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Registros recuperados: 62
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Species richness and distribution of bryophytes within different phytophysiognomies in the Chapada Diamantina region of Brazil Acta Botanica
Valente,Emilia de Brito; Pôrto,Kátia Cavalcanti; Bastos,Cid José Passos.
The Chapada Diamantina ecoregion is within the caatinga (shrublands) biome of Brazil. Environmental factors determine the phytophysiognomies that distinguish the ecoregion from the surrounding areas. This study aimed to investigate the distribution of bryophyte flora in this ecoregion, by phytophysiognomy and elevational zone. Analyzing specimens we collected from five municipalities in the region, together with specimens (previously collected from the region) in herbaria, we identified 400 taxa. The phytophysiognomies that presented the highest species richness and the greatest numbers of exclusive taxa were forests and campos rupestres (dry, rocky grasslands), which respectively accounted for 51% and 40% of the taxa, compared with only 5% and 4%,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mosses; Liverworts; Forests; Campos rupestres; Elevational zonation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200006
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Conflitos socioeconômicos-ambientais relativos ao avanço do cultivo da soja em áreas de influência dos eixos de integração e desenvolvimento no Estado de Mato Grosso - DOI: 10.4025/actasciagron.v30i4.5305 Agronomy
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...
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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Mapping and evaluation of the state of conservation of the vegetation in and surrounding the Chapada Diamantina National Park, NE Brazil Biota Neotropica
Funch,Roy Richard; Harley,Raymond Mervyn; Funch,Ligia Silveira.
The Chapada Diamantina National Park (CDNP) was created in the midst of a densely populated area, and significant sections of the reserve are still undergoing processes of natural regeneration after intensive diamond mining activities were initiated in the mid-1800's. An up-to-date vegetation map was needed in order to indicate the types and distribution of regional vegetation assemblages in an easily interpretable manner and at an appropriate planning scale that could be easily consulted by decision makers and other interested groups at all levels of conservation (and development) planning. A vegetation map of the Chapada Diamantina National Park, and the areas immediately surrounding it, was prepared that: 1) delimits, describes, and maps the regional...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vegetation map; Conservation planning; Vegetation assemblages; Forests.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000200001
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Tree species sprouting from root buds in a semideciduous forest affected by fires BABT
Rodrigues,Ricardo R.; Torres,Roseli B.; Matthes,Luis A. F.; Penha,Alessandra S..
Tree species which sprouted from root buds were identified in a 3.6ha area of a Semideciduous Seasonal Forest fragment in Campinas, São Paulo State (22° 55' S and 47° 05' W), affected by several fires. Connection between sprouts and main trunk root system was confirmed by digging and root exposure. Twenty seven tree species with root buds were identified, with a high proportion of Leguminosae species. The majority of identified species (45%) were characteristic of initial secondary succession stages. Distances between sprouts and main trunks varied from 0.6m (Guettarda viburnioides Cham. and Schltdl- Rubiaceae.) to 14.0m (Colubrina glandulosa Perkins- Rhamnaceae). These results lead discussions about natural and/or human-made disturbances influence on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disturbances; Forests; Fire; Root buds; Sprouting; Vegetative propagation.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100017
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A QUESTÃO AMBIENTAL: FLORESTAS E BIODIVERSIDADE Ciências Agrárias
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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Diversity Of Saprotrophic Anamorphic Ascomycetes From Native Forests In Argentina: An Updated Revi Darwiniana
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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Impacto del programa de servicios ambientales hidrológicos en tres ejidos de Texcoco, México. Colegio de Postgraduados
Ruíz Jiménez, Mónica.
El objetivo de la presente investigación fue identificar el impacto del Programa de Pago por Servicios Ambientales Hidrológicos (PSAH) desde la percepción de los propios beneficiarios del programa en tres ejidos forestales del municipio de Texcoco que recibieron apoyos de la Comisión Nacional Forestal (CONAFOR) del año 2005 al 2010. El estudio también incluyó una encuesta entre la población de Texcoco para identificar la disposición a pagar (DAP) a los dueños de los bosques a fin de que sigan conservándolos y proveyendo de los servicios ambientales hidrológicos. Los resultados indican que los beneficiarios no perciben impactos positivos directos en su bienestar social y económico porque los recursos recibidos del PSAH se destinaron a obras de conservación...
Palavras-chave: Servicios ambientales; Bosque; Conservación pasiva; Ejidos forestales; Impactos; Ecosystem services; Forests; Passive conservation; Forest ejidos; Impacts; Desarrollo Rural; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/2174
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REDD+ and Human Rights: Addressing Synergies between International Regimes Ecology and Society
Savaresi, Annalisa; School of Law, University of Edinburgh; annalisa.savaresi@ed.ac.uk.
The making of the REDD+ mechanism in the framework of the United Nations Framework Convention on Climate Change (UNFCCC) has raised specific concerns on how to reconcile incentives for forest carbon sequestration with the protection of the rights of the numerous communities that rely upon forests for their livelihood, shelter, and survival. Although the nascent REDD+ mechanism provides an opportunity to provide multiple benefits, the design of a framework to secure such benefits and avoid perverse outcomes has proven complex. I provide an overview of progress toward the establishment of such framework, arguing that concerns over the social impact of REDD+ activities may be addressed by resorting to clearer and stronger links with human rights instruments.
Tipo: Peer-Reviewed article Palavras-chave: Climate change; FLEGT; Forests; Human rights; Nagoya Protocol; REDD+.
Ano: 2013
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Quantifying the Road-Effect Zone: Threshold Effects of a Motorway on Anuran Populations in Ontario, Canada Ecology and Society
Eigenbrod, Felix; Geomatics and Landscape Ecology Research Laboratory, Department of Biology, Carleton University, Ottawa, Canada; felix.eigenbrod@gmail.com; Hecnar, Stephen J.; Department of Biology, Lakehead University, Thunder Bay, Ontario, Canada; shecnar@lakeheadu.ca; Fahrig, Lenore; Geomatics and Landscape Ecology Research Laboratory, Department of Biology, Carleton University, Ottawa, Ontario Canada; lfahrig@ccs.carleton.ca.
Tipo: Peer-Reviewed Reports Palavras-chave: Accessible habitat; Amphibian decline; Anuran populations; Ecological thresholds; Forests; Fragmentation; Habitat loss; Piecewise regression; Road ecology..
Ano: 2009
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Integrating Ecological and Social Ranges of Variability in Conservation of Biodiversity: Past, Present, and Future Ecology and Society
Duncan, Sally L.; Institute for Natural Resources, Oregon State University; Sally.Duncan@oregonstate.edu; McComb, Brenda C; University of Masschusetts-Amherst; brenda.mccomb@oregonstate.edu; Johnson, K. Norman; College of Forestry, Oregon State University; norm.johnson@oregonstate.edu.
Tipo: Peer-Reviewed Reports Palavras-chave: Forests; Future range of variability; Historical range of variability; Social acceptability; Social range of variability.
Ano: 2010
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Social-ecological Resilience of a Nuosu Community-linked Watershed, Southwest Sichuan, China Ecology and Society
Urgenson, Lauren S; School of Forest Resources, University of Washington; lsu@u.washington.edu; Hagmann, R. Keala; School of Forest Resources, University of Washington ; hokulea@u.washington.edu; Henck, Amanda C; Earth and Space Sciences, University of Washington; achenck@u.washington.edu; Harrell, Stevan; Anthropology, University of Washington; stevehar@u.washington.edu; Hinckley, Thomas M; School of Forest Resources, University of Washington ; hinckley@u.washington.edu; Shepler, Sara Jo; School of Forest Resources, University of Washington; coffee-punk@hotmail.com; Grub, Barbara L.; Anthropology, University of Washington; blg@u.washington.edu; Chi, Philip M; ; philmcuw@yahoo.com.
Farmers of the Nuosu Yi ethnic group in the Upper Baiwu watershed report reductions in the availability of local forest resources. A team of interdisciplinary scientists worked in partnership with this community to assess the type and extent of social-ecological change in the watershed and to identify key drivers of those changes. Here, we combine a framework for institutional analysis with resilience concepts to assess system dynamics and interactions among resource users, resources, and institutions over the past century. The current state of this system reflects a legacy of past responses to institutional disturbances initiated at the larger, national system scale. Beginning with the Communist Revolution in 1957 and continuing through the next two...
Tipo: Peer-Reviewed Reports Palavras-chave: China; Forests; Institutions; Nuosu; Resilience; Sichuan; Yi.
Ano: 2010
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Understanding the Risk to Neotropical Migrant Bird Species of Multiple Human-Caused Stressors: Elucidating Processes Behind the Patterns. Ecology and Society
Hames, Ralph S.; Cornell Laboratory of Ornithology; rsh5@cornell.edu; Lowe, James D.; Cornell Laboratory of Ornithology; jdl6@cornell.edu; Swarthout, Sara Barker; Cornell Laboratory of Ornithology; sb65@cornell.edu; Rosenberg, Kenneth V.; Cornell Laboratory of Ornithology; kvr2@cornell.edu.
Ubiquitous human-caused changes to the environment act as multiple stressors for organisms in the wild, and the effects of these stressors may be synergistic, rather than merely additive, with unexpected results. However, understanding how focal organisms respond to these stressors is crucial for conservation planning for these species. We propose a paradigm that alternates extensive, broadscale data collection by volunteer collaborators to document patterns of response, with intensive fine-scale studies by professional researchers, to elucidate the processes underlying these patterns. We demonstrate this technique, building on our existing work linking patterns of population declines in the Wood Thrush (Hylocichla mustelina) to synergistic effects of acid...
Tipo: Peer-Reviewed Reports Palavras-chave: Multiple scales; Synergistic effects; Citizen science; Habitat fragmentation; Acid rain; Forests; Anthropogenic change; Soil; Calcium; Invertebrates.
Ano: 2006
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Ecological Sustainability of Birds in Boreal Forests Ecology and Society
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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Resumos expandidos... Infoteca-e
SIMPÓSIO SILVICULTURA NA AMAZÔNIA ORIENTAL: CONTRIBUIÇÕES DO PROJETO EMBRAPA/DFID, 1999, Belém, PA..
Tipo: Anais e Proceedings de eventos Palavras-chave: Manejo florestal; Brasil; Forestry operation; Análise Econômica; Ecologia Florestal; Exploração Florestal; Floresta; Mecanização; Semente Florestal; Silvicultura; Amazonia; Forests; Economic analysis; Forest ecology; Forest management; Mechanization; Seeds; Silviculture.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/393767
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Comparação entre espécies florestais nativas em Foz do Iguaçu, PR. Infoteca-e
CARVALHO, P. E. R.; ZELAZOWSKI, W. H.; KAMINSKI, N. L.; LOPES, G. L..
Tipo: Folhetos Palavras-chave: Comportamento; Espécie florestal; Foz do Iguaçu; Behaviour; Reflorestamento; Silvicultura; Forests; Reforestation; Silviculture.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290786
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Uso de curva de potencia na determinacao de series relativas continuas de forma para especies florestais. Infoteca-e
GUIMARAES, D. P..
Tipo: Folhetos Palavras-chave: Povoamento; Volume tables; Species; Araucária Angustifólia; Eucalipto; Eucalyptus Grandis; Espécie; Floresta; Modelo Matemático; Volume; Forests; Mathematical models.
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549442
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Zoneamento ecológico para plantios florestais no Estado de Santa Catarina. Infoteca-e
CARPANEZZI, A. A.; PEREIRA, J. C. D.; CARVALHO, P. E. R.; REIS, A.; VIEIRA, A. R. R.; ROTTA, E.; STURION, J. A.; RAUEN, M. de J.; SILVEIRA, R. A..
Tipo: Livros Palavras-chave: Zoneamento bioclimático; Brasil; Santa Catarina; Zonation; Environments; Climatics zones; Espécie exótica; Bioma; Zoneamento; Ecologia Florestal; Meio Ambiente; Forests; Forest ecology.
Ano: 1988 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/294054
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ESCOLHA e manejo do componente arbóreo em sistemas ILPF: programa 32: Centro-Oeste/Sudeste. Infoteca-e
O Prosa Rural desta semana fala sobre o uso de árvores em sistemas de integração lavoura-pecuária-floresta ( ILPF) - estratégia de produção que integra diferentes sistemas produtivos, agrícolas, pecuários e florestais dentro de uma mesma área. O pesquisador Maurel Behling, da Embrapa Agrossilvipastoril, traz explicações sobre a escolha da espécie arbórea, a definição do espaçamento e da configuração, bem como os cuidados que o produtor deve tomar na condução e manejo das árvores.
Tipo: Gravações de som Palavras-chave: Árvore; Lavoura; Pecuária; Floresta; Espaçamento; Produtor; Trees; Tillage; Forests; Livestock.
Ano: 2020 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124740
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Florestas no Nordeste brasileiro. Infoteca-e
DRUMOND, M. A..
Estudos recentes tem mostrado desmatamento excessivo em áreas sob risco de desertificação.
Tipo: Artigo na mídia Palavras-chave: Potencialidade; Floresta; Silvicultura; Reflorestamento; Eucalyptus; Forests; Reforestation; Forestry.
Ano: 2011 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/895189
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Utilização de lodo de esgoto aeróbico e calado em florestas. Infoteca-e
LOURENCO, R. S..
Tipo: Folhetos Palavras-chave: Lodo de esgoto; Solo; Nutrição; Floresta; Forests; Sewage sludge.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/290855
Registros recuperados: 62
Primeira ... 1234 ... Última
 

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