Tree seedlings respond to both light and soil nutrients in a Patagonian evergreen-deciduous forest. [PDF]
Seedlings of co-occurring species vary in their response to resource availability and this has implications for the conservation and management of forests.
Alvaro Promis, Robert B Allen
doaj +2 more sources
Nectar Robbery by Native and Invasive Bumblebees Reduces Floral Rewards but Not Seed Production in Desfontainia fulgens [PDF]
We evaluated nectar robbery by native and invasive bumblebees in the hummingbird‐pollinated shrub Desfontainia fulgens in southern Chile. Nectar robbery strongly reduced nectar standing crop and altered floral visitation patterns, but these proximate effects did not translate into reduced seed production under natural pollination conditions.
Carlos E. Valdivia, José I. Orellana
wiley +2 more sources
Feather Microbiota Landscapes: Biogeography and Phenology Shape Feather Microbiota Traits in a Migratory Seabird in a Subantarctic Ecosystem [PDF]
ABSTRACT It is known that phenological changes (i.e., behavioural and sometimes morphological and physiological traits that repeat annually) influence the wildlife gut microbiota. However, it remains largely unknown to what extent geographic variation could modulate the effect that phenology has on wildlife microbiota.
Manuel Ochoa‐Sánchez +6 more
wiley +2 more sources
Low population genetic structure in five Chilean Nothofagus species and high fluctuating asymmetry in Nothofagus pumilio x N. antarctica putative hybrids [PDF]
Background Following historic natural disturbances, interspecific hybridization has been documented between several Nothofagus species in Chilean forests.
Riley Yewon Jung +2 more
doaj +2 more sources
Evidence of endozoochory in upland geese Chloephaga picta and white‐bellied seedsnipes Attagis malouinus in sub‐Antarctic Chile [PDF]
Birds are known to act as potential vectors for the exogenous dispersal of bryophyte diaspores. Given the totipotency of vegetative tissue of many bryophytes, birds could also contribute to endozoochorous bryophyte dispersal. We evaluated the role of endozoochory in two herbivorous and sympatric bird species in sub‐Antarctic Chile and hypothesized that
Xenabeth A. Lázaro +2 more
wiley +2 more sources
Leaf wettability, anatomy and ultra-structure of Nothofagus antarctica and N. betuloides grown under a CO2 enriched atmosphere [PDF]
Increasing CO2 air concentration may affect wettability, anatomy and ultra-structure of leaves of Patagonian forest species, evergreen and deciduous plants potentially responding differently to such CO2 increases. In this study, we analysed the wettability, anatomy and ultra-structure of leaves of Nothofagus antarctica (deciduous) and N.
Bahamonde, Héctor A. +4 more
openaire +6 more sources
Landscape and microenvironmental conditions influence over regeneration dynamics in old-growth Nothofagus betuloides Southern Patagonian forests [PDF]
Abstract Old-growth forests present a mosaic of different conditions resulting from the natural forest structure of the stands. Nothofagus betuloides forests have high spatial variability in regeneration without a clear correlation with overstory, and could be related to location of the stands in the landscape.
Martínez Pastur, Guillermo José +5 more
openaire +3 more sources
Response of Nothofagus betuloides (Mirb.) Oersted to different thinning intensities in Tierra del Fuego (Argentina). [PDF]
O setor florestal da Argentina e Chile tem-se desenvolvido principalmente sobre a base do cultivo de espécies exóticas, ocupando, o bosque nativo, um lugar secundário na definição de políticas de investigação e desenvolvimento. Os bosques de Nothofagus conformam a totalidade do recurso madereiro para as serrarias em Tierra del Fuego.
Martínez Pastur, Guillermo J. +5 more
core +4 more sources
Mixed forests of Nothofagus pumilio and N. betuloides: Are they stable? Approximation based on the study of the first stages of natural regeneration cycle [PDF]
Curitiba
Toro Manríquez, Mónica del Rosario +3 more
openaire +3 more sources
Bosques mixtos de Nothofagus pumilio y N. betuloides: ¿son estables? [PDF]
Introducción: La variación en la fenología reproductiva de las especies es un mecanismo importante para mantener la coexistencia de las mismas en los bosques mixtos. En estos, el impacto de los factores limitantes (bióticos y abióticos) en el éxito reproductivo podría estar influenciando sobre las proporciones de las especies que los conforman ...
Toro Manríquez, Mónica +1 more
openaire +6 more sources

