scholarly journals Distribution modelling of the Pudu deer (Pudu puda) in southern Chile

2020 ◽  
Vol 41 ◽  
pp. 47-69
Author(s):  
Nelson Colihueque ◽  
Aldo Arriagada ◽  
Andrea Fuentes
Keyword(s):  
Native Forest ◽  
Mountain Range ◽  
Southern Chile ◽  
Distribution Modelling ◽  
Conservation Implications ◽  
The Andes ◽  
Modelling Method ◽  
Extensive Coverage ◽  
Maxent Modelling ◽  
Coastal Mountain

The Pudu deer (Pudu puda) is endemic to the temperate rainforest of Chile and Argentina and currently faces serious conservation problems related to habitat loss. However, studies undertaken on this species are not sufficient to identify suitable areas for conservation purposes across its distribution range. In order to estimate the current and future distribution of the Pudu deer in southern Chile, we modelled the potential distribution of this species, based on occurrence points taken from seven contiguous provinces of this area using the Maxent modelling method. The Pudu deer distribution covered an estimated area of 17,912 km2 (24.1% of the area analysed), using a probability of occurrence above 0.529, according to the threshold that maximises the sum of sensitivity and specificity. In contrast to the Andes mountain range, areas with higher probabilities of occurrence were distributed mainly on the eastern and western slopes of the Coastal Mountain Range, where extensive coverage of native forest persists, as occurs in the provinces of Ranco, Osorno and Llanquihue. Projections to 2070, with global warming scenarios of 2.6 and 8.5 rcp, revealed that large areas will conserve their habitability, especially in the Coastal mountain range. Our results reveal that the Coastal mountain range has a high current and future habitability condition for the Pudu deer, a fact which may have conservation implications for this species.

Large wood abundance, distribution and mobilization in a third order Coastal mountain range river system, southern Chile

2010 ◽  
Vol 260 (4) ◽  
pp. 480-490 ◽  
Author(s):  
Andrés Iroumé ◽  
Andrea Andreoli ◽  
Francesco Comiti ◽  
Héctor Ulloa ◽  
Anton Huber
Keyword(s):  
River System ◽  
Mountain Range ◽  
Large Wood ◽  
Southern Chile ◽  
Abundance Distribution ◽  
Third Order ◽  
Coastal Mountain

General characteristics of active andean volcanoes and a summary of their activities during recent centuries

1963 ◽  
Vol 53 (6) ◽  
pp. 1415-1433
Author(s):  
Lorenzo Casertano
Keyword(s):  
Volcanic Activity ◽  
Central Valley ◽  
Mountain Range ◽  
Historical Account ◽  
The South ◽  
Chilean Coast ◽  
The North ◽  
The Andes ◽  
Transverse Fractures ◽  
Coastal Mountain

ABSTRACT An oceanic deep lies off the Chilean coast, bordered on the east by a coastal mountain range, a discontinuous central valley, and the high cordillera of the Andes. The Chilean volcanoes are found on lineaments that in general coincide with, or are sub parallel to, axis of the Andes. In north Chile they lie along en echelon fractures and, in some cases, along transverse fractures. In the south, the alignment of the volcanoes lies west of the axis of the Andes. Where the Central Valley is not well developed, active volcanoes are scarce. Recent lavas range from basalt in the south to rhyolite in the north. Volcanic activity appears to be decreasing. Details are given of individual volcanoes, and a list of active Andean volcanoes south of Volcan Misti is presented with a historical account of their activity.

scholarly journals Reach scale ecologic influence of in-stream large wood in a Coastal Mountain range channel, Southern Chile

2014 ◽  
Vol 78 (2) ◽  
pp. 85-97 ◽  
Author(s):  
MACARENA VERA ◽  
CARLOS JARA ◽  
ANDRÉS IROUMÉ ◽  
HÉCTOR ULLOA ◽  
ANDREA ANDREOLI ◽  
...  
Keyword(s):  
Mountain Range ◽  
Large Wood ◽  
Southern Chile ◽  
Coastal Mountain

scholarly journals Native forest replacement by exotic plantations in southern Chile (1985–2011) and partial compensation by natural regeneration

2015 ◽  
Vol 345 ◽  
pp. 10-20 ◽  
Author(s):  
Carlos Zamorano-Elgueta ◽  
José María Rey Benayas ◽  
Luis Cayuela ◽  
Stijn Hantson ◽  
Dolors Armenteras
Keyword(s):  
Natural Regeneration ◽  
Native Forest ◽  
Southern Chile ◽  
Exotic Plantations ◽  
Partial Compensation

The Vegetation of a Coastal Mountain Range

Ecology ◽  
1927 ◽  
Vol 8 (1) ◽  
pp. 27-44 ◽  
Author(s):  
Forrest Shreve
Keyword(s):  
Mountain Range ◽  
Coastal Mountain

Estimating the snow-rain transition zone in a semi-arid Andean catchment

2021 ◽  
Author(s):  
Simone Schauwecker ◽  
Gabriel Palma ◽  
Shelley MacDonell ◽  
Katerina Goubanova
Keyword(s):  
Transition Zone ◽  
Early Warning Systems ◽  
Mountain Range ◽  
Arid Environments ◽  
Local Conditions ◽  
The Andes ◽  
Snow Line ◽  
Snow Cover Extent ◽  
Semi Arid ◽  
Precipitation Events

<p>The height of the snow-rain transition during infrequent but high impact precipitation events, closely related to the 0⁰C-isotherm, is a crucial variable for snow cover extent, high discharge flows and flash floods in semi-arid northern Chile. Estimations of the snow-rain transition zone and its past and future changes are therefore fundamental for adaptation strategies and might eventually serve to develop early warning systems in this region. However, there are important challenges that hinder the assessment of the snow-rain transition zone in semi-arid environments and little is known about past and future changes under different global warming scenarios. For example, there are few radiosonde observations along the Andes and most weather stations are located in valley bottoms, influenced by local conditions and the assumption of free-air temperature lapse rates contributes to the uncertainty. We combine different data sets to estimate the past snow-rain transition zone of our study site, the semi-arid Elqui river catchment. Pictures of the snow line after precipitation events - available from social networks - are used to visually estimate the snow line elevation. These values are in high agreement with vertically extrapolated temperature from meteorological stations. Furthermore, we identified considerable biases between the extrapolated 0⁰C-isotherm from meteorological stations and ERA5 reanalysis data. These large biases are probably due to the lowering of the freezing level over complex terrain and need further analysis. Our results contribute to an improved understanding of the snow-rain transition in this region, but also serve to derive a climatology of this key variable along the Andes mountain range, needed for future projections.</p>

Calls distinguish species of Antbirds (Aves: Passeriformes: Thamnophilidae) in the genus Pyriglena

Zootaxa ◽  
2017 ◽  
Vol 4291 (2) ◽  
pp. 275 ◽  
Author(s):  
MORTON L. ISLER ◽  
MARCOS MALDONADO-COELHO
Keyword(s):  
Distinct Species ◽  
High Mountain ◽  
Mountain Range ◽  
The Andes ◽  
The Pacific ◽  
Major River ◽  
Pacific Slope ◽  
Pyriglena Leucoptera ◽  
Taxonomic Studies ◽  
Central South

Populations in the genus Pyriglena Cabanis, 1847, commonly known as fire-eyes, are patchily distributed in central South America from the Pacific slope of the Andes to the Atlantic Forest of Brazil. Pyriglena populations are currently placed into 12 taxa, only five of which are not isolated from their neighbors by distance, a high mountain range, or a major river. In the Thamnophilidae, taxonomic decisions regarding such allopatric populations have primarily rested on differences in vocalizations, thought not to be learned and to play a key role in the speciation process. When we examined Pyriglena vocalizations in this context, the outcomes revealed substantial diversity in their calls, rather than their songs. They commonly delivered four different types of calls, unusual although not unprecedented in thamnophilids. Diversity in calls rather than songs underscores the need to consider all vocalizations in taxonomic studies. The outcomes support the continued recognition of the White-shouldered Fire-eye Pyriglena leucoptera (Vieillot) and Fringe-backed Fire-eye Pyriglena atra (Swainson) as distinct species, and indicate that, in addition, the currently constituted Pyriglena leuconota should be considered three species: the Western Fire-eye Pyriglena maura (Ménétries); the Tapajos Fire-eye Pyriglena similis Zimmer; and the East Amazonian Fire-eye Pyriglena leuconota (von Spix). We also identify taxonomic uncertainties regarding subspecies that require acquisition of additional data and further analysis. 

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