Protracted Magmatic-Hydrothermal History of the Río Blanco-Los Bronces District, Central ChileDevelopment of World's Greatest Known Concentration of Copper

2012 ◽  
Author(s):  
Juan Carlos Toro ◽  
Javier Ortúzar ◽  
Jorge Zamorano ◽  
Patricio Cuadra ◽  
Juan Hermosilla ◽  
...  
Keyword(s):  
Central Chile ◽  
History Of

Some hydrozoans (Cnidaria) from Central Chile and the Strait of Magellan

Zootaxa ◽  
2012 ◽  
Vol 3296 (1) ◽  
pp. 19 ◽  
Author(s):  
HORIA R. GALEA ◽  
DIRK SCHORIES
Keyword(s):  
Life Cycle ◽  
Sexual Dimorphism ◽  
Intermediate Zone ◽  
Present Material ◽  
Central Chile ◽  
Strait Of Magellan ◽  
The Strait Of Magellan ◽  
History Of ◽  
Biogeographical Regions

This report supplements a series of earlier accounts on the hydrozoan fauna of Chile, and discusses 34 species of hydroidsand one hydromedusa. The available collection was gathered from three distinct biogeographical regions: the southernborder of the Peruvian Province around Punta de Choros, the southern Intermediate Zone around Corral, and the northernand southern parts of the Magellan Province, around Reloncaví Sound and in the Strait of Magellan, respectively. All thespecies are fully illustrated and, when necessary, data on the cnidome composition are provided. Six species, Haleciumannuliforme, Sertularella curvitheca, Sertularella mixta, Symplectoscyphus patagonicus, Halopteris plumosa, and Clytiareloncavia, are described as new. The gonothecae of Halecium fjordlandicum Galea, 2007, Symplectoscyphusmagellanicus (Marktanner-Turneretscher, 1890), and Campanularia hartlaubi (El Beshbeeshy, 2011) are described for thefirst time, while those of Kirchenpaueria curvata (Jäderholm, 1904) were rediscovered and are accurately redescribed.Morphological differences between C. hartlaubi and C. lennoxensis (Jäderholm, 1903), two species with similartrophosomes, are highlighted. Large, fertile specimens of Halecium pallens Jäderholm, 1904, as well as a female colonyof Hydractinia parvispina Hartlaub, 1905, allowed new redescriptions to be made. Due to insufficient taxonomicinformation on several species created more than a century ago, two Chilean records are doubtfully assigned toSertularella implexa (Allman, 1888) and Sertularella lagena Allman, 1876, respectively, the former represented by fertilespecimens, and thus allowing the first description of its gonothecae. The long history of the confused taxonomy of SouthAmerican "Symplectoscyphus subdichotomus (Kirchenpauer, 1884)" is now entirely settled. All the available records areconfidently assigned to the synonymy of Symplectoscyphus filiformis (Allman, 1888), whose sexual dimorphism ofgonothecae, first indicated by Totton (1930), is confirmed in light of the present material. Five species represent newrecords for the country: Staurocladia vallentini (Browne, 1902), Samuraia tabularasa Mangin, 1991, H. pallens,Sertularella blanconae El Beshbeeshy, 2011, and Symplectoscyphus paraglacialis El Beshbeeshy, 2011, the latter twobeing redescribed. Due to the scarcity of available material and the lack of gonophores of both sexes, six species ofEudendrium Ehrenberg, 1834 could be identified to genus only. Similarly, a species of Sertularella Gray, 1848 and twobelonging to Symplectoscyphus Marktanner-Turneretscher, 1890, are awaiting reliable identifications based on fertile specimens. A species of Clytia Lamouroux, 1812 could not be determined to species in the absence of life cycle studies.

scholarly journals Characterization of an Alsodes pehuenche breeding site in the Andes of central Chile

Herpetozoa ◽  
2020 ◽  
Vol 33 ◽  
pp. 21-26
Author(s):  
Alejandro Piñeiro ◽  
Pablo Fibla ◽  
Carlos López ◽  
Nelson Velásquez ◽  
Luis Pastenes
Keyword(s):  
Natural History ◽  
Geographical Distribution ◽  
Breeding Site ◽  
Physicochemical Characteristics ◽  
Mountain Range ◽  
Central Chile ◽  
The Andes ◽  
History Of ◽  
First Time

Alsodes pehuenche, an endemic anuran that inhabits the Andes of Argentina and Chile, is considered “Critically Endangered” due to its restricted geographical distribution and multiple potential threats that affect it. This study is about the natural history of A. pehuenche and the physicochemical characteristics of a breeding site located in the Maule mountain range of central Chile. Moreover, the finding of its clutches in Chilean territory is reported here for the first time. Finally, a description of the number and morphology of these eggs is provided.

scholarly journals Ages and cooling history of the Early Cretaceous Caleu pluton: testimony of a switch from a rifted to a compressional continental margin in central Chile

2005 ◽  
Vol 162 (2) ◽  
pp. 273-287 ◽  
Author(s):  
Miguel A. Parada ◽  
Gilbert Féraud ◽  
Francisco Fuentes ◽  
Luis Aguirre ◽  
Diego Morata ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Continental Margin ◽  
Cooling History ◽  
Central Chile ◽  
History Of

scholarly journals Mass wasting at the base of the south central Chilean continental margin: the Reloca Slide

2009 ◽  
Vol 22 ◽  
pp. 155-167 ◽  
Author(s):  
D. Völker ◽  
W. Weinrebe ◽  
J. H. Behrmann ◽  
J. Bialas ◽  
D. Klaeschen
Keyword(s):  
Seismic Reflection ◽  
Tsunami Generation ◽  
Mass Wasting ◽  
Gravity Core ◽  
Seismic Reflection Data ◽  
Central Chile ◽  
James Cook ◽  
Reflection Data ◽  
South Central ◽  
History Of

Abstract. Offshore south central Chile (35° S–42° S), the morphology of the lowermost continental slope and trench floor witnesses a voluminous submarine mass-wasting event. The blocky slide body deposited in the Chile Trench at 73°46´ W 35°35´ S was targeted for study during RRS JAMES COOK Cruise JC23 and termed Reloca Slide. Its size of about 24 km3, its steep and high headscarp, the spatial distribution of slide deposits and the cohesive nature of major slide blocks make it interesting to address the issue of tsunami generation. We have obtained seismic reflection data that partly reveal the internal structure of the slide body. Gravity core samples were retrieved that will allow the slide to be dated and linked to the history of sedimentation and slope stability along this particular segment of the Chilean convergent margin. At present we assume a Holocene age for the sliding event.

Early post-fire succession in a Nothofagus glauca forest in the Coastal Cordillera of south-central Chile

2002 ◽  
Vol 11 (2) ◽  
pp. 115 ◽  
Author(s):  
Creighton M. Litton ◽  
Rómulo Santelices
Keyword(s):  
Evolutionary History ◽  
Deciduous Species ◽  
Central Chile ◽  
Coastal Cordillera ◽  
South Central ◽  
History Of ◽  
Temperate Deciduous ◽  
Early Succession ◽  
In Fire

The temperate deciduous species Nothofagus glauca (Phil.) Krasser exhibits characteristics commonly found in fire-adapted vegetation, yet the role of fire in the evolutionary history of the vegetation in south-central Chile has not been well investigated. We examined the effects of a wildfire on early succession in a Nothofagus glauca forest in the Coastal Cordillera of south-central Chile by comparing data from a burned forest to the vegetation in an adjacent, unburned stand.

Myopa nebulosa sp. nov. and Myopa bozinovici sp. nov. (Diptera: Conopidae): New thick-headed flies from a threatened biodiversity hotspot in central Chile

Zootaxa ◽  
2020 ◽  
Vol 4780 (2) ◽  
pp. 291-306
Author(s):  
RODRIGO M. BARAHONA-SEGOVIA ◽  
MATÍAS BARCELÓ
Keyword(s):  
Mediterranean Ecosystems ◽  
Neotropical Region ◽  
Biodiversity Hotspot ◽  
South American ◽  
Museum Collections ◽  
South American Species ◽  
Central Chile ◽  
Neotropical Species ◽  
The World ◽  
History Of

Diptera is one of the most speciose groups within Insecta, but there are deep gaps in knowledge of the South American faunas. Conopidae, also known as thick-headed flies, inhabit many habitats around the world, and are particularly diverse in the Neotropical region. Despite this, southern South American species of this group are poorly known and many genera are under-represented in museum collections. Only four Neotropical species of Myopa are known, three from Mexico and one from Chile. In this study we describe two new species: Myopa nebulosa sp. nov. distributed from northern Chile to the Maule region of central Chile, and Myopa bozinovici sp. nov. from Mediterranean ecosystems of central Chile. We also re-describe the conspicuous species Myopa metallica Camras and provide an updated key to all Neotropical species of this genus. The natural history of these species is unknown. Myopa species are not abundant and their habitats may be threatened by land change use. 

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