Sampling effort and the drivers of plant species richness in the Brazilian coastal regions

Oliveira, Eduardo Vinícius da Silva; Alves, Davi Mello Cunha Crescente; Landim, Myrna Friederichs; Gouveia, Sidney F.

doi:10.1007/s00442-020-04805-7

Cited by 8 publications

(3 citation statements)

References 51 publications

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“…Our results depict a slight constraint of water availability on taxonomic and phylogenetic beta diversity, but not functional beta diversity (see also Massante & Gerhold, 2020;Oliveira et al, 2021).…”

Section: Discussionmentioning

confidence: 67%

“…Also, the limiting environmental conditions of the Restinga suggest that only lineages with specific traits can be established therein (Lins et al., 2021; Lourenço et al., 2021), suggesting the occurrence of phylogenetic and functional nestedness. In fact, water constraints and low fertility in soils were found to limit the number of species (Lins et al., 2021; Oliveira et al., 2021; Scarano, 2002) and favour the occurrence of phylogenetically and functionally related species (Lourenço et al., 2021; Massante & Gerhold, 2020; Vitória et al., 2019). Thus, differences in taxonomic, phylogenetic, and functional composition, whether due to turnover or nestedness, should result from variations in water availability and soil properties (Luzuriaga et al., 2012; Menezes et al., 2020) rather than from random processes such as dispersal limitation (i.e., immigration rates), environmental stochasticity, and ecological drift (Hubbell, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Multiple aspects of tree beta diversity in coastal ecosystems in Brazil

da Silva Oliveira,

Landim,

Gouveia

2024

Journal of Biogeography

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AimPatterns of beta diversity reflect the formation dynamics of ecological communities. Here, we integrated geographic, phylogenetic, and phenotypic information of coastal woody vegetation to investigate (1) whether the observed dissimilarity between assemblages differs from that expected by chance, examining the roles of spatial and deterministic processes; (2) the relative contribution of beta‐diversity components (turnover and nestedness) for taxonomic, phylogenetic, and functional beta diversity; and (3) what environmental factors drive the differences in composition between assemblages for all these dimensions.LocationBrazil.TaxonAngiosperm trees.MethodsWe built dissimilarity matrices and partitioned the taxonomic, phylogenetic, and functional beta diversity from an incidence matrix, a phylogeny including the region's plants, and a matrix expressing functional distances. Using linear regressions, we tested the effects of different environmental predictors representative of the effects of water availability, thermal energy, habitat heterogeneity, edaphic constraints, climatic stability, and human influence on beta‐diversity patterns.ResultsTaxonomic, phylogenetic, and functional dissimilarities exhibited a typical pattern of greater dissimilarity with distance (i.e., as expected by chance). However, these patterns showed different contributions of beta‐diversity components, predominating turnover in taxonomic and phylogenetic dissimilarity, and nestedness in functional dissimilarity. Water availability had a slight effect on patterns of taxonomic and phylogenetic dissimilarities.Main conclusionsThe Brazilian coastal woody vegetation appears to have emerged through a dynamic of colonisation of evolutionarily distinct but functionally similar lineages that originated from adjacent phytogeographic domains, proportional to their diversity. This is consistent with a combination of both neutral and non‐neutral processes. Our findings underscore the complementary roles of different dimensions of beta diversity in explaining the dynamics of these vegetation communities.

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Section: Discussionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Multiple aspects of tree beta diversity in coastal ecosystems in Brazil

da Silva Oliveira,

Landim,

Gouveia

2024

Journal of Biogeography

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“…Through the last decade, several countries assumed the challenge of documenting their floras as a national priority, as was the case with Brazil ( BFG (The Brazilian Flora Group), 2018 ; BFG (The Brazilian Flora Group), 2022 ), incorporating hundreds of botanists from the region to achieve this goal. Nevertheless, several countries still lack a national catalogue and sampling efforts are still scarce even in most populated areas ( Oliveira et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

South America holds the greatest diversity of native daisies (Asteraceae) in the world: an updated catalogue supporting continental-scale conservation

Moreira-Muñoz,

Monge,

Grossi

et al. 2024

Front. Plant Sci.

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Asteraceae is the world’s richest plant family and is found on all continents, in environments ranging from the coast to the highest mountains. The family shows all growth forms and, as in other angiosperm families, species richness is concentrated in tropical regions. South America has the highest diversity of Asteraceae in the world, yet taxonomic and distributional knowledge gaps remain. This study compiles an updated catalog of Asteraceae native to South America, based on national and regional checklists and ongoing large-scale flora projects. The resulting checklist includes a total of 6,940 species and 564 genera native to South America to date, which represent about a quarter of the family’s global diversity. Countries already considered to be megadiverse show the greatest diversity, such as Brazil with 2,095 species, followed by Peru (1,588), Argentina (1,377), and Colombia (1,244), with this diversity mainly focused on the Brazilian Highlands and the Andes. Species endemism also peaks in Brazil, but Sørensen distances reveal the Chilean flora to be eminently different from the rest of the continent. Tribes better represented in the continent are Eupatorieae, Senecioneae and Astereae, also with a remarkably presence of entirely South American subfamilies representing earliest diverging lineages of the Asteraceae, such as Barnadesioideae, Wunderlichioideae, Famatinanthoideae, and Stifftioideae. It is estimated that the discovery and description curves have not yet stabilized, and the number of species is likely to increase by 5 to 10% in the coming years, posing major challenges to continental-scale conservation.

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