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| Registros recuperados: 32 | |
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| ARAUJO, H. J. B. de; SILVA, Y. F. da. |
| Por meio de técnicas de restauração, florestas exauridas podem ser conduzidas de maneira a minimizar os efeitos da exploração seletiva que as modificaram. O plantio de mudas é um método rápido e eficaz de restauração de florestas. Este trabalho objetiva descrever os resultados de plantios de enriquecimento de florestas de produção nos municípios de Xapuri, Brasiléia e Rio Branco, no estado do Acre. Foram utilizadas dez espécies florestais madeireiras comerciais: amarelão (Aspidosperma vargasii A. DC.), angelim (Ormosia arborea (Vell.) Harms), cedro (Cedrela odorata L.), cerejeira (Amburana acreana (Ducke) A. C. Sm.), freijó (Cordia alliodora (Ruiz & Pav.) Oken), ipê (Tabebuia serratifolia (Vahl) G. Nicholson), itaúba (Mezilaurus itauba (Meisn.) Taub.... |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Amarelão; Aspidosperma vargasii; Ormosia arborea; Cedrela mexicana; Brazilian copal; Timbaúba; Exploração seletiva; Plantio de enriquecimento; Projeto de Assentamento Agroextrativista Chico Mendes; Seringal Cachoeira; Xapuri (AC); Seringal Filipinas; RESEX Chico Mendes; Brasiléia (AC); Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Enterolobium maximum; Rendimiento de los cultivos.; Bosques tropicales; Reforestacion; Madera tropical; Investigación; Explotación forestal; Floresta tropical; Exploração florestal; Extração da madeira; Impacto ambiental; Reflorestamento; Pesquisa florestal; Projeto de pesquisa; Essência florestal; Rendimento; Angelim; Cedro; Cedrela odorata; Cerejeira amarela; Amburana acreana; Freijó louro; Cordia alliodora; Ipê; Tabebuia serratifolia; Itaúba; Mezilaurus itauba; Jatobá; Hymenaea courbaril; Mogno; Swietenia macrophylla; Timboúva; Campo Experimental.; Tropical forests; Logging; Environmental impact; Reforestation; Research; Tropical wood; Crop yield; Handroanthus serratifolius.. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1072846 |
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| ARAUJO, H. J. B. de; CORREIA, M. F.; SIVIERO, A.; MACEDO, P. E. F. de; OLIVEIRA, L. C. de. |
| Por meio de procedimentos e técnicas de restauração que considerem a escolha apropriada das espécies (principalmente quanto às características econômicas e ambientais), florestas exauridas de espécies comerciais podem ser conduzidas de maneira a reverter, ou minimizar, os efeitos da exploração seletiva que modificou sua estrutura original. Além disso, é fundamental que a condução posterior aos procedimentos de restauração seja feita de modo a garantir a sustentabilidade das espécies em florestas de produção. Este trabalho objetiva descrever os métodos utilizados, as etapas iniciais de implantação, a definição de espécies aptas e os resultados preliminares de plantios de enriquecimento com espécies florestais madeireiras de alto valor comercial em áreas de... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Manejo florestal; Manejo seletivo; Xapuri (AC); Brasiléia (AC); Rio Branco (AC); Acre; Amazonia Occidental; Amazônia Ocidental; Western Amazon; Esploração da madeira; Madera tropical; Explotación forestal; Regeneración artificial.; Manejo forestal; Impacto ambiental; Administração florestal; Regeneração artificial; Essência florestal.; Forest management; Logging; Tropical wood; Environmental impact; Artificial regeneration.. |
| Ano: 2013 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/982061 |
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| Smits, W.Th.M.. |
| Each dipterocarp has its own species of fungus, forming an ectomycorrhiza. From literature and experiments (in East Kalimantan and in vitro) ecological consequences are explored. These help explain the clumping of dipterocarp trees in the forest, the lack of hybrids, the poor dispersal, and speciation as dependent on the viability of the root-fungus combination on a particular soil type. Mycorrhizas are located in the top soil. They are extremely sensitive to increase of soil temperatures as occur after canopy opening, and to soil compaction by machinery and log skidding. This explains the setback of dipterocarp growth after crude logging. It is suggested that avoidance of soil compaction during logging, quick restoration of soil cover, and the use of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dipterocarpaceae; Ecology; Enrichment planting; Logging; Management; Mycorrhiza. |
| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/532967 |
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| Nijman, Vincent. |
| Hose’s leaf monkey Presbytis hosei is endemic to Borneo and occurs only in tall forest. In recent decades Borneo has lost a large part of its forest cover, mostly in low-lying coastal regions. Large intact tracts of forest remain in the interior, but these are by and large inhabited by tribes that subsist in part by hunting. The combined effects of habitat disturbance and hunting on the densities and biomass of Hose’s leaf monkey were studied in Kayan Mentarang National Park in Borneo’s far interior. Over four months, data on densities and hunting were collected by transect walks in four forest types. Hose’s leaf monkeys were hunted to deter crop-raiding, for their meat, and to obtain bezoar stones (visceral secretions used in traditional medicine). Hose’s... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Colobines; Conservation; Logging; Primates; Shifting cultivation. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/534367 |
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| Ndongo, D.; Peter, S.; Priso, R.J.; Dibong, D.S.; François, B.. |
| The Cameroon mangroves are exploited by local communities through fishing, hunting, and especially logging for fuel-wood and charcoal. The changing demographic patterns in the region have increased the need of citizens in the urban centres, which in turn, has accelerated the pressure on the neighbouring forests. The objective of these studies was to assess the impact of local communities on the mangroves’ development. Through an eight point semi-structured questionnaire, 120 mangrove loggers were interviewed in the local markets in Douala. The survey data show that 61% of respondents are permanent workers and do not envisage quitting this mode of employment. The surface area destroyed annually approximates 1000 ha. Species of the genus Rhizophora are... |
| Tipo: Journal Contribution |
Palavras-chave: Logging; Mangroves. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/5476 |
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| Sedjo, Roger A.. |
| Unlike other resources such as petroleum, coal, and copper, forests are renewable. Yet, in many respects forests historically have been treated as a nonrenewable resource in that forest stocks were depleted or "mined" and loggers moved on to exploit other "deposits." The lands were often put to other uses, typically agricultural, or allowed to regenerate naturally. This paper looks at technical change in forest extraction, i.e., logging under a number of different conditions. It finds that, on average, labor productivity has been increasing in recent decades. However, total factor productivity in the US has declined in recent years. In addition, the study examines the tree-growing potential of plantation forestry. It finds that there is underway a... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Productivity; Resources; Forests; Timber; Technology; Innovations; Plantations; Logging; Genetics; Extraction; Resource /Energy Economics and Policy; O31; O32; O50; O51; Q23. |
| Ano: 1997 |
URL: http://purl.umn.edu/10667 |
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| Basset,Yves; Charles,Elroy. |
| An annotated list of the free-living insect herbivores collected on the seedlings of five rainforest tree species of economic importance near Mabura Hill, Guyana, is presented. The host plants were Chlorocardium rodiei (Scomb.) (Lauraceae), Mora gonggrijpii (Kleinh.) Sandw. (Caesalpiniaceae), Eperua rubiginosa Miq. (Caesalpiniaceae), Pentaclethra macroloba (Willd.) Kuntze (Leguminosae,) and Catostemma fragrans Benth. (Bombacaceae). During the monitoring of approximately 10,000 seedlings at monthly intervals during two years, 27,735 insect individuals were collected representing 604 species. Leaf-chewing insects were further tested in captivity, to remove transient and non-feeding species. The most common higher taxa included Psyllidae, Cicadellinae,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Catostemma; Chlorocardium; Eperua; Logging; Rain forest. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000300006 |
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| Registros recuperados: 32 | |
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