Vol. 10 No. 2 (2000)

Articles

• Volumen 10 (2)

  Ecología Austral

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• Effects of clayish and sandy soils on the growth of Prosopis argentina and P. alpataco seedlings

  Pablo E. Villagra, Juan B. Cavagnaro

  113-121

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• Seed scarification requirements in native and alien species

  Federico Colombo Speroni, Marta Leonor De Viana

  123-131

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• Nitrogen fertilizer application and competitive balance between spring wheat (Triticum aestivum L.) and volunteer oilseed rape (Brassica napus L.)

  Antonio C. Guglielmini, Emilio H. Satorre, Federico Varela, Diego Miguens

  133-142

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• Effects of Lotus tenuis density upon the emergence, survival and cover of Cirsium vulgare

  Elizabeth Ortega, Pablo Vergara, Osvaldo Vignolio, Pedro Laterra

  143-149

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• Effects of ponderosa pine plantations on steppe microsites of northwestern Patagonia

  Estela Raffaele, Tomás Schlichter

  151-158

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• Opportunistic or selective? Plasticity in the diet of the leaf-cutting ant Acromyrmex lobicornis in NW Patagonia

  Claudia Franze, Alejandro G. Farji-Brener

  159-168

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• Summer phytoplankton structure and dynamics in an Antarctic lake (Potter Peninsula, South Shetland Islands)

  Fernando Unrein

  169-179

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