Tree species distribution inVárzea forests of Brazilian Amazonia

Parolin, Pia; Ferreira, Leandro Valle; Albernaz, Ana Luisa; Almeida, Samuel

doi:10.1007/bf02803209

Cited by 84 publications

(32 citation statements)

References 43 publications

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“…The four families who have excelled in number of species in the two periods were well represented in other surveys which investigated the floristic composition in floodplain forest (ALMEIDA et al, 2004;JARDIM, 2011;JARDIM, 2013), evidencing the constant frequency of Fabaceae (WITTMANN et al, 2006;LUIZE et al, 2015). The Shannon index values for the high rainy period (2.60) and less rainy period (2.53) were similar and can be considered low, but it is a pattern frequently observed in estuarine lowlands (SANTOS; JARDIM, 2006).…”

Section: Discussionsupporting

confidence: 55%

“…The low diversity is a reflection of the limiting conditions imposed by the daily and periodic floods that alter the dynamics of nutrients from the soil, hindering the establishment of plants (PAROLIN et al, 2004;SILVA et al, 2015). The large number of species shared among the high and less rainy periods justifies lower dissimilarity between the periods observed floristic.…”

Section: Discussionmentioning

confidence: 99%

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Edaphic and Climatic Relation and Its Influence on the Composition Floristic Lower Stratum in a Floodplain Forest, Pará, Brazil

Braga

Jardim

2016

Rev. Árvore

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-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. RESUMO -Este trabalho avaliou a relação edafo-climática e sua influência sob a composição florística do estrato inferior em uma floresta ombrófila densa aluvial localizada na Área de Proteção Ambiental, Ilha do Combu, Belém, Pará. De fevereiro a abril (período mais chuvoso) e de maio a julho (período menos chuvoso) foram amostrados e identificados todos os indivíduos com altura < 1 m em quatro parcelas de 20 x 20 m divididas em subparcelas de 1m². Foi coletada uma amostra composta de solo por parcela na profundidade de 20 cm nos meses de abril e julho. Para relacionar a florística com as condições edafoclimáticas foi realizada uma análise de correspondência canônica (CCA). A composição florística dos períodos foi similar. A composição físico-química do solo apresentou variação entre os períodos. A CCA indicou correlação significativa entre a distribuição das espécies e os fatores edáficos, no entanto, a maioria das espécies não foi influenciada pelas variáveis do solo, em especial as mais abundantes. Algumas espécies apresentaram relação com o Na e areia fina, indicando a existência de sítios preferenciais para algumas espécies.Palavras-chave: Período chuvoso e menos chuvoso; Composição físico-química; Espécies generalistas.

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Edaphic and Climatic Relation and Its Influence on the Composition Floristic Lower Stratum in a Floodplain Forest, Pará, Brazil

Braga

Jardim

2016

Rev. Árvore

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“…In addition, flood-tolerance may 106! present an important competitive advantage (Joly and Crawford, 1982;Parolin et al, 2004), with 107! adapted species becoming very abundant.…”

Section: !mentioning

confidence: 99%

Post-fire dynamics of woody vegetation in seasonally flooded forests (impucas) in the Cerrado-Amazonian Forest transition zone

Maracahipes

Marimon

Lenza

et al. 2014

Flora - Morphology, Distribution, Functional Ecology of Plants

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30!Fire disturbance alters the structural complexity of forests, above-ground biomass stocks and 31! patterns of growth, recruitment and mortality that determine community temporal dynamics. 32!These changes may alter forest species composition, richness, and diversity. We compared impucas are embedded in a fire-adapted savanna landscape, the impucas vegetation appears to be 44! sensitive to fire, with burned areas having higher mortality and turnover than unburned areas. 45!This indicates that these forest islands are potentially at risk under increasing regional fire 46!frequency.

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“…While a decline in tree species richness with increasing flooding height and duration seems to be typical for many Amazonian floodplain forests (Terborgh and Andresen 1998;Nebel et al 2001aNebel et al , 2001bParolin et al 2004), we found only a very slight (non-significant) increase in plot-level species numbers from the AF to the NAF plots (Kurzatkowski et al 2015). The missing diversity gradient in the Araguaia floodplain may again be a consequence of the low nutrient concentration of the clear waters and the action of drought in this region.…”

Section: Stand Dynamics (Recruitment and Mortality)mentioning

confidence: 40%

“…Many ecological processes in these unique semi-aquatic woodlands, such as nutrient cycling, decomposition and forest succession, are heavily influenced by the flood pulse, and plant species inhabiting these environments have developed specific morpho-anatomical and physiological adaptations to cope with the seasonal flooding (Junk 1989;Parolin et al 2004). The variable flooding regimes and differences in water and sediment chemistry determine tree species composition and forest dynamics in these systems (Junk 1989;Rosales et al 1999;Junk et al 2010;Wittmann et al 2010;Junk et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Stand dynamics of the drought-affected floodplain forests of Araguaia River, Brazilian Amazon

2017

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Background: The floodplain forests of Araguaia River, a clear-water river in the southeastern Amazon (Tocantins State, Brazil), are characterized by seasonal flooding up to 3.5 m height, low nutrient levels in the water, and seasonal drought periods of 4-5 months. Methods: We studied the forest dynamics (tree diameter growth, tree mortality and recruitment) of this unique forest ecosystem over a 5-year period by repeated censuses in 12 permanent plots established along a flooding gradient. Results: The cumulative basal area in the plots increased by 0.84 (±0.45) m

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Tree species distribution inVárzea forests of Brazilian Amazonia

Cited by 84 publications

References 43 publications

Edaphic and Climatic Relation and Its Influence on the Composition Floristic Lower Stratum in a Floodplain Forest, Pará, Brazil

Edaphic and Climatic Relation and Its Influence on the Composition Floristic Lower Stratum in a Floodplain Forest, Pará, Brazil

Post-fire dynamics of woody vegetation in seasonally flooded forests (impucas) in the Cerrado-Amazonian Forest transition zone

Stand dynamics of the drought-affected floodplain forests of Araguaia River, Brazilian Amazon

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