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Politique generale de protection de l' environnement en France en matiere de pollution atmospherique [actions du Ministere de l' Environnement, de l' Agence pour la Qualite de l' Air et du Ministere de la Sante].
1987
Legrand H. | Biren J.M. | Jouan M.
[General policy of environmental protection in France concerning atmospheric pollution [actions by the Ministry of the Environment, the Air Quality Agency and the Ministry of Health]]
1987
Legrand, H. | Biren, J.M. | Jouan, M.
Farmed shrimp aquaculture in coastal wetlands of Latin America — A review of environmental issues
2022
Monsalve, Eduardo Rebolledo | Quiroga, Eduardo
The world production of farmed Whiteleg shrimp was 5,812,180 t in 2020. Ecuador, Mexico, and Brazil produced 1,012,830 in that year according to data FishStatJ. Environmental impact studies were scarce given the rapid growth of this activity, mainly on cummulative impacts, loss of ecosystems services or resilience of wetlands and mangroves. Aspects of the management of environmental impacts published on American studies during 1986–2020 are analyzed. The main impacts included the loss of mangroves and their transformation of these ecosystems and their water bodies by receiving enriched effluents from shrimp farms. Different management measures are discussed between Ecuador, which contributes 63.76 % of American production of white leg shrimp; Brazil which published 46.2 % of the environmental studies of the analyzed period, and Mexico, in an intermediate situation. Finally, alternatives are discussed to improve the management of shrimp aquaculture with emphasis on the Ecuadorian context.
Mostrar más [+] Menos [-]Have U.S. environmental policies been effective in the reduction of U.S. emissions? A new approach using fractional integration
2017
Gil-Alana, Luis A. | Solarin, Sakiru Adebola
This paper deals with the analysis of the global and per capita NOx and VOC emissions in the U.S. and the evaluation of the effectiveness of a number of environmental policies conducted by the government during the last 50 years. For this purpose we have employed fractional integration techniques, which are more flexible than other standard approaches based on the dichotomy between stationary I(0) and nonstationary I(1) behavior. Using the I(d) class of models, our results indicate first that the two NOx series display orders of integration substantially higher than 1, and though the VOC series display smaller orders, the unit root hypothesis cannot be rejected, indicating lack of mean reversion in the four series examined. Including dummy variables for each of the breaks referring to the environmental policies, the results show that the five policies investigated (at 1965, 1967, 1970, 1977 and 1990) were effective in reducing the number of emissions, being particularly important the one that was adopted in 1970.
Mostrar más [+] Menos [-]Emission reduction scenarios for nitrogen compounds and their impact on acidification, eutrophication and ozone formation in Flanders
1998
Mensink, C. | Beirens, F. (VITO, Boeretang 200, B-2400 Mol (Belgium))
Policies and instruments for reducing nitrogen oxide emissions from stationary sources in the Netherlands
1998
Jonge, L. de (Ministry of Housing, Spatial Planning and the Environment, The Hague (Netherlands))
Analysis of environmental policy measures aimed at reducing nitrogen leaching at the farm level
1998
Hasler, B. (National Environmental Research Institute, Department for Policy Analysis, P.O. Box 358, 4000 Roskilde (Denmark))
[Financial consequences in connection with cleaning of dumping sites]
1996
Olsson, I.W. | Gruenbaum, M.
[Strategy for definition of groundwater protection zones]
1995
Christensen, H.H.
[Behaviour of chemicals in soil and groundwater and the importance to groundwater protection]
1995
Kjeldsen, P. (Danmarks Tekniske Univ., Lyngby (Denmark). Inst. for Miljoeteknologi)