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Science of the Total Environment

Antje Gimpel, Vanessa Stelzenmüller, Sandra Töpsch, Ibon Galparsoro, Matthew Gubbins, David Miller, Arantza Murillas, Alexander G Murray, Kemal Pınarbaşı, Guillem Roca, Robert Watret
The increasing demand for protein from aquaculture will trigger a global expansion of the sector in coastal and offshore waters. While contributing to food security, potential conflicts with other traditional activities such as fisheries or tourism are inevitable, thus calling for decision-support tools to assess aquaculture planning scenarios in a multi-use context. Here we introduce the AquaSpace tool, one of the first Geographic Information System (GIS)-based planning tools empowering an integrated assessment and mapping of 30 indicators reflecting economic, environmental, inter-sectorial and socio-cultural risks and opportunities for proposed aquaculture systems in a marine environment...
February 18, 2018: Science of the Total Environment
Jörg Prietzel, Svenja Müller, Ingrid Kögel-Knabner, Jürgen Thieme, Cherno Jaye, Daniel Fischer
We compared synchrotron-based C near-edge X-ray absorption fine structure (NEXAFS) and CPMAS13 C nuclear magnetic resonance (NMR) spectroscopy with respect to their precision and accuracy to quantify different organic carbon (OC) species in defined mixtures of soil organic matter source compounds. We also used both methods to quantify different OC species in organic surface horizons of a Histic Leptosol as well as in mineral topsoil and subsoil horizons of two soils with different parent material, stage of pedogenesis, and OC content (Cambisol: 15-30 OC mgg-1 , Podzol: 0...
February 15, 2018: Science of the Total Environment
Stijn Bruneel, Sacha Gobeyn, Pieterjan Verhelst, Jan Reubens, Tom Moens, Peter Goethals
Movement is considered an essential process in shaping the distributions of species. Nevertheless, most species distribution models (SDMs) still focus solely on environment-species relationships to predict the occurrence of species. Furthermore, the currently used indirect estimates of movement allow to assess habitat accessibility, but do not provide an accurate description of movement. Better proxies of movement are needed to assess the dispersal potential of individual species and to gain a more practical insight in the interconnectivity of communities...
February 15, 2018: Science of the Total Environment
Laura Concostrina-Zubiri, Isabel Martínez, Adrián Escudero
No abstract text is available yet for this article.
February 15, 2018: Science of the Total Environment
Chen Lin, Ronghua Ma, Junfeng Xiong
The physicochemical properties of surface soil play a key role in the fate of watershed non-point source pollution. Special emphasis is needed to identify soil properties that are sensitive to both particulate P (PP) pollution and dissolved P (DP) pollution, which is essential for watershed environmental management. The Chaohu Lake basin, a typical eutrophic lake in China, was selected as the study site. The spatial features of the Non-point Source (NPS) PP loads and DP loads were calculated simultaneously based on the integration of sediment delivery distributed model (SEDD) and pollution loads (PLOAD) model...
February 15, 2018: Science of the Total Environment
Lu Wang, Hualin Wang, Xiurong Chen, Youjun Zhuang, Zeya Yu, TianJun Zhou
Chlorella vulgaris was cultivated in the gradually increased proportion of toxic sludge extracts for acclimation, which was obtained from SBR treated synthetic wastewater containing mixed chlorophenols (2,4,6-trichlorophenol and 4-chlorophenol). The growth of C. vulgaris was obviously improved after acclimation with the cell number in the 100% sludge group was 22.75±0.85∗106 cellmL-1 , which was relatively more than the BG11 control group's (20.80±0.35∗106 cellmL-1 ) and apparently over the 100% sludge group (10...
February 15, 2018: Science of the Total Environment
Botian Zhou, Mingsheng Shang, Guoyin Wang, Sheng Zhang, Li Feng, Xiangnan Liu, Ling Wu, Kun Shan
Harmful algal blooms are now widely recognised as a severe threat to freshwater ecosystems, particularly in semi-fluvial environments created by river damming. Given the high spatial and temporal variability of cyanobacterial blooms, remote sensing is more suitable than conventional field surveys in monitoring blooms. However, the majority of existing algorithms cannot distinguish cyanobacterial blooms from eukaryotic algal blooms by extracting spectral features in the remote-sensing reflectance (Rrs ). In this study, in situ Rrs spectra of cyanobacterial and green algal blooms in Lakes Gaoyang, Hanfeng and Changshou of the Three Gorges Reservoir (TGR) in China were recorded...
February 15, 2018: Science of the Total Environment
Jasmin Schiefer, Georg J Lair, Christopher Lüthgens, Eva Maria Wild, Peter Steier, Winfried E H Blum
During COP 21 in Paris 2015, several states and organizations agreed on the "4/1000" initiative for food security and climate. This initiative aims to increase world's soil organic carbon (SOC) stocks by 4‰ annually. The influence of soil development status on SOC dynamics is very important but usually not considered in studies. We analyse SOC accumulation under forest, grassland and cropping systems along a soil age gradient (10-17,000years) to show the influence of soil development status on SOC increase...
February 15, 2018: Science of the Total Environment
Berrin Tansel, Daria Boglaienko
Light hydrophobic liquids (LHLs) can be submerged in water with granular particles by forming particle encapsulated liquid sacks. Formation and submergence of granular encapsulated LHL sacks can be an effective method for capturing and controlling the fate of floating oils. However, formation characteristics of the LHL sacks and effect of LHL viscosity on their behavior are not well understood. In this study, we examined the encapsulation characteristics of LHL sacks depending on liquid viscosity. Silicone oils with viscosities ranging from 10cSt to 1000cSt were used as the LHLs...
February 15, 2018: Science of the Total Environment
M E Becherucci, M L Jaubet, M A Saracho Bottero, E N Llanos, R Elías, G V Garaffo
The sewage pollution impact over coastal environment represents one of the main reasons explaining the deterioration of marine coastal ecosystems around the globe. This paper aims to detect promptly a putative sewage pollution impact in a Southwestern Atlantic coastal area of Argentina as well as to identify a straightforward way for monitoring, based on the relative abundance coverage of the intertidal epilithic taxa. Four sampling sites were distributed at increased distances from the sewage outfall where the cover of individual epilithic species was visually estimated...
February 15, 2018: Science of the Total Environment
Fulvio Capodici, Giuseppe Ciraolo, Simone Cosoli, Antonino Maltese, M Cristina Mangano, Gianluca Sarà
Chlorophyll-a (CHL-a) and sea surface temperature (SST) are generally accepted as proxies for water quality. They can be easily retrieved in a quasi-near real time mode through satellite remote sensing and, as such, they provide an overview of the water quality on a synoptic scale in open waters. Their distributions evolve in space and time in response to local and remote forcing, such as winds and currents, which however have much finer temporal and spatial scales than those resolvable by satellites in spite of recent advances in satellite remote-sensing techniques...
February 15, 2018: Science of the Total Environment
Sandra Hille, Dagmar Kappel Andersen, Brian Kronvang, Annette Baattrup-Pedersen
Vegetated buffer strips constitute a transition zone between terrestrial and aquatic ecosystems and provide several ecosystem services. Buffer strips are often applied as a mitigation measure against diffuse pollution in agricultural areas, primarily because they may retain nutrients and in this way help protect the aquatic environment. Additionally, they can improve biodiversity in an otherwise homogenous landscape and may therefore have a value in their own right. In the present study, we characterized the structural and functional features of the vegetation in Danish buffer strips using a nationwide dataset to explore: i) their floristic quality in terms of species diversity and conservation value and ii) based on their functional characteristics, their potential to retain nutrients...
February 15, 2018: Science of the Total Environment
Jian Gao, Jie Zhang, Hong Li, Lei Li, Linghong Xu, Yujie Zhang, Zhanshan Wang, Xuezhong Wang, Weiqi Zhang, Yizhen Chen, Xi Cheng, Hao Zhang, Liang Peng, Fahe Chai, Yongjie Wei
Volatile organic compounds (VOCs) can react with atmospheric radicals while being transported after being emitted, resulting in substantial losses. Using only observed VOC mixing ratios to assess VOC pollution, is therefore problematic. The observed mixing ratios and initial mixing ratios taking chemical loss into consideration were performed using data for 90 VOCs in the atmosphere in a typical urban area in Beijing in winter 2013 to gain a more accurate view of VOC pollution. The VOC sources, ambient VOC mixing ratios and compositions, variability and influencing factors, contributions to near-ground-ozone and health risks posed were assessed...
February 15, 2018: Science of the Total Environment
Sina Taghvaee, Mohammad H Sowlat, Amirhosein Mousavi, Mohammad Sadegh Hassanvand, Masud Yunesian, Kazem Naddafi, Constantinos Sioutas
In this study, the positive matrix factorization (PMF) model was used for source apportionment of ambient PM2.5 in two locations in the central Tehran from May 2012 through June 2013. The average PM2.5 mass concentrations were 30.9 and 33.2μg/m3 in Tohid retirement home and the school dormitory, respectively. Metals and trace elements, water-soluble ions, and PM2.5 mass concentrations were used as inputs to the model. Concentrations of elemental and organic carbon (EC and OC), and meteorological data were also used as auxiliary variables to help with the factor identification and interpretation...
February 15, 2018: Science of the Total Environment
Barend L van Drooge, Esther Marco, Joan O Grimalt
The outdoor atmospheric distributions of chlorinated volatile organic compounds (VOCs) from locations receiving the emissions of a chlor-alkali plant have been studied. Trichloroethylene and tetrachloroethylene (medians 2.4 μg/m 3 and 1.7 μg/m 3 , respectively) were the most abundant compounds, which was in accordance with the production processes from these installations. The concentrations of trichlorofluoromethane, median 1.6 μg/m 3 , are rather similar to the average levels described in general in the troposphere and cannot be attributed to this specific source...
February 14, 2018: Science of the Total Environment
Tafeng Hu, Junji Cao, Chongshu Zhu, Zhuzi Zhao, Suixin Liu, Daizhou Zhang
Many studies indicate that the atmospheric environment over the southern part of the Tibetan Plateau is influenced by aged biomass burning particles that are transported over long distances from South Asia. However, our knowledge of the particles emitted locally (within the plateau region) is poor. We collected aerosol particles at four urban sites and one remote glacier site during a scientific expedition to the southeastern Tibetan Plateau in spring 2010. Weather and backward trajectory analyses indicated that the particles we collected were more likely dominated by particles emitted within the plateau...
February 14, 2018: Science of the Total Environment
Xiaocheng Wu, Lingling Lang, Wenjun Ma, Tie Song, Min Kang, Jianfeng He, Yonghui Zhang, Liang Lu, Hualiang Lin, Li Ling
BACKGROUND: Dengue fever is an important infectious disease in Guangzhou, China; previous studies on the effects of weather factors on the incidence of dengue fever did not consider the linearity of the associations. METHODS: This study evaluated the effects of daily mean temperature, relative humidity and rainfall on the incidence of dengue fever. A generalized additive model with splines smoothing function was performed to examine the effects of daily mean, minimum and maximum temperatures, relative humidity and rainfall on incidence of dengue fever during 2006-2014...
February 14, 2018: Science of the Total Environment
Beate I Escher, Selim Aїt-Aїssa, Peter A Behnisch, Werner Brack, François Brion, Abraham Brouwer, Sebastian Buchinger, Sarah E Crawford, David Du Pasquier, Timo Hamers, Karina Hettwer, Klára Hilscherová, Henner Hollert, Robert Kase, Cornelia Kienle, Andrew J Tindall, Jochen Tuerk, Ron van der Oost, Etienne Vermeirssen, Peta A Neale
Effect-based methods including cell-based bioassays, reporter gene assays and whole-organism assays have been applied for decades in water quality monitoring and testing of enriched solid-phase extracts. There is no common EU-wide agreement on what level of bioassay response in water extracts is acceptable. At present, bioassay results are only benchmarked against each other but not against a consented measure of chemical water quality. The EU environmental quality standards (EQS) differentiate between acceptable and unacceptable surface water concentrations for individual chemicals but cannot capture the thousands of chemicals in water and their biological action as mixtures...
February 14, 2018: Science of the Total Environment
Liqi Cai, Jundong Wang, Jinping Peng, Ziqing Wu, Xiangling Tan
Plastic debris represents one of the most prevalent and persistent pollution problems in the marine environment. In particular, microplastics that are mainly degraded from larger plastic debris have become a growing environmental concern. However, studies on the degradation of plastics in the aquatic environment that hydrobios reside in have been limited, while several studies regarding the degradation of plastics have been conducted under outdoor or accelerated weathering conditions. Thus, observation of the degradation of three types of virgin plastic pellets exposed to UV irradiation in three different environments (i...
February 14, 2018: Science of the Total Environment
Pui Kwan Cheung, Lincoln Fok, Pui Lam Hung, Lewis T O Cheung
Rivers are recognised as an important source of plastic debris in the open sea. The Pearl River in China is estimated to transport 0.1milliontonnes of plastic waste to the open sea annually. However, no empirical study has been conducted to assess the plastic contamination levels in the Pearl River Estuary. Hong Kong is situated in the east of the Pearl River Estuary; its western waters are strongly influenced by river discharge, whereas the eastern waters are unaffected by the freshwater plume. In this study, we quantified the neustonic plastic debris density in the western and eastern waters of Hong Kong...
February 14, 2018: Science of the Total Environment
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