Estimating greenhouse gas emissions from cattle raising in Brazil     

Mercedes M. C. Bustamante  Carlos A. Nobre  Roberto Smeraldi  Ana P. D. Aguiar  Luis G. Barioni  Laerte G. Ferreira  Karla Longo  Peter May  Alexandre S. Pinto  Jean P. H. B. Ometto 《Climatic change》2012,115(3-4):559-577

The study estimated, for the first time, the greenhouse gas emissions associated with cattle raising in Brazil, focusing on the period from 2003 to 2008 and the three principal sources: 1) portion of deforestation resulting in pasture establishment and subsequent burning of felled vegetation; 2) pasture burning; and 3) bovine enteric fermentation. Deforestation for pasture establishment was only considered for the Amazon and Cerrado. Emissions from pasture burning and enteric fermentation were accounted for the entire country. The consolidated emissions estimate lies between approximately 813 Mt CO₂eq in 2008 (smallest value) and approximately 1,090 Mt CO₂eq in 2003 (greatest value). The total emissions associated with Amazon cattle ranching ranged from 499 to 775 Mt CO₂eq, that of the Cerrado from 229 to 231 Mt CO₂eq, and that of the rest of the country between 84 and 87 Mt CO₂eq. The full set of emissions originating from cattle raising is responsible for approximately half of all Brazilian emissions (estimated to be approximately 1,055 Mt CO₂eq in 2005), even without considering cattle related sources not explicitly estimated in this study, such as energy use for transport and refrigeration along the beef and derivatives supply chain. The potential for reduction of greenhouse gas emissions offered by the Brazilian cattle industry is very high and might constitute Brazil’s most important opportunity for emissions mitigation. The study offers a series of policy recommendations for mitigation that can be implemented by public and private administrators at a low cost relative to other greenhouse gas reduction options.  相似文献   

Coupled seismic faults and the predictability of earthquakes by means of deterministic models     

J. Lomnitz-Adler  R. Pérez Pascual 《Geophysical Journal International》1989,98(1):143-148

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Hydrothermalisme anté-Hercynien en Sud-Ibérie : apport de la géochimie isotopique du plombPre-Hercynian hydrothermalism in South Iberia: lead isotope geochemistry constraints     

Éric Marcoux  Emilio Pascual  Jérôme Onézime 《Comptes Rendus Geoscience》2002,334(4):259-265

Lead isotope study has been performed on massive sulphide deposits of Ossa-Morena and Aracena Belt (South Iberia). Results suggest the existence of at least two ancient hydrothermal events. The first one, Upper Brioverian in age (～600–570 Ma), gave birth to Maria-Luisa and Puebla de la Reina massive sulphide deposits; it thus confirms the existence of a Cadomian orogen in South Iberia. Isotopic compositions indicate a local contribution of mantle-derived material (Maria Luisa mine), confirming the presence of ancient oceanic crust in Aracena Belt. This mineralising event seems to extend till the Armorican Massif. The second episode, Eo-Hercynian in age (～400–350 Ma) has allowed genesis of massive sulphide deposits of la Nava Paredon and Aguas Blancas, and could be coeval with the emplacement of South-Iberian massive sulphide ore deposits in the neighbouring South-Portuguese Zone. A more continental crustal source for later ore deposits could explain the much more important metal accumulation in this zone. To cite this article: É. Marcoux et al., C. R. Geoscience 334 (2002) 259–265.  相似文献   

The response of mercury (Hg) transformation in soil to sulfur compounds and sulfur-rich biowaste application     

Jiřina Száková  Andrea Burešová  Lukáš Praus  Mercedes García-Sánchez  Zlata Holečková  Jiří Gabriel  Jiřina Sysalová  Rostislav Červenka  Josef Komárek  Slávka Grohová  Pavel Tlustoš 《Environmental Earth Sciences》2016,75(7):584

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The recruitment of gill-infesting copepods as a categorical predictor of size-at-age data in squid populations     

Pascual  S.; Gonzalez  A.F.; Guerra  A. 《ICES Journal of Marine Science》2005,62(4):629-633

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Étude de sédiments côtiers de la Guinée Continentale     

J. Pérez Mateos  J. Alonso Pascual 《Contributions to Mineralogy and Petrology》1964,10(2):225-229

Ohne Zusammenfassung En hommage pour le 70 anniversaire du Professeur Dr.C. W. Correns, les auteurs dedient ce travail, en remerciant l’enseignement qu’ils ont re?u pendant leur séjour au Sedimentpetrographisches Institut de G?ttingen (1952 et 1955).  相似文献   

Detection, modelling and estimation of non-linear trends by using a non-homogeneous Vasicek stochastic diffusion. Application to CO2 emissions in Morocco     

R. Gutiérrez  R. Gutiérrez-Sánchez  A. Nafidi  A. Pascual 《Stochastic Environmental Research and Risk Assessment (SERRA)》2012,26(4):533-543

This paper proposes a new stochastic model, based on a Vasicek non-homogeneous diffusion process, in which the non-linear trend coefficient (drift) depends on deterministic functions that describe the dynamic evolution of certain exogenous variables. After studying its probabilistic characteristics, and in particular the transition probability density and trend function, the associated stochastic inference based on discrete sampling in time is established using maximum likelihood methodology. This model is applied to detect, estimate and model the non-linear trend present in data corresponding to CO₂ emissions in Morocco. Energy and financial variables that affect the behaviour of this trend are also detected, and substantial improvement provided by this non-homogeneous model with respect to its corresponding homogeneous version, is confirmed.  相似文献   

An empirical model of water quality for use in rapid management strategy evaluation in Southeast Queensland, Australia     

de la Mare W  Ellis N  Pascual R  Tickell S 《Marine pollution bulletin》2012,64(4):704-711

Simulation models have been widely adopted in fisheries for management strategy evaluation (MSE). However, in catchment management of water quality, MSE is hampered by the complexity of both decision space and the hydrological process models. Empirical models based on monitoring data provide a feasible alternative to process models; they run much faster and, by conditioning on data, they can simulate realistic responses to management actions. Using 10 years of water quality indicators from Queensland, Australia, we built an empirical model suitable for rapid MSE that reproduces the water quality variables' mean and covariance structure, adjusts the expected indicators through local management effects, and propagates effects downstream by capturing inter-site regression relationships. Empirical models enable managers to search the space of possible strategies using rapid assessment. They provide not only realistic responses in water quality indicators but also variability in those indicators, allowing managers to assess strategies in an uncertain world.  相似文献   

Forty-five years of oceanographic and meteorological observations at a coastal station in the NW Mediterranean: a ground truth for satellite observations     

Salat  Jordi  Pascual  Josep  Flexas  Mar  Chin  Toshio Michael  Vazquez-Cuervo  Jorge 《Ocean Dynamics》2019,69(9):1067-1084

Ocean Dynamics - Marine and atmospheric parameters, including temperature observations from surface to 80 m (at 6 depths) are measured since September 1973 on a higher-than-weekly...  相似文献   

The 48th Liege colloquium: submesoscale processes: mechanisms,implications, and new frontiers     

Alexander Barth  Amala Mahadevan  Ananda Pascual  Simon Ruiz  Charles Troupin 《Ocean Dynamics》2018,68(8):1067-1069

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