Characteristics of three low grasslands with different rest periods

  • E. Cano Universidad Nacional de La Pampa, Facultad de Agronomía, Cátedra de Ecología Vegetal y Fitogeografía
  • E. Morici Universidad Nacional de La Pampa, Facultad de Agronomía, Cátedra de Ecología Vegetal y Fitogeografía
  • B. Fernández Universidad Nacional de La Pampa, Facultad de Agronomía, Cátedra de Ecología Vegetal y Fitogeografía
  • C. Chirino Universidad Nacional de La Pampa, Facultad de Agronomía, Cátedra de Ecología Vegetal y Fitogeografía

Keywords:

grassland, La Pampa

Abstract

In an upland region with short grassland in the Dpto Loventué- La Pampa (Lat-.36°50' S Long.65°18' W) we compared three areas-. Two of them were exclosures of 28 and 14 years; the third had a rest of twelve months every other year. The three communities were similar in floristic composition but different in the values of abundance-cover of their principal species. Vegetation cover had a maximum in the exclosures and a minimum in the area that had a rest of twelve months every other year. In the three areas the frequency of dominants and codominants species ranged among 90-100%. Standing crop reached 320 gMS/m2 in the oldest exclosure and 150 gMS/m2 in the area with a rest of twelve months every other year. Flower stalk numbers, culm lenght and crown diameter were great in the 14 years exclosure·.koeleria permollis a decreaser palatable specie was codominant only in the 28 years exclosure. Poa ligularis another decreaser desiderable specie codominated in the 14 years exclosure. In the area with a rest of twelve months every other year was dominant Piptochaetium.

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Published

2020-06-30

How to Cite

Cano, E., Morici, E., Fernández, B., & Chirino, C. (2020). Characteristics of three low grasslands with different rest periods. Semiárida, 5(2), 83–108. Retrieved from https://cerac.unlpam.edu.ar/ojs/index.php/semiarida/article/view/5027

Issue

Section

Artículos Científicos y Técnicos