Search results for "diversity"
showing 10 items of 3950 documents
Modeling of 137Cs migration in soils using an 80-year soil archive: role of fertilizers and agricultural amendments
2008
An 80-year soil archive, the 42-plot experimental design at the INRA in Versailles (France), is used here to study long-term contamination by 137Cs atmospheric deposition and the fate of this radioisotope when associated with various agricultural practices: fallow land, KCl, NH4(NO3), superphosphate fertilizers, horse manure and lime amendments. The pertinence of a simple box model, where radiocaesium is supposed to move downward by convectional mechanisms, is checked using samples from control plots which had been neither amended, nor cultivated since 1928. This simple model presents the advantage of depending on only two parameters: α, a proportional factor allowing the historical atmosph…
Tillage effects on yield and nitrogen fixation of legumes in Mediterranean conditions
2012
Published in Agron. J. 104:1459–1466 (2012) Posted online [DATE] doi:10.2134/agronj2012.0070 Copyright © 2012 by the American Society of Agronomy, 5585 Guilford Road, Madison, WI 53711. All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. I agricultural practices that involve the use of agrochemicals such as fertilizers, pesticides, and herbicides have greatly increased the global food supply but often with detrimental effects on the environment, such as contamination of ground…
Research on macrolepidoptera species (Insecta: Lepidoptera) collected in Dumbrava Sibului Forest (Romania) in conditions of the year 2011 and their s…
2012
Macrolepidoptera fauna of Sibiu and its surroundings is studied for over 124 years by the naturalists Saxons. The collected material is preserved in the form of individual collections at the Natural History Museum in Sibiu. In addition to our material collected by us since 2001, data from these collections were a valuable documentary material for the present work. Our considerations on Macrolepidoptera flight periods are based on research conducted during the year 2011 from March to November in the protected area Dumbrava Sibiului. The natural conditions and the characteristics of the investigated area were revealed in several previous articles that could be found in the reference list. Thi…
Lepidoptera (Insecta: Lepidoptera) in the collection of Daniel Czekelius from Natural History Museum of Sibiu, collected from "Dumbrava Sibiului" for…
2011
Currently, fauna and ecological analysis of the landscape in which the reserves and Forest "Dumbrava Sibiu" shows a great scientific interest and practical for biological research in Sibiu. The results can contribute substantially to assessing the state of the world of insects and their evolution in the ecosystem studied, but also to establish their quantitative and qualitative changes over time. In the present work was studied the Lepidoptera collection of Transylvania Dr. Daniel Czekelius, and the paper presents a systematic list of species collected Macrolepidoptere since 1888-1929 in Forest "Dumbrava Sibiu".This paper can be considered a tribute and memory of Dr.Daniel Czekelius entomol…
Jyväskylän yliopiston ylioppilaskunnan hiili- ja luontojalanjälki
2023
Tässä hankkeessa laskettiin Jyväskylän yliopiston ylioppilaskunnan (JYY) merkittävimpien toimintojen vuoden 2021 hiili- ja luontojalanjälki eli ilmasto- ja luontohaitat. Menetelmä perustuu pääosin muun muassa EXIOBASE ja LC-IMPACT-tietokantoihin, joiden avulla pystytään talouskirjanpitoon perustuen selvittämään eri tuotteiden ja palveluiden aiheuttamat ilmasto- ja luontohaitat sekä niiden maantieteelliset sijainnit. JYY:n vuoden 2021 hiilijalanjälki oli 2017 t CO2e, maaekosysteemeihin kohdistuva luontojalanjälki oli 8,30E-09 PDF (globaali osuus lajeista, jotka ovat riskissä kuolla sukupuuttoon), makean veden ekosysteemeihin kohdistuva luontojalanjälki oli 1,42E-09 PDF ja meriekosysteemeihin…
Cardiovascular Health in Migrants. Current status and issues for prevention. A Collaborative Multidisciplinary Task Force Report
2014
OBJECTIVES: To review information on cardiovascular health and migration, to stress the attention of researchers that much needs to be done in the collection of sound data in Italy and to allow policy makers identifying this issue as an important public health concern. BACKGROUND: In Italy, the rate of immigrants in the total number of residents increased from 2.5% in 1990 to 7.4% in 2010, and currently exceeds 10% in regions such as Lombardia, Emilia Romagna and Toscana. METHODS: A consensus statement was developed by approaching relevant Italian national scientific societies involved in cardiovascular prevention. Task force members were identified by the president and/or the boards of eac…
Le droit de propriété à l’ère du changement climatique
2019
International audience; La vérité maintenant indiscutable du changement climatique dérange l'espèce humaine, contrainte de modifier le sens de son développement. L'ampleur du bouleversement paraît telle qu'il faille, de toute urgence, penser la transition vers une économie fondée sur d'autres paradigmes que les énergies fossiles et la consommation illimitée des ressources naturelles. Le rôle du droit de propriété dans ce nouveau scénario est une interrogation majeure. Prérogative fondamentale des démocraties occidentales, la propriété traverse partout une crise existentielle tenant au fait qu'elle est au coeur du système, politique, juridique et économique, dont le procès est aujourd'hui ou…
The check-list of fungi in Sicily (southern Italy): current survey status
2011
A number of checklists are currently available in several continents, European and extra European countries (Holland, Switzerland, France, United Kingdom, North America, Argentina, Brazil, Uruguay, Venezuela, Bulgaria, Greece, Italy, Norway, Poland, Portugal, Spain, Romania, Russia, Africa, Iran, Oman, Turkey, Asia). The checklists are modern tools for evaluation of fungal biodiversity and precious documents to obtain ecological data and information for management and exploitation of protected areas, agro- and forest ecosystems. A checklist of Sicilian fungi was edited by Venturella (1991), followed, in 2009, by a new report (Gargano et al., 2009). At that time the number of macrofungi from…
Recent Developments in the Chiral Brønsted Acid-catalyzed Allylboration Reaction with Polyfunctionalized Substrates
2016
Asymmetric allylboration has played a central role in organic synthesis ever since the pioneering work by Hoffman and Brown, having found applications in the total synthesis of many natural products. A new dawn for this 40 year-old reaction occurred with the beginning of the new century when the first catalytic asymmetric methods came into play. In less than one decade, several methodologies, able to achieve the desired homoallylic alcohols with ee ranges in the high 90s, were developed. Among them, in the present account, we will disclose our contribution to the development of the chiral binolphosphoric-derived BrOnsted acid-catalyzed allylboration of aldehydes originally reported by Antil…
The diversity of coordination chemistry – A special issue in honor of Prof. Pierre Braunstein
2017
International audience