An in situ study of Magnolia dealbata Zucc in Veracruz State: An endangered endemic tree of Mexico

Magnolia dealbata Zucc. is an endangered species as a result of habitat destruction. A population in central Veracruz was studied to determine in which of two disturbed habitats (secondary succession forest and grassland) where M. dealbata grows the tree showed better survival. Its spatial distribution was recorded from the two habitats. Density and productivity were recorded over a period of 1 year, and spatial distribution was found to be non-random at p<0.001 for both habitats. The scales of pattern detected were inferred to be caused by gravity-dispersed seeds germinating close to the mother trees. A higher number of individuals, with higher flower and fruit production, was recorded in the secondary succession forest habitat, and it appears that M. dealbata has also adapted, but to a lesser extent, to pasture-land habitats. Overall natural regeneration from seed is considered low, and its long-term survival could be assured in the secondary succession habitat providing clear cutting is not practiced.