scholarly journals Floristic composition and topographic variation in a tidal floodplain forest in the Amazon Estuary

2002 ◽  
Vol 25 (4) ◽  
pp. 419-430 ◽  
Author(s):  
JOSÉ H. CATTANIO ◽  
ANTHONY B. ANDERSON ◽  
MANOEL S. CARVALHO
Keyword(s):  
Floristic Composition ◽  
Floodplain Forest ◽  
Amazon Estuary ◽  
Topographic Variation

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.

scholarly journals Phenology of the multi-use tree species Carapa guianensis in a floodplain forest of the Amazon Estuary

2016 ◽  
Vol 30 (4) ◽  
pp. 618-627 ◽  
Author(s):  
Adelson R. Dantas ◽  
◽  
Ana C. Lira-Guedes ◽  
Karen Mustin ◽  
Wegliane C. S. Aparício ◽  
...  
Keyword(s):  
Tree Species ◽  
Floodplain Forest ◽  
Carapa Guianensis ◽  
Amazon Estuary

scholarly journals EDAPHIC AND CLIMATIC RELATION AND ITS INFLUENCE ON THE COMPOSITION FLORISTIC LOWER STRATUM IN A FLOODPLAIN FOREST, PARÁ, BRAZIL

2016 ◽  
Vol 40 (5) ◽  
pp. 901-910
Author(s):  
Elayne Oliveira Braga ◽  
Mário Augusto Gonçalves Jardim
Keyword(s):  
Floristic Composition ◽  
Fine Sand ◽  
Climatic Conditions ◽  
Floodplain Forest ◽  
Rainy Period ◽  
Lower Stratum ◽  
Soil Variables ◽  
Physico Chemical ◽  
Environmental Protection Area ◽  
Protection Area

ABSTRACT This work evaluated the soil and climate influence in the floristic composition of the lower stratum in a floodplain forest in the environmental protection area of Combu Island, in Belém, Pará. From February to April (high rainy period) and from May to July (less rainy period), all individuals with height ≤ 1 m were sampled and identified in four plots of 20 x 20 m divided into subplots of 1 m2. A sample of soil per plot was collected at the depth of 20 cm in the months of April and July. The relationship between floristic with edaphic and climatic conditions was evaluated by a canonical correspondence analysis (CCA). The floristic composition between the two studied periods was similar. Differently, the physico-chemical soil composition showed variation between the two periods. The CCA indicated a significant correlation between the distribution of species and edaphic factors, although most species were not influenced by soil variables, in particular the most abundant ones. Some species showed a relationship with In and fine sand, indicating the existence of preferential sites for some species.

scholarly journals Phenology, litterfall, growth, and root biomass in a tidal floodplain forest in the Amazon estuary

2004 ◽  
Vol 27 (4) ◽  
Author(s):  
José H. Cattanio ◽  
Anthony B. Anderson ◽  
John S. Rombold ◽  
Daniel C. Nepstad
Keyword(s):  
Root Biomass ◽  
Floodplain Forest ◽  
Amazon Estuary

Thirty years after Balbina Dam: Diversity and floristic composition of the downstream floodplain forest, Central Amazon, Brazil

Ecohydrology ◽  
2019 ◽  
Vol 12 (8) ◽  
Author(s):  
Maíra Rocha ◽  
Rafael Leandro Assis ◽  
Maria Teresa Fernandez Piedade ◽  
Yuri Oliveira Feitosa ◽  
John Ethan Householder ◽  
...  
Keyword(s):  
Floristic Composition ◽  
Floodplain Forest ◽  
Central Amazon

Syntaxonomy of mid-successional stages of secondary forests of the central elevated part of the Southern Urals

2012 ◽  
pp. 109-134
Author(s):  
P. S. Shirokikh ◽  
A. M. Kunafin ◽  
V. B. Martynenko
Keyword(s):  
Boreal Forests ◽  
Floristic Composition ◽  
Southern Urals ◽  
Secondary Forests ◽  
Natural Forests ◽  
The Southern Urals ◽  
Active Growth ◽  
Tree Layer ◽  
Shade Tolerant Species ◽  
Successional Stages

The secondary birch and aspen forests of middle stages of succession of the central elevated part of the Southern Urals are studied. 4 subassociations, 1 community, and 7 variants in the alliances of Aconito-Piceion and Piceion excelsae are allocated. It is shown that the floristic composition of aspen and birch secondary forests in the age of 60—80 years is almost identical to the natural forests. However, a slight increase the coenotical role of light-requiring species of grasslands and hemiboreal forests in the secondary communities of the class Brachypodio-Betuletea was noticed as well as some reduction of role the shade-tolerant species of nemoral complex and species of boreal forests of the class Vaccinio-Piceetea. Dominant tree layer under the canopy of secondary series is marked by an active growth of natural tree species.

Reed (Phragmites australis agg.) dominated plant communities in the Lower Volga Valley

2015 ◽  
pp. 26-37
Author(s):  
V. B. Golub ◽  
V. V. Bondareva ◽  
A. N. Sorokin ◽  
L. F. Nikolaychuk
Keyword(s):  
Expert System ◽  
Phragmites Australis ◽  
Plant Communities ◽  
Floristic Composition ◽  
Original Data ◽  
Optimal Level ◽  
Point Of View ◽  
Original Structure ◽  
Volga River ◽  
Lower Volga

Plant communities with reed domination (Phragmites australis agg.) occupy the large areas in the Lower Volga Valley and especially in the river delta. We have set the task to reveal the diversity of these communities in the Lower Volga Valley. For this purpose, we applied the database that is registered in the Global Index of Vegetation-Plot Databases (GIVD) under the EU-RU–002 index (http://www.givd.info/) and includes 14871 relevés made during the period from 1924 to 2013. Communities with the dominance of reed were defined as such, if the coverage of this plant was more than 50 %. We have found 375 such relevés in the database. At first, one basal community, 3 associations and 3 subassociations with domination of Phragmites australis agg. were distinguished in the Lower Volga Valley. All processing and analysis of relevés were performed using the software package JUICE 7.0. (Tichý, 2002). The «Cocktail» method was applied to establish the sociological groups that indicate environmental conditions (Bruelheide, 2000). The expert system for selection from the database of relevés by means of these groups was created. It is allowed us to ascribe relevés to earlier distinguished associations, subassociations and basal community. 171 relevés have been identified by the expert system and they were assigned to association, subassociation or the basal community. 204 relevés were not referred to any association, subassociation or the basal community. We wanted to answer the question: are there among these 204 relevés, which could be interpreted as the new syntaxa, giving them the proper ecological characteristics? For this purpose, the cluster analysis of 204 relevés has been carried out. The optimal level of clustering was determined by calculating the index of “crispness of classification” (Botta-Dukát et al., 2005). The greatest “crispness of classification” was reached at allocation of 13 clusters. Consideration of the floristic composition of allocated groups had shown that 11 of them were the transitional plant communities among the earlier established syntaxa. Only two clusters were differed in rather original structure that we could explain by the influence of environment factors. We have identified them as new associations Rubio tataricae-Phragmitetum australis and Cynancho acuti-Phragmitetum australis. All associations with the dominance of Phragmites australis agg. distinguished in the Lower Volga Valley were included in the alliance Phragmition communis Koch 1926, order Phragmitetalia communis Koch 1926. In literary sources from the ecological point of view these syntaxa are defined as the wetland communities, which are closely linked to water bodies (Šumberová et al., 2011; Ermakov, 2012). However, in many cases this definition does not correspond to the ecology of plant communities with the dominance of reed in the lower reaches of the Volga River. Ecotops of these communities are flooded for up to 2–3 months in a year and then they dry out. In the autumn, the ground water level can drop to a depth of one meter (Golub et al., 2011). The plant satellites of the reed here are often mesophytic plants such as Rubus caesius, Calamagrostis epigeios, Phalaris arundinacea, Rubia tatarica, Althaea officinalis, and Rumex stenophyllus. Therefore, the inclusion of phytocoenosises with domination of the reed in the lower reaches of the Volga River in the alliance Phragmition communis is rather relative. A correct placement of these plant communities in the system of vegetation syntaxa of the arid areas can be made only if it is based on original data obtained from much bigger territory than the Lower Volga Valley. In future geobotanical studies, it is desirable to divide the aggregation of Phragmites australis agg. into smaller species taxa.

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