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Liana Tree species associations in a Bolivian dry forest

Liana Tree species associations in a Bolivian dry forest,LAURA E. CARSE,TODD S. FREDERICKSEN,JUAN CARLOS LICONA

Liana Tree species associations in a Bolivian dry forest   (Citations: 12)
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Associations between tree species and degree of woody liana colonization were identified and the mechanisms explaining these relationships were investigated in a dry forest in eastern Bolivia. For 3158 individual trees >20 cm in diameter representing 72 tree species, 77% had at least 1 liana. Of the total number of trees colonized by lianas, 35% of trees had lia- nas totally covering their crowns, 37% had lianas within the crowns but not covering them, and 28% had lianas only on their boles. Based on natural tree species abundances, the tree species Anadenanthera colubrina and Attalea phalerata had significantly lower colonization rates than expected, whereas Neea hermaphrodita was the only species having significantly more liana- colonized individuals than expected. Ranks were assigned for each tree species according to morphological and physiological features thought to facilitate or inhibit liana establishment (shedding of branches or large branch like leaves, rate of bark exfoliation, bark texture, stem flexibility, and branch-free bole height) in an attempt to explain relative differences in liana co- lonization among species. Only shedding of branches or large compound leaves was negatively correlated with the proportion of liana-infested trees. Resumen: Se establecieron relaciones entre especies de árboles y grado de colonización por bejucos, y se investigaron los mecanismos que explican dichas relaciones en un bosque seco del oriente de Bolivia. Para 3158 árboles de diámetro mayor a 20 cm, representando a 72 especies, la tasa general de colonización por bejucos fue de 77%. De este porcentaje, 35% corresponde a bejucos que cubrían totalmente las copas, 37% a bejucos sobre las copas, pero sin cubrirlas, y 28% a bejucos solo en el fuste. En general, no se hallaron relaciones marcadas, negativas o po- sitivas, entre las tasas de infestación por bejucos y las especies de árboles. Sobre la base de los datos de abundancia de árboles y las tasas de infestación por bejucos, las especies Anadenan- thera colubrina y Attalea phalerata mostraron tasas de colonización significativamente me- mores a las previstas, mientras que Neea hermaphrodita fue la única especie con una tasa de colonización significativamente mayor a la esperada. Se asignaron rangos a cada especie de árbol, de acuerdo a rasgos morfológicos y fisiológicos que se considera podrían facilitar o inhibir el establecimiento de bejucos (pérdida de ramas inferiors, exfoliación y textura de la corteza, flexibilidad de los árboles, y altura del fuste exento de ramas), con el fin de explicar las diferen- cias relativas entre especies, con respecto a la colonización por bejucos. Se determinó que la pérdida de ramas o hojas largas y compuestas está correlacionada con el impedimento del avance de bejucos.
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    • ...Various studies on the distribution of lianas on trees have reported that the tree species attributes such as branch shedding (Clark & Clark 1990; Putz 1984), bark characteristics, growth rates (Campbell & Newbery 1993), canopy geometry, climber’s association with specific host trees (Carse et al. 2000; Carsten et al. 2002; Pinard & Putz 1994) and neighborhood characteristics (Perez-Salicrup et al. 2001) may determine the ...
    • ...Among several studies on tree-liana interactions including those of the South America - the Venezuelan forests (Putz 1983), Bolivian liana forest (Perez-Salicrup et al. 2001) and Bolivian dry forest (Carse et al. 2000) reveal that 42%, 86% and 78%, respectively, of trees carried lianas...

    M. SRIDHAR REDDYet al. Liana diversity and distribution on host trees in four inland tropical...

    • ...Several studies have failed to find any associations between lianas and tree traits, suggesting that, instead, spatial factors may influence the susceptibility of trees to lianas (Carse et al. 2000; Pérez-Salicrup et al. 2001; Malizia & Grau 2006)...
    • ...Liana infestation may also be especially prevalent in small patches with a high abundance of regenerating lianas, such as in canopy gaps (Putz 1984b; Carse et al. 2000; Malizia & Grau 2006)...
    • ...Studies failing to find evidence for liana-tree associa tions (Carse et al. 2000; Pérez-Salicrup et al. 2001; Malizia & Grau 2006) were mostly carried out in areas with recent or nearby disturbance, which may have led to near saturation of the host community (infestation rates of 77, 83 and 65% respectively)...
    • ...in canopy gaps, results in high infestation rates for trees growing in and near these patches (Putz 1984b; Carse et al. 2000; Malizia & Grau 2006)...

    van der Heijdenet al. Infestation of trees by lianas in a tropical forest in Amazonian Peru

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