Results 21 to 30 of about 354,890 (303)

Progress in South America Dendrochronology [PDF]

open access: yes, 2002
South America extends from 11°N to 62°S. Major boundaries such as the Andes on the western side of the continent and the land mass in the tropics create north-south and west-east variations in climate and ecosystems.
Boninsegna, Jose Armando
core   +1 more source

Arrival of Paleo-Indians to the Southern Cone of South America: New Clues from Mitogenomes [PDF]

open access: yes, 2012
With analyses of entire mitogenomes, studies of Native American mitochondrial DNA (mtDNA) variation have entered the final phase of phylogenetic refinement: the dissection of the founding haplogroups into clades that arose in America during and after ...
Achilli, Alessandro   +14 more
core   +4 more sources

Parasites of the green-backed firecrown (Sephanoides sephanoides) in Chile

open access: yesRevista Mexicana de Biodiversidad, 2011
Gastrointestinal and external parasites from 12 Green-backed Firecrown (Sephanoides sephaniodes Molina 1782) were collected between January 2004 to December 2008 from the Biobío Region of south-central Chile and Santiago of central Chile.
Daniel Alfonso González-Acuña   +7 more
doaj   +1 more source

Implications of farmers' seed exchanges for on-farm conservation of quinoa, as revealed by its genetic diversity in Chile [PDF]

open access: yes, 2012
Quinoa cultivation in Chile presents an ancient and active complex of geographic, climatic, social and cultural interactions that has determined its current biodiversity in the three main growing zones (north, central and south).
Bazile, Didier   +3 more
core   +1 more source

The late Pleistocene Pilauco site, Osorno, south-central Chile

open access: yesQuaternary International, 2013
Abstract Paleontological and archaeological sites have frequently been found in open locations of the Intermediate Depression of south-central Chile. This paper presents the results of two field sampling seasons carried out at the Pilauco Site (ca. 39°S) and compares them with those of three well known sites in Chile: Quereo, Tagua-Tagua and Monte ...
Pino, Mario   +3 more
openaire   +4 more sources

Future Scenarios for Land Use in Chile: Identifying Drivers of Change and Impacts over Protected Area System

open access: yesLand, 2021
Chile is a country that depends on the extraction and export of its natural resources. This phenomenon has exacerbated different processes of transformation and disturbance of natural and human ecosystems.
César Benavidez-Silva   +2 more
doaj   +1 more source

The Andes mountain range uplift as a vicariant event in the Pimeliinae (Coleoptera: Tenebrionidae) in southern South America [PDF]

open access: yes, 2006
The Andes mountain range extends over 8500 km along the Pacific coast of South America. Its medium altitude is 3500 m, reaching more than 6000 m at different latitudes. The uplift of the Andes  split arid habitats creating very diverse ecosystems on both
Flores, Gustavo Ernesto   +1 more
core   +1 more source

Cercarial dermatitis and lake eutrophication in south-central Chile

open access: yesEpidemiology and Infection, 2007
SUMMARYCercarial dermatitis is caused by exposure to the cercariae of schistosome species which have birds or mammals as their definitive hosts. A public alarm was raised in the summer of 2004 when this parasitic disease was observed for the first time in south-central Chile at Laguna Chica de San Pedro (36° 51″ S, 73° 05″ W).
C, Valdovinos, C, Balboa
openaire   +3 more sources

European starlings expand into Patagonia. Time for action

open access: yesGlobal Ecology and Conservation, 2022
European starlings (Sturnus vulgaris) were introduced ca. 40 years ago to South America, where they naturalized to central and northern Argentina, now reaching some neighboring countries.
Valeria Ojeda   +4 more
doaj   +1 more source

Flaxseed Response To N, P, and K Fertilization in South Central Chile [PDF]

open access: yesChilean journal of agricultural research, 2009
Flaxseed (Linum usitatissimum L.) is a minor crop in Chile. There is interest to increase the number of crops on the current rotation in South Central Chile and also to increase oilseed feedstocks for salmon feed. There is little information published about seed yield and oil content response to N, P, and K fertilizers on flaxseed in Chile.
Berti, Marisol M.   +3 more
openaire   +4 more sources

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