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| Registros recuperados: 10.260 | |
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| Steinman, Alan; Annis Water Resources Institute, Grand Valley State University; steinmaa@gvsu.edu; Havens, Karl; South Florida Water Management District; khavens@sfwmd.gov; Hornung, Lewis; South Florida Water Management District; lhornun@sfwmd.gov. |
| Resource management decisions often are based on a combination of scientific and political factors. The interaction of science and politics is not always apparent, which makes the decision-making process appear arbitrary at times. In this paper, we present a case study involving Lake Okeechobee, a key environmental resource in South Florida, USA, to illustrate the role that science played in a high-profile, highly contentious natural resource management decision. At issue was whether or not to lower the water level of Lake Okeechobee. Although scientists believed that a managed recession (drawdown) of water level would benefit the lake ecosystem, risks were present because of possible future water shortages and potential environmental impacts to downstream... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Aquatic resource management; Environmental management; Lake Okeechobee; Lake restoration; Light and aquatic plants; Restoration ecology; Role of science in management; Submerged aquatic vegetation; Water supply vs. ecological health. |
| Ano: 2002 |
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| Gatto, Marino; Politecnico di Milano; gatto@elet.polimi.it; Caizzi, Andrea; CESI, Business Unit Ambiente; caizzi@cesi.it; Rizzi, Luca; CESI, Business Unit Ambiente; rizziluca@virgilio.it; De Leo, Giulio A; Agenzia Regionale per la Protezione dell' Ambiente; deleo@dsa.unipr.it. |
| Despite recent advances, there is a high degree of uncertainty concerning the climate change that would result from increasing atmospheric greenhouse gas concentrations. Also, opponents of the Kyoto Protocol raised the key objection that reducing emissions would impose an unacceptable economic burden on businesses and consumers. Based on an analysis of alternative scenarios for electricity generation in Italy, we show that if the costs in terms of damage to human health, material goods, agriculture, and the environment caused by greenhouse gas emissions are included in the balance, the economic argument against Kyoto is untenable. Most importantly, the argument holds true even if we exclude global external costs (those due to global warming), and account... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Cost-benefit analysis; Electric power generation; Environmental costs; Externalities; Greenhouse gasses; Italian economic impacts; Kyoto Protocol. |
| Ano: 2002 |
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| Bawa, Kamaljit; University of Massachusetts; kamal.bawa@umb.edu; Rose, Joseph; ; joesph.rose@umb.edu; Ganeshaiah, K.N.; ; kng@vsnl.com; Barve, Narayani; ; narayani@atree.org; Kiran, M.C.; ; kiran@atree.org; Umashaanker, R.; ; rus@vsnl.com. |
| We demonstrate for the first time the potential use of satellite imagery to characterize areas of high and low species richness of trees in tropical forests. Our studies, conducted in the Biligiri Rangaswamy hills in the Western Ghats, India, show a high positive correlation between species richness and the Normalized Difference Vegetation Index (NDVI), which is an index of green biomass. We discuss the application of NDVI values for biodiversity assessment and monitoring, as well as for conservation planning. The NDVI is a rough measure of green biomass. |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Western Ghats; Species diversity; Tropical deforestation. |
| Ano: 2002 |
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| Registros recuperados: 10.260 | |
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