Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central
The flood pulse of Amazonian rivers imposes on organisms that inhabit the floodplains, the alternation between a water phase and a terrestrial phase. In response to periodic flooding, plants have developed adaptations and specific growth patterns. Montrichardia arborescens (L.) Schott is an aquat...
| Autor principal: | Pantoja, Pauline Oliveira |
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| Grau: | Dissertação |
| Idioma: | por |
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Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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https://repositorio.inpa.gov.br/handle/1/11915 http://lattes.cnpq.br/7978411226932418 |
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oai:repositorio:1-11915 Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central Pantoja, Pauline Oliveira Piedade, Maria Teresa Fernandez Herbáceas aquáticas Várzea Igapó The flood pulse of Amazonian rivers imposes on organisms that inhabit the floodplains, the alternation between a water phase and a terrestrial phase. In response to periodic flooding, plants have developed adaptations and specific growth patterns. Montrichardia arborescens (L.) Schott is an aquatic herb occurring in nutrient-poor floodplain (igapós), while Montrichardia linifera (Arruda) Schott occurs in nutrient-rich- floodplain (várzeas). This study aimed to compare the two species over a hydrological cycle, the growth rates, density of stems, biomass, phenology, and chlorophyll content. It was measure the macronutrient (Ma) and micronutrients (Mi) of the species in aquatic and terrestrial phases. The study was conducted in Curari, in the Solimões River (S 03 ° 17'38, 5 "W 059 ° 55'47, 9"), and Praia Grande on the Rio Negro (03 ° 02'18 S, 9 "; W 060 ° 32'47, 7 "). At eight points in each environment were scored five steams with leaves (CF) and shoots without leaves (SF) to measure the height and number of leaves during 11 months. In the terrestrial phase were collected all individuals of two species in 1m2 (n = 10) for the determination of dry biomass. The density of stems was established by the difference between fresh height and dry height of five stems at each point. (n = 50). For the determination of Ma and Mi in tissues plants, 10 plants of each species were collected and made composite samples. The stems of M. arborescens showed higher growth rate comparing to M. linifera (F = 4.85, p <0.05), but the growth rate of shoots did not differ between species (F = 3.22 p> 0.05). The biomass among species was not significantly different (F = 0.22, p> 0.05). The stem density was higher in M. arborescens (0.10g/m3) than in M. linifera (0.05 g/m3). Flowering and fruiting occur in two peaks, one in phase aquatic and another in the terrestrial phase. There was little reduction in chlorophyll (less than 10%) in the species during flooding. There was also a reduction in nutrient concentrations of 23% (Ma) and 27% (Mi) in M. arborescens, and 14.21% (Ma) and 32.72% (Mi) in M. linifera. There were differences in the pattern of growth and size structure. The results indicate that the species M. arborescens has no restrictions for growth in igapó. Detailed investigations on the evolution and genetics of these two species are required which may elucidate its differential distribution in Amazonian floodplains. O pulso de inundação dos rios amazônicos impõe anualmente aos organismos que habitam as áreas alagáveis a alternância entre uma fase aquática e uma fase terrestre. Em resposta a inundação periódica as plantas desenvolveram adaptações e padrões específicos de crescimento. Montrichardia arborescens (L.) Schott é uma herbácea aquática de ocorrência nas áreas alagáveis por águas pobres em nutrientes (igapós), e Montrichardia linifera (Arruda) Schott ocorre em áreas ricas em nutrientes (várzeas). Este trabalho objetivou comparar ambas as espécies, ao longo de um ciclo hidrológico, quanto às taxas de crescimento, densidade dos talos, a biomassa, a fenologia, e quantidade de clorofila. Foi medida a concentração de macronutrientes (Ma) e micronutrientes (Mi) das espécies nas fases de cheia e seca. O estudo foi realizado no Curari, no rio Solimões (S 03°17’38,5”; W 059°55’47,9”), e na Praia Grande no rio Negro (S 03°02’18,9”; W 060°32’47,7”). Em oito pontos em cada ambiente foram marcados cinco talos com folhas (CF) e brotos sem folha (SF), para medir a altura e o número de folhas durante 11 meses. Na fase terrestre foram coletados todos os indivíduos das duas espécies presentes em 1m2 (n=10), para a determinação da biomassa seca. A densidade dos talos foi obtida pela diferença entre o peso fresco e peso seco de cinco talos de cada ponto (n = 50). Para a determinação de Ma e Mi nos tecidos das plantas, 10 plantas de cada espécie foram coletadas e feitas amostras compostas. Os talos CF de M. arborescens apresentaram maior taxa de crescimento em relação a M. linifera (F = 4,85; p < 0,05), porém, a taxa de crescimento dos brotos não diferiu entre as espécies (F = 3,22 p > 0,05). A biomassa entre as espécies tampouco diferiu significativamente (F = 0,22; p > 0,05). A densidade dos talos foi maior em M. arborescens (0.10g/m3) do que em M. linifera (0,05g/m3). A floração e frutificação ocorrem em dois picos, um na fase aquática e outro na terrestre. Durante a inundação a concentração de nutrientes sofreu redução de até 23% (Ma) e 27% (Mi) em M. arborescens; e de 14,21% (Ma) e 32,72% (Mi) em M. linifera; houve também redução na clorofila nas folhas das espécies (menos de 10%). Os resultados indicam que a espécie M. arborescens não apresenta restrições de crescimento no igapó. Investigações detalhadas sobre a evolução e genética dessas duas espécies são necessárias para poder elucidar sua distribuição diferencial nas áreas alagáveis amazônicas. 2020-02-17T18:03:29Z 2020-02-17T18:03:29Z 2011-04-06 Dissertação https://repositorio.inpa.gov.br/handle/1/11915 http://lattes.cnpq.br/7978411226932418 por Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Instituto Nacional de Pesquisas da Amazônia - INPA Ecologia |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
por |
| topic |
Herbáceas aquáticas Várzea Igapó |
| spellingShingle |
Herbáceas aquáticas Várzea Igapó Pantoja, Pauline Oliveira Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central |
| topic_facet |
Herbáceas aquáticas Várzea Igapó |
| description |
The flood pulse of Amazonian rivers imposes on organisms that inhabit the floodplains, the
alternation between a water phase and a terrestrial phase. In response to periodic flooding,
plants have developed adaptations and specific growth patterns. Montrichardia arborescens
(L.) Schott is an aquatic herb occurring in nutrient-poor floodplain (igapós), while
Montrichardia linifera (Arruda) Schott occurs in nutrient-rich- floodplain (várzeas). This
study aimed to compare the two species over a hydrological cycle, the growth rates, density of
stems, biomass, phenology, and chlorophyll content. It was measure the macronutrient (Ma)
and micronutrients (Mi) of the species in aquatic and terrestrial phases. The study was
conducted in Curari, in the Solimões River (S 03 ° 17'38, 5 "W 059 ° 55'47, 9"), and Praia
Grande on the Rio Negro (03 ° 02'18 S, 9 "; W 060 ° 32'47, 7 "). At eight points in each
environment were scored five steams with leaves (CF) and shoots without leaves (SF) to
measure the height and number of leaves during 11 months. In the terrestrial phase were
collected all individuals of two species in 1m2 (n = 10) for the determination of dry biomass.
The density of stems was established by the difference between fresh height and dry height of
five stems at each point. (n = 50). For the determination of Ma and Mi in tissues plants, 10
plants of each species were collected and made composite samples. The stems of M.
arborescens showed higher growth rate comparing to M. linifera (F = 4.85, p <0.05), but the
growth rate of shoots did not differ between species (F = 3.22 p> 0.05). The biomass among
species was not significantly different (F = 0.22, p> 0.05). The stem density was higher in M.
arborescens (0.10g/m3) than in M. linifera (0.05 g/m3). Flowering and fruiting occur in two
peaks, one in phase aquatic and another in the terrestrial phase. There was little reduction in
chlorophyll (less than 10%) in the species during flooding. There was also a reduction in
nutrient concentrations of 23% (Ma) and 27% (Mi) in M. arborescens, and 14.21% (Ma) and
32.72% (Mi) in M. linifera. There were differences in the pattern of growth and size structure.
The results indicate that the species M. arborescens has no restrictions for growth in igapó.
Detailed investigations on the evolution and genetics of these two species are required which
may elucidate its differential distribution in Amazonian floodplains. |
| author_additional |
Piedade, Maria Teresa Fernandez |
| author_additionalStr |
Piedade, Maria Teresa Fernandez |
| format |
Dissertação |
| author |
Pantoja, Pauline Oliveira |
| title |
Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central |
| title_short |
Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central |
| title_full |
Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central |
| title_fullStr |
Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central |
| title_full_unstemmed |
Comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas Montrichardia linifera (Arruda) Schott e M. arborescens (l.) Schott em tipologias alagáveis contrastantes na Amazônia central |
| title_sort |
comparação ecofisiológica e de atributos de crescimento das herbáceas aquáticas montrichardia linifera (arruda) schott e m. arborescens (l.) schott em tipologias alagáveis contrastantes na amazônia central |
| publisher |
Instituto Nacional de Pesquisas da Amazônia - INPA |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/11915 http://lattes.cnpq.br/7978411226932418 |
| _version_ |
1787142062250917888 |
| score |
11.755432 |