Especie nueva de Polylepis (Rosaceae) de la cordillera Vilcabamba (Cusco, Perú)

Mendoza, Wilfredo

doi:10.15381/rpb.v12i1.2364

Cited by 7 publications

(7 citation statements)

References 2 publications

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“…Distribución altitudinal.-El 94% (18) de las especies que se encuentran en el Perú, están concentradas en el rango altitudinal de 3000 a 4000 m, siendo Polylepis subsericans registrada a mayor altitud sobre los 5100 m (Mendoza 2005) para la Cordillera Vilcanota en Perú, y la especie registrada a menor altitud en Perú es P. pauta a tan solamente 1800 m, en la Cordillera de Accanacu en el departamento de Cusco (Tabla 3).…”

Section: Resultsunclassified

“…Posiblemente todas las especies llegan a producir híbridos debido a que muchas veces ocurren dos hasta tres especies en la misma localidad (Simpson 1979, Mendoza 2005. La hibridización en el género Polylepis es considerada común, observándose poblaciones híbridas en Bolivia y Ecuador (Simpson 1979 1986, Kessler 1995, Romoleroux 1996, que podría conducir a procesos de especiación (Schmidt-Lebuhn et al 2006).…”

Section: Discussionunclassified

“…En los bosques montanos y altoandinos de la Cordillera de los Andes, desde Venezuela hasta el norte de Chile y Argentina, con una población extratropical en el noreste y centro de Argentina, se distribuye el género Polylepis; que incluye alrededor de 27 especies (Simpson 1979, Cabido & Acosta 1985, Kessler 1995, Romoleroux 1996, Mendoza 2005. Siendo principalmente árboles o arbustos que crecen sobre el límite superior de los bosques.…”

Section: Introductionunclassified

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Diversity of the genus Polylepis (Rosaceae, Sanguisorbeae) in the Peruvian Andes

Mendoza

Cano

2011

Rev peru biol

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El presente estudio brinda información sobre la diversidad de las especies peruanas de Polylepis. Se reporta 19 especies (más del 70% de las 27 registradas para toda el área Andina), convirtiéndose el Perú en el país con mayor diversidad de Polylepis, en comparación a Bolivia (13), Ecuador (7), Argentina (4), Colombia (3), Chile (2) y Venezuela (1). Estas especies se distribuyen en 19 departamentos, encontrándose la mayor cantidad en Cusco (10) y Ayacucho (8). La mayor diversidad de especies (15) se registró en los Andes del sur, considerándose ésta región como el probable centro de diversificación del género Polylepis. Con respecto a la distribución altitudinal, la mayor diversidad de especies (18) se encuentra entre los 3000 y 4000 m de altitud.

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Section: Resultsunclassified

Section: Discussionunclassified

Section: Introductionunclassified

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Diversity of the genus Polylepis (Rosaceae, Sanguisorbeae) in the Peruvian Andes

Mendoza

Cano

2011

Rev peru biol

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“…The Polylepis canoi forests of the Tasta and Nahuin localities were characterized by much taller and thicker trees compared to the two other localities. It could be argued that at these localities the trees experience less severe growth conditions, with relatively higher temperatures and precipitation levels (Castro 2014;Mendoza 2005). The forests of P. canoi were characterized by presenting a tall and dense structure limiting the amount of light in the forest understory and inhibiting the development of young seedlings (Morales et al 2017), unlike a forest of P. besseri in which the absence of regeneration is due to a high degree of human impact (Martínez and Villarte 2009).…”

Section: D��mentioning

confidence: 99%

“…These forests provide environmental services in water regulation, mitigation of CO 2 emissions, soil protection and also provide habitats for endemic and threatened species (Fjeldså 2002;Fjeldså and Kessler 2006;Sevillano-Ríos and Rodewald 2017). Currently, about 35 Polylepis species are recognized (Boza et al 2019;Kessler and Schmidt-Lebuhn 2006;Segovia-Salcedo et al 2018), 22 of which (including seven endemic species) occur in Perú (Boza et al in press;Mendoza andCano 2012, 2011;Valenzuela and Villalba 2015).…”

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Estructura forestal de tres especies endémicas del género Polylepis (Rosaceae) en la Región Central del Perú

et al. 2019

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A��. Polylepis (Rosaceae) is the dominant tree genus in High-Andean forest ecosystems. These ecosystems are severely threatened, but li�le is known about their structure and functioning. We provide the first reports of the dasometric structure and spatial distribution of eight forests of Polylepis canoi, P. flavipila and P. rodolfovasquezii in the Central Peruvian Andes as fundamental information for management and conservation policies. We sampled all individuals ≥1 cm of diameter at ground level (DGL) in 20 plots of 10x10 m in each forest, and measured total height (TH) and DGL. Also, we mapped the spatial distribution of the individuals in two plots of 30x30 m (X and Y axes). We found differences in the dasometric structure between forests of the same species, which, in some cases, were associated with climate, soil or elevation variables. However, no well-defined pa�ern was found. The allometric relationships of the linear and non-linear models did not differ widely with respect to the R 2 nor to the Akaike (AIC) scores, indicating that the forests did not show a saturation of tree height with increasing diameter. In the P. canoi forests, individuals with diameters ≥10 cm were the most abundant. In contrast, the forests of P. rodolfo-vasquezii showed a predominance of individuals with diameters ≤10 cm, whereas P. flavipila presented an altered structure with no relationship between DGL and TH in one of the evaluated forests. The analysis of spatial distribution according to the Ripley's K function on a small scale revealed that P. flavipila and P. canoi presented random pa�erns, whereas P. rodolfo-vasquezii showed an aggregate pa�ern. Finally, our results showed that even forests of the same species have different dasometric structures, whereas spatial pa�erns differ only between species. So, caution must be taken when extrapolating information between species or forests during ecological studies and conservation actions.

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Taxonomic Reevaluation of the Polylepis sericea Complex (Rosaceae), with the Description of a New Species

2019

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Abstract—The taxonomically difficult genus Polylepis (Rosaceae) contains several problematic species complexes, including one around P. sericea. We here reevaluate species boundaries in this complex based on morphological characters and climatic niches. We recognize five species within the P. sericea complex, based primarily on leaf characters: P. albicans (northwestern Peru), P. argentea (central Peru) described here, P. canoi (southeastern Peru to central Bolivia), P. ochreata (Ecuador to southernmost Colombia), and P. sericea (Venezuela to central Colombia). We provide full synonymy, diagnostic notes, lists of selected specimens examined, and a key to the species of the complex.

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Especie nueva de Polylepis (Rosaceae) de la cordillera Vilcabamba (Cusco, Perú)

Cited by 7 publications

References 2 publications

Diversity of the genus Polylepis (Rosaceae, Sanguisorbeae) in the Peruvian Andes

Diversity of the genus Polylepis (Rosaceae, Sanguisorbeae) in the Peruvian Andes

Estructura forestal de tres especies endémicas del género Polylepis (Rosaceae) en la Región Central del Perú

Taxonomic Reevaluation of the Polylepis sericea Complex (Rosaceae), with the Description of a New Species

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