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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/12/2002 |
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Data da última atualização: |
11/02/2009 |
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Autoria: |
SIMPSON, B. B. |
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Título: |
A revision of the genus Polylepis (Rosaceae: Sanguisorbeae). |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Washington: Smithsonian Institution, 1979. |
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Páginas: |
62p. |
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Descrição Física: |
il. |
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Idioma: |
Inglês |
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Conteúdo: |
Species of Polylepis are shrubs or trees native to the mid- and high-elevation tropical Andes. Some species of Polylepis form woodlands growing well above normal treeline within grass and scrub associations at elevations over 5000 m. Consequently, Polylepis appears to be the highest natural occurring arborescent angiosperm genus in the world. The physiological basis allowing such high altitude growth is not understood, but evidence indicates that woodlands at these elevations are restricted to microsites where ecological conditions are similar to those of lower altitudes. The genus is distinct from other rosaceous members of the tribe Sanguisorbeae and is interpreted here as consisting of three species groups that appear to have spread independently north and south along the Andean chain. Because of the pacthy distributions of populations and disturbences by man, species are often polytopic. Asa a result, numerous forms have been described as distinct taxa in the past. In addition, hybridization appears to occur between species making circumscription of some taxa difficult. In this revision, evidence from studies of gross morphology, leaflet anatomy, pollen morphology, and field observations of the autecology of various populations were used to ascertain the number of species within te genus and their relationships to one another. Data from these sources indicate that Polylepis should be considered as consisting of 15 species, one of which is first described in this treatment. A key for the identification of the species is provided. Each species is illustrated, discussed, and its modern distribution mapped. MenosSpecies of Polylepis are shrubs or trees native to the mid- and high-elevation tropical Andes. Some species of Polylepis form woodlands growing well above normal treeline within grass and scrub associations at elevations over 5000 m. Consequently, Polylepis appears to be the highest natural occurring arborescent angiosperm genus in the world. The physiological basis allowing such high altitude growth is not understood, but evidence indicates that woodlands at these elevations are restricted to microsites where ecological conditions are similar to those of lower altitudes. The genus is distinct from other rosaceous members of the tribe Sanguisorbeae and is interpreted here as consisting of three species groups that appear to have spread independently north and south along the Andean chain. Because of the pacthy distributions of populations and disturbences by man, species are often polytopic. Asa a result, numerous forms have been described as distinct taxa in the past. In addition, hybridization appears to occur between species making circumscription of some taxa difficult. In this revision, evidence from studies of gross morphology, leaflet anatomy, pollen morphology, and field observations of the autecology of various populations were used to ascertain the number of species within te genus and their relationships to one another. Data from these sources indicate that Polylepis should be considered as consisting of 15 species, one of which is first described in this treatmen... Mostrar Tudo |
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Palavras-Chave: |
Polylepis. |
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Thesagro: |
Botânica; Morfologia Vegetal; Taxonomia Vegetal. |
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Thesaurus Nal: |
botany; plant anatomy; taxonomy. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02164nam a2200205 a 4500
001 1392810
005 2009-02-11
008 1979 bl uuuu 00u1 u #d
100 1 $aSIMPSON, B. B.
245 $aA revision of the genus Polylepis (Rosaceae$bSanguisorbeae).
260 $aWashington: Smithsonian Institution$c1979
300 $a62p.$cil.
520 $aSpecies of Polylepis are shrubs or trees native to the mid- and high-elevation tropical Andes. Some species of Polylepis form woodlands growing well above normal treeline within grass and scrub associations at elevations over 5000 m. Consequently, Polylepis appears to be the highest natural occurring arborescent angiosperm genus in the world. The physiological basis allowing such high altitude growth is not understood, but evidence indicates that woodlands at these elevations are restricted to microsites where ecological conditions are similar to those of lower altitudes. The genus is distinct from other rosaceous members of the tribe Sanguisorbeae and is interpreted here as consisting of three species groups that appear to have spread independently north and south along the Andean chain. Because of the pacthy distributions of populations and disturbences by man, species are often polytopic. Asa a result, numerous forms have been described as distinct taxa in the past. In addition, hybridization appears to occur between species making circumscription of some taxa difficult. In this revision, evidence from studies of gross morphology, leaflet anatomy, pollen morphology, and field observations of the autecology of various populations were used to ascertain the number of species within te genus and their relationships to one another. Data from these sources indicate that Polylepis should be considered as consisting of 15 species, one of which is first described in this treatment. A key for the identification of the species is provided. Each species is illustrated, discussed, and its modern distribution mapped.
650 $abotany
650 $aplant anatomy
650 $ataxonomy
650 $aBotânica
650 $aMorfologia Vegetal
650 $aTaxonomia Vegetal
653 $aPolylepis
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
23/12/2019 |
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Data da última atualização: |
23/12/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CONSTANTINO, N. A. S.; DIAS, J. A.; OLIVEIRA, A. M. de; CORDEIRO, S. C. M.; BELOTI, V.; FARIA, G. V. |
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Afiliação: |
Naíle Ágata Souza Constantino, Faculdades Integradas Aparício Carvalho; JULIANA ALVES DIAS, CPAF-RO; Audenice Miranda de Oliveira, Universidade Federal de Rondônia; Stefany Cristina Macedo Cordeiro; Vanerli Beloti, Universidade Estadual de Londrina; Guilherme Vieira Faria, Faculdades Integradas Aparício Carvalho. |
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Título: |
Pontos críticos de contaminação microbiológica do leite cru nas condições de produção prevalentes em Rondônia. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: CONGRESSO INTERNACIONAL DE PECUÁRIA LEITEIRA DA AMAZÔNIA OCIDENTAL, 1., 2019, Rio Branco, AC. Anais... Rio Branco, AC: Edufac, 2019. |
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Páginas: |
p. 75. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo do trabalho foi avaliar a microbiota deteriorante do leite em pontos de contaminação da ordenha de quatro propriedades leiteiras com características de manejo e instalações predominantes em Rondônia. |
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Palavras-Chave: |
Qualidade do leite. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/207785/1/AnaisCongresso19122019-p75.pdf
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Marc: |
LEADER 00918nam a2200193 a 4500
001 2117637
005 2019-12-23
008 2019 bl uuuu u00u1 u #d
100 1 $aCONSTANTINO, N. A. S.
245 $aPontos críticos de contaminação microbiológica do leite cru nas condições de produção prevalentes em Rondônia.$h[electronic resource]
260 $aIn: CONGRESSO INTERNACIONAL DE PECUÁRIA LEITEIRA DA AMAZÔNIA OCIDENTAL, 1., 2019, Rio Branco, AC. Anais... Rio Branco, AC: Edufac$c2019
300 $ap. 75.
520 $aO objetivo do trabalho foi avaliar a microbiota deteriorante do leite em pontos de contaminação da ordenha de quatro propriedades leiteiras com características de manejo e instalações predominantes em Rondônia.
653 $aQualidade do leite
700 1 $aDIAS, J. A.
700 1 $aOLIVEIRA, A. M. de
700 1 $aCORDEIRO, S. C. M.
700 1 $aBELOTI, V.
700 1 $aFARIA, G. V.
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Embrapa Rondônia (CPAF-RO) |
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