Vertical stratification of leaf-beetle assemblages (Coleoptera: Chrysomelidae) in two forest types in Panama

Charles, E; Basset, Yves

doi:10.1017/s0266467405002300

Cited by 63 publications

(59 citation statements)

References 17 publications

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“…These patterns are likely to reflect the specific biology of the species concerned and may even change with season (Devries & Walla 2001), although we have not addressed this possibility here. Our finding that there was vertical stratification in the beetle assemblage concurs with those for other tropical forest insect taxa (Longino & Nadkarni 1990;DeVries et al 1997;Brü hl et al 1998;Rogers & Kitching 1998;Basset et al 2001;Schultze et al 2001;Tanabe 2002;Charles & Basset 2005).…”

Section: Discussionsupporting

confidence: 89%

Beetle assemblages from an Australian tropical rainforest show that the canopy and the ground strata contribute equally to biodiversity

2006

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There remains great uncertainty about how much tropical forest canopies contribute to global species richness estimates and the relative specialization of insect species to vertical zones. To investigate these issues, we conducted a four-year sampling program in lowland tropical rainforest in North Queensland, Australia. Beetles were sampled using a trap that combines Malaise and flight interception trap (FIT) functions. Pairs of this trap, one on the ground and a second suspended 15-20 m above in the canopy were located at five sites, spaced 50 m or more apart. These traps produced 29 986 beetles of 1473 species and 77 families. There were similar numbers of individuals (canopy 14 473; ground 15 513) and species (canopy 1158; ground 895) in each stratum, but significantly more rare species in the canopy (canopy 509; ground 283). Seventy two percent of the species (excluding rare species) were found in both strata. Using IndVal, we found 24 and 27% of the abundant species (nR20 individuals) to be specialized to the canopy and the ground strata, respectively, and equivalent analyses at the family level showed figures of 30 and 22%, respectively. These results show that the canopy and the ground strata both provide important contributions to rainforest biodiversity.

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Section: Discussionsupporting

confidence: 89%

Beetle assemblages from an Australian tropical rainforest show that the canopy and the ground strata contribute equally to biodiversity

2006

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“…Differences in the community structure of many rain forest organisms (Orians 1969;Pearson 1971;Smith 1973;Terborgh 1980;Bernard 2001;Vieira and Monteiro 2003;Charles and Bassett 2005;Roisin et al 2006) are driven by the marked contrasts in forest structure, lighting, and microclimate observed across strata (Allee 1926;Longman and Jenik 1974;Richards 1996;Madigosky 2004). Because the canopy has a two-dimensional surface with large vertical discontinuities and horizontal gaps created by treefalls (Terborgh et al 1990;Daly and Mitchell 2000), it receives greater amounts of light and experiences more variation in light intensity than do the shaded lower strata (Endler 1993;Walther 2002b).…”

Section: Discussionmentioning

confidence: 99%

Ecology Predicts Levels of Genetic Differentiation in Neotropical Birds

Burney

Brumfield

2009

The American Naturalist

256

224

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Despite the theoretical link between the ecology and the population genetics of species, little empirical evidence is available that corroborates the association. Here, we examined genetic variation in 40 codistributed species of lowland Neotropical rain forest birds that have populations isolated on either side of the Andes, the Amazon River, and the Madeira River. We found widely varying levels of genetic divergence among these taxa across the same biogeographic barriers. Our investigation of the extent to which ecological traits predicted the amount of cross-barrier divergence revealed a strongly significant relationship between the forest stratum at which a species forages and the level of cross-barrier genetic differentiation. Canopy species had statistically lower genetic divergence values across the Andes and the two Amazonian rivers than did understory birds. We hypothesize that the association reflects an effect of dispersal propensity, which is greater in canopy birds, on the movement of alleles among demes (i.e., migration) and, consequently, on the interdemic proportion of the genetic variance. Differences in dispersal propensity may also explain the observation that understory species contain a significantly greater number of subspecies than do canopy species. This result indicates that higher rates of diversification may occur in lineages with lower dispersal propensity.

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“…Many studies in tropical forests have reported that the abundance and species diversity of lepidopteran (e.g., Basset 2001;Basset et al 2001) and coleopteran (e.g., Basset 2001;Charles and Basset 2005) assemblages are greater in the canopy than in the understory, although there are cases in which the understory layer is as speciose as the canopy layer for Lepidoptera (e.g., Schulze et al 2001;Beck et al 2002) and Coleoptera (e.g., Stork and Grimbacher 2006). In several studies in the tropics, patterns among the various components of diversity are divergent.…”

Section: Discussionmentioning

confidence: 99%

Importance of the understory stratum to entomofaunal diversity in a temperate deciduous forest

Hirao¹,

Murakami²,

Kashizaki³

2008

Ecological Research

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The vertical stratification of lepidopteran and coleopteran communities in a cool-temperate deciduous forest in Japan was examined to evaluate the hypothesis of an expected uniform distribution of mobile flying insects between the canopy and understory of temperate forests. Lepidopteran and coleopteran insects were trapped using light traps at three sites in each of the canopy and understory for three consecutive nights each month from April to October 2001. For Lepidoptera, species richness, abundance, and family richness were significantly higher in the understory than in the canopy. For Coleoptera, only abundance was larger in the canopy relative to the understory; species and family richness did not differ between the strata. The beta diversity of the lepidopteran community was larger between the strata than among sites, but the coleopteran community showed an inverse pattern. These results imply the presence of vertical stratification within the lepidopteran community, but not within the coleopteran community, in the temperate forest. The understory contributes more than the canopy to lepidopteran diversity in the temperate forest, although this stratification may be relatively weak because, in contrast to the situation in tropical forests, the canopy and understory assemblages share many species.

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Vertical stratification of leaf-beetle assemblages (Coleoptera: Chrysomelidae) in two forest types in Panama

Cited by 63 publications

References 17 publications

Beetle assemblages from an Australian tropical rainforest show that the canopy and the ground strata contribute equally to biodiversity

Beetle assemblages from an Australian tropical rainforest show that the canopy and the ground strata contribute equally to biodiversity

Ecology Predicts Levels of Genetic Differentiation in Neotropical Birds

Importance of the understory stratum to entomofaunal diversity in a temperate deciduous forest

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