scholarly journals Plant species richness in riparian forests: Comparison to other forest ecosystems, longitudinal patterns, role of rare species and topographic factors

2021 ◽  
Vol 496 ◽  
pp. 119400
Author(s):  
Remigiusz Pielech
2004 ◽  
Vol 5 (1) ◽  
pp. 45-54 ◽  
Author(s):  
R. Ohlemüller ◽  
P. Bannister ◽  
K.J.M. Dickinson ◽  
S. Walker ◽  
B.J. Anderson ◽  
...  

2014 ◽  
Vol 15 (1) ◽  
pp. 37-43 ◽  
Author(s):  
D. Rocchini ◽  
L. Dadalt ◽  
L. Delucchi ◽  
M. Neteler ◽  
M.W. Palmer

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Romina Daiana Fernández ◽  
Sergio Javier Ceballos ◽  
Ana Lucía González Achem ◽  
Margarita del Valle Hidalgo ◽  
Hugo Rafael Fernández

The aims of this work were to describe the conservation status of riparian forests located in a mountain subtropical basin of Tucumán province, Argentina, and assess how the quality of riparian forests is related with altitude, plant species richness, proportion of exotic species, and Total Suspended Solids (TSS) in adjacent rivers. Composition and species richness of riparian forests were studied at 16 sites located along an altitudinal gradient and TSS was determined from water samples collected in each site. In order to evaluate conservation status of riparian forests, we calculated an index of Quality of Yungas Riparian Forests (QBRy). We recorded 90 plant species at all sites, from which 77% were native. QBRy index was mainly associated with altitude and varied from riparian forests with good preservation or slightly disturbed to those with extreme degradation. At lower altitude, forests were more disturbed, more invaded by exotic plant species, and closer to urban and cropped areas. QBRy was not correlated with species richness or TSS. Like other riparian forests of Argentina, plant species invasion increased their degradation; therefore, future studies should focus on native riparian forests conservation and on the management of invasive plant species, which affect their quality.


2020 ◽  
pp. 1-14
Author(s):  
Maiara B. Ramos ◽  
Fabricio C. Diniz ◽  
Humberto A. de Almeida ◽  
Gilbevan R. de Almeida ◽  
Anderson S. Pinto ◽  
...  

Abstract Unlike well-known global patterns of plant species richness along altitudinal gradients, in the mountainous areas of the Brazilian Caatinga, species richness and diversity reach their maxima near mountain tops. The causes of this unusual pattern are not well understood, and in particular the role of edaphic factors on plant community assembly along these gradients has not been investigated. Our goal was to assess the role of edaphic factors (fertility and soil texture) on plant community composition and structure on two mountains of the Brazilian semi-arid region. In 71 plots (Bodocongó site, twenty-one 200-m2 plots, 401–680 m asl; Arara site, fifty 100-m2 plots, 487–660 m asl) we recorded 3114 individuals representing 61 plant species; in addition, at each plot we collected composite soil samples from 0–20 cm depth. Significant altitude-related changes were observed both for community structure and composition, and edaphic variables. A canonical correspondence analysis allowed the distinction of two groups of plots according to species abundances, indicating a preferential habitat distribution of species depending both on altitude and soil variables. Although soil fertility was lowest at the highest altitudes, these areas had high richness and diversity. Conversely, the more fertile foothills were characterized by the dominance of generalist pioneer species. Despite the relatively short altitudinal range that characterizes the studied mountains, this study elucidates the role of edaphic factors on the floristic composition and species richness patterns on the mountains of the Brazilian semi-arid region.


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