Spatial patterns of a tropical tree species growing under an eucalyptus plantation in South-East Brazil

Higuchi, P.; Silva, A. C.; Louzada, J. N. C.; Machado, E. L. M.
May 2010
Brazilian Journal of Biology;May2010, Vol. 70 Issue 2, p271
Academic Journal
The objectives of this study were to evaluate the influence of propagules source and the implication of tree size class on the spatial pattern of Xylopia brasiliensis Spreng. individuals growing under the canopy of an experimental plantation of eucalyptus. To this end, all individuals of Xylopia brasiliensis with diameter at soil height (dsh) ≥ 1 cm were mapped in the understory of a 3.16 ha Eucalyptus spp. and Corymbia spp. plantation, located in the municipality of Lavras, SE Brazil. The largest nearby mature tree of X. brasiliensis was considered as the propagules source. Linear regressions were used to assess the influence of the distance of propagules source on the population parameters (density, basal area and height). The spatial pattern of trees was assessed through the Ripley K function. The overall pattern showed that the propagules source distance had strong influence over spatial distribution of trees, mainly the small ones, indicating that the closer the distance from the propagules source, the higher the tree density and the lower the mean tree height. The population showed different spatial distribution patterns according to the spatial scale and diameter class considered. While small trees tended to be aggregated up to around 80 m, the largest individuals were randomly distributed in the area. A plausible explanation for observed patterns might be limited seed rain and intra-population competition.


Related Articles

  • The effect of age and sample position on eucalypt tree-ring width series. Brookhouse, Matthew; Brack, Cris // Canadian Journal of Forest Research;May2008, Vol. 38 Issue 5, p1144 

    In this study, we examine within-tree variance in proportionate tree-ring width (prw) and correlation between radii (rwt), samples (rbh), and trees (rbt) in four eucalypt species common throughout eastern Victoria, Australia. In all species and sites studied, rwt and rbh differ significantly...

  • Sawing and grade recovery of 25-year-old Eucalyptus fastigata, E. globoidea, E. muelleriana and E. pilularis. Jones, Trevor G.; McConnochie, Ruth M.; Shelbourne, Tony; Low, Charlie B. // New Zealand Journal of Forestry Science (New Zealand Forest Rese;2010, Vol. 40, p19 

    The processing characteristics of 25-year-old Eucalyptus fastigata Deane et Maiden, E. globoidea Blakely, E. muelleriana Howitt and E. pilularis Sm. from Rotoehu Forest, New Zealand, were evaluated to determine if these species could be used to produce high-quality timber on shorter rotations....

  • NUMBERS GAME: Into the Woods.  // Audubon;Mar/Apr2011, Vol. 113 Issue 2, p26 

    The article presents several international statistics related to nature as of March 2011 including the percentage of the world covered by forest, the total space covered by forests worldwide and the number of tree species all over the world.

  • Eucalypt feature.  // New Zealand Tree Grower;Aug2010, Vol. 31 Issue 3, p20 

    The article discusses various reports published within the issue including one about the growth and value of planting eucalypt species in New Zealand by Denis Hocking and another about the Dryland Forests Initiative.

  • Tree-size diversity between single- and mixed-species stands in three forest types in western Canada. Varga, Pàl; Chen, Han Y. H.; Klinka, Karel // Canadian Journal of Forest Research;Mar2005, Vol. 35 Issue 3, p593 

    Mixed-species stands are hypothesized to be more structurally diverse because of inherent differences in growth rates between tree species. We investigated three combinations of even-aged, single- and mixed-species coniferous stands in western Canada: (i) shade-tolerant western hemlock (Tsuga...

  • Twenty years of community dynamics in a mixed conifer – broad-leaved forest under a selection system in northern Japan. Yoshida, Toshiya; Noguchi, Mahoko; Akibayashi, Yukio; Noda, Masato; Kadomatsu, Masahiko; Sasa, Kaichiro // Canadian Journal of Forest Research;Jun2006, Vol. 36 Issue 6, p1363 

    Single-tree selection has been employed widely in northern Japanese mixed forests, but management-induced changes in forests are not well understood. This study examined demographic parameters of major tree species during a 20-year study of a 68 ha stand in which single-tree selection has been...

  • Potential Roles of Fish, Birds, and Water in Swamp Privet (Forestiera acuminata) Seed Dispersal. Adams, Susan B.; Hamel, Paul B.; Connor, Kristina; Burke, Bryce; Gardiner, Emile S.; Wise, David // Southeastern Naturalist;2007, Vol. 6 Issue 4, p669 

    Forestiera acuminata (swamp privet) is a common wetland shrub/small tree native to the southeastern United States. We examined several possible dispersal avenues for the plant. We tested germination of seeds exposed to various treatments, including passage through Ictalurus punctatus (Channel...

  • Community Composition and Structural Changes in a Managed Illinois Ozark Hills Forest. Ozier, Trevor B.; Groninger, John W.; Ruffner, Charles M. // American Midland Naturalist;Apr2006, Vol. 155 Issue 2, p253 

    Forest stand dynamics were evaluated in a previously managed Quercus-Carya-dominated forest inventoried in 1980 and 2000, a period during which all active forest rnanagement was suspended and fire suppression was complete. The diameter distribution superficially resembled a stable unevenaged...

  • golden cascades. valder, peter // Burke's Backyard;Sep2011, p32 

    The article offers information on Laburnums, which are small deciduous trees, which are about 8 meter tall and have yellow pea-shaped flowers. It is reported that, there are two species of Laburnum, which are, L. anagyroides and L. alpinum, and they are native to woodlands in the mountains of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics