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Environmental Monitoring and Assessment

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https://www.readbyqxmd.com/read/28435997/assessment-of-organic-pollution-of-an-industrial-river-by-synchronous-fluorescence-and-uv-vis-spectroscopy-the-fensch-river-ne-france
#1
Aziz Assaad, Steve Pontvianne, Marie-Noëlle Pons
To rapidly monitor the surface water quality in terms of organic pollution of an industrial river undergoing restoration, optical methods (UV-visible spectrometry and fluorescence) were applied in parallel to classical physical-chemical analyses. UV-visible spectra were analyzed using the maximum of the second derivative at 225 nm (related to nitrates), specific absorbance at 254 nm (SUVA254), and the spectral slope between 275 and 295 nm (S 275-295) (related to the aromaticity and molecular weight of dissolved organic carbon)...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28432511/environmental-management-zoning-for-coal-mining-in-mainland-china-based-on-ecological-and-resources-conditions
#2
Haiqing Geng, Fan Chen, Zhiyuan Wang, Jie Liu, Weihua Xu
The purpose of this research is to establish an environmental management zoning for coal mining industry which is served as a basis for making environmental management policies. Based on the specific impacts of coal mining and regional characteristics of environment and resources, the ecological impact, water resources impact, and arable land impact are chose as the zoning indexes to construct the index system. The ecological sensitivity is graded into three levels of low, medium, and high according to analytical hierarchy processes and gray fixed weight clustering analysis, and the water resources sensitivity is divided into five levels of lower, low, medium, high, and higher according to the weighted sum of sub-indexes, while only the arable land sensitive zone was extracted on the basis of the ratio of arable land to the county or city...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28432510/epilithic-diatom-assemblages-and-their-relationships-with-environmental-variables-in-the-nil%C3%A3-fer-stream-basin-bursa-turkey
#3
Didem Karacaoğlu, Nurhayat Dalkıran
Patterns of epilithic diatom species distribution in relation to environmental variables from 12 sampling sites on the main stream and some of its tributaries in the Nilüfer Stream Basin were determined using multivariate statistical techniques. The stream basin has been heavily influenced by anthropogenic effects. The upper part of the basin that is distant from pollution sources mostly has a spring water quality, while the lower part where the stream flows through the urban area and receives domestic and industrial wastewater has a quite low quality...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28432509/assessment-of-cadmium-content-of-potato-grown-in-weining-county-guizhou-province-china
#4
Yuping Zhang, Yu E Wu, Anming Yang, Jun Wang, Kankan Zhang, Deyu Hu
A total of 54 soil and 54 potato samples have been collected from Weining County to evaluate the accumulation of cadmium in potatoes. The concentrations of the total Cd and the available Cd in the soil samples have been detected. The total concentrations of Cd were from 0.41 to 10.0 mg/kg with an average value of 2.60 mg/kg in soil. The concentrations of available Cd in the soil were 0.07 to 3.47 mg/kg with an average value of 0.59 mg/kg. The concentration of the available Cd showed a good linear positive correlation with the total Cd content in the soil...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28432508/estimation-of-environmental-flow-incorporating-water-quality-and-hypothetical-climate-change-scenarios
#5
Bendangtola Walling, Shushobhit Chaudhary, C T Dhanya, Arun Kumar
Environmental flows (Eflow, hereafter) are the flows to be maintained in the river for its healthy functioning and the sustenance and protection of aquatic ecosystems. Estimation of Eflow in any river stretch demands consideration of various factors such as flow regime, ecosystem, and health of river. However, most of the Eflow estimation studies have neglected the water quality factor. This study urges the need to consider water quality criterion in the estimation of Eflow and proposes a framework for estimating Eflow incorporating water quality variations under present and hypothetical future scenarios of climate change and pollution load...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28432507/study-of-the-potential-of-barnyard-grass-for-the-remediation-of-cd-and-pb-contaminated-soil
#6
Jianling Xu, Qiongyao Cai, Hanxi Wang, Xuejun Liu, Jing Lv, Difu Yao, Yue Lu, Wei Li, Yuanyuan Liu
In this study, the microwave digestion method was used to determine total cadmium (Cd) and lead (Pb) concentrations, the BCR method was used to determine different states of Cd and Pb, and atomic absorption spectroscopy (AAS) and inductively coupled plasma optical emission spectrometry (ICP-OES) were used to determine Cd and Pb concentrations in simulated soil and barnyard grass before and after planting barnyard grass to provide a theoretical basis for the remediation of Cd- and Pb-contaminated soil. The results showed that the bioconcentration factor changes with different Cd concentrations are relatively complex and that the removal rate increases regularly...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28429251/air-water-co2-and-ch4-fluxes-along-a-river-reservoir-continuum-case-study-in-the-pengxi-river-a-tributary-of-the-yangtze-river-in-the-three-gorges-reservoir-china
#7
Yang Huang, Lindsey M W Yasarer, Zhe Li, Belinda S M Sturm, Zengyu Zhang, Jinsong Guo, Yu Shen
Water surface greenhouse gas (GHG) emissions in freshwater reservoirs are closely related to limnological processes in the water column. Affected by both reservoir operation and seasonal changes, variations in the hydro-morphological conditions in the river-reservoir continuum will create distinctive patterns in water surface GHG emissions. A one-year field survey was carried out in the Pengxi River-reservoir continuum, a part of the Three Gorges Reservoir (TGR) immediately after the TGR reached its maximum water level...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28429250/exploring-geospatial-techniques-for-spatiotemporal-change-detection-in-land-cover-dynamics-along-soan-river-pakistan
#8
Hafsa Bashir, Sheikh Saeed Ahmad
Classification of land cover dynamics via satellite imagery has played indispensible services in developing effective management strategies for evaluation and management of water resources. The present study employed geospatial techniques, i.e., integrated GIS and remote sensing for effectual land change study. Hybrid classification approach was applied using ERDAS Imagine 11 to detect changes in land cover dynamics using satellite imagery of Landsat 4, 5 TM, Landsat 7 ETM, and Landsat 8 OLI for the years of 1992, 2002, and 2015, respectively...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28425071/micro-spatial-variation-of-elemental-distribution-in-estuarine-sediment-and-their-accumulation-in-mangroves-of-indian-sundarban
#9
Madhurima Bakshi, S S Ram, Somdeep Ghosh, Anindita Chakraborty, M Sudarshan, Punarbasu Chaudhuri
This work describes the micro-spatial variation of elemental distribution in estuarine sediment and bioaccumulation of those elements in different mangrove species of the Indian Sundarbans. The potential ecological risk due to such elemental load on this mangrove-dominated habitat is also discussed. The concentrations of elements in mangrove leaves and sediments were determined using energy-dispersive X-ray fluorescence spectroscopy. Sediment quality and potential ecological risks were assessed from the calculated indices...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28425070/h-emibagrus-sp-as-a-potential-bioindicator-of-hazardous-metal-pollution-in-selangor-river
#10
Nor Shahirul Umirah Idris, Kah Hin Low, Isa Baba Koki, Ahmad Firdaus Kamaruddin, Kaharudin Md Salleh, Sharifuddin Md Zain
The spatial distributions of Na, Mg, K, Ca, Cr, Fe, Ni, Cu, Zn, As, Se and Pb in Hemibagrus sp. from Selangor River and a reference site were determined with inductively coupled plasma-mass spectrometer, in comparison to the levels in their surrounding water body and sediments. The results demonstrated significant differences in elemental accumulation pattern in different fish tissues originated from both sites. The variations observed were mainly subjected to their metabolic activities, and also the influence of the surrounding medium...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28417282/coastal-modification-of-a-scene-employing-multispectral-images-and-vector-operators
#11
Jorge Lira
Changes in sea level, wind patterns, sea current patterns, and tide patterns have produced morphologic transformations in the coastline area of Tamaulipas Sate in North East Mexico. Such changes generated a modification of the coastline and variations of the texture-relief and texture of the continental area of Tamaulipas. Two high-resolution multispectral satellite Satellites Pour l'Observation de la Terre images were employed to quantify the morphologic change of such continental area. The images cover a time span close to 10 years...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28412769/applicability-of-geochemical-techniques-and-artificial-sweeteners-in-discriminating-the-anthropogenic-sources-of-chloride-in-shallow-groundwater-north-of-toronto-canada
#12
Esmaeil Khazaei, William Milne-Home
Elevated levels of chloride concentration due to anthropogenic activities including the road salts, septic effluent and agricultural sources are common in shallow groundwater of the recent glacial deposits north of Toronto, Ontario, Canada. Identifying suitable techniques for discriminating the source of the chloride concentration helps to better plan the protection of groundwater in the area. This paper examines the applicability of geochemical techniques with emphasis on Panno et al. (Ground Water 44: 176-187, 2006) and Mullaney et al...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28411320/addition-of-straw-from-hyperaccumulator-plants-to-cadmium-contaminated-soil-increases-cadmium-uptake-by-loquat-seedlings
#13
Lijin Lin, Ming'an Liao, Xiulan Lv, Dong Liang, Hui Xia, Jin Wang, Xun Wang
The straw from three different cadmium (Cd) hyperaccumulators (Galinsoga parviflora, Youngia erythrocarpa, and Solanum photeinocarpum) was added to Cd-contaminated soil, and its effects on plant growth and Cd accumulation in loquat seedlings were evaluated. Straw from each of G. parviflora, Y. erythrocarpa, and S. photeinocarpum was added to Cd-contaminated soil before planting seedlings of two varieties of loquat (Dawuxing and Chuanzao). Addition of straw from G. parviflora and S. photeinocarpum increased the root and shoot biomasses of both loquat varieties, compared with that in the control...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28411319/fifty-year-spatiotemporal-analysis-of-landscape-changes-in-the-mont-saint-hilaire-unesco-biosphere-reserve-quebec-canada
#14
Marc Béliveau, Daniel Germain, Ana-Neli Ianăş
Diachronic analysis with a GIS-based classification of land-use changes based on aerial photographs, orthophotos, topographic maps, geotechnical reports, urban plans, and using landscape metrics has permitted insight into the driving forces responsible for landscape fragmentation in the Mont Saint-Hilaire (MSH) Biosphere Reserve over the period 1958-2015. Although the occurrence of exogenous factors, such as extreme weather and fires, can have a significant influence on the fragmentation of the territory in time and space, the accelerated development of the built environment (+470%) is nevertheless found to be primarily responsible for landscape fragmentation and the loss of areas formerly occupied by orchards, agriculture, and woodlands...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28411318/long-term-grazing-effects-on-vegetation-characteristics-and-soil-properties-in-a-semiarid-grassland-northern-china
#15
Jing Zhang, Xiaoan Zuo, Xin Zhou, Peng Lv, Jie Lian, Xiyuan Yue
Understanding the responses of vegetation characteristics and soil properties to grazing disturbance is useful for grassland ecosystem restoration and management in semiarid areas. Here, we examined the effects of long-term grazing on vegetation characteristics, soil properties, and their relationships across four grassland types (meadow, Stipa steppe, scattered tree grassland, and sandy grassland) in the Horqin grassland, northern China. Our results showed that grazing greatly decreased vegetation cover, aboveground plant biomass, and root biomass in all four grassland types...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28409353/assessment-of-spatial-distribution-of-soil-heavy-metals-using-ann-ga-mslr-and-satellite-imagery
#16
Arman Nadari, Mohmmad Amir Delavar, Babak Kaboudin, Mohammad Sagdegh Askari
This study aims to assess and compare heavy metal distribution models developed using stepwise multiple linear regression (MSLR) and neural network-genetic algorithm model (ANN-GA) based on satellite imagery. The source identification of heavy metals was also explored using local Moran index. Soil samples (n = 300) were collected based on a grid and pH, organic matter, clay, iron oxide contents cadmium (Cd), lead (Pb) and zinc (Zn) concentrations were determined for each sample. Visible/near-infrared reflectance (VNIR) within the electromagnetic ranges of satellite imagery was applied to estimate heavy metal concentrations in the soil using MSLR and ANN-GA models...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28401367/perfluoroalkyl-acids-pfaas-in-sediments-from-rivers-of-the-pearl-river-delta-southern-china
#17
Baolin Liu, Hong Zhang, Juying Li, Weihua Dong, Liuwei Xie
Having been largely used in industrial and household products, perfluoroalkyl acids (PFAAs) appear in environmental and biological systems with prevalence and persistence and have raised great concern in recent years. The present study is aimed at studying concentrations and composition profiles of 16 PFAAs in surface sediments collected from 51 sampling locations in 4 main rivers of the Pearl River Delta, one of the economy-developed areas in China. The total PFAA concentrations (∑ PFAAs) were determined in a wide range of 1...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28397139/the-land-productivity-dynamics-trend-as-a-tool-for-land-degradation-assessment-in-a-dryland-ecosystem
#18
Oguz Baskan, Orhan Dengiz, İnci Turan Demirag
The aim of this study was to produce a land productivity dynamic map of a degraded catchment located in dryland ecosystem via a land degradation assessment using three indicators, namely land use, land productivity, and soil organic carbon density. The study was conducted in the Mogan Catchment, Turkey, between 2000 and 2010. The study embraced the current trend for assessing ecosystem services over wide areas. For this purpose, satellite images were used to determine changes in land use and vegetation density...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28391451/biochemical-effects-of-pollutant-exposure-in-fish-from-urban-creeks-in-greenville-sc-usa
#19
Peter van den Hurk, Dennis C Haney
The city of Greenville, SC is a rapidly expanding urban area located on the Reedy River in the upstate of South Carolina. Historical and current point-source pollutants and runoff from impermeable surfaces have resulted in a contaminated river environment, which through previous studies was demonstrated to be reflected in biological effects in fish species in the river. Because it was not known how much smaller tributaries in the urbanized area were contributing to the pollution of the main stem of the Reedy River, we collected fish (bluehead chub (Nocomis leptocephalus), creek chub (Semotilus atromaculatus), bluegill (Lepomis macrochirus), and redbreast sunfish (Lepomis auritus)) from five smaller urban creeks in the Greenville area and measured several biomarkers of exposure in these animals...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28389848/concentrations-of-trace-elements-and-iron-in-the-arctic-soils-of-belyi-island-the-kara-sea-russia-patterns-of-variation-across-landscapes
#20
D V Moskovchenko, A N Kurchatova, N N Fefilov, A A Yurtaev
The concentrations of several trace elements and iron were determined in 26 soil samples from Belyi Island in the Kara Sea (West Siberian sector of Russian Arctic). The major types of soils predominating in the soil cover were sampled. The concentrations of trace elements (mg kg(-1)) varied within the following ranges: 119-561 for Mn, 9.5-126 for Zn, 0.082-2.5 for Cd, <0.5-19.2 for Cu, <0.5-132 for Pb, 0.011-0.081 for Hg, <0.5-10.3 for Co, and 7.6-108 for Cr; the concentration of Fe varied from 3943 to 37,899 mg kg(-1)...
May 2017: Environmental Monitoring and Assessment
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