2009
DOI: 10.1590/s0100-204x2009000800008
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Ant species distribution along a topographic gradient in a "terra-firme" forest reserve in Central Amazonia

Abstract: -In Amazonia, topographical variations in soil and forest structure within "terra-firme" ecosystems are important factors correlated with terrestrial invertebrates' distribution. The objective of this work was to assess the effects of soil clay content and slope on ant species distribution over a 25 km 2 grid covering the natural topographic continuum. Using three complementary sampling methods (sardine baits, pitfall traps and litter samples extracted in Winkler sacks), 300 subsamples of each method were take… Show more

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Cited by 42 publications
(38 citation statements)
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“…In total 750 samples were taken from 25 pitfall traps installed at 10 m intervals in each plot. We also used data from Oliveira et al (2009), which used the same pitfall traps in the same period and area but with a different sampling effort, using a total 300 samples taken from 10 pitfall traps installed at 25 m intervals in each plot and left open for 48 hours. Thus, using data from both surveys, we are analyzing three sampling efforts in the 30 plots: two days and 300 traps, 14 days and 300 traps, 14 days and 750 traps were considered as the minimum, intermediate and maximum effort, respectively.…”
Section: Discussionmentioning
confidence: 99%
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“…In total 750 samples were taken from 25 pitfall traps installed at 10 m intervals in each plot. We also used data from Oliveira et al (2009), which used the same pitfall traps in the same period and area but with a different sampling effort, using a total 300 samples taken from 10 pitfall traps installed at 25 m intervals in each plot and left open for 48 hours. Thus, using data from both surveys, we are analyzing three sampling efforts in the 30 plots: two days and 300 traps, 14 days and 300 traps, 14 days and 750 traps were considered as the minimum, intermediate and maximum effort, respectively.…”
Section: Discussionmentioning
confidence: 99%
“…In tropical rainforest, soil clay content has also been shown to affect the distribution of palms (Costa et al, 2009), frogs (Menin et al, 2007), oribatid mites and ants (Oliveira et al, 2009;Vasconcelos et al, 2003;Souza et al, 2007;2016). The effect of each environmental factor varies depending on the scale of analysis (total area surveyed and the number of sampling units).…”
Section: Discussionmentioning
confidence: 99%
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“…For palms, soil and topography could explain 60 to 73% of the variance in species composition ). For ants, soil texture could predict 3 to 31% (depending on the collection method) of species composition (Oliveira et al 2009). Some biological groups, such as pseudo-scorpions (Aguiar et al 2006), were not associated with soil and topography, and the tight control on plot environmental conditions means that these results are not artifacts of sampling.…”
Section: Estimation Of Organismal Abundance or Growth Ratesmentioning
confidence: 99%