Litter Dynamics along Stream, Riparian and Upslope Areas Following HurricaneHugo, Luquillo Experimental Forest, Puerto Rico

摘要

Litterfall (fine and coarse) due to Hurricane Hugo and subsequent fine annuallitterfall inputs (1, 2 and 5 yr after Hugo) were determined for two sites (El Verde and Bisley) in the Luquillo Experimental Forest in Puerto Rico. Litter transfers into streams, riparian, and upslope areas were determined within each catchment. The recovery rate of aboveground fine litterfall (leaf, fine wood < 1 cm diameter, and other miscellaneous inputs) to predisturbance levels were determined 1, 2, and 5 yr after Hurricane Hugo. The amount of total litter transfers and their individual components into the riparian and upslope areas due to Hurricane Hugo varied significantly by catchments within the Liquillo Experimental forest. Differential decay rates contributed to the relative importance of fine and coarse litter inputs. The recovery of the aboveground litterfall to pre-hurricane levels after 5 yr varied by topographic location (streams had the slowest recovery, upslope areas the highest) and catchment.