A Phytogeographical Metaanalysis of the Semiarid Caatinga Domain in Brazil

Moro, Marcelo Freire; Lughadha, Eimear Nic; Araújo, Francisca Soares de; Martins, Fernando Roberto

doi:10.1007/s12229-016-9164-z

Cited by 202 publications

(199 citation statements)

References 93 publications

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“…However, the apparent increasing importance of chamaephytes with decreasing rainfall, and the opposite for phanerophytes, is interesting. Further investigation of this result is needed, and should incorporate a greater number of samples and encompass a greater extent of the gradients in semiarid regions, including Caatingas that exist in different geological parts of the semiarid region (see Moro et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…(Alves 2009;Moro et al 2016). Th roughout most of its extent the annual rainfall is equal to or less than 1000 mm (AESA 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, this precipitation is heterogeneously distributed as a result of two large moisture gradients, one in the north-south direction determined by decreasing precipitation, and the other in the east-west direction due to the eff ect of increasing continentality (Rodal et al 2008). Th e most common soil of the region is of crystalline origin, but areas of sedimentary soil are also present (Moro et al 2015;Moro et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Th e hyperxerophytic vegetation of the Caatinga grows in crystalline soil and is predominant in this phytogeographical region (Moro et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil

2016

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Th is study examines the variation in cacti species richness and abundance among sites with diff erent average rainfall and soil types. We assessed a total of 3,660 individuals of six species of Cactaceae: Cereus jamacaru, Melocactus zehntneri, Pilosocereus gounellei, Pilosocereus pachycladus, Tacinga inamoena, and Tacinga palmadora. Th e greatest species richness and abundance of cacti were at locations with low rainfall and more clayey soils. Th e species studied diff ered in multidimensional representation, with some species being more positively related to soils with a higher proportion of fi ne particles (M. zehntneri and P. gounellei), while others were negatively related to soils with a higher proportion of coarser particles (T. inamoena) or positively related to areas with higher rainfall and vegetation cover (C. jamacaru and P. pachycladus). Th e diff erential responses of the species of Cactaceae studied in relation to the gradients analyzed demonstrates the need for more research into the relationship between cacti and environmental variables in semiarid ecosystems with high environmental heterogeneity.

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Section: Discussionmentioning

confidence: 99%

“…(Alves 2009;Moro et al 2016). Th roughout most of its extent the annual rainfall is equal to or less than 1000 mm (AESA 2014).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Th e hyperxerophytic vegetation of the Caatinga grows in crystalline soil and is predominant in this phytogeographical region (Moro et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil

2016

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“…It is composed of arboreal, shrub and herbaceous xerophytic vegetation, usually deciduous and with thorns. It has a wide range of physiognomies and high diversity of species, including cacti and bromeliads (Queiroz, 2009;Costa et al, 2014;Moro et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi in soils of arboreal Caatinga submitted to forest management

Pereira

Barreto-Garcia

Scoriza

et al. 2018

Agraria

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ABSTRACT:The arbuscular mycorrhizal fungi (AMF) community presents a variable tolerance to changes in the medium, to which it responds modifying the number of propagules. For this reason, the study of the effect of different management practices on this community can help to understand the magnitude of the changes caused to the ecosystem. The objective of this study was to evaluate changes in the community of arbuscular mycorrhizal fungi in the soil in an area of arboreal Caatinga submitted to forest management. The study was conducted in Contendas do Sincorá (BA). Three types of forest management (clear-cutting, selective logging based on diameter, and selective logging based on species) and one control area were evaluated. Soil samples were collected at 0-10 cm depth in two periods (five and 10 months after management). AMF spores were present in low density (< 1 spore g -1 soil), dry and non-viable, and were generally more abundant in managed areas. Fewer species were observed in the control area. The AMF community showed to be related to the attributes of the soil and sensitive to management practices, demonstrating greater impact under clear cut management.Key words: AMF community; spore diversity; indicator of sustainability Fungos micorrízicos arbusculares em solo sob Caatinga arbórea submetida a manejo florestal RESUMO: A comunidade de fungos micorrízicos arbusculares (FMA) apresenta diferentes tolerâncias a alterações no meio, respondendo a estas mudanças com modificações no seu número de propágulos. Por essa razão, o estudo do efeito de diferentes práticas de manejo sobre esta comunidade pode auxiliar no entendimento da magnitude das alterações ocasionadas no ecossistema. O objetivo deste estudo foi avaliar mudanças na comunidade de fungos micorrízicos arbusculares do solo em área de Caatinga arbórea submetida a manejo florestal. O estudo foi realizado em Contendas do Sincorá (BA). Foram avaliados três tipos de manejo florestal (corte raso, corte seletivo por diâmetro e corte seletivo por espécie) e uma área testemunha. As amostras de solo foram coletadas na profundidade de 0-10 cm, em dois períodos (cinco e 10 meses após a execução do manejo). Os esporos de FMA apresentaram-se em baixa densidade (< 1 esporo g -1 de solo), secos e inviáveis e, geralmente, em maior quantidade nas áreas manejadas. Menor número de espécies foi observado na testemunha. A comunidade de FMA mostrou-se relacionada aos atributos do solo e sensível as práticas de manejo, demonstrando maior impacto do manejo corte raso.

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Plant functional types broadly describe water use strategies in the Caatinga, a seasonally dry tropical forest in northeast Brazil

Wright

Lima

Souza

et al. 2021

Ecology and Evolution

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In seasonally dry tropical forests, plant functional type can be classified as deciduous low wood density, deciduous high wood density, or evergreen high wood density species. While deciduousness is often associated with drought‐avoidance and low wood density is often associated with tissue water storage, the degree to which these functional types may correspond to diverging and unique water use strategies has not been extensively tested. We examined (a) tolerance to water stress, measured by predawn and mid‐day leaf water potential; (b) water use efficiency, measured via foliar δ13C; and (c) access to soil water, measured via stem water δ18O. We found that deciduous low wood density species maintain high leaf water potential and low water use efficiency. Deciduous high wood density species have lower leaf water potential and variable water use efficiency. Both groups rely on shallow soil water. Evergreen high wood density species have low leaf water potential, higher water use efficiency, and access alternative water sources. These findings indicate that deciduous low wood density species are drought avoiders, with a specialized strategy for storing root and stem water. Deciduous high wood density species are moderately drought tolerant, and evergreen high wood density species are the most drought tolerant group. Synthesis. Our results broadly support the plant functional type framework as a way to understand water use strategies, but also highlight species‐level differences.

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A Phytogeographical Metaanalysis of the Semiarid Caatinga Domain in Brazil

Cited by 202 publications

References 93 publications

Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil

Patterns of species richness and abundance among cactus communities receiving different rainfall levels in the semiarid region of Brazil

Arbuscular mycorrhizal fungi in soils of arboreal Caatinga submitted to forest management

Plant functional types broadly describe water use strategies in the Caatinga, a seasonally dry tropical forest in northeast Brazil

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