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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
08/03/1999 |
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Data da última atualização: |
08/03/1999 |
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Autoria: |
HOBBS, R. J.; LEGG, C. J. |
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Afiliação: |
Department of Botany, University of Aberdeen, Scotland. Department of Biological Sciences, University of Exeter, Hatherly Laboratories, Prince of Wales Road. Exeter, U.K. |
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Título: |
Markov models and initial floristic composition in heathland vegetation dynamics. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Vegetatio, v.56, n.1, p.31-43, 1983. |
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Idioma: |
Inglês |
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Conteúdo: |
A simple Markov model is used to test the hypothesis that the floristic composition of vegetation colonizing bare ground immediately after burning is the major factor influencing post-fire development in heathland vegetation. Data are taken from stands of different ages at time of burning in a species-rich Calluna-Arctostaphylos heath in NE Scotland. It is shown that variation in the initial floristic composition of the stands is not, in itself, sufficient to produce model simulations which match observed trends, although altering the probabilities of transition from bare ground to other states allows more successful simulations. The model supports the hypothesis that stand age before burning influences the post-fire development through the process of colonization of bare ground. After a very severe fire- post-fire development may initially depend on the formation of a most cover, although this requires further study. It is concluded that simple Markov models can provide the basis for examining successional process when used in a comparative way. |
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Palavras-Chave: |
Colonization; Heathland vegetation; Inicial floristica; Initial floristics; Markov models; Modelo de Markov; Post-fire succession; Severe fire; Terra de brejo. |
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Thesagro: |
Colonização; Fogo; Vegetação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01804naa a2200277 a 4500
001 1794014
005 1999-03-08
008 1983 bl --- 0-- u #d
100 1 $aHOBBS, R. J.
245 $aMarkov models and initial floristic composition in heathland vegetation dynamics.
260 $c1983
520 $aA simple Markov model is used to test the hypothesis that the floristic composition of vegetation colonizing bare ground immediately after burning is the major factor influencing post-fire development in heathland vegetation. Data are taken from stands of different ages at time of burning in a species-rich Calluna-Arctostaphylos heath in NE Scotland. It is shown that variation in the initial floristic composition of the stands is not, in itself, sufficient to produce model simulations which match observed trends, although altering the probabilities of transition from bare ground to other states allows more successful simulations. The model supports the hypothesis that stand age before burning influences the post-fire development through the process of colonization of bare ground. After a very severe fire- post-fire development may initially depend on the formation of a most cover, although this requires further study. It is concluded that simple Markov models can provide the basis for examining successional process when used in a comparative way.
650 $aColonização
650 $aFogo
650 $aVegetação
653 $aColonization
653 $aHeathland vegetation
653 $aInicial floristica
653 $aInitial floristics
653 $aMarkov models
653 $aModelo de Markov
653 $aPost-fire succession
653 $aSevere fire
653 $aTerra de brejo
700 1 $aLEGG, C. J.
773 $tVegetatio$gv.56, n.1, p.31-43, 1983.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 1. |  | TOMICH, T. P.; TIMMER, D. W.; VELARDE, S. J.; ALEGRE, J.; ARESKOUG, V.; CASH, D. W.; CATTANEO, A.; ERICKSEN, P.; JOSHI, L.; KASYOKI, J.; LEGG, C.; LOCATELLI, M.; MURDIYARSO, D.; PALM, C.; PORRO, R.; PERAZZO, A. R.; SALAZAR-VEGA, A.; NOORDWIJK, M. van; WEISE, S.; WHITE, D. Integrative science in practice: process perspectives from ASB, the partnership for the tropical forest margins. Agriculture, Ecosystems and Environment, v. 121, p. 269-286, 2007. Parceria: ICRAF; Resourceful Solutions Consulting; ICRAF/ASB; Universidad Nacional Agraria La Molina; CBM; Executive Office of Environmental Affairs; OECD; GECAFS; IITA; CIFOR; Universidad Complutense de Madrid; IIAP; CIAT.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
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