetland. Kalodiki wetland exhibits nutrient concentrations corresponding to eutrophic conditions while according to chlorophyll-a values it is classified between mesotrophic and eutrophic status depending mostly on the sampling period. As concerning zooplankton community, it appears poor in species and dominated by small-sized organisms, which is generally typical of eutrophic, disturbed systems. Differences among zooplankton assemblages over seasons as well as among sampling sites highlight the role of both abiotic and biotic factors. 相似文献
93.
Ioannis Karaouzas Elias Dimitriou Nikolaos Skoulikidis Konstantinos Gritzalis Eva Colombari 《Environmental Modeling and Assessment》2009,14(6):677-689
Ecological (biological and hydrochemical assessment) and hydrogeological (vulnerability and pollution risk mapping) tools
have been combined to assess the ecological quality and hydrogeological vulnerability of an agricultural river basin. In addition,
the applicability of the recently developed vulnerability assessment approach (COP method) in the particular environmental
conditions was tested by comparing its results with hydroecological assessment tools (i.e., pollution metrics). Five sampling
sites were selected and sampled for benthic macroinvertebrates and physicochemical variables during summer and spring. Overall,
sites ranged from moderate to poor ecological quality. The results illustrated that 26% of the study area was of moderate
pollution risk, while 65% was classified as of low and very low risk zones. However, the higher elevation zones where calcareous
rock formations are encountered presented moderate to high pollution risk that was accredited by the ecological quality assessment.
Pollution metrics facilitated from hydrochemical analysis indicated a significant association with groundwater vulnerability,
thus validating vulnerability and risk estimations. This study indicated that the particular groundwater pollution risk mapping
methodology and the water quality assessment indices can be well combined to provide an integrated evaluation tool at a catchment
scale. 相似文献
94.
This article presents a methodological approach for the formulation of control strategies capable of reducing atmospheric
pollution at the standards set by European legislation. The approach was implemented in the greater area of Thessaloniki and
was part of a project aiming at the compliance with air quality standards in five major cities in Greece. The methodological
approach comprises two stages: in the first stage, the availability of several measures contributing to a certain extent to
reducing atmospheric pollution indicates a combinatorial problem and favors the use of Integer Programming. More specifically,
Multiple Objective Integer Programming is used in order to generate alternative efficient combinations of the available policy
measures on the basis of two conflicting objectives: public expenditure minimization and social acceptance maximization. In
the second stage, these combinations of control measures (i.e., the control strategies) are then comparatively evaluated with
respect to a wider set of criteria, using tools from Multiple Criteria Decision Analysis, namely, the well-known PROMETHEE
method. The whole procedure is based on the active involvement of local and central authorities in order to incorporate their
concerns and preferences, as well as to secure the adoption and implementation of the resulting solution. 相似文献
95.
96.
Groundwater risk assessment at a heavily industrialised catchment and the associated impacts on a peri-urban wetland 总被引:4,自引:0,他引:4
Dimitriou E Karaouzas I Sarantakos K Zacharias I Bogdanos K Diapoulis A 《Journal of environmental management》2008,88(3):526-538
Industrial and agricultural activities often impose significant pressures to the groundwater quality and consequently degrade wetland ecosystems that depend mostly on subsurface water flow. Groundwater vulnerability and risk mapping is a widely used approach to assess the natural protection of aquifers and the associated pollution potential from human activities. In the particular study, the relatively new Pan-European methodology (COP method) has been applied in a highly industrialized peri-urban wetland catchment, located close to Athens city, to map the intrinsic vulnerability of the aquifer and evaluate the risk potential originating from local land uses. Groundwater analysis results for various parameters, including Phenols, PCBs and nutrients, have been used to validate the vulnerability and risk estimations while a biological assessment occurred to associate the mapping results with the wetland's ecological status. The results indicated that even though the natural protection of the aquifer is relatively high due to the dominant hydrogeologic and geomorphologic conditions, the groundwater pollution risk is considerable, mainly because of the existing hazardous land uses. The water quality of the groundwater accredited these findings and the ecological status of this peri-urban wetland also indicated significant impacts from industrial effluents. 相似文献
97.
Chemical and ecotoxicological assessment of sludge-based biosolids used for corn field fertilization
Giannakis Ioannis Emmanouil Christina Mitrakas Manassis Manakou Vasiliki Kungolos Athanasios 《Environmental science and pollution research international》2021,28(4):3797-3809
Environmental Science and Pollution Research - Sludge-based biosolids can be used for crop fertilization and for soil enrichment with organic matter. The prerequisites for their application are... 相似文献
98.
Environmental Economics and Policy Studies - Reducing air pollution is a major policy challenge, especially in densely populated urban areas where human exposure to emissions is considerable. This... 相似文献
99.
Wolfgang Babisch Danny Houthuijs Gran Pershagen Ennio Cadum Klea Katsouyanni Manolis Velonakis Marie-Louise Dudley Heinz-Dieter Marohn Wim Swart Oscar Breugelmans Gsta Bluhm Jenny Selander Federica Vigna-Taglianti Salvatore Pisani Alexandros Haralabidis Konstantina Dimakopoulou Ioannis Zachos Lars Jrup HYENA Consortium 《Environment international》2009,35(8):1169-1176
In the HYENA study (HYpertension and Exposure to Noise near Airports) noise annoyances due to aircraft and road traffic noise were assessed in subjects that lived in the vicinity of 6 major European airports using the 11-point ICBEN scale (International Commission on Biological Effects of Noise). A distinction was made between the annoyance during the day and during the night. Lden and Lnight were considered as indicators of noise exposure. Pooled data analyses showed clear exposure–response relationships between the noise level and the noise annoyance for both exposures. The exposure–response curves for road noise were congruent with the EU standard curves used for predicting the number of highly noise annoyed subjects in European communities. Annoyance ratings due to aircraft noise, however, were higher than predicted by the EU standard curves. The data supports other findings suggesting that the people's attitude towards aircraft noise has changed over the years, and that the EU standard curve for aircraft noise should be modified. 相似文献
100.
Atta Rasool Tangfu Xiao Abida Farooqi Muhammad Shafeeque Yizhang Liu Muhammad Aqeel Kamran Ioannis A. Katsoyiannis Syed Ali Musstjab Akber Shah Eqani 《Environmental geochemistry and health》2017,39(4):847-863
In the present study, the tube well water quality and the associated health risks, emphasizing on arsenic contamination, were investigated in rural and urban samples from Tehsil Mailsi located in Punjab, Pakistan. Arsenic concentrations (μg/L) were ranged from 12 to 448.5 and which exceeded the WHO recommended limit (10 μg/L) in all cases. The calculated average daily dose (3.3 × 10?0.4 to 1.2 × 10?0.2 mg/kg day) and hazard quotient (1.1–40) reflected the potential health risk to local population due to tube well water consumption as drinking purpose. Sodium percent (Na%), sodium absorption ratio, residual sodium carbonate, Kelly’s index and magnesium absorption ratio were also determined to assess the suitability of tube well water for irrigation purpose. The resulting piper plot revealed the Na–Ca–HCO3 type water chemistry of the area and generally alkaline environment. The spatial distribution of arsenic in the tube well waters pinpoints the significant contribution of anthropogenic activities to arsenic pollution. Nevertheless, different statistical tools, including principal component analysis, hierarchical cluster analysis and correlation matrices, revealed the contribution of both natural and anthropogenic activities and alkaline type of aquifers toward the high level of arsenic contamination. 相似文献