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| Registros recuperados: 62 | |
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| Bertolino, Maria Lúcia. |
| This work has as objective to argue the environmental question concerning the conservation of the forests and biodiversity. One major issue in this question is that the Brazilian forest sector contributes with an important parcel for the Brazilian economy, generates products for direct consumption or for exportation, generates taxes and jobs for the population and, still, bring positive and negative consequences in the conservation and preservation of both renewable and not renewable natural resources. The forest economy has been, historically, responsible for one of the five largest positive commercial balances of the country and still it supplies 85% of all the products of forest origin found in the national market, therefore, alleviating the pressure on... |
| Tipo: Article |
Palavras-chave: Preservation; Biodiversity; Forests. |
| Ano: 2007 |
URL: http://hdl.handle.net/2315/106 |
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| Sedjo, Roger A.; Toman, Michael. |
| An RFF Workshop brought together experts from around the world to assess the feasibility of using biological sinks to sequester carbon as part of a global atmospheric mitigation effort. The chapters of this proceeding are a result of that effort. Although the intent of the workshop was not to generate a consensus, a number of studies suggest that sinks could be a relatively inexpensive and effective carbon management tool. The chapters cover a variety of aspects and topics related to the monitoring and measurement of carbon in biological systems. They tend to support the view the carbon sequestration using biological systems is technically feasible with relatively good precision and at relatively low cost. Thus carbon sinks can be operational. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Carbon; Sinks; Global warming; Sequestration; Forests; Environmental Economics and Policy; Q10; Q15; Q21; Q23; Q24. |
| Ano: 2001 |
URL: http://purl.umn.edu/10480 |
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| Schwenk, Lunalva Moura; UFRJ; Cruz, Carla Bernadete Madureira; UFRJ. |
| A pesquisa trata da espacialização da ocupação da soja, levantada por imagens de satélite, em duas áreas no Planalto e Chapada dos Parecis, estando a Área I sob influência do eixo da BR-364 e a área II da BR-163. Estudaram-se os municípios consolidados, expandindo-se ou projetando-se no cultivo da soja, motivados pela implantação de rodovias. Na Área I, estão: Brasnorte, Campos de Júlio, Sapezal e Campo Novo dos Parecis e, na Área II: Sorriso, Lucas do Rio Verde, Nova Mutum, Vera, Nova Ubiratã, Santa Carmem e Claudia. Embora a soja possibilite o crescimento econômico, contribuindo para melhorar o padrão e qualidade de vida, concomitantemente, desencadeia inúmeros conflitos ambientais, ecológicos e sociais, pois, à medida que a fronteira agrícola avança e... |
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Palavras-chave: 5.01.00.00-9 Agronomia conflitos socioeconômicos-ambientais; Soja; Cerrado; Floresta; Eixos da BR-163 e BR-364. Socio-economical-environmental conflicts; Soybean; Savanna; Forests; BR-163 and BR-364. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5305 |
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| LIMA, J. A. de S.; LOPES FILHO, R. P.; ALMEIDA, W. da C.; GUIMARÃES, E. G. T.. |
| As florestas tropicais estão entre os ecossistemas mais complexos conhecidos. Apesar da aparente desordem de seus componentes, encontram-se padrões mensuraveis de dinamica, composicao e estruturas. enquanto estes, entre outros aspectos, detalham riqueza e diversidade floristica, indicadores físicos da massa arborea e ocupação horizontal e vertical do espaço, em termos de dinamica, destacam-se, mortalidade e o crescimento da massa arborea. |
| Tipo: Folhetos |
Palavras-chave: Árvore; Floresta; Forests; Trees. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/344141 |
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| Allegrucci,Natalia; Cabello,Marta N; Arambarri,Angélica M. |
| Eight regions of native forests have been recognized in Argentina: Chaco forest, Misiones rain forest, Tucumán-Bolivia forest (Yunga), Andean-Patagonian forest, "Monte", "Espinal", fluvial forests of the Paraguay, Paraná and Uruguay rivers, and "Talares" in the Pampean region. We reviewed the available data concerning biodiversity of saprotrophic microfungi (anamorphic Ascomycota) in those native forests from Argentina, from the earliest collections, done by Spegazzini, to present. Among the above mentioned regions most studies on saprotrophic microfungi concentrates on the Andean-Patagonian forest, the fluvial forests of the Paraguay, Paraná and Uruguay rivers and the "Talares", in the Pampean region. There are only a few records of fungal species in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anamorphic Ascomycota; Argentina; Biodiversity; Forests. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932009000100007 |
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| Younge, A.. |
| The eastern African coastal forest ecoregion is recognised as one of Africa’s centres of species endemism, and is distributed over six countries (Somalia, Kenya, Tanzania, Mozambique, Zimbabwe and Malawi). Most is found in Kenya, Tanzania and Mozambique, which form our focal region. The coastal forests are fragmented, small and surrounded by poor communities that have a high demand for land and forest resources. Although coastal forests have significant cultural and traditional values for local communities, they do not receive adequate support from the relevant government authorities and international conservation institutions. WWF has over 10 years research and conservation experience on the eastern Africa coastal forests in Kenya, Tanzania and Mozambique... |
| Tipo: Report |
Palavras-chave: Coastal zone; Forests; Endemic species; Coastal area; Ecological zones; Http://aims.fao.org/aos/agrovoc/c_9000021; Http://aims.fao.org/aos/agrovoc/c_15704. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/307 |
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| Niemi, Gerald; University of Minnesota; gniemi@d.umn.edu; Hanowski, JoAnn; University of Minnesota; jhanowsk@sage.nrri.umn.edu; Helle, Pekka; Finnish Game and Fisheries Research Institute; meltausrta@HELSINKI.RKTL.fi; Howe, Robert; University of Wisconsin; hower@uwgb.wi.edu; Venier, Lisa; Canadian Forest Service; lvenier@nrcan.gc.ca; Welsh, Daniel; Canadian Forest Service; dwelsh@AM.NCR.FORESTRY.CA. |
| We review characteristics of birds in boreal forests in the context of their ecological sustainability under both natural and anthropogenic disturbances. We identify the underlying ecological factors associated with boreal bird populations and their variability, review the interactions between boreal bird populations and disturbance, and describe some tools on how boreal bird populations may be conserved in the future. The boreal system has historically been an area with extensive disturbance such as fire, insect outbreaks, and wind. In addition, the boreal system is vulnerable to global climate change as well as increasing pressure on forest and water resources. Current knowledge indicates that birds play an important role in boreal forests, and... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Birds; Boreal; Conservation; Disturbance; Forests; Forestry; Natural resources; Nearctic; Palearctic; Sustainability; Trends.. |
| Ano: 1998 |
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| Sedjo, Roger A.; Sohngen, Brent; Mendelsohn, Robert. |
| This study develops cumulative carbon 'supply curves' for global forests utilizing an dynamic timber supply model for sequestration of forest carbon. Because the period of concern is the next century, and particular time points within that century, the curves are not traditional Marshallian supply curves or steady-state supply curves. Rather, the focus is on cumulative carbon cost curves (quasi-supply curves) at various points in time over the next 100 years. The research estimates a number of long-term, cumulative, carbon quasi-supply curves under different price scenarios and for different time periods. The curves trace out the relationship between an intertemporal price path for carbon, as given by carbon shadow prices, and the cumulative carbon... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Carbon supply curves; Sequestration; Timber; Forests; Model; Global warming; Prices; Markets; Resource /Energy Economics and Policy; Q10; Q15; Q21; Q23; Q24. |
| Ano: 2001 |
URL: http://purl.umn.edu/10663 |
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| Registros recuperados: 62 | |
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