scholarly journals COMPOSIÇÃO FLORÍSTICA E ESTRUTURA DE FLORESTA EM VÁRZEA ALTA ESTUARINA AMAZÔNICA

FLORESTA ◽  
2005 ◽  
Vol 35 (1) ◽  
Author(s):  
José Antonio Leite De Queiroz ◽  
Silas Mochiutti ◽  
Sebastião Do Amaral Machado ◽  
Franklin Galvão
Keyword(s):  
Species Diversity ◽  
Floristic Composition ◽  
Floodplain Forest ◽  
Sample Plot ◽  
Euterpe Oleracea ◽  
Amazon Estuary ◽  
Pentaclethra Macroloba ◽  
Absolute Dominance ◽  
Euterpe Oleracea Mart

O presente estudo foi desenvolvido objetivando avaliar a composição florística e a estrutura de floresta de várzea alta do estuário amazônico. Uma parcela amostral de 1,0 ha, dividida em subparcelas de 20 x 50 m, foi instalada no Bailique/AP, furo do Mazagão/AP e rio Maniva/PA, e medidos os indivíduos com DAP ≥ 5 cm. Foram identificados 69 espécies e 60 gêneros de 29 famílias, sendo que 21 espécies foram comuns aos três locais e 24 a apenas um dos três locais. As famílias mais abundantes foram: Arecaceae com 416 plantas/ha (50,4%), com a espécie Euterpe oleracea Mart., 207 plantas/ha (25,1%) e Astrocaryum murumuru Mart. 160 plantas/ha (19,4%); Caesalpiniaceae com 95 plantas/ha (11,5%) com a espécie Mora paraensis Ducke, 82 plantas/ha (9,9%) e família Mimosaceae com 83 plantas/ha (10,0%), com a espécie Pentaclethra macroloba (Willd.) Kuntze 56 plantas/ha (6,7%). Para dominância absoluta: 30,07; 34,18; e 36,56 m2/ha. Diversidade de espécies: 2,31; 2,67 e 2,84. Quociente de mistura: 1:18, 1:18 e 1:20 no Bailique, Mazagão e Maniva, respectivamente. Floristic composition and forest’s structure in Amazon estuarine high floodplain Abstract The present study was developed aiming to evaluate the floristic composition and the structure of high floodplain forest in the Amazon estuary. One sample plot of one hectare divided in sub-plots of 20 x 50 m, were installed in Bailique/AP, furo do Mazagão/AP and rio Maniva/PA, for measurement of all trees with DBH ≥ 5 cm. It was identified 69 species and 60 genera of 29 families, with 21 species common to the three areas and 24 only at one of the three areas. The families most abundant were: Arecaceae with 416 plants/ha (50,4%) with the specie Euterpe oleracea Mart. 207 plants/ha (25,1%) and Astrocaryum murumuru Mart. 160 plants/ha (19,4%), Caesalpiniaceae with 95 plants/ha (11,5%) with the specie Mora paraensis Ducke 82 plants/ha (9,9%), and Mimosaceae family with 83 plants/ha (10,0%), with Pentaclethra macroloba (Willd.) Kuntze 56 plants/ha (6,7%). Absolute dominance were: 30,07; 34,18; and 36,56 m2/ha. Species diversity: 2,31; 2,67 and 2,84. Mixture quotients: 1:18, 1:18 and 1:20 for Bailique, Mazagão and Maniva, respectively.

scholarly journals Forest restoration in the floodplains of the Amazon estuary subjected to intensive açaí management

2021 ◽  
Vol 24 ◽  
Author(s):  
Rosileia da Costa Carvalho ◽  
Lívia de Freitas Navegantes Alves ◽  
Renan do Vale Carneiro
Keyword(s):  
Natural Regeneration ◽  
Native Species ◽  
Forest Restoration ◽  
Floristic Composition ◽  
Floodplain Forest ◽  
Forest Recovery ◽  
Floodplain Forests ◽  
Structured Interviews ◽  
Ecosystem Conservation ◽  
Amazon Estuary

Abstract The expansion and intensification of açaí management in floodplain forests of the Amazonian estuary have resulted in changes in floristic composition and in biodiversity losses, causing problems to ecosystems and endangering livelihoods of riverine communities. These transformations have prompted the need for forest restoration. The objective of this study was to identify and analyze forest recovery initiatives carried out in floodplain forests previously subjected to intensive açaí management in the Amazonian estuary. Methods included structured interviews and questionnaires. Results reveled the following restoration types: 1) area enrichment: subtype 1 - high floodplain forest (7.89%) and subtype 2 - low floodplain forest (44.75%); 2) directing natural regeneration of native species (34.21%); 3) cultivation of native species (13.15%). Results suggest that forest restoration efforts can promote sustainable production of açaí, productive diversity, ecosystem conservation and generate income for riverine families.

The economic value of managing the açaí palm (Euterpe oleracea Mart.) in the floodplains of the Amazon estuary, Pará, Brazil

1996 ◽  
Vol 87 (1-3) ◽  
pp. 163-173 ◽  
Author(s):  
Nuria Muñiz-Miret ◽  
Robert Vamos ◽  
Mario Hiraoka ◽  
Florencia Montagnini ◽  
Robert O. Mendelsohn
Keyword(s):  
Economic Value ◽  
Euterpe Oleracea ◽  
Amazon Estuary ◽  
Euterpe Oleracea Mart

Preparation and Characterization of the Nutritive Value of Flour Made from Acai (Euterpe oleracea, Mart.) Seeds

2014 ◽  
Vol 4 (3) ◽  
pp. 224-228
Author(s):  
Elaine Lima ◽  
Edna Santos ◽  
Robert Smith ◽  
Armando Sabaa-Srur
Keyword(s):  
Nutritive Value ◽  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

Absorption and Biological Activity of Phytochemical-Rich Extracts from Açai (Euterpe oleracea Mart.) Pulp and Oil in Vitro

2008 ◽  
Vol 56 (10) ◽  
pp. 3593-3600 ◽  
Author(s):  
Lisbeth A. Pacheco-Palencia ◽  
Stephen T. Talcott ◽  
Stephen Safe ◽  
Susanne Mertens-Talcott
Keyword(s):  
Biological Activity ◽  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart

Effect of Euterpe oleracea Mart. (Açaí) Oil on Dyslipidemia Caused by Cocos nucifera L. Saturated Fat in Wistar Rats

2017 ◽  
Vol 20 (9) ◽  
pp. 830-837 ◽  
Author(s):  
Belmira S. Faria e Souza ◽  
Helison O. Carvalho ◽  
Talisson Taglialegna ◽  
Albenise Santana A. Barros ◽  
Edilson Leal da Cunha ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Cocos Nucifera ◽  
Saturated Fat ◽  
Euterpe Oleracea ◽  
Cocos Nucifera L ◽  
Euterpe Oleracea Mart

Phyllotaxis of the palm Euterpe oleracea Mart. at the level of the shoot apical meristem

Botany ◽  
2010 ◽  
Vol 88 (5) ◽  
pp. 528-536 ◽  
Author(s):  
Denis Barabé ◽  
Laura Bourque ◽  
Xiaofeng Yin ◽  
Christian Lacroix
Keyword(s):  
Shoot Apical Meristem ◽  
Fundamental Theorem ◽  
Apical Meristem ◽  
Leaf Primordia ◽  
Leaf Primordium ◽  
Divergence Angle ◽  
Euterpe Oleracea ◽  
The Mean ◽  
The Relationship ◽  
Euterpe Oleracea Mart

Previous studies on palm phyllotaxis deal mainly with the mature trunk. The goals of this study are (i) to determine the relationship between the number of parastichies, the divergence angle, and the plastochrone ratio at the level of the shoot apical meristem; (ii) to examine whether there are fluctuations in the divergence angle; (iii) to interpret the significance of phyllotactic parameters with respect to the mode of growth of the apex. The tubular base of the leaf primordium is more or less asymmetrical, and completely surrounds the shoot apical meristem. The phyllotactic system corresponds to a (2, 3) conspicuous parastichy pair. The mean divergence angle per apex varies between 126.9° ± 9.3° (mean ± SD) and 135. 8° ± 8.0°. Divergence angles for all apices fluctuate within a range of 115.89° to 157.33°. The mean plastochrone ratios between apices varies from 1.35 ± 0.18 to 1.58 ± 0.12. The plastochrone ratio at each plastochrone for all apices ranges from 1.09 to 2.00. There is no correlation between the angle of divergence and the plastochrone ratio. There is a fluctuation in the value of the divergence angle that falls within the range predicted by the fundamental theorem of phyllotaxis. The high value of the ratio of the diameter of leaf primordia over the diameter of the apex, and the long plastochrone might explain the lack of correlation between certain phyllotactic parameters.

scholarly journals Proposta conceitual de colhedoras autopropelidas de açaí (Euterpe oleracea Mart.) para a região amazônica

2012 ◽  
Vol 43 (2) ◽  
pp. 382-389 ◽  
Author(s):  
Daniel Albiero ◽  
Antonio José da Silva Maciel ◽  
Renildo Luiz Mion ◽  
Carlos Alberto Viliotti ◽  
Carlos Antonio Gamero
Keyword(s):  
Euterpe Oleracea ◽  
Euterpe Oleracea Mart
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