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101.
Drăghia Lavinia Paula Lukinich-Gruia Alexandra Teodora Oprean Camelia Pavlović Nikola M. Păunescu Virgil Tatu Călin Adrian 《Environmental geochemistry and health》2021,43(10):4163-4178
Environmental Geochemistry and Health - Aristolochic acid I (AAI) is a potent nephrotoxic and carcinogenic compound produced by plants of the Aristolochiaceae family and thoroughly investigated as... 相似文献
102.
As the demand for water in cities increases, the quantity of wastewater being produced is growing at a phenomenal rate. If resources are to be managed effectively, a new paradigm is required for urban wastewater management. This paper reviews the initial findings of a participatory action planning process for managing wastewater for agricultural use. It finds that such processes need considerable facilitation, capacity building and knowledge sharing, but that if a plan can be devised that meets the needs of the stakeholders, even if some compromise is required, then certain stakeholders are likely to take responsibility for specific aspects. This may not meet the entire integrated water resources management (IWRM) vision of the plan but provided the plan is developed in such a way that incremental implementation will be beneficial then this will produce some success and may stimulate further cooperation. 相似文献
103.
Toan Nguyen Solveig Heide Lucie Guilbaud Stéphanie Valence Saskia Vande Perre Eléonore Blondiaux Boris Keren Geneviève Quenum-Miraillet Jean-Marie Jouannic Laurent Mandelbrot Olivier Picone Agnès Guet Vassilis Tsatsaris Mathieu Milh Nadine Girard Marie Vincent Mathilde Nizon Céline Poirsier Alexandre Vivanti Alexandra Benachi Vincent des Portes Laurent Guibaud Olivier Patat Myrtille Spentchian Lisa Frugère Delphine Héron Catherine Garel 《黑龙江环境通报》2023,43(6):746-755
104.
An important component of ongoing water-resource investigations in the eastern Great Basin, USA, has been to ascertain the impact of future predicted climate change on groundwater availability. As a first step in that analysis, it was hypothesized that potentiometric fluctuations at certain wells would reflect annual-scale precipitation variation. Potentiometric behavior at a well depends on local hydrologic conditions, well construction, and human activities, in addition to natural recharge and regional water levels. Moreover, measurement data are limited for many wells. After preliminarily screening, a large body of well and climate station data, short-term potentiometric responses to annual-scale climate inputs, were identified at 18 wells using a simple visualization methodology developed during the study. For water levels displaying multi-annual trends, the signals were measured as deviations from a linear trendline. Groundwater responses lagged precipitation signals by less than 1 year to as much as 3 years, with most wells showing at most a 1- to 2-year delay. Response amplitude was variable and strongly depended on the hydrologic setting of each well. 相似文献
105.
A generalized approach for producing,quantifying, and validating citizen science data from wildlife images 总被引:1,自引:0,他引:1 下载免费PDF全文
Alexandra Swanson Margaret Kosmala Chris Lintott Craig Packer 《Conservation biology》2016,30(3):520-531
Citizen science has the potential to expand the scope and scale of research in ecology and conservation, but many professional researchers remain skeptical of data produced by nonexperts. We devised an approach for producing accurate, reliable data from untrained, nonexpert volunteers. On the citizen science website www.snapshotserengeti.org , more than 28,000 volunteers classified 1.51 million images taken in a large‐scale camera‐trap survey in Serengeti National Park, Tanzania. Each image was circulated to, on average, 27 volunteers, and their classifications were aggregated using a simple plurality algorithm. We validated the aggregated answers against a data set of 3829 images verified by experts and calculated 3 certainty metrics—level of agreement among classifications (evenness), fraction of classifications supporting the aggregated answer (fraction support), and fraction of classifiers who reported “nothing here” for an image that was ultimately classified as containing an animal (fraction blank)—to measure confidence that an aggregated answer was correct. Overall, aggregated volunteer answers agreed with the expert‐verified data on 98% of images, but accuracy differed by species commonness such that rare species had higher rates of false positives and false negatives. Easily calculated analysis of variance and post‐hoc Tukey tests indicated that the certainty metrics were significant indicators of whether each image was correctly classified or classifiable. Thus, the certainty metrics can be used to identify images for expert review. Bootstrapping analyses further indicated that 90% of images were correctly classified with just 5 volunteers per image. Species classifications based on the plurality vote of multiple citizen scientists can provide a reliable foundation for large‐scale monitoring of African wildlife. 相似文献
106.
Thorsten Zellmann Alexandra S. B?uerle und Dietmar Jahnke 《Umweltwissenschaften und Schadstoff-Forschung》2000,12(2):113-120
Zusammenfassung Im Rahmen praktischer Untersuchungen der Autoren zu Umweltmanagementsystemen in der Landwirtschaft, und hier insbesondere
der Umweltprüfung, zeigen sich die Besonderheiten der Agrarwirtschaft im Implementierungsproze?. Einige Bereiche k?nnen relativ
einfach umgesetzt werden, andere Aspekte bedürfen einer differenzierteren Methodik als bei anderen Wirtschaftsbereichen. W?hrend
sich das Managementaudit durch die übersichtliche Organisationsstruktur landwirtschaftlicher Betriebe meist als unkritisch
erweist, werden beim Wirkungsund Rechtsaudit einige bereichsspezifische Probleme erkannt. Das Wirkungsaudit zeigt dem Anwender
nach der Einführung einer neuen, speziell auf die Landwirtschaft angepa?ten Methodik der Stoffstrombilanzierung praxisorientierte
Handlungspotentiale. Die Ergebnisse k?nnen je nach Bedarf auf Betriebs-, Betriebszweigoder Kostentr?gerebene ausgewiesen relevant,
da sie einhohes ?kologischen Gef?hrdungspotential besitzen und bei den praktischen Erhebungen h?ufig Gegenstand von Beanstandungen
waren. Diese betreffen vor allem die Lagerung von umweltrelevanten Stoffen (Pflanzenschutzmittel, Diesel, Jauche, Gülle, Festmist
oder Sickers?fte) sowie die etwaigen Notwendigkeit und Beschaffenheit eines Waschplatzes. Die Konfliktbereiche werden beschrieben
und darauf aufbauend Optionen zur Verbesserung aufgezeigt.
Online-Publikationsdatum: 20.12.1999 相似文献
107.
Lischka Alexandra Pook Chris J. Bolstad Kathrin S. R. Pannell Jennifer L. Braid Heather E. 《Environmental science and pollution research international》2019,26(12):11975-11987
Environmental Science and Pollution Research - Cephalopods are important in the diets of humans and many other apex predators, and can play an important role in the bioaccumulation of metals. In... 相似文献
108.
Aline Andressa Rigo Alana Marie De Cezaro Daniela Kunkel Muenchen Janine Martinazzo Alexandra Manzoli Juliana Steffens 《Journal of environmental science and health. Part. B》2020,55(3):239-249
AbstractHeavy metals can be highly toxic depending on the dose and the chemical form. In this context, sensing devices such as nanobiosensors have been presented as a promising tool to monitor contaminants at micro and nanoscale. In this work, cantilever nanobiosensors with phosphatase alkaline were developed and applied to detect heavy metals (Pb, Ni, Cd, Zn, Co, and Al) in river water. The nanobiosensor surface was functionalized by the self-assembled monolayers (SAM) technique using 16-mercaptohexadecanoic acid, N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (EDC) and N- hydroxysuccinimide (NHS), and phosphatase alkaline enzyme. The sensing layer deposited on the cantilever surface presented a uniform morphology, at nanoscale, with 80?nm of thickness. The nanobiosensor showed a detection limit in the ppb range and high sensitivity, with a stability of fifteen days. The developed cantilever nanobiosensor is a simple tool, suitable for the direct detection of contaminants in river water. 相似文献
109.
Nazaré Couto Ana Rita Ferreira Paula Guedes Eduardo Mateus Alexandra B. Ribeiro 《Environmental science and pollution research international》2018,25(36):35928-35935
Pharmaceuticals and personal care products (PPCPs) have attracted increasing concern during the last decade because of their widespread uses and continuous release to the aquatic environment. This work aimed to study the distribution of caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS) when they arrive in salt marsh areas and to assess their remediation potential by two different species of salt marsh plants: Spartina maritima and Halimione portulacoides. Experiments were carried out in the laboratory either in hydroponics (sediment elutriate) or in sediment soaked in elutriate, for 10 days. Controls without plants were also carried out. CAF, MBPh, and TCS were added to the media. In unvegetated sediment soaked in elutriate, CAF was mainly in the liquid phase (83%), whereas MBPh and TCS were in the solid phase (90% and 56%, respectively); the highest remediation was achieved for TCS (40%) and mainly attributed to bioremediation. The presence of plants in sediment soaked in elutriate-enhanced PPCPs remediation, decreasing CAF and TCS levels between approximately 20-30% and MBPh by 40%.. Plant uptake, adsorption to plant roots/sediments, and bio/rhizoremediation are strong hypothesis to explain the decrease of contaminants either in water or sediment fractions, according to PPCPs characteristics. 相似文献
110.
Christoph Kämpfer Thomas-Benjamin Seiler Anna-Lena Beger Georg Jacobs Manuel Löwer Franziska Moser Julia Reimer Martin Trautz Björn Usadel Alexandra Wormit Henner Hollert 《Environmental Sciences Europe》2017,29(1):27
Technical product harvesting (TEPHA) is a newly developing interdisciplinary approach in which bio-based production is investigated from a technical and ecological perspective. Society‘s demand for ecologically produced and sustainably operable goods is a key driver for the substitution of conventional materials like metals or plastics through bio-based alternatives. Technical product harvesting of near net shape grown components describes the use of suitable biomass for the production of technical products through influencing the natural shape of plants during their growth period. The use of natural materials may show positive effects on the amount of non-renewable resource consumption. This also increases the product recyclability at the end of its life cycle. Furthermore, through the near net shape growth of biomass, production steps can be reduced. As a consequence such approaches may save energy and the needed resources like crude oil, coal or gas. The derived near net shape grown components are not only considered beneficial from an environmental point of view. They can also have mechanical advantages through an intrinsic topology optimization in contrast to common natural materials, which are influenced in their shape after harvesting. In order to prove these benefits a comprehensive, interdisciplinary scientific strategy is needed. Here, both mechanical investigations and life cycle assessment as a method of environmental evaluation are used. 相似文献