We were interested in the role of arbuscular mycorrhiza (AM) in the competition between plants of different sizes. A pot experiment of factorial design was established, in which AM root colonization ...
PREMISE OF THE STUDY:Ecologists generally agree that weak interspecific competition for light contributes to high plant species diversity in ecosystems with nutrient-poor soils. However, the role of ...
Halfway down the east slope of the Andes in Ecuador, sightings of the luminous yellow beaks of the chestnut-mandibled toucan are abruptly replaced by the colorful beaks of the white-throated toucan.
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