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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
20/01/2003 |
Data da última atualização: |
20/01/2003 |
Autoria: |
SILBERBAUER-GOTTSBERGER, I. |
Título: |
A hectare cerrado. II Flowering and fruiting of thick-stemmed woody species. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
Phyton, Horn, v. 41, n. 1, p. 129-158, 2001. |
Idioma: |
Inglês |
Conteúdo: |
In a hectare of cerrado in the minicipality of Botucatu, State of São Paulo, Brasil, individuals in flower and/or fruit were counted for 26 thick-stemmed woodyspecies (stem-circumference of 10 cm or more the height of 30 cm above ground)during 12 months, at intervals of 14 days, from April 1973 to March 1974. Although rainfall of the cerrado region is seasonal, the phenological events seem to be not well correlated with this seasonality, seasonality, whether examined on the species level nor on the individual level. No doubt, the flowering period was October and the first half of November, which is at the end of the dry season and the beginning of the rainy season, whereas during February, March, and April less flowering occurred. but across the year of the study, at least some individuals were on every census date in flower. The main fruiting period was during the rainy season, in the second half of December and first half of January. In total 53% of the individuals flowered, and of these, 72% produced ripe fruits. The majority of species have na annual flowering pattern. Duration of flowering which was defined the timespan between the flowering of the first individual of a species and the end of flowering of the last individual, was different for the species. Also the flower duration of the single individuals within one species was different. Extremely long-flowering seems to be characteristic of many thich-stemmed woody species. The long flower duration of a species my be achieved by long-flowering of the single individuals and also by low synchrony of flowering within the individuals of a species. Referring to the total of the species, duration of flowering of a species is not correlated with total number of its individuals, but the two species with the highest number of individuals also had the most of individuals with flowers and fruits. witha species tall cri6126
criindividuals flowered more frequently. The number of species and the number of individuals in flower (for each observation date) show also only moderatecorrelation. On a few observation dates the relationship was even reversed. During the dry season the few flowering species had the same number of individuals in flower as the species at the beginning of the rainy season. Throughout the year, at all survey dates, one species dominated in terms of number of individuals flowering and the same was for fruiting. In several species flowering stage and ripe fruiting stage overlapped, and the same was true for individual plants of styrax ferruginea. The study also shows that phenological surveys of a complete census of a representative area give different insights into the phenological behavior of a community and its species than surveys based on selected individuals of selected species. MenosIn a hectare of cerrado in the minicipality of Botucatu, State of São Paulo, Brasil, individuals in flower and/or fruit were counted for 26 thick-stemmed woodyspecies (stem-circumference of 10 cm or more the height of 30 cm above ground)during 12 months, at intervals of 14 days, from April 1973 to March 1974. Although rainfall of the cerrado region is seasonal, the phenological events seem to be not well correlated with this seasonality, seasonality, whether examined on the species level nor on the individual level. No doubt, the flowering period was October and the first half of November, which is at the end of the dry season and the beginning of the rainy season, whereas during February, March, and April less flowering occurred. but across the year of the study, at least some individuals were on every census date in flower. The main fruiting period was during the rainy season, in the second half of December and first half of January. In total 53% of the individuals flowered, and of these, 72% produced ripe fruits. The majority of species have na annual flowering pattern. Duration of flowering which was defined the timespan between the flowering of the first individual of a species and the end of flowering of the last individual, was different for the species. Also the flower duration of the single individuals within one species was different. Extremely long-flowering seems to be characteristic of many thich-stemmed woody species. The long flower duration of a species my ... Mostrar Tudo |
Thesagro: |
Cerrado; Floração; Frutificação. |
Categoria do assunto: |
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Marc: |
LEADER 03242naa a2200157 a 4500 001 1566032 005 2003-01-20 008 2001 bl --- 0-- u #d 100 1 $aSILBERBAUER-GOTTSBERGER, I. 245 $aA hectare cerrado. II Flowering and fruiting of thick-stemmed woody species. 260 $c2001 520 $aIn a hectare of cerrado in the minicipality of Botucatu, State of São Paulo, Brasil, individuals in flower and/or fruit were counted for 26 thick-stemmed woodyspecies (stem-circumference of 10 cm or more the height of 30 cm above ground)during 12 months, at intervals of 14 days, from April 1973 to March 1974. Although rainfall of the cerrado region is seasonal, the phenological events seem to be not well correlated with this seasonality, seasonality, whether examined on the species level nor on the individual level. No doubt, the flowering period was October and the first half of November, which is at the end of the dry season and the beginning of the rainy season, whereas during February, March, and April less flowering occurred. but across the year of the study, at least some individuals were on every census date in flower. The main fruiting period was during the rainy season, in the second half of December and first half of January. In total 53% of the individuals flowered, and of these, 72% produced ripe fruits. The majority of species have na annual flowering pattern. Duration of flowering which was defined the timespan between the flowering of the first individual of a species and the end of flowering of the last individual, was different for the species. Also the flower duration of the single individuals within one species was different. Extremely long-flowering seems to be characteristic of many thich-stemmed woody species. The long flower duration of a species my be achieved by long-flowering of the single individuals and also by low synchrony of flowering within the individuals of a species. Referring to the total of the species, duration of flowering of a species is not correlated with total number of its individuals, but the two species with the highest number of individuals also had the most of individuals with flowers and fruits. witha species tall cri6126 criindividuals flowered more frequently. The number of species and the number of individuals in flower (for each observation date) show also only moderatecorrelation. On a few observation dates the relationship was even reversed. During the dry season the few flowering species had the same number of individuals in flower as the species at the beginning of the rainy season. Throughout the year, at all survey dates, one species dominated in terms of number of individuals flowering and the same was for fruiting. In several species flowering stage and ripe fruiting stage overlapped, and the same was true for individual plants of styrax ferruginea. The study also shows that phenological surveys of a complete census of a representative area give different insights into the phenological behavior of a community and its species than surveys based on selected individuals of selected species. 650 $aCerrado 650 $aFloração 650 $aFrutificação 773 $tPhyton, Horn$gv. 41, n. 1, p. 129-158, 2001.
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