Museum-archived and recent acquisition nitrates from the Atacama Desert, Chile, South America: refinement of the dual isotopic compositions (δ15N vs. δ18O)

Geranoaetus polyosoma (Quoy & Gaimard, 1824) is a diurnal raptor widely distributed in South America. Although the trophic ecology of this bird has been more studied in the southern extreme of its range, little information is available on its dietary response to prey supply in desert environments. In the present study, we report on the trophic ecology of G. polyosoma in a sub-urban desert zone in northern Chile, with the following objectives: (1) to quantitatively describe its diet and (2) to determine its dietary selectivity in response to prey supply in the study area. The diet of G. polyosoma consisted mainly of rodents (97.2%). A greater preference (p < 0.05) was observed for the following large prey items (> 19.5 g): two native rodent species, Phyllotis xanthopygus (Waterhouse, 1837) and Eligmodontia puerulus (Philippi, 1896); and two introduced rodent species: Rattus rattus (Linnaeus, 1769) and R. norvegicus (Berkenhout, 1769).

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Weberbauerella chilensis (Fabaceae: Papilionoideae), a new species from the Atacama Desert, Chile

Phytotaxa ◽

10.11646/phytotaxa.156.1.2 ◽

2014 ◽

Vol 156 (1) ◽

pp. 41 ◽

Cited By ~ 1

Author(s):

Patricio Saldivia ◽

LUIS FAÚNDEZ

Keyword(s):

New Species ◽

South America ◽

Atacama Desert ◽

First Record ◽

Southern Cone ◽

Legume Species ◽

Habitat Conditions ◽

The Third ◽

A New Species

A new legume species, Weberbauerella chilensis, from the Andean foothills in the Tarapacá region in Chile, is described and illustrated. This species represents the first record of the genus in Chile and the Southern Cone of South America and is the third species described for the genus. Weberbauerella chilensis resembles W. brongnartioides from Peru, but differs primarily in its smaller size, fewer leaflets and habitat conditions.

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Miscanti-1: Human occupation during the arid Mid-Holocene event in the high-altitude lakes of the Atacama Desert, South America

Quaternary Science Reviews ◽

10.1016/j.quascirev.2017.12.010 ◽

2018 ◽

Vol 181 ◽

pp. 109-122 ◽

Cited By ~ 2

Author(s):

Lautaro Núñez ◽

Rodrigo Loyola ◽

Isabel Cartajena ◽

Patricio López ◽

Boris Santander ◽

...

Keyword(s):

South America ◽

High Altitude ◽

Atacama Desert ◽

Human Occupation ◽

High Altitude Lakes

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Contrasting variations in the diet of the Andean fox Lycalopex culpaeus Molina, 1782 on geographical and environmental scales in the Atacama Desert

Mammalia ◽

10.1515/mammalia-2018-0130 ◽

2019 ◽

Vol 83 (5) ◽

pp. 439-446

Author(s):

Felipe S. Carevic ◽

Erico R. Carmona ◽

Francisco Cartes ◽

Felipe Taucare

Keyword(s):

South America ◽

Prey Species ◽

Atacama Desert ◽

Current Data ◽

Dietary Breadth ◽

History Of ◽

Study Sites ◽

Number Of Individuals ◽

Andean Fox ◽

Main Food Item

Abstract We determined the seasonal diet of the Andean fox Lycalopex culpaeus in three habitats in the Atacama Desert, northern Chile, by analyzing their scat contents. We estimated the biomass and the number of individuals of each prey species consumed and compared our results with those of other studies on Lycalopex foxes in Chile and South America. In general, the L. culpaeus diet was characterized by a generalist behavior and higher dietary breadth than those in other ecosystems. In contrast with the other biomes of southern Chile and South America, insects represented the most frequent prey species in the present study and the main food item, comprising more than 50% of all prey at the three study sites; however, in terms of biomass, rodent and reptile prey showed the highest percentage from summer to winter. Significant differences were found between the biomass consumed among sites. Likewise, we found a relationship between the niche breadth of the diet and the primary productivity of the sites. Statistically significant differences in prey items consumed were noted across seasons and sites located at different altitudes, which reflected an opportunistic response to the availability of prey. Our report contributes to current data about the natural history of L. culpaeus in hyper-arid habitats.

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Transatlantic Techno Myths: The 1994 Arica Eclipse Rave as an Example of the History and Historiography of Electronic Dance Music between Chile and Germany

twentieth century music ◽

10.1017/s1478572220000201 ◽

2020 ◽

Vol 17 (3) ◽

pp. 419-433

Author(s):

MATTHIAS PASDZIERNY

Keyword(s):

South America ◽

Atacama Desert ◽

Dance Music ◽

Intercultural Understanding ◽

Electronic Dance Music ◽

International History ◽

Cultural Mediators ◽

History Of ◽

Event Based

AbstractThis article focuses on one of the earliest truly international Electronic Dance Music (EDM) festivals: the Eclipse Rave in Arica, in the Chilean Atacama Desert in November 1994. As a collaboration of mainly German and Chilean individuals, the event was confronted with a multitude of organizational obstacles and problems of intercultural understanding. Nevertheless, the event has now achieved a kind of cult status and is mythologized as the breakthrough moment of EDM culture in South America. Drawing on German and Chilean sources, the article sheds light on the background and impact of the festival and discusses the important role of Chilean-German exiles as interpreters and cultural mediators within EDM scenes. This contribution questions the types of sources that festivals and similar events generate, and consequently asks how an international history of the event-based and present- and history-obsessed EDM culture could be written at all.

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A new titanosaur sauropod from the Atacama Desert, Chile

Anais da Academia Brasileira de Ciências ◽

10.1590/s0001-37652011000100011 ◽

2011 ◽

Vol 83 (1) ◽

pp. 211-219 ◽

Cited By ~ 9

Author(s):

Alexander W.A. Kellner ◽

David Rubilar-Rogers ◽

Alexander Vargas ◽

Mario Suárez

Keyword(s):

New Species ◽

South America ◽

Upper Cretaceous ◽

Atacama Desert ◽

Northern Chile ◽

Red Sandstone ◽

Caudal Vertebrae ◽

The Pacific ◽

Pacific Margin ◽

A New Species

Partial remains of a titanosaur sauropod collected in the Tolar Formation (Upper Cretaceous) at the Atacama Desert (Antofagasta Region), northern Chile, is described, and a new species, Atacamatitan chilensis gen. et sp. nov., is erected. The material consists mainly of dorsal and caudal vertebrae, part of a humerus and a femur. The presence of a titanosaur confirms the Cretaceous age for the outcrops of red sandstone of the Tolar Formation whose age was previously uncertain, ranging from the Upper Cretaceous to the Paleocene. The new specimen represents the most complete dinosaur reported for this region and one of the most complete titanosaur known from Chile and the pacific margin of South America so far.

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Stomatal conductance patterns of Equisetum giganteum stems in response to environmental factors in South America

Botany ◽

10.1139/cjb-2013-0312 ◽

2014 ◽

Vol 92 (10) ◽

pp. 701-712 ◽

Cited By ~ 2

Author(s):

Chad E. Husby ◽

José Delatorre-Herrera ◽

Steven F. Oberbauer ◽

Alfredo Grau ◽

Lázaro Novara

Keyword(s):

Stomatal Conductance ◽

South America ◽

Vapor Pressure Deficit ◽

Red Light ◽

Atacama Desert ◽

Diurnal Pattern ◽

Passive System ◽

Unusual Structure ◽

Physiological Adaptations ◽

Stomatal Apparatus

As the most basal monilophytes, eusporangiate ferns can provide key insights into the origins of plant physiological adaptations. The genus Equisetum, the most morphologically and physiologically unusual genus of eusporangiate ferns, has a stomatal apparatus that is unique among all plants. Patterns of stomatal diffusive conductance (gw) were measured in the giant horsetail, Equisetum giganteum L. in southern South America. Maximum gw values (<200 mmol·m−2·s−1) were low in comparison with typical angiosperm leaves, but were in the range measured in other pteridophytes. The range of measured gw was similar in contrasting environments of the Atacama Desert and northwestern Argentina. Stems in shade had a significantly lower gw than those in light. Developing stems had a higher average gw than mature stems. Stomatal conductance was higher for upper stem internodes than for middle internodes. Late-morning gw was primarily related to stem diameter, stem surface temperature, and interactions among these factors and vapor pressure deficit (VPD), light, elevation, and groundwater salinity. Equisetum giganteum likely has a passive system of stomatal regulation depending on overall stem turgor and red light. The stomatal conductance of patterns of this species exhibited a diurnal pattern typical of other pteridophytes, despite its unusual structure.

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