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Environment

Discrimination of tomato plants under different irrigation regimes: analysis of hyperspectral sensor data
submitted by f2060o 1 hour ago - Topic: Environment
The development and implementation of both economically and environmentally sustainable precision crop management systems can be greatly enhanced through the use of hyperspectral sensing. In this study, the potential of narrow-waveband hyperspectral observations for the discrimination of water-stressed tomato plants (Solanum lycopersicum L.) was investigated in a field experiment conducted in s...



Utility and application of SEM in delineating cause–effect relationship between ambient pollutant and fetal birth outcome
submitted by f2060o 1 hour ago - Topic: Environment
The US Environmental Protection Agency has set air quality standards for six criteria pollutants based on threshold levels that could be hazardous to human health. Interest in the potential impact of prenatal exposure to these pollutants has increased; however, validity of modeling approaches has hindered research in this area. To address the methodological concerns of the previous studies, we ...

The surface impacts of Arctic stratospheric ozone anomalies
submitted by jirechajir 2 hours ago - Topic: Environment
In the Arctic stratosphere, total column ozone in the spring can vary, from year to year, by as much as 30%. This large interannual variability, however, is absent from many present-generation climate models, in which the prescribed seasonal cycle of stratospheric ozone includes, at best, smooth multi-decadal trends. We here investigate the extent to which interannual variability in Arctic stra...

Generalized storage–reliability–yield relationships for rainwater harvesting systems
submitted by jirechajir 2 hours ago - Topic: Environment
Sizing storage for rainwater harvesting (RWH) systems is often a difficult design consideration, as the system must be designed specifically for the local rainfall pattern. We introduce a generally applicable method for estimating the required storage by using regional regression equations to account for climatic differences in the behavior of RWH systems across the entire continental United St...

Effects of thermo-erosional disturbance on surface soil carbon and nitrogen dynamics in upland arctic tundra
submitted by jirechajir 2 hours ago - Topic: Environment
Thaw of ice-rich permafrost soils on sloping terrain can trigger erosional disturbance events that displace large volumes of soil and sediment, kill and damage plants, and initiate secondary succession. We examined how retrogressive thaw slumps (RTS), a common form of thermo-erosional disturbance in arctic tundra, affected the local loss and re-accumulation of carbon (C) and nitrogen (N) pools ...



Soil heavy metal dynamics and risk assessment under long-term land use and cultivation conversion
submitted by ono 10 hours ago - Topic: Environment
Long-term agricultural development and cultivation conversions affect soil heavy metal balance and the regional environmental safety. In this study, heavy metal parameters were used to identify changes in soil properties in response to land use and cultivation conversions. The integrated soil quality index, which involves seven heavy metal indices, was proposed to assess the environmental risk ...

Life cycle analysis of management options for organic waste collected in an urban area
submitted by ono 10 hours ago - Topic: Environment
Different options for managing the organic fraction (OF) of municipal solid waste generated in a given urban area were analyzed by life cycle assessment (LCA) for different source segregation (SS) intensities ranging from 0 to 52 %. The best management option for processing the OF remaining in the residual organic fraction (ROF) for the different SS intensities was by incineration. Landfilling...


Hydrochemistry dynamics in remote mountain lakes and its relation to catchment and atmospheric features: the case study of Sabocos Tarn, Pyrenees
submitted by ono 10 hours ago - Topic: Environment
Increasing the understanding of high mountain lake dynamics is essential to use these remote aquatic ecosystems as proxies of global environmental changes. With this aim, at Sabocos, a Pyrenean cirque glacial lake or tarn, this study shows the main results of a morphological and catchment characterization, along with statistical analyses of its hydrochemical trends and their concomitant driving...

Methods for assessing the energy-saving efficiency of industrial symbiosis in industrial parks
submitted by ono 10 hours ago - Topic: Environment
The available energy resources are being depleted worldwide. Industrial symbiosis (IS) provides a promising approach for increasing the efficiency of energy utilization, with numerous studies reporting the superiority of this technology. However, studies quantifying the energy-saving efficiency of IS remain insufficient. This paper proposes an index system for the quantitative evaluation of the...


Lead removal in rats using calcium alginate
submitted by ono 10 hours ago - Topic: Environment
Lead (Pb) exposure, even at low levels, causes a variety of health problems. The aims of this study were to investigate the tissue distribution of lead in the bodies of rats, to evaluate lead removal from the internal organs and bones using calcium alginate in doses of 500, 200 and 100 mg/kg per day for 28 days and to assess the impact of calcium alginate on the level of essential elements. L...

Polybrominated diphenyl ethers listed as Stockholm Convention POPs, other brominated flame retardants and heavy metals in e-waste polymers in Nigeria
submitted by ono 10 hours ago - Topic: Environment
Polybrominated diphenyl ethers (PBDEs) were the first brominated persistent organic pollutants (POPs) listed in the Stockholm Convention. Parties to the convention are currently establishing inventories for developing action plans for the environmentally sound management of PBDE-containing materials. The major use of commercial octabromodiphenyl ether (c-OctaBDE) has been in casings from cathod...


Assessment of long-term phosphorus retention in an integrated constructed wetland treating domestic wastewater
submitted by ono 10 hours ago - Topic: Environment
Due to the nature of the phosphorus (P) removal mechanisms associated with constructed wetlands, the sustainability of P treatment is usually of high interest. As a result, a 4-year dataset from a typical multi-celled integrated constructed wetland (ICW) located at Glaslough in Co. Monaghan, Ireland was evaluated to determine the effects of long-term P loadings and hydrological inputs on P trea...

The ability of Typha domingensis to accumulate and tolerate high concentrations of Cr, Ni, and Zn
submitted by ono 10 hours ago - Topic: Environment
The tolerance and removal efficiency of Typha domingensis exposed to high concentrations of Cr, Ni, and Zn in single and combined treatments were studied. Sediment and two plants were disposed in each plastic reactor. The treatments were 100 and 500 mg L−1 of Cr, Ni, and Zn (single solutions); 100 mg L−1 Cr + Ni + Zn (multi-metal solutions) and 500 mg L−1 Cr + Ni + Z...

Feasibility of treating aged polycyclic aromatic hydrocarbons (PAHs)-contaminated soils using ethyl lactate-based Fenton treatment via parametric and kinetic studies
submitted by ono 10 hours ago - Topic: Environment
This study focuses on the feasibility of treating aged polycyclic aromatic hydrocarbons (PAHs)-contaminated soils using ethyl lactate (EL)-based Fenton treatment via a combination of parametric and kinetic studies. An optimised operating condition was observed at 66.7 M H2O2 with H2O2/Fe2+ of 40:1 for low soil organic carbon (SOC) content and mildly acidic soil (pH 6.2), and 10:1 for high SOC ...

Mining in New Caledonia: environmental stakes and restoration opportunities
submitted by ono 10 hours ago - Topic: Environment
New Caledonia is a widely recognised marine and terrestrial biodiversity hot spot. However, this unique environment is under increasing anthropogenic pressure. Major threats are related to land cover change and include fire, urban sprawling and mining. Resulting habitat loss and fragmentation end up in serious erosion of the local biodiversity. Mining is of particular concern due to its economi...