Individual study: Effects of selective logging on the abundance, regeneration and short-term survival of Caryocar costaricense (Caryocaceae) and Peltogyne purpurea (Caesalpinaceae), two endemic timber species of southern Central America
Lobo J., Barrantes G., Castillo M., Quesada R., Maldonado T., Fuchs E.J., Solís S. & Quesada M. (2007) Effects of selective logging on the abundance, regeneration and short-term survival of Caryocar costaricense (Caryocaceae) and Peltogyne purpurea (Caesalpinaceae), two endemic timber species of southern Central America. Forest ecology and management, 245, 88-95
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Log/remove trees within forests: effects on young trees
A replicated, controlled study in 1997-2002 in tropical rain forest in Costa Rica (Lobo et al. 2007) found that selective logging decreased the density of seedlings and small juvenile trees but increased the number of larger trees. For Caryocar costaricense, the density (individuals/ha) of seedlings (<50 cm tall) (logged: 3.1; unlogged: 4.5) and small juveniles (<2 cm diameter at breast height) (logged: 5.2; unlogged: 8.0) was higher in unlogged plots. In contrast, the density of large juveniles (2-10 cm diameter at breast height) was higher in logged plots (logged: 4.3; unlogged: 2.4). For purpleheart Peltogyne purpurea, the density of seedlings (logged: 208.8; unlogged: 511.2) was higher in unlogged plots, while the density did not differe for small (logged: 2.2; unlogged: 3.1) and large juveniles (logged: 2.6; unlogged: 2.2). Data were collected in 2002 in three logged (selective logging in 1997-1998) and three unlogged plots (100 × 30 m) in each of 11 sites.