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Environmental Monitoring and Assessment

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https://www.readbyqxmd.com/read/28785885/using-synoptic-tracer-surveys-to-assess-runoff-sources-in-an-andean-headwater-catchment-in-central-chile
#1
A Nauditt, C Soulsby, C Birkel, A Rusman, C Schüth, L Ribbe, P Álvarez, N Kretschmer
Headwater catchments in the Andes provide critical sources of water for downstream areas with large agricultural communities dependent upon irrigation. Data from such remote headwater catchments are sparse, and there is limited understanding of their hydrological function to guide sustainable water management. Here, we present the findings of repeat synoptic tracer surveys as rapid appraisal tools to understand dominant hydrological flow paths in the semi-arid Rio Grande basin, a 572-km(2) headwater tributary of the 11,696-km(2) Limarí basin in central Chile...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28785884/assessment-of-the-water-quality-monitoring-network-of-the-piabanha-river-experimental-watersheds-in-rio-de-janeiro-brazil-using-autoassociative-neural-networks
#2
Mariana D Villas-Boas, Francisco Olivera, Jose Paulo S de Azevedo
Water quality monitoring is a complex issue that requires support tools in order to provide information for water resource management. Budget constraints as well as an inadequate water quality network design call for the development of evaluation tools to provide efficient water quality monitoring. For this purpose, a nonlinear principal component analysis (NLPCA) based on an autoassociative neural network was performed to assess the redundancy of the parameters and monitoring locations of the water quality network in the Piabanha River watershed...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28785883/removal-of-micropollutants-from-sakarya-river-water-by-ozone-and-membrane-processes
#3
Fatma Büşra Yaman, Mehmet Çakmakcı, Ebubekir Yüksel, İsmail Özen, Erhan Gengeç
The removal of some pollutants in the Sakarya River was investigated in this study. Sakarya River located in Turkey flows from the northeast of Afyonkarahisar City to the Black Sea. Nineteen different micropollutants including trihalomethanes (THMs), haloacetic acids (HAAs), endocrine disrupting compound (EDC) and pharmaceuticals personal care product (PPCP) groups, and water quality parameters such as dissolved organic carbon (DOC), ultraviolet absorbance at 254 nm wavelength (UV254), hardness, and conductivity values were examined...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28780674/assessment-of-changes-in-formations-of-non-forest-woody-vegetation-in-southern-denmark-based-on-airborne-lidar
#4
Ioannis Angelidis, Gregor Levin, Ramón Alberto Díaz-Varela, Radek Malinowski
LiDAR (Light Detection and Ranging) is a remote sensing technology that uses light in the form of pulses to measure the range between a sensor and the Earth's surface. Recent increase in availability of airborne LiDAR scanning (ALS) data providing national coverage with high point densities has opened a wide range of possibilities for monitoring landscape elements and their changes at broad geographical extent. We assessed the dynamics of the spatial extent of non-forest woody vegetation (NFW) in a study area of approx...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28779429/a-bayesian-maximum-entropy-based-methodology-for-optimal-spatiotemporal-design-of-groundwater-monitoring-networks
#5
Marjan Hosseini, Reza Kerachian
This paper presents a new methodology for analyzing the spatiotemporal variability of water table levels and redesigning a groundwater level monitoring network (GLMN) using the Bayesian Maximum Entropy (BME) technique and a multi-criteria decision-making approach based on ordered weighted averaging (OWA). The spatial sampling is determined using a hexagonal gridding pattern and a new method, which is proposed to assign a removal priority number to each pre-existing station. To design temporal sampling, a new approach is also applied to consider uncertainty caused by lack of information...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28779428/odonata-larvae-as-a-bioindicator-of-metal-contamination-in-aquatic-environments-application-to-ecologically-important-wetlands-in-iran
#6
Hassan Nasirian, K N Irvine
The objectives of this study were twofold: (i) assess the bioaccumulation characteristics of a suite of metals associated with several different species of Odonata and (ii) examine Odonata species richness as a reflection of ecosystem health in two ecologically important wetlands of southwestern Iran, the Shadegan and Hawr Al Azim wetlands. Levels of arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), lead (Pb), and zinc (Zn) were determined using inductively coupled plasma optical emission spectrometry (ICP-OES) in nine different Odonata larva species...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28779427/estimation-of-the-removal-efficiency-of-heavy-metals-and-nutrients-from-ecological-drainage-ditches-treating-town-sewage-during-dry-and-wet-seasons
#7
Mathieu Nsenga Kumwimba, Bo Zhu, Diana Kavidia Muyembe
Vegetated drainage ditches (ecological drainage ditches, EDD) are commonly used for the treatment of nutrients, suspended solids, and pesticides, from agricultural lands and aquaculture effluent. However, their effectiveness to remove heavy metals/metalloids (HM/Ms) and fate remains largely unexplored. In addition, there exists some uncertainty concerning the performance of the EDD in treating HM/Ms. This study presents a thorough assessment on the removal efficiencies of HM/Ms and identifies the parameters affecting the HM/Ms removal process in the EDD receiving primary domestic sewage for 13 years...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28779426/the-use-of-cartographic-modeling-to-assess-the-impacts-of-coastal-flooding-a-case-study-of-port-said-governorate-egypt
#8
Rasha M Abou Samra
Low-set coastal areas are expected to aggravate inundation on account of sea level rise (SLR). The present study is planned to appraise the impacts of coastal flooding in Port Said city, Egypt by using remote sensing, GIS, and cartographic modeling techniques. To accomplish this scope, Landsat 8-OLI image dated 2016 and SRTM 1Arc-Second Digital Elevation Model (DEM) data were used. Landsat image was classified into seven land use and land cover (LULC) classes by using remote sensing and GIS's software. Different inundation scenarios 1...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28770432/are-estimates-of-wind-characteristics-based-on-measurements-with-pitot-tubes-and-gnss-receivers-mounted-on-consumer-grade-unmanned-aerial-vehicles-applicable-in-meteorological-studies
#9
Tomasz Niedzielski, Carsten Skjøth, Małgorzata Werner, Waldemar Spallek, Matylda Witek, Tymoteusz Sawiński, Anetta Drzeniecka-Osiadacz, Magdalena Korzystka-Muskała, Piotr Muskała, Piotr Modzel, Jakub Guzikowski, Maciej Kryza
The objective of this paper is to empirically show that estimates of wind speed and wind direction based on measurements carried out using the Pitot tubes and GNSS receivers, mounted on consumer-grade unmanned aerial vehicles (UAVs), may accurately approximate true wind parameters. The motivation for the study is that a growing number of commercial and scientific UAV operations may soon become a new source of data on wind speed and wind direction, with unprecedented spatial and temporal resolution. The feasibility study was carried out within an isolated mountain meadow of Polana Izerska located in the Izera Mountains (SW Poland) during an experiment which aimed to compare wind characteristics measured by several instruments: three UAVs (swinglet CAM, eBee, Maja) equipped with the Pitot tubes and GNSS receivers, wind speed and direction meters mounted at 2...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28770431/a-large-scale-investigation-of-the-quality-of-groundwater-in-six-major-districts-of-central-india-during-the-2010-2011-sampling-campaign
#10
Peeyush Khare
This paper investigates the groundwater quality in six major districts of Madhya Pradesh in central India, namely, Balaghat, Chhindwara, Dhar, Jhabua, Mandla, and Seoni during the 2010-2011 sampling campaign, and discusses improvements made in the supplied water quality between the years 2011 and 2017. Groundwater is the main source of water for a combined rural population of over 7 million in these districts. Its contamination could have a huge impact on public health. We analyzed the data collected from a large-scale water sampling campaign carried out by the Public Health Engineering Department (PHED), Government of Madhya Pradesh between 2010 and 2011 during which all rural tube wells and dug wells were sampled in these six districts...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28770430/effect-of-selenium-application-on-arsenic-uptake-in-rice-oryza-sativa-l
#11
Sumandeep Kaur, Dhanwinder Singh, Kuldip Singh
Alluvial aquifers of the agrarian state of Punjab of southwestern arid zone used for irrigation of rice crops are rich in arsenic concentration. In the present study, rice (Oryza sativa L.) crops were raised in pots in a greenhouse with a purpose to study whether selenium (Se) application was effective in ameliorating As uptake. The rice crop was irrigated with arsenic laced water (0, 2.5, 5.0, 10.0 μM As L(-1)) throughout the growing period, without and with selenium (0.05 and 0.10 mg kg(-1)) added through mustard biomass, grown ex situ in seleniferous soil...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28770429/impact-of-urbanization-coupled-with-drought-situations-on-groundwater-quality-in-shallow-basalt-and-deeper-granite-aquifers-with-special-reference-to-fluoride-in-nanded-waghala-municipal-corporation-nanded-district-maharashtra-india
#12
Madhnure Pandith, R D Kaplay, S S Potdar, H Sangnor, A D Rao
Rapid expansion in urbanization and industrialization coupled with recent drought conditions has triggered unplanned groundwater development leading to severe stress on groundwater resources in many urban cities of India, particularly cities like Nanded, Maharashtra. In the quest of tapping drinking water requirement, due to recent drought conditions, people from the city are piercing through entire thickness of shallow basalt aquifers to reach productive deeper granite aquifers. Earlier reports from Nanded and surrounding districts suggest that deeper granite aquifer is contaminated with fluoride (geogenic)...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28766122/study-of-macro-and-microelements-in-fish-from-the-cienfuegos-bay-relationship-with-its-content-in-sediments
#13
M Peña-Icart, E Rodrigues Pereira-Filho, L Lopes Fialho, J A Nóbrega, C Alonso-Hernández, Y Bolaños-Alvarez, A Muñoz-Caravaca, M S Pomares-Alfonso
Thirteen microelements (Al, As, Cd, Co, Cr, Cu, Fe, Li, Mn, Ni, Ti, V, and Zn) and four macroelements (Ca, K, Mg, and Na) were determined in the edible muscle tissue of fish in Cienfuegos Bay. Eight species, Albula vulpes, Diapterus rhombeus, Gerres cinereus, Haemulon carbonarium, Haemulon sciurus, Micropogonias furnieri, Kyphosus sectatrix, and Lutjanus cyanopterus were studied. The total concentrations and extracted concentrations using HCl were also determined in sediments. The quality of the analysis was guaranteed by validating the used analytical methods with certified reference materials of fish and sediments...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28766121/estimation-of-tile-drainage-contribution-to-streamflow-and-nutrient-loads-at-the-watershed-scale-based-on-continuously-monitored-data
#14
A Arenas Amado, K E Schilling, C S Jones, N Thomas, L J Weber
Nitrogen losses from artificially drained watersheds degrade water quality at local and regional scales. In this study, we used an end-member mixing analysis (EMMA) together with high temporal resolution water quality and streamflow data collected in the 122 km(2) Otter Creek watershed located in northeast Iowa. We estimated the contribution of three end-members (groundwater, tile drainage, and quick flow) to streamflow and nitrogen loads and tested several combinations of possible nitrate concentrations for the end-members...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28812178/sludge-quantification-at-water-treatment-plant-and-its-management-scenario
#15
Tarique Ahmad, Kafeel Ahmad, Mehtab Alam
Large volume of sludge is generated at the water treatment plants during the purification of surface water for potable supplies. Handling and disposal of sludge require careful attention from civic bodies, plant operators, and environmentalists. Quantification of the sludge produced at the treatment plants is important to develop suitable management strategies for its economical and environment friendly disposal. Present study deals with the quantification of sludge using empirical relation between turbidity, suspended solids, and coagulant dosing...
August 15, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28808820/benzene-contaminated-groundwater-remediation-using-calcium-peroxide-nanoparticles-synthesis-and-process-optimization
#16
Hamid Mosmeri, Ebrahim Alaie, Mahmoud Shavandi, Seyed Mohammad Mehdi Dastgheib, Saeideh Tasharrofi
Nano-size calcium peroxide (nCaO2) is an appropriate oxygen source which can meet the needs of in situ chemical oxidation (ISCO) for contaminant remediation from groundwater. In the present study, an easy to handle procedure for synthesis of CaO2 nanoparticles has been investigated. Modeling and optimization of synthesis process was performed by application of response surface methodology (RSM) and central composite rotatable design (CCRD) method. Synthesized nanoparticles were characterized by XRD and FESEM techniques...
August 14, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28804810/assessing-the-phytoavailability-of-arsenic-and-phosphorus-to-corn-plant-after-the-addition-of-an-acrylic-copolymer-to-polluted-soils
#17
Tahereh Mansouri, Ahmad Golchin, Hossein Kouhestani
Soil pollution by arsenic increases the potential risk of arsenic entrance into the food chain. The usefulness of maleic anhydride- styrene- acrylic acid copolymer on the mobility and phytoavailability of arsenic was evaluated. Treatments were the concentrations of acrylic copolymer (0, 0.05, 0.10, and 0.20% w/w) and the concentrations of soil total arsenic (0, 6, 12, 24, 48, and 96 mg kg(-1)). Sodium arsenate was added in appropriate amounts to subsamples of an uncontaminated soil to give contaminated soils with different levels of arsenic...
August 13, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28804803/comparison-of-sample-preparation-procedures-on-metal-loid-fractionation-patterns-in-lichens
#18
E M Kroukamp, T W Godeto, P B C Forbes
The effects of different sample preparation strategies and storage on metal(loid) fractionation trends in plant material is largely underresearched. In this study, a bulk sample of lichen Parmotrema austrosinense (Zahlbr.) Hale was analysed for its total extractable metal(loid) content by ICP-MS, and was determined to be adequately homogenous (<5% RSD) for most elements. Several subsets of this sample were prepared utilising a range of sample preservation techniques and subjected to a modified sequential extraction procedure or to total metal extraction...
August 13, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28803376/debris-flow-induced-topographic-changes-effects-of-recurrent-debris-flow-initiation
#19
Chien-Yuan Chen, Qun Wang
Chushui Creek in Shengmu Village, Nantou County, Taiwan, was analyzed for recurrent debris flow using numerical modeling and geographic information system (GIS) spatial analysis. The two-dimensional water flood and mudflow simulation program FLO-2D were used to simulate debris flow induced by rainfall during typhoon Herb in 1996 and Mindulle in 2004. Changes in topographic characteristics after the debris flows were simulated for the initiation of hydrological characteristics, magnitude, and affected area. Changes in topographic characteristics included those in elevation, slope, aspect, stream power index (SPI), topographic wetness index (TWI), and hypsometric curve integral (HI), all of which were analyzed using GIS spatial analysis...
August 12, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28799136/silver-nanoparticles-cause-osmoregulatory-impairment-and-oxidative-stress-in-caspian-kutum-rutilus-kutum-kamensky-1901
#20
Fatemeh F Masouleh, Bagher M Amiri, Alireza Mirvaghefi, Hossein Ghafoori, Steffen S Madsen
Silver nanoparticles (AgNPs) are increasingly used in several industrial and household products because of their antibacterial and antifungal properties. Hence, there is an inevitable risk that these chemicals may end up in aquatic biotopes and have adverse effects on the fauna. In order to assess potential health effects on aquatic organisms, this study evaluated the effects of waterborne AgNP exposure for 7 days on a set of critical stress parameters in juvenile Caspian kutum (Rutilus kutum), an economically important fish in the Caspian Sea...
August 11, 2017: Environmental Monitoring and Assessment
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