Diversidades filogenética e funcional: novas abordagens para a Ecologia de comunidades

Cianciaruso, Marcus V.; Silva, Igor Aurélio; Batalha, Marco Antônio

doi:10.1590/s1676-06032009000300008

Cited by 91 publications

(66 citation statements)

References 109 publications

(181 reference statements)

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“…However, few studies evaluated the responses of other habitat-related functional groups such as nesting habits and forest dependency. Moreover, the recovery of taxonomic diversity does not necessarily imply in the recovery of important ecosystem functions, since taxonomic indicators consider all species as equivalent despite their differences in ecological traits [36]. The assessment of functional diversity and recovery of functional groups is fundamental to evaluate ecosystem restoration, since they provide direct links to ecosystem processes [29,37].…”

Section: Introductionmentioning

confidence: 99%

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

2018

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Abstract:Monitoring wildlife responses is essential to assess restoration projects. Birds are widely used as bioindicators of ecosystem restoration, but most studies use only taxonomic descriptors to compare categories of reference and restoring sites. Here, we used forest structure as a continuous predictor variable to evaluate avifaunal taxonomic and functional indicators in riparian forest reference and restoration sites on southeastern Brazil. Reference sites were riparian forest remnants, and restoration sites were pasture before seedling reintroduction. Forest structure variables (mean tree height, canopy depth, mean diameter at breast height, basal area, tree layering, tree density, and grass cover) were reduced into two axes using a Principal Component Analysis (PCA), Forest Axis 1 (tree biomass vs. grass cover) and Forest Axis 2 (canopy depth vs. tree density). Bird species were classified in relation to five functional categories (i.e., diet, foraging stratum, nest height, cavity dependence for nesting, and forest dependence). Forest Axis 1 influenced the functional diversity of bird assemblages and the relative abundance within levels of each functional category (except for nest height). The relative abundance of all functional categories combined was also affected by Forest Axis 2. Therefore, forest structure affected the predominant functional traits of bird species in riparian sites under restoration. Sites with higher tree biomass were the richest, with canopy birds that were insectivores and frugivores of high forest dependence, whereas more open sites were associated with birds of low forest dependence and ground-foraging insectivores. Forest structures of similar-aged sites were strongly variable, due to natural and anthropic disturbances, so restoration age was a poor indicator of forest development. These unpredictable disturbances can change the development of sites under restoration, so that forest structure can be a better descriptor of the trajectory of these ecosystems.

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Section: Introductionmentioning

confidence: 99%

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

2018

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“…Under this assumption, environmental filters cause phylogenetic clustering, promoting the co-existence of closely related species within communities (Webb et al 2002;Hardy 2008;Cianciaruso et al 2009;Silva et al 2011), while competition and further density dependent factors cause phylogenetic overdispersion (Harms et al 2001; Acta bot. bras.…”

Section: Introductionmentioning

confidence: 99%

Environmental severity promotes phylogenetic clustering in campo rupestre vegetation

2015

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The stress-dominance hypothesis postulates that the importance of competition in plant communities declines with increasing environmental stress while the importance of environmental filters increases. To test this hypothesis for campo rupestre vegetation, we analyzed phylogenetic diversity and community structure of angiosperm communities at two study sites within the Itacolomi State Park, Minas Gerais, Brazil. Plots representing more favorable habitats, such as those with a higher percentage of rocky outcrops that might permit the tapping of deeper water and nutrient resources as well as higher contents of clay and loam thereby increasing water and nutrient availability, show higher phylogenetic diversity and therefore lower phylogenetic clustering than plots with more sever habitats. This observation is consistent with the stress-dominance hypothesis if we assume ecological niches to be conserved within evolutionary niches. However, more comprehensive studies including tests for phylogenetic signal of ecological niches are necessary before generalizations for larger regions may be carried out.

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“…A conexão das lagoas abertas com o rio permite que espécies se dispersem para ambientes antes isolados, favorecendo uma homogeneização das comunidades de lagoas influenciadas pelo pulso de inundação, evento que não ocorre nas lagoas isoladas (Bleich et al, 2009). Tradicionalmente, as medidas de diversidade (e.g., número de espécies e suas contribuições relativas), são estimativas pouco preditivas sobre as mudanças na estrutura e no funcionamento de comunidades de um determinado local (Cianciaruso et al, 2009). Nesse sentido, avaliamos e comparamos as abordagens funcional e taxonômica na estruturação de comunidades de macrófitas aquáticas ocorrentes em lagoas abertas e fechadas de uma planície de inundação neotropical.…”

Section: Materiais E Métodos O Rio Mourão Situa-se No Terceirounclassified

1º Simpósio de História Natural do Terceiro Planalto Paranaense 05 de outubro a 18 de dezembro de 2015, Maringá (PR)

Vidotti

2016

arqmudi

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INTRODUÇÃOJuncaceae está representada, no Brasil, por 2 gêneros: Juncus (com 21 espécies) e Luzula (monoespecífico), sempre relacionadas aos ambientes temperados ou a regioes montanhosas de todo o mundo.Alves e Luz (2015) destacam a ocorrência de 21 espécies do gênero Juncus no Brasil, estando distribuídos nas regiões nordeste, centro-oeste, sudeste e sul. Segundo os autores, Juncus conglomeratus L., está citado apenas para o estado do Rio Grande do Sul, mas com possível ocorrência nos campos limpos de Santa Catarina, região Sul do Brasil. Tal espécie caracteriza-se pela floração escaposa, contando com inflorescência lateralmente posicionada no ramo, cuja bráctea apresenta-se prolongada (Richards; Clapham, 1941).Pautando-se em tais delineamentos, o presente trabalho tem por objetivo apresentar a primeira ocorrência de J. conglomeratus para o estado do Paraná.

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Diversidades filogenética e funcional: novas abordagens para a Ecologia de comunidades

Cited by 91 publications

References 109 publications

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

Environmental severity promotes phylogenetic clustering in campo rupestre vegetation

1º Simpósio de História Natural do Terceiro Planalto Paranaense 05 de outubro a 18 de dezembro de 2015, Maringá (PR)

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