Augspurger, C. K. & Kelly, C. K. Pathogen mortality of tropical tree seedlings: experimental studies of the effects of dispersal distance, seedling density, and light conditions.
An appropriate number and height of seedlings is necessary to consider a woodland opening to have sufficient stocking, or seedling density.
Moreover, seedling density was extremely low in all aspects, demonstrating the prevailing strong environmental constraints of the site.
During three years, we recorded seedling density of perennial species in four alternative degradation states in grass-shrubby steppes from northwestern Patagonia.
Wild seedlings of Avicennia started colonizing the fenced area after 1.5 years of fence construction and regenerated seedling density varied from 2300 seedlings/ha in to 7100 seedlings/ha after 3 years.
In the scrub, seedling density was negatively related to distance from the three nearest adult plants in the clearings, and positively related to adult plant size beneath the adult Lavandula plants.
In addition, seedling density of Populus spp., B. papyrifera, P. mariana, P. glauca and A. balsamea were positively affected by build up index and, except Populus spp., their density increased with age of burn.
On these selected habitats, seedling density diminished with increasing distance from the seed source.
Moreover, seedling density and species diversity were higher under the inside canopies than outside tree canopies.
First, to assess dispersal limitation in American beech, we analyzed seedling density as a function of adult conspecific abundance.
As predicted, in our hypothesis, seedling density and species diversity were higher under the inside tree canopies than outside canopies.
