Three new scaly tree fern species (<i>Cyathea</i>-Cyatheaceae) from the Amotape-Huancabamba Zone and their biogeographic context

Lehnert, Marcus; Tejedor, Adrian

doi:10.1640/afj-d-16-00002.1

Cited by 9 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Given that avoiding potentially misidentified herbarium accessions was a major concern of this study, analyses were based on a database of presence/absence at second order political units (regions in Peru, departments in Bolivia, and provinces in Argentina) and minimum and maximum elevation records obtained from floristic treatments and species descriptions (Lehnert, 2009;2011;Lehnert and Tejedor, 2016;Márquez, 2010;Martínez, 2014). This approach required assuming non-disjunct distributions.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, while these results are suitable to guide conservation efforts at continental scales, their usefulness is limited at country or province scales, where most of the prioritization of conservation areas is actually made (Possingham et al, 2006). The present study offers a more fine-grained analysis of patterns of diversity and endemism of tree ferns in the Central Andes, with an emphasis on Peru, based on recent floristic and taxonomic work (Lehnert, 2009;2011;Lehnert and Tejedor, 2016;Márquez, 2010;Martínez, 2014) and on the assumption of non-disjunct distributions. These results provide a tool for predicting tree fern species richness in the Central Andes and for identification of areas important for the conservation of this group and tropical montane forests.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Diversity and endemism of tree ferns (Cyatheaceae: Polypodiopsida) in the Central Andes along latitudinal and elevation gradients

Gutierrez¹

2018

abm

View full text Add to dashboard Cite

Tree ferns are a conspicuous and yet poorly known component of Neotropical montane forests. Conservation efforts for these plants are hindered by a lack of information of patterns of species richness and endemism, which has been in turn prevented by an unstable taxonomy and limited collections. Based on distribution data from the most recent floristic accounts of tree ferns from Peru, Bolivia, and Argentina, this study presents an analysis of species richness and endemism of this group in the Central Andes. Results show that tree fern diversity falls steeply with distance from the equator, and the effect is stronger in the lowlands than at tree line to -20°. In elevation, tree fern species richness shows a bimodal distribution with peaks at 1000 and 2100 m, where as many as 24 species can coexist in 200 m elevation intervals. Endemic species are concentrated in the northern Central Andes. Endemics in more southern latitudes tend to be restricted to higher elevations. Correspondingly, the tree fern flora of the southern Central Andes is mostly composed of widely ranging species, potentially tolerant of higher seasonality and longer term climatic fluctuations. These results provide a tool for predicting how many tree fern species should be found in any given area of the Central Andes, even those botanically unexplored, and indicates areas where species richness and endemism is concentrated, and may serve to guide efforts aimed to conserve tropical montane forests.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diversity and endemism of tree ferns (Cyatheaceae: Polypodiopsida) in the Central Andes along latitudinal and elevation gradients

Gutierrez¹

2018

abm

View full text Add to dashboard Cite

show abstract

“…Simultaneously, at the regional level, it is a region with steep and rugged topography, and highly variable geology and climate that results in a landscape of varied and isolated vegetation types (Mandl et al 2010). The region also has exceptional fern diversity (Kessler and Lehnert 2009a), with many new species being continuously described (e.g., Lehnert and Tejedor 2016;Tejedor and Calatayud 2017). This also applies to the grammitid ferns, a monophyletic lineage of mostly epiphytic ferns belonging to the family Polypodiaceae (Schneider et al 2004;Ranker et al 2004;Sundue et al 2015), which includes some 400 species in the Neotropics and 500 species in the Palaeotropics (Bauret et al 2017).…”

mentioning

confidence: 99%

Ascogrammitis lehnertii (Polypodiaceae): A New and Dominant Understory-Species from a Diverse Community of Grammitid Ferns in the Andes of Ecuador

2018

View full text Add to dashboard Cite

In the scope of pantropical studies aimed at understanding how the diversity of grammitid ferns (Polypodiaceae) has evolved and is maintained, we studied a diverse grammitid community in treeline elfin forests in eight study plots of 400 m2 each at 3200 m on Cerro Toledo, Loja, southern Ecuador.Werecorded a total of 7986 individuals of 16 grammitid species. Ascogrammitis lehnertii is here described as a newspecies.We also recorded Mycopteris leucosticta, a species previously believed to be restricted to the Choc´o region of Ecuador. We found that the grammitid species were segregated by habitat into trunk-base and trunk specialists, which suggests that species coexistence in these diverse epiphytic communities is at least partly linked to habitat segregation. Ascogrammitis lehnertii and M. leucosticta were the second and third most abundant species, respectively, and both were mostly trunkbase species. The new species A. lehnertii differs from its congeners by the combination of its relatively broad lamina, (2-)3-4 cmwide, fertile leaves bearing 2mmlong reddish setae in and near the sori, and by bearing proliferous roots from which new plants emerge. Phylogenetic analyses of atpß, rbcL, rps4, trnG-trnR, andtrnL-trnFDNAmolecular sequences, usingmaximum likelihood, place A. lehnertii as sister to A. cuencana with strong support. Despite previous intensive collection efforts in Loja for the past 30 yr, all but one of the collections of this new species were made in the last three years. The discovery of A. lehnertii and the new record of M. leucosticta highlight the patchy distribution of some species in the Andes and the value of surveying.

show abstract

New species of scaly tree ferns (Cyatheaceae) from New Guinea, and new combinations for the family for Malesia

Lehnert

Cámara‐Leret

2019

Kew Bull

View full text Add to dashboard Cite

Three new scaly tree fern species (Cyathea-Cyatheaceae) from the Amotape-Huancabamba Zone and their biogeographic context

Cited by 9 publications

References 20 publications

Diversity and endemism of tree ferns (Cyatheaceae: Polypodiopsida) in the Central Andes along latitudinal and elevation gradients

Diversity and endemism of tree ferns (Cyatheaceae: Polypodiopsida) in the Central Andes along latitudinal and elevation gradients

Ascogrammitis lehnertii (Polypodiaceae): A New and Dominant Understory-Species from a Diverse Community of Grammitid Ferns in the Andes of Ecuador

New species of scaly tree ferns (Cyatheaceae) from New Guinea, and new combinations for the family for Malesia

Contact Info

Product

Resources

About