NDLI: Relationships between tree component structure, topography and soils of a riverside forest, Rio Botucaraí, Southern Brazil

Content Provider	Springer Nature Link
Author	Budke, Jean Carlos Jarenkow, João André Oliveira Filho, Ary Teixeira de
Copyright Year	2006
Abstract	The relationships among floristic, structural and physiognomic variables of the tree component, flooding regime variations and soil fertility were investigated in a riparian forest fragment (ca. 43 ha) in the Rio Botucaraí watershed near the confluence with the Rio Jacuí, southern Brazil. All the trees with a dbh ≥ 15 cm were surveyed in 100 contiguous 10 × 10 m plots and soil chemical and textural variables were obtained from the analyses of 15 topsoil samples (0–20 cm depth) collected at different locations. The sample sites encompass all the topographic variation of the area. We used canonical correspondence analysis (CCA) to seek correlations between environmental variables and tree component distribution. The 1,547 surveyed individuals belonged to 30 species and 16 botanical families. The Shannon diversity index (H′) and the Pielou equability (J′) were 1.995 and 0.586 nats ind.$^{−1}$, respectively. Sebastiania commersoniana, Casearia sylvestris, Eugenia uniflora and Eugenia hyemalis presented the highest importance values. Species’ densities chiefly correlated with site elevation, flooding regime and soil chemical fertility. The analyses of ecological categories (EC) revealed that most species are heliophylous and typical of early successional stages. Richness and diversity (P < 0.001) variations from different topographic positions reflect that at the local scale, flooding was a limiting factor for the establishment of certain species suggesting that local processes control species richness and diversity.
Starting Page	187
Ending Page	200
Page Count	14
File Format	PDF
ISSN	13850237
Journal	Plant Ecology
Volume Number	189
Issue Number	2
e-ISSN	15735052
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-07-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Canonical correspondence analysis Flooding Phytogeography Riverine forest Vegetation survey Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science

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