Density dependence in two understory tree species in a neotropical forest
dc.contributor.author | Condit, Richard S. | |
dc.contributor.author | Hubbell, Stephen P. | |
dc.contributor.author | Foster, Robin B. | |
dc.date.accessioned | 2013-01-02T19:38:43Z | |
dc.date.available | 2013-01-02T19:38:43Z | |
dc.date.issued | 1994 | |
dc.description.abstract | Density dependence was examined in two species of neotropical treelets, Faramea occidentalis and Desmopsis panamensis, in a 50-ha plot on Barro Colorado Island in Panama. Survival and growth probability of plants larger than 1 cm dbh (diameter at breast height), and recruitment into the 1-cm class, were assessed as a function of the number of conspecific neighbors in various distance and size classes. Density-dependent effects on survival and growth were strong in Faramea. Performance of 1-8 cm dbh plants declined with increasing numbers of adult neighbors within 1 m, 1-2 m, and 2-4 m, but neighbors at 4-6 m had no effect. Performance also declined with increasing numbers of juvenile neighbors lt 4 cm dbh, but the effect was less pronounced. Saplings of Faramea grew poorly in areas of high juvenile density within 30 m, independent of the effects caused by neighbors within 4 m. In contrast to Faramea, Desmopsis showed no density dependence in survival nor in growth. For recruitment, however, the two species showed similar patterns: recruit density was lower in regions with an adult conspecific within 1 or 2 m distance, but higher in regions with high densities of adult or juvenile conspecifics between 2 and 30-60 m. Desmopsis must have suffered density-dependent effects at stages lt 1 cm dbh, but the effect vanished by the 1 cm dbh stage. In Faramea, strong neighborhood effects were evident in all size classes lt 8 cm dbh. | |
dc.format.extent | 671–680 | |
dc.identifier | 0012-9658 | |
dc.identifier.citation | Condit, Richard S., Hubbell, Stephen P., and Foster, Robin B. 1994. "<a href="https://repository.si.edu/handle/10088/19454">Density dependence in two understory tree species in a neotropical forest</a>." <em>Ecology</em>, 75, (3) 671–680. | |
dc.identifier.issn | 0012-9658 | |
dc.identifier.uri | http://hdl.handle.net/10088/19454 | |
dc.relation.ispartof | Ecology 75 (3) | |
dc.title | Density dependence in two understory tree species in a neotropical forest | |
dc.type | article | |
sro.description.unit | STRI | |
sro.identifier.itemID | 104181 | |
sro.identifier.refworksID | 37341 | |
sro.identifier.url | https://repository.si.edu/handle/10088/19454 |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- stri_1994_Density_dependence_in_two_and_Condit_Richard.pdf
- Size:
- 1.68 MB
- Format:
- Adobe Portable Document Format