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Registros recuperados: 6
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A dichotomous species of Codium (Bryopsidales, Chlorophyta) is colonizing northern Chile RChHN
GONZÁLEZ,ALEJANDRA; SANTELICES,BERNABÉ.
In late 2001 and early 2002, a dichotomous species of Codium appeared colonizing the low intertidal and shallow subtidal bottoms of Caldera Bay, northern Chile (27° 03’ S, 70° 51’ W). Due to the ecological and economic impact the species is having in Caldera Bay and its potential spread along the Chilean coastline, we studied the taxonomic identity of the species and examined its relationships with other dichotomous species of Codium reported for temperate Pacific South America. Morphological analyses suggest that the seaweeds from Caldera Bay belong to Codium fragile (Suringar) Hariot. Not only is there strong agreement in internal and external morphological characters, but among all the species reported for Peru and Chile, this is the only one exhibiting...
Tipo: Journal article Palavras-chave: Introduced species; Seaweed; Northern Chile.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000200008
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Microevolution of human archaic groups of Arica, northern Chile, and its genetic contribution to populations from the Formative Period RChHN
VARELA,HÉCTOR HUGO; COCILOVO,JOSÉ ALBERTO; SANTORO,CALOGERO M; ROTHHAMMER,FRANCISCO.
The microevolution of the archaic populations from Chile's northern coast and its morphological contribution to Formative period groups was studied. The sample comprised 181 individuals belonging to two Archaic (Morro-Uhle and Morro 1-1/6) and one Formative (Playa Miller-7 [Plm-7]) series of the coast and one sample from the Formative (Alto Ramírez) exhumed at the Azapa Valley. A total of 29 metric variables of the cranium were analyzed. Biological variability was assessed using discriminant analysis and Mahalanobis' D² distance stadistic (MDS). Population structure was inferred using a method based on quantitative genetic theory that predicts a lineal relationship between average within-group phenotypic variance and group distance to the population...
Tipo: Journal article Palavras-chave: Quantitative cranial traits; Late archaic; Formative; Northern Chile.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200005
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Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile RChHN
CONTRERAS,HERALDO; JARAMILLO,EDUARDO; QUIJON,PEDRO.
Sediment samplings were carried across the intertidal of the beach at Hornitos, northern Chile (22°26´S) during August and November 1996 and March, July and November 1997 for a study of the reproductive and population biology of Emerita analoga (Stimpson) (Decapoda, Anomura) in a region of the Chilean coast characterized by persistent upwelling. The highest abundances of E. analoga occurred during March and December 1997. During November 1996, March and December 1997, the highest abundances occurred below the effluent line, while in July 1996 and August 1997, most of the stages of E. analoga occurred in higher abundances above the effluent line. Ovigerous females were recorded over the entire study period. Juveniles were also present during all sampling...
Tipo: Journal article Palavras-chave: Emerita analoga; Sandy beach; Northern Chile.
Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400013
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Notes on Gentianella tarapacana (Gilg) T.N.Ho & S.W.Liu (Gentianaceae), endemic to the Chilean Altiplano Gayana Botánica
PFANZELT,SIMON; GARCÍA,CAROLINA.
Over a century after its first collection, Gentianella tarapacana (Gilg) T.N. Ho & S.W. Liu (Gentianaceae) was rediscovered at its type locality Amincha (Region ofAntofagasta, Province El Loa; 21°12'S; 68°20'W, 3850 m). The species is endemic to the Altiplano of northern Chile. It grows in wetland habitats. We designate a lectotype and provide a detailed description of the species, as well as an illustration and floristic information about its habitat at the type locality.
Tipo: Journal article Palavras-chave: Northern Chile; Central Andes; Andean wetlands; Lectotypification.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200008
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Taxonomic identification of appendicularians collected in the epipelagic waters off northern Chile (Tunicata, Appendicularia) RChHN
ARAVENA,GUILLERMO; PALMA,SERGIO.
This work provides a first taxonomic description of appendicularians collected during September and August of 1995 in the north coast of Chile (18º23'-31º00' S). Fifteen species were identified. They belong to the families Oikopleuridae (Oikopleura longicauda, O. cophocerca, O. dioica, O. rufescens, O. fusiformis, O. albicans, O. gracilis and Megalocercus abyssorum), and Fritillariidae (Fritillaria pellucida typica, F. pellucida omani, F. haplostoma F. tenella, F. formica digitata, F. venusta and F. fraudax). All the species are first records for waters of northern Chile, thus broadening their previous distribution in the southeast Pacific. The most abundant species were Oikopleura longicauda (56.1 %), O. gracilis (10.4 %), Fritillaria pellucida typica...
Tipo: Journal article Palavras-chave: Appendicularia; Larvaceans; Taxonomy; New record; Northern Chile.
Ano: 2002 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000200005
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USING SATELLITE TECHNOLOGY IMPROVE CHILEAN PURSEINE FISHING FLEET Gayana
Yáñez,E.; Silva,C.; Nieto,K.; Barbieri,M.A.; Martínez,G..
A work of gathering historical fishing (catch, fishing effort, CPUE, characteristics and operation of purseiner fleet) and satellite (NOAA, SeaStar and SeaWind) database of northern Chile, and fishing and oceanographic in situ sampling for validation purpose is made. With this information and the use of geographical information system (GIS) the distribution of pelagic resources and the associated environmental conditions (sea surface temperature, thermal gradients, chlorophyll concentration and wind fields) are analysed in order to develop a probable fishing ground (PFG) index prediction model. A PFG model of anchovy (Engraulins ringens) is operative for the northern Chile. The impact of the use of PFG charts was evaluated analyzing the operational...
Tipo: Journal article Palavras-chave: Pelagic fisheries; Northern Chile; Remote sensing; GIS; PFG index and model.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300048
Registros recuperados: 6
Primeira ... 1 ... Última
 

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