What factors contribute to the low nutritional quality of vegetation in the puna?
Answer
Soil quality, intense UV radiation, and short growing seasons
The Andean high plains, located at elevations between roughly 3,200 and 4,800 meters, present a challenging environment for plant life. Vegetation in these regions is inherently lower in essential nutrients compared to temperate grasslands. This nutritional scarcity is caused by a combination of suboptimal soil quality, the stress placed on plants by intense UV radiation, and the short duration of the growing seasons, all of which limit the development of energy-dense foliage.
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