TY - JOUR
T1 - Spatial distribution and environmental preferences of the piassaba palm Aphandra natalia (Arecaceae) along the Pastaza and Urituyacu rivers in Peru
AU - Boll, Thomas
AU - Svenning, Jens Christian
AU - Vormisto, Jaana
AU - Normand, Signe
AU - Grández, César
AU - Balslev, Henrik
N1 - Funding Information:
We thank Guillermo Criollo for assistance in the field, the villagers in Sungachi, Velasco, Reforma and Guineal for their hospitality, and Flemming Nørgaard for making the map ( Fig. 1 ). This study was funded by a grant from the Danida Research Council to Henrik Balslev (104.Dan.8-764). The participation of Signe Normand and Thomas Boll was made possible by grants from WWF-Novo Nordisk Biodiversity Fund (project no. 47) and the Faculty of Science, University of Aarhus. Our work on factors controlling biodiversity in the western Amazon is supported by a grant from the Danish Natural Science Research Council to Henrik Balslev (21-01-0617). Jaana Vormisto was supported by a EU Marie Curie Fellowship (EUK2-CT-2001-50013) and Jens-Christian Svenning by a Steno postdoctoral stipend from the Danish Natural Science Research Council (21-01-0415).
PY - 2005/7/18
Y1 - 2005/7/18
N2 - Aphandra natalia (Balslev and Henderson) Barfod, an economically important fibre producing palm, is common in rainforest on low terraces along the Pastaza and Urituyacu rivers in Amazonian Peru. The aim of this study was to investigate the spatial distribution and environmental preferences of Aphandra in old-growth terrace forest to which it is limited in this region. Densities of immature and mature individuals were 507 ± 212 (S.D.) ha-1 and 19 ± 8 ha-1, respectively, in 11 (5 × 500 m) transects placed in old growth terrace forest near four villages and 739 ± 188 ha-1 and 96 ± 49 ha-1, respectively, in six irregular transects placed in what the local villagers considered dense Aphandra stands. We examined environmental and spatial correlates of Aphandra occurrences using stepwise multiple autologistic regressions. Site, soil moisture, slope inclination, and topographic position influenced the spatial distribution of Aphandra. Furthermore, the distribution was strongly clumped, independently of environmental factors, with particularly the concentration of immature individuals around adults pointing to dispersal limitation as the likely causal mechanism.
AB - Aphandra natalia (Balslev and Henderson) Barfod, an economically important fibre producing palm, is common in rainforest on low terraces along the Pastaza and Urituyacu rivers in Amazonian Peru. The aim of this study was to investigate the spatial distribution and environmental preferences of Aphandra in old-growth terrace forest to which it is limited in this region. Densities of immature and mature individuals were 507 ± 212 (S.D.) ha-1 and 19 ± 8 ha-1, respectively, in 11 (5 × 500 m) transects placed in old growth terrace forest near four villages and 739 ± 188 ha-1 and 96 ± 49 ha-1, respectively, in six irregular transects placed in what the local villagers considered dense Aphandra stands. We examined environmental and spatial correlates of Aphandra occurrences using stepwise multiple autologistic regressions. Site, soil moisture, slope inclination, and topographic position influenced the spatial distribution of Aphandra. Furthermore, the distribution was strongly clumped, independently of environmental factors, with particularly the concentration of immature individuals around adults pointing to dispersal limitation as the likely causal mechanism.
KW - Dispersal limitation
KW - Ecological sustainability
KW - Extractivism
KW - Fibre plants
KW - Non-timber forest products
KW - Palms
KW - Recruitment
KW - Resource availability
KW - Tropical rainforest
UR - http://www.scopus.com/inward/record.url?scp=20544444998&partnerID=8YFLogxK
U2 - 10.1016/j.foreco.2005.03.020
DO - 10.1016/j.foreco.2005.03.020
M3 - Article
AN - SCOPUS:20544444998
SN - 0378-1127
VL - 213
SP - 175
EP - 183
JO - Forest Ecology and Management
JF - Forest Ecology and Management
IS - 1-3
ER -