Araucaria

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Related to Araucarias: bunya bunya tree, Araucariaceae

araucaria

[‚ar‚ō′kä·rē·ə]
(botany)
A primitive conifer of the genus Araucaria with broad leathery leaves, large cones, and edible seeds that is indigenous to South America and Australia.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Araucaria

 

a genus of coniferous trees of the family Araucariaceae. Araucaria trees are tall (up to 50–60 and even 90 m) and have flat needles. The cones are of two types—that is, rounded (female) with a diameter of up to 20 cm and elongated (male), up to 15–20 cm long. There are about 18 species in Australia and on the islands of New Guinea, New Caledonia, and Norfolk and two species in America. The seeds are for the most part edible. The wood of the araucaria is used as building material and for various articles. Some species (A. brasiliana, A. araucana, and others) are grown for decoration on the Black Sea coast of the Caucasus and the Southern Crimean Shore and also are grown as houseplants and in greenhouses (A. excelsa, A. bidwilli, and others).

REFERENCE

Takhtadzhian, A. L. Vysshie rasteniia, vol. 1. Moscow-Leningrad, 1956.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
A porcentagem de araucarias competidoras mostrou correlacao negativa, com indice de correlacao igual a - 0,278, sobre o incremento em diametro das araucarias centrais.
Por meio da analise de covariancia, foi possivel verificar que nao houve interacao significativa entre as classes de diametro com o diametro (Classedap*dap) (Tabela 3), indicando que as classes de diametro apresentaram a mesma inclinacao em relacao ao diametro das araucarias.
Tendo em vista a carencia de estudos que vise caracterizar a estrutura do [d.sub.q] e [d.sub.copa], o objetivo deste estudo e analisar qual FDP se ajusta melhor a essas variaveis dendrometricas em um plantio florestal (Pinus taeda) e um fragmento de floresta natural (Araucaria angustifolia), e tambem analisar o efeito dessas variaveis nas respectivas estruturas florestais.
As regioes sudoeste e sul do Estado, assim como grande parte da regiao sul do Brasil, ja foram ocupadas amplamente pela Floresta Ombrofila Mista--FOM (ITCF, 1991) ou Floresta com Araucaria. No seculo XX, as florestas de araucaria compunham cerca de 40% da cobertura vegetal dos estados do sul do Brasil.
Araucaria seedlings with ages between 6 months and 5 years produced under nursery conditions in Curitiba were well colonized by AMF (rates varying from almost 50 to over 85%; Figure 1) and contained an abundant number of mycorrhizal spores (varying from 344 to 676; Table 2).
SSF is a conservation unit twice larger than PMA (not taking in account that SSF is surrounded by several other fragments of Araucaria forest in private properties, which must double or even triple the total size of the area, and PMA is surrounded by crop plantations and Guarapuava city limits) and this is probably driving the high rates of migrants between these areas (e.g., Schiffer et al., 2007).
The Mixed Ombrophylous Forest (with predominance of Araucaria angustifolia [Bertol.] Kuntze, being therefore also known as Araucaria Forest) is the main phytophysiognomy of the Brazilian southern region and is one of several physiognomies that belong to the Atlantic Forest biome, one of the hottest hotspots of biodiversity in the planet (Myers et al., 2000).
Alem de testemunhar as alteracoes da natureza no Estado, Maack foi capaz de teorizar, pela primeira vez, as origens da vegetacao original do dominio das Araucarias, atribuindo as alteracoes climaticas do Quaternario um papel de suma importancia para explicar a total oposicao das facies de paisagens florestais e abertas (MAACK, 1981, p.
Conclui-se que o efeito de borda representou uma importante fonte de alteracao do componente arboreo para um fragmento de Floresta com Araucarias no Sul do Brasil, com um historico de fragmentacao e perturbacoes antropicas cronicas.
O grupo de araucarias crescendo livre de competicao e com competicao na floresta cobriu uma larga amplitude de distribuicao diametrica, entre 14,5 a 59,2 cm em arvores de crescimento livre e entre 9,9 a 97,1 cm, em arvores sob competicao na floresta.
El estudio se realizo en bosques de araucaria situados en la comuna de Lonquimay, Region de la Araucania (71-72[degrees]O y 38-39[degrees]S).
El genero Araucaria esta constituido por 19 especies, todas distribuidas desde Guinea hasta Australia.