Ecological Aspects of the Distribution of C4 Grasses in Selected Habitats of Costa Rica

  • Chazdon R
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A distributional study of 65 grass species in seven habitats of Costa Rica was done to determine the differential distribution of C3 and C4 grasses and their adaptations to climatic conditions of rainfall, temperature, and sunlight. The highest proportion of C4 grasses were found in lowland areas with prevailing conditions of high temperatures, high insolation, and water stress, whereas the majority of C3 species were found in high altitude environments with conditions of lower temperatures, lower atmospheric O2 concentration, and no water stress.

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  • Robin L Chazdon

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