The Importance of legumes in the early stages of plant succesion in a burnt pine forest of Albacete province (Spain)
Abstract
The role of legumes in the natural regeneration of a burnt pine forests of Albacete province has been studied, recording their frequency and cover in permanent plots in the course of the first five post-fire years. Comparisons with unburnt control plots showed that fire induced a high appearance of annual legumes during the first two years. Legumes were the predominant plant family regarding species number and cover in the first five post-fire years. Scorpiurus muricatus and Psoralea bituminosa were the most abundant species in the first spring after fire, reaching their peak population size during this period. A remarkable second group of species (Trifolium sp. pl., Ornithopus compressus) showed a maximal population size two years after the fire. The abundance and cover of both species groups decreased drastically between the third and fifth year after fire.
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