Results 21 to 30 of about 5,085 (169)

Two Nothofagus Species in Southernmost South America Are Recording Divergent Climate Signals [PDF]

Forests, 2022
Recent climatic trends, such as warming temperatures, decrease in rainfall, and extreme weather events (e.g., heatwaves), are negatively affecting the performance of forests. In northern Patagonia, such conditions have caused tree growth reduction, crown
Aravena, Juan Carlos, Bringas, Christian, Gonzalez Reyes, Álvaro, Grießinger, Jussi, Meier, Wolfgang Jens-Henrik, Soto-Rogel, Pamela, Villalba, Ricardo   +6 more
core   +3 more sources

Bosques mixtos de Nothofagus pumilio y N. betuloides: ¿son estables? [PDF]

, 2019
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 ...
M. Manríquez
openaire   +5 more sources

Biocultural Calendars Across Four Ethnolinguistic Communities in Southwestern South America. [PDF]

Geohealth, 2023
Abstract Since the mid‐20th century, the so‐called Great Acceleration (sensu Steffen et al., 2007, https://doi.org/10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2) has amplified processes of ecosystem degradation, extinction of biological species, displacement of local peoples, losses of languages, and cultural diversity.
Rozzi R, Rozzi R, Álvarez R, Castro V, Núñez D, Ojeda J, Tauro A, Massardo F.   +7 more
europepmc   +2 more sources

Survival rates in the world's southernmost forest bird community. [PDF]

Ecol Evol, 2023
In this article, we describe the temporal dynamics in survival probabilities for the world's southernmost forest bird community and their relationship to climatic variables. We develop a multispecies hierarchical survival model using Bayesian inference to jointly explore age‐dependent survival probabilities at the community and species levels in a ...
Sandvig EM, Quilodrán CS, Altamirano TA, Aguirre F, Barroso O, Rivero de Aguilar J, Schaub M, Kéry M, Vásquez RA, Rozzi R.   +9 more
europepmc   +2 more sources

Vegetation type, landscape and climate define vegetation water content: implications for sustainable management at Southern Patagonia

Environmental Research Letters
Ecosystem management requires integrative tools for planning and decision-making at landscape scales. Vegetation water content (VWC) has been proposed as a holistic indicator of entire plant water status and ecosystem functioning.
Long Jia, Julián Rodríguez Souilla, María Vanessa Lencinas, Pablo Luis Peri, Xinwu Li, Wenjin Wu, Guillermo J Martínez Pastur   +6 more
doaj   +2 more sources

Feather Microbiota Landscapes: Biogeography and Phenology Shape Feather Microbiota Traits in a Migratory Seabird in a Subantarctic Ecosystem. [PDF]

Mol Ecol
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.
Ochoa-Sánchez M, Acuña-Gómez EP, Moraga CA, Acevedo J, Valenzuela P, Eguiarte LE, Souza V.   +6 more
europepmc   +2 more sources

Evidence of endozoochory in upland geese Chloephaga picta and white-bellied seedsnipes Attagis malouinus in sub-Antarctic Chile. [PDF]

Ecol Evol, 2021
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
Lázaro XA, Mackenzie R, Jiménez JE.
europepmc   +2 more sources

UAV LiDAR in coastal environments: Archaeological case studies from Tierra del Fuego, Argentina, and Vega, Norway

Archaeological Prospection, Volume 30, Issue 4, Page 533-557, October/December 2023., 2023
Abstract LiDAR has become fairly integrated into archaeological practice at a global scale. This has gradually evolved to include UAV LiDAR. Nevertheless, considerable biases remain, including with regard to geographical regions, chronological periods, feature types and environments.
Ole Risbøl, Jo Sindre P. Eidshaug, Hein B. Bjerck, Magnar M. Gran, Kristoffer R. Rantala, Angélica M. Tivoli, Atilio Francisco J. Zangrando   +6 more
wiley   +1 more source

The dynamic trophic niche of an island bird of prey. [PDF]

Ecol Evol, 2020
We studied intraspecific variation in the trophic niche of a resident population of striated caracara on Isla de los Estados, Argentina, using pellet and stable isotope analyses. Isotopic niche of this species varies with season, age, breeding status, and, to a lesser extent, year.
Balza U, Lois NA, Polito MJ, Pütz K, Salom A, Raya Rey A.   +5 more
europepmc   +2 more sources

The delayed effect of climatic conditions on pre‐fledging nestling haematocrit in a suboscine species in Patagonia

Journal of Avian Biology, Volume 2023, Issue 9-10, September/October 2023., 2023
Haematocrit, the proportion of blood comprising erythrocytes, is often used as a proxy of individual condition. Nestling haematocrit is influenced by several factors but ambient temperature is generally agreed as a key driver. It is unclear which day(s) in embryonic or nestling development are most influential in determining pre‐fledgling haematocrit ...
Joseph E. Badji-Churchill, Martje L. M. Birker, Maaike Versteegh, Tomás A. Altamirano, Rodrigo A. Vásquez, Jan Komdeur   +5 more
wiley   +1 more source