scholarly journals Distribution of juveniles of tree species along a canopy closure gradient in a tropical cloud forest of the Venezuelan Andes

2016 ◽  
Vol 9 (3) ◽  
pp. 363-369
Author(s):  
A Quevedo Rojas ◽  
M Rico Jerez ◽  
T Schwarzkopf Kratzer ◽  
C García-Núñez
2021 ◽  
Vol 166 ◽  
pp. 106237
Author(s):  
Karina Osorio-Salomón ◽  
Martha Bonilla-Moheno ◽  
Fabiola López-Barrera ◽  
Cristina Martínez-Garza

2019 ◽  
Vol 222 (4) ◽  
pp. 1766-1777
Author(s):  
Daniel B. Metcalfe ◽  
Jenny C. M. Ahlstrand

Kew Bulletin ◽  
2021 ◽  
Author(s):  
Martin Cheek ◽  
Jean Michel Onana

SummaryWe revise and update the records of strict and near-endemic species of Mt Kupe, Cameroon respectively from 31 strict endemics in 2004, to 25 today, and with near-endemic species 30, unchanged in number but with turnover. The changes result from new collections, discoveries and taxonomic changes in the last 16 years. While 15 of the provisionally named putative endemic species have now been formally published, a further 18 have not. The majority of the 30 near-endemic species (18) are shared with the adjacent Bakossi Mts, far exceeding the numbers shared with the more distant Mt Etinde-Mt Cameroon, Rumpi Hills and Ebo forest areas (sharing three near-endemic species each with Mt Kupe). We test the hypothesis that a further one of the provisionally named putative Mt Kupe species, Vepris sp. 1 from submontane forest near the summit, is indeed new to science. We compare it morphologically with the two other bicarpellate high altitude Cameroon Highland tree species V. montisbambutensis Onana and V. bali Cheek, concluding that it is a new undescribed species here named as Vepris zapfackii. The new species is illustrated and its conservation status assessed as Critically Endangered using the 2012 IUCN standard, due to habitat clearance from agricultural pressures at its sole location which is unprotected. Vepris zapfackii and V. bali appear unique in African trifoliolate species of the genus in having opposite leaves. Vepris zapfackii differs in having hairy petiolules and midribs and petiolules with the blade decurrent distally, narrowing towards a winged-canaliculate base (vs glabrous and petiolule long, terete), and sparsely golden hairy pistillodes and a glabrous calyx (vs densely black hairy pistillodes, and sepals hairy).


Phytotaxa ◽  
2019 ◽  
Vol 418 (1) ◽  
pp. 1-41
Author(s):  
TANIA RAYMUNDO ◽  
RICARDO VALENZUELA ◽  
YENITZE GARCÍA-MARTÍNEZ ◽  
MARCO ANTONIO BRAVO-ÁLVAREZ ◽  
JULIO CÉSAR RAMÍREZ-MARTÍNEZ ◽  
...  

An intensive recollection of Ascomycetes was carried out within the best-known preserved Mexican tropical montane cloud forest patch dominated by Fagus grandifolia subsp. mexicana. This relict tree species has a fragmented and restricted distribution in the mountains of eastern Mexico. Other Mexican endemic Fagaceae species show dominance in this forest patch. Historically, records of Ascomycetes fungi in this type of forest are scarce. The present study found 170 specimens belonging to 61 species, of which 30 are new records for the state, while 10 species are cited for the first time in the country. Most of the recorded Ascomycetes species are intimately associated to Fagaceae tree species (Fagus and Quercus). From these, many are endophytes belonging to the Order Xylariales, while others grow on decaying wood, fallen branches, leaves and/or litter (possibly mycorrhizal). This interesting close relationship between fungi and Fagaceae trees must be studied and analyzed.


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