A revision of <i>Scleria</i> (<i>Cyperaceae</i>) in Madagascar

Díaz, Javier Galán; Bauters, Kenneth; Rabarivola, Linah; Xanthos, Martin; Goetghebeur, Paul; Larridon, Isabel

doi:10.3767/blumea.2019.64.03.01

Cited by 8 publications

(9 citation statements)

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“…For a description and notes on the genus, see Goetghebeur (1998). For infrageneric classification and recent taxonomic treatments, see Bauters et al (2016, 2018, 2019), Bauters (2018), and Galán Díaz et al (2019).…”

Section: Taxonomic Treatmentmentioning

confidence: 99%

A new classification of Cyperaceae (Poales) supported by phylogenomic data

Larridon

Zuntini

Léveillé‐Bourret

et al. 2021

J of Sytematics Evolution

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Cyperaceae (sedges) are the third largest monocot family and are of considerable economic and ecological importance. Sedges represent an ideal model family to study evolutionary biology due to their species richness, global distribution, large discrepancies in lineage diversity, broad range of ecological preferences, and adaptations including multiple origins of C 4 photosynthesis and holocentric chromosomes. Goetghebeur′s seminal work on Cyperaceae published in 1998 provided the most recent complete classification at tribal and generic level, based on a morphological study of Cyperaceae inflorescence, spikelet, flower, and embryo characters, plus anatomical and other information. Since then, several family-level molecular phylogenetic studies using Sanger sequence data have been published. Here, moreThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Taxonomic Treatmentmentioning

confidence: 99%

A new classification of Cyperaceae (Poales) supported by phylogenomic data

Larridon

Zuntini

Léveillé‐Bourret

et al. 2021

J of Sytematics Evolution

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“…Nine species are endemic to Madagascar, mostly restricted to the tropical montane forests. Scleria section Abortivae includes five species endemic to Madagascar and the western Indian Ocean islands (Galán Díaz et al., 2019). Two other genera include a significant number of endemic species: Bulbostylis and Schoenoplectiella .…”

Section: Discussionmentioning

confidence: 99%

“…Distribution data were obtained from Govaerts et al. (2020) and recent literature (Galán Díaz et al., 2019; Larridon et al., 2019). Biogeographical analyses were carried out in the R (R Core Team, 2019) package BioGeoBEARS (Matzke, 2013).…”

Section: Methodsmentioning

confidence: 99%

The evolutionary history of sedges (Cyperaceae) in Madagascar

Larridon

Spalink

Jiménez‐Mejías

et al. 2021

Journal of Biogeography

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Aim Madagascar is renowned for its unparalleled biodiversity and endemism. With many ecosystems under threat, research is urgently needed on its unique plant diversity. This applies both to Madagascar's forests and treeless vegetation types. Sedges (Cyperaceae) are among the top 10 species‐richest angiosperm families in Madagascar (310 native species, 38% endemic), of which two‐thirds occur in open habitats. We aimed to infer the evolutionary history of sedges in Madagascar, by estimating the number, age and origins of endemic lineages, and how they diversified on the island. We tested contrasting hypotheses of (a) few colonizations but important in situ radiations against (b) a high number of anagenetic colonizations. Location Madagascar and the surrounding Indian Ocean islands, integrated within a global dataset. Taxon Sedge family Cyperaceae. Methods We estimated time‐calibrated molecular phylogenies encompassing a large proportion of Madagascar's known sedge flora (incl. 55% of native species), integrating sequence data for 1,382 accessions representing almost 25% of the c. 5,600 sedge species worldwide, combined with ancestral area reconstruction, diversification analyses and Bayesian stochastic mapping. Results Cyperaceae lineages arrived in Madagascar from c. 40 Mya with many arriving more recently. About 20 endemic lineages of Cyperaceae occur on the island, of which only six encompass more than five species. All except one of the endemic lineages that diversified in Madagascar use the C3 photosynthetic pathway. The main biogeographical links of Madagascar's sedge flora are to Southern and Tropical Africa. Main conclusions The biogeographical history of Cyperaceae in Madagascar is a chronicle of relatively recent multiple in and out processes of long‐distance dispersal colonizations constrained by distance. Also, the Madagascar region is not only a ‘sink’ for immigrant taxa, in situ diversification and dispersal to other regions also occurred. Some of the most diverse endemic lineages show clear adaptation to local environments.

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“…Most species occur in tropical areas but some occupy more temperate climatic regions (Larridon et al 2021b). Scleria is a functionally diverse genus that includes annual and perennial herbs, the latter often using stoloniferous rhizomes or tubers (Bauters et al 2016; Galán Díaz et al 2019). Recent studies have disentangled the evolutionary relationships among Scleria species (Bauters et al 2016, 2018) and identified major dispersal and niche shift events (Larridon et al 2021b).…”

Section: Introductionmentioning

confidence: 99%

Identifying conservation priorities of a pantropical plant lineage: a case study in Scleria (Cyperaceae)

Díaz,

Bachman,

Forest

et al. 2024

Preprint

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Scleriais a pantropical genus of annual and perennial herbs and the sixth largest genus in the Cyperaceae family with around 261 species. In this study, we produced preliminary extinction risk assessments for the ∼30% ofScleriaspecies that do not yet have a global Red List assessment and followed the Evolutionarily Distinct and Globally Endangered (EDGE2) and Ecologically Distinct and Globally Endangered (EoDGE) protocols to identify evolutionary and ecologically uniqueScleriaspecies at greatest risk of extinction and hotspots of rare and endangered species. Our results indicate that 38 of the 78Scleriaspecies not yet included in the Red List, and 26% of species in the genus, are potentially threatened with extinction. The risk of extinction is not equally distributed across the phylogeny, and the Afrotropics and the Neotropics accumulate most threatened species. Eleven ecoregions mostly from four African (Madagascar, D.R. Congo, Zambia and Tanzania) and two South American (Brazil, Venezuela) countries accumulate almost half ofScleriaspecies and stand out in terms of their sum of EDGE2 scores. Phylogenetic and functional distinctiveness metrics were largely uncorrelated, and the EcoDGE metric mostly points towards South American countries as reservoirs of ecologically distinctive and endangered species: Brazil, Venezuela, Bolivia, Peru, Colombia, Guyana and Dominican Republic. Recent methodological advances in the identification of species at-risk of extinction and the novel EDGE2 framework emerge as powerful tools to identify conservation priorities.

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A revision of Scleria (Cyperaceae) in Madagascar

Cited by 8 publications

References 0 publications

A new classification of Cyperaceae (Poales) supported by phylogenomic data

A new classification of Cyperaceae (Poales) supported by phylogenomic data

The evolutionary history of sedges (Cyperaceae) in Madagascar

Identifying conservation priorities of a pantropical plant lineage: a case study in Scleria (Cyperaceae)

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