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| 4161. |  | ROSA, G. T. da; PIRES, C. C.; SILVA, J. H. S. de; MOTTA, O. S. da. Crescimento alométrico de osso, músculo e gordura em cortes da carcaça de cordeiros Texel segundo os métodos de alimentação e peso de abate. Ciência Rural, Santa Maria, v. 35, n. 4, p. 870-876, jul./ago. 2005.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
29/05/2014 |
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Data da última atualização: |
06/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
KAINER, K. A.; WADT, L. H. de O.; STAUDHAMMER, C. L. |
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Afiliação: |
Karen A. Kainer, University of Florida; LUCIA HELENA DE OLIVEIRA WADT, CPAF-AC; Christina L. Staudhammer, University of Alabama. |
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Título: |
Testing a silvicultural recommendation: Brazil nut responses 10 years after liana cutting. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Applied Ecology, London, v. 51, n. 3, p. 655-663, June 2014. |
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DOI: |
10.1111/1365-2664.12231 |
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Idioma: |
Inglês |
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Conteúdo: |
1. Lianas or woody vines can be detrimental to the trees that support them. Research on liana cutting for tropical timber management has demonstrated positive yet costly benefits, but liana utting to enhance commercial outputs of nontimber forest products has not been examined. We implemented a controlled experiment to quantify the effects of cutting lianas on Brazil nut Bertholletia excelsa Bonpl. fecundity. 2. We conducted our 10-year experiment in a Brazilian extractive reserve where local harvesters collect fruits from this Amazonian canopy-emergent species as part of their forest-based livelihood system. We cut 454 lianas with a total basal area of 2 41 m 2 from 78 of 138 host trees ≥ 50 cm diameter at breast height. 3. Treated trees were significantly better producers 3 ½ years after liana cutting, and these differences increased dramatically in subsequent years, with consistent proportionally higher production in treated versus untreated individuals. 4. The number of lianas rooted within 5 m of the host tree significantly explained production levels, suggesting both above- and below-ground liana ? host tree competition. Once host crowns were liana-free, branch regrowth was highly visible, particularly in heavily infested trees, and crown reassessments suggested that liana cutting improved crown form. Additionally, liana cutting may induce some nonproducing trees to become producers and may circumvent mortality of trees heavily infested with lianas (> 75% crown covered). 5. Liana removal can be implemented easily when harvesting Brazil nut fruits. Only lianas associated with B. excelsa trees should be cut to conserve liana ecosystem functions. 6. Synthesis and applications. We quantified effects of liana cutting on Brazil nut host tree fecundity and provided estimates of increased commercial yields. Our long-term (10-year) study permits understanding of biological variation and informs related management decisions. Findings suggest that liana cutting reduces above- and below-ground competition with individual trees, ultimately allowing mature host crowns to recover such that 9 - 10 years after liana cutting, treated trees produced on average three times more fruits than untreated trees. Application of liana cutting to other tropical species would likely boost fruit and seed production, increase host tree fecundity and potentially enhance future recruitment. Menos1. Lianas or woody vines can be detrimental to the trees that support them. Research on liana cutting for tropical timber management has demonstrated positive yet costly benefits, but liana utting to enhance commercial outputs of nontimber forest products has not been examined. We implemented a controlled experiment to quantify the effects of cutting lianas on Brazil nut Bertholletia excelsa Bonpl. fecundity. 2. We conducted our 10-year experiment in a Brazilian extractive reserve where local harvesters collect fruits from this Amazonian canopy-emergent species as part of their forest-based livelihood system. We cut 454 lianas with a total basal area of 2 41 m 2 from 78 of 138 host trees ≥ 50 cm diameter at breast height. 3. Treated trees were significantly better producers 3 ½ years after liana cutting, and these differences increased dramatically in subsequent years, with consistent proportionally higher production in treated versus untreated individuals. 4. The number of lianas rooted within 5 m of the host tree significantly explained production levels, suggesting both above- and below-ground liana ? host tree competition. Once host crowns were liana-free, branch regrowth was highly visible, particularly in heavily infested trees, and crown reassessments suggested that liana cutting improved crown form. Additionally, liana cutting may induce some nonproducing trees to become producers and may circumvent mortality of trees heavily infested with lianas (> 75% crown c... Mostrar Tudo |
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Palavras-Chave: |
Castanha do brasil; Ciencias forestales; Cortar; Crecimiento de planta; Madera tropical; Nuez del Brasil. |
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Thesagro: |
Bertholletia excelsa; Castanha do pará; Competição biológica; Corte; Erva daninha; Essência florestal; Fator de crescimento; Parasitismo; Silvicultura. |
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Thesaurus NAL: |
Brazil nuts; Cutting; Forestry; Lianas; Parasitism; Plant growth; Tropical wood. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102793/1/25006.pdf
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|
Marc: |
LEADER 03610naa a2200421 a 4500
001 1987291
005 2021-07-06
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1111/1365-2664.12231$2DOI
100 1 $aKAINER, K. A.
245 $aTesting a silvicultural recommendation$bBrazil nut responses 10 years after liana cutting.$h[electronic resource]
260 $c2014
520 $a1. Lianas or woody vines can be detrimental to the trees that support them. Research on liana cutting for tropical timber management has demonstrated positive yet costly benefits, but liana utting to enhance commercial outputs of nontimber forest products has not been examined. We implemented a controlled experiment to quantify the effects of cutting lianas on Brazil nut Bertholletia excelsa Bonpl. fecundity. 2. We conducted our 10-year experiment in a Brazilian extractive reserve where local harvesters collect fruits from this Amazonian canopy-emergent species as part of their forest-based livelihood system. We cut 454 lianas with a total basal area of 2 41 m 2 from 78 of 138 host trees ≥ 50 cm diameter at breast height. 3. Treated trees were significantly better producers 3 ½ years after liana cutting, and these differences increased dramatically in subsequent years, with consistent proportionally higher production in treated versus untreated individuals. 4. The number of lianas rooted within 5 m of the host tree significantly explained production levels, suggesting both above- and below-ground liana ? host tree competition. Once host crowns were liana-free, branch regrowth was highly visible, particularly in heavily infested trees, and crown reassessments suggested that liana cutting improved crown form. Additionally, liana cutting may induce some nonproducing trees to become producers and may circumvent mortality of trees heavily infested with lianas (> 75% crown covered). 5. Liana removal can be implemented easily when harvesting Brazil nut fruits. Only lianas associated with B. excelsa trees should be cut to conserve liana ecosystem functions. 6. Synthesis and applications. We quantified effects of liana cutting on Brazil nut host tree fecundity and provided estimates of increased commercial yields. Our long-term (10-year) study permits understanding of biological variation and informs related management decisions. Findings suggest that liana cutting reduces above- and below-ground competition with individual trees, ultimately allowing mature host crowns to recover such that 9 - 10 years after liana cutting, treated trees produced on average three times more fruits than untreated trees. Application of liana cutting to other tropical species would likely boost fruit and seed production, increase host tree fecundity and potentially enhance future recruitment.
650 $aBrazil nuts
650 $aCutting
650 $aForestry
650 $aLianas
650 $aParasitism
650 $aPlant growth
650 $aTropical wood
650 $aBertholletia excelsa
650 $aCastanha do pará
650 $aCompetição biológica
650 $aCorte
650 $aErva daninha
650 $aEssência florestal
650 $aFator de crescimento
650 $aParasitismo
650 $aSilvicultura
653 $aCastanha do brasil
653 $aCiencias forestales
653 $aCortar
653 $aCrecimiento de planta
653 $aMadera tropical
653 $aNuez del Brasil
700 1 $aWADT, L. H. de O.
700 1 $aSTAUDHAMMER, C. L.
773 $tJournal of Applied Ecology, London$gv. 51, n. 3, p. 655-663, June 2014.
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Embrapa Acre (CPAF-AC) |
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