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排序方式: 共有328条查询结果,搜索用时 31 毫秒
291.
Kristin M. Kleisner Catherine Longo Marta Coll Ben S. Halpern Darren Hardy Steven K. Katona Frédéric Le Manach Daniel Pauly Andrew A. Rosenberg Jameal F. Samhouri Courtney Scarborough U. Rashid Sumaila Reg Watson Dirk Zeller 《Ambio》2013,42(8):910-922
Sustainable provision of seafood from wild-capture fisheries and mariculture is a fundamental component of healthy marine ecosystems and a major component of the Ocean Health Index. Here we critically review the food provision model of the Ocean Health Index, and explore the implications of knowledge gaps, scale of analysis, choice of reference points, measures of sustainability, and quality of input data. Global patterns for fisheries are positively related to human development and latitude, whereas patterns for mariculture are most closely associated with economic importance of seafood. Sensitivity analyses show that scores are robust to several model assumptions, but highly sensitive to choice of reference points and, for fisheries, extent of time series available to estimate landings. We show how results for sustainable seafood may be interpreted and used, and we evaluate which modifications show the greatest potential for improvements. 相似文献
292.
Rodrigo Kerr Letícia C. da Cunha Ruy K. P. Kikuchi Paulo A. Horta Rosane G. Ito Marius N. Müller Iole B. M. Orselli Jannine M. Lencina-Avila Manoela R. de Orte Laura Sordo Bárbara R. Pinheiro Frédéric K. Bonou Nadine Schubert Ellie Bergstrom Margareth S. Copertino 《Environmental management》2016,57(3):740-752
293.
The degradation of bitertanol by ozone treatment is investigated. Solutions of bitertanol (8.4 μg mL?1) were prepared either by dissolution of the standard or by dilution of Gaucho Blé seed loading solution and then ozonated under different conditions. Evolution of the concentrations of bitertanol and its ozonation by-products in both solutions was monitored by HPLC–UV as a function of the treatment time for a concentration of 100 g m?3 of ozone in the inlet gas. Bitertanol degradation was found to follow a pseudo-first order reaction in both cases. However, the rate of the reaction in diluted seed loading solution was much lower (0.19 vs. 0.27 min?1 in standard solution) and was close to the reaction rate observed in the presence of a radical scavenger, tert-butanol (0.11 min?1). Thus, it may be suggested that additives present in the seed loading solution may play the role of radical scavengers. Study of ozone concentration in the inlet gas (from 25 to 100 g m?3) showed that ozone degradation is also a first-order reaction with respect to ozone. Four ozonation by-products were highlighted, collected and identified by HPLC coupled with an ion trap mass spectrometer using positive electrospray ionization mode. A degradation pathway of bitertanol was finally proposed. 相似文献
294.
William Dab Claire Ségala Frédéric Dor Bernard Festy Philippe Lameloise Yvon Le Moullec 《Journal of the Air & Waste Management Association (1995)》2013,63(2):203-219
De nombreuses études épidémiologiques ont observé dans des contextes différents une faible relation à court terme entre les particules et la mortalité cardio-pulmonaire, même quand les normes de qualité de l'air n'étaient pas dépassées. La causalité de cette relation est un enjeu de santé publique en raison de l'importance de la population exposée. Notre objectif est de faire l'inventaire critique des arguments utilisés dans 15 revues de la littérature publiées. Nous expliquons l'importance de distinguer la validité de la causalité et analysons de façon systématique les différents critères de jugement dans le contexte des études écologiques temporelles. Notre conclusion est que la relation observée est valide et que la plupart des critères de causalité sont respectés. Diminuer le niveau d'exposition des populations aux particules est souhaitable. En Europe, en agissant à la source, notamment sur les émissions Diesel, on diminuera aussi d'autres polluants qui peuvent jouer un rôle sanitaire. Aux États-Unis, la situation est plus complexe car les particules sont surtout secondaires. Il est également indispensable de poursuivre les recherches pour mieux connaître les déterminants des expositions globales des individus et mieux comprendre le rôle toxique des différents facteurs physico-chimiques des particules. 相似文献
295.
Gu Zhaolin Han Jie Zhang Liyuan Wang Hongliang Luo Xilian Meng Xiangzhao Zhang Yue Niu Xinyi Lan Yang Wu Shaowei Cao Junji Lichtfouse Eric 《Environmental Chemistry Letters》2023,21(2):725-739
Environmental Chemistry Letters - Policies and measures to control pandemics are often failing. While biological factors controlling transmission are usually well explored, little is known about... 相似文献
296.
Environmental Chemistry Letters - 相似文献
297.
Osman Ahmed I. Fawzy Samer Lichtfouse Eric Rooney David W. 《Environmental Chemistry Letters》2023,21(6):3041-3044
Environmental Chemistry Letters - 相似文献
298.
Frédéric Babonneau Alain Bernard Alain Haurie Marc Vielle 《Environmental Modeling and Assessment》2018,23(6):611-626
In the meta-modeling approach, one builds a numerically tractable dynamic optimization or game model in which the parameters are identified through statistical emulation of a detailed large scale numerical simulation model. In this paper, we show how this approach can be used to assess the economic impacts of possible climate policies compatible with the Paris Agreement. One indicates why it is appropriate to assume that an international carbon market, with emission rights given to different groups of countries will exist. One discusses the approach to evaluate correctly abatement costs and welfare losses incurred by different groups of countries when implementing climate policies. Finally, using a recently proposed meta-model of game with a coupled constraint on a cumulative CO2 emissions budget, we assess several new scenarios for possible fair burden sharing in climate policies compatible with the Paris Agreement. 相似文献
299.
Anne-Lise Mariet Anne-Véronique Walter-Simonnet Frédéric Gimbert Christophe Cloquet Carole Bégeot 《Ambio》2018,47(8):893-907
Iron mining activities in the Bruche valley (Vosges Mountains, France) date historically from the Roman period to the mid-nineteenth century. The geochemical and palynological study of a core from the peat bog of Le Champ du Feu allows highlighting impacts of these activities over the past millennium. Trace metal contamination is recorded for lead (Pb), arsenic, zinc, and antimony during the Middle Ages, the sixteenth century, and from cal. ad 1750–1900, with several sources distinguished by Pb isotope analyses. Forest exploitation is attested by the palynological analysis of the core, with exploitation of Fagus for smelting processes and cutting of Abies for agro-pastoralism. This approach highlights several patterns of contamination, corresponding to the mixing sources and the contamination intensity, which can be linked to the pollen assemblage zones. Hence, anthropogenic activities such as mining and farming led to long-term modification of the landscape composition in this mountainous area. 相似文献
300.
Christian Mougin Emmanuelle Artige Frédéric Marchand Samuel Mondy Céline Ratié Nadine Sellier Philippe Castagnone-Sereno Armelle Cœur D’Acier Daniel Esmenjaud Céline Faivre-Primot Laurent Granjon Valérie Hamelet Frederic Lange Sylvie Pagès Frédéric Rimet Nicolas Ris Guillaume Sallé 《Environmental science and pollution research international》2018,25(34):33849-33857
The Biological Resource Centre for the Environment BRC4Env is a network of Biological Resource Centres (BRCs) and collections whose leading objectives are to improve the visibility of genetic and biological resources maintained by its BRCs and collections and to facilitate their use by a large research community, from agriculture research to life sciences and environmental sciences. Its added value relies on sharing skills, harmonizing practices, triggering projects in comparative biology, and ultimately proposing a single-entry portal to facilitate access to documented samples, taking into account the partnership policies of research institutions as well as the legal frame which varies with the biological nature of resources. BRC4Env currently includes three BRCs: the Centre for Soil Genetic Resources of the platform GenoSol, in partnership with the European Conservatory of Soil Samples; the Egg Parasitoids Collection (EP-Coll); and the collection of ichthyological samples, Colisa. BRC4Env is also associated to several biological collections: microbial consortia (entomopathogenic bacteria, freshwater microalgae…), terrestrial arthropods, nematodes (plant parasitic, entomopathogenic, animal parasitic...), and small mammals. The BRCs and collections of BRC4Env are involved in partnership with academic scientists, as well as private companies, in the fields of medicinal mining, biocontrol, sustainable agriculture, and additional sectors. Moreover, the staff of the BRCs is involved in many training courses for students from French licence degree to Ph.D, engineers, as well as ongoing training. 相似文献