Influence of Topography on the Distribution of Ground-Dwelling Ants in an Amazonian Forest

Vasconcelos, Heraldo L.; Macedo, Amanda B.; Vilhena, José M. S.

doi:10.1076/snfe.38.2.115.15923

Cited by 50 publications

(64 citation statements)

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“…Although the ant fauna of the state of Acre is still poorly understood, the number of ant inventories for the Amazon basin growed exponentially in recent decades (Benson and Harada 1988;Majer and Delabie 1994;Delabie 2000, Vasconcelos et al 2001;Vasconcelos et al 2003;Vasconcelos and Vilhena 2006;Santos et al 2008;Donoso and Ramón 2009;Harada and Ketelhut 2009;Souza et al 2012). We expect this study help to stimulate new ant inventories in state of Acre, which is crucial to properly describe and understand the ant species distribution patterns in the southwestern Amazon.…”

Section: Resultsmentioning

confidence: 99%

Check list of ground-dwelling ants (Hymenoptera: Formicidae) of the eastern Acre, Amazon, Brazil

Miranda¹,

Oliveira²,

Baccaro³

et al. 2012

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The ant fauna of state of Acre, Brazilian Amazon, is poorly known. The aim of this study was to compile the species sampled in different areas in the State of Acre. An inventory was carried out in pristine forest in the municipality of Xapuri. This list was complemented with the information of a previous inventory carried out in a forest fragment in the municipality of Senador Guiomard and with a list of species deposited at the Entomological Collection of National Institute of Amazonian Research– INPA. The resulting list covered 268 species distributed in 52 genera and nine subfamilies, and records 23 species and four morphospecies for the first time in the state of Acre. Due to the large environmental heterogeneity, future inventories will be crucial to properly describe and understand ant species distribution patterns in southwestern Amazon.

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Section: Resultsmentioning

confidence: 99%

Check list of ground-dwelling ants (Hymenoptera: Formicidae) of the eastern Acre, Amazon, Brazil

Miranda¹,

Oliveira²,

Baccaro³

et al. 2012

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“…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%

“…Traditionally, pitfall traps remain in the field for 48 hours in studies with ground-dwelling ants (Pik et al, 1999;Bestelmeyer et al, 2000;Vasconcelos et al, 2003;Oliveira et al, 2009;Souza et al, 2009;Baccaro et al, 2012Baccaro et al, , 2013Souza et al, 2012). Nevertheless, it is argued that the permanence of the traps for longer periods could capture more diversity (Bestelmeyer et al, 2000).…”

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confidence: 99%

“…These combinations of environmental variables account for the variation associated with ant's assemblage structure across tropical landscapes (Vasconcelos et al, 2003;Oliveira et al, 2009). Investigating these types of relationships between ants and environmental variables is of more practical importance than simply showing correlations between the numbers of taxonomic entities (Souza et al, 2016).…”

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confidence: 99%

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A comparison between time of exposure, number of pitfall traps and the sampling cost to capture ground-dwelling poneromorph ants (Hymenoptera: Formicidae)

2018

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Using effective survey protocols to address the effects of environmental change are key to saving time, resources and costs. Although exhaustive sampling in any location has been shown as impractical, biodiversity sampling projects must capture sufficient information to show how species assemblages change with the environmental variables. This study investigated time of exposure in the field and the number of pitfall traps that efficiently sampled poneromorph ants in 30 250 m long plots across an area of 25 km2 of tropical rain forest in Brazil. The treatments used for the surveys included two days and 300 traps, 14 days and 300 traps, 14 days and 750 traps, and were considered the minimum, intermediate and maximum sampling efforts, respectively. We characterized each assemblage of ants in relation to a gradient of soil texture, terrain slope and leaf and branch litter volume, and then tested whether the ecological relationships observed with the maximum effort were comparable to data on intermediate and minimum sampling efforts. We also estimated the cost-effectiveness of using the protocols in survey programs. The assemblage of species sampled during 14 days was similar to the assemblage captured during two days, indicating that the number of days influenced the assemblage similarity more than the number of sampling traps. All ecological patterns detected with the maximum effort were also captured with lesser sampling efforts. Overall, both the intermediate and minimum sampling efforts represented savings around 26˗40% of total project costs and 43˗45% of time to process the samples. We recommend that two days of trapping time combined with 300 pitfall traps is a highly effective shortcut for monitoring assessment, which can be applied to large-scale biodiversity surveys in tropical forests.

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“…Contudo, informações sobre a influência do relevo nos organismos do solo foram encontradas apenas para formigas da serapilheira em Floresta Amazônica de terra firme (VASCONCELOS et al, 2003). Estudos desta natureza são importantes, pois a fauna do solo fornece indicativos da sustentabilidade ecossistêmica uma vez que modificações edafoclimáticas resultam em alterações na estrutura e composição da comunidade da fauna do solo.…”

Section: Introductionunclassified

Relação Fauna Do Solo-Paisagem Em Plantio De Eucalipto Em Topossequência

Neto

Camara

Anjos

et al. 2018

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ResumoEste estudo objetivou avaliar a influência do relevo sobre os artrópodes edáficos em um plantio de Eucalyptus urophylla. Coletou-se a camada de serapilheira e solo (0 -5 cm) circunscritos a um gabarito metálico (25 x 25 cm) lançado aleatoriamente (N = 10) em três seções topográficas (TS, TM e TI: terços superior, médio e inferior, respectivamente) nas estações chuvosa e seca de 2003. Formicidae foi o grupo taxonômico predominante, independentemente da seção topográfica. A análise de componentes principais individualizou as seções topográficas entre si e demonstrou a correlação de um maior número de grupos taxonômicos com TS. A análise de agrupamento hierárquico indicou a elevada similaridade entre TI e TM, que se apresentaram como dissimilares em relação a TS. As diferenças entre as seções topográficas provavelmente foram influenciadas pela maior umidade gravimétrica e fertilidade do solo em TS. Palavras-chave: Artrópodes do solo, biologia do solo, Eucalyptus urophylla, Formicidae, relevo. AbstractSoil fauna-landscape relationship in topossequence eucalyptus plantation. This study aimed to evaluate the influence of relief on edaphic arthropods in a Eucalyptus urophylla plantation. Litter layer and soil (0 -5 cm) randomly released (N = 10) circumscribed to a metal jig (25 x 25 cm) were collected in three topographic sections (TS, TM, and TI: upper, middle, and lower thirds, respectively) in the rainy and dry seasons of 2003. Formicidae was the predominant taxonomic group, independently of the topographic section. The main component analysis individualized the topographic sections among themselves and demonstrated the correlation of a greater number of taxonomic groups with TS. The hierarchical clustering analysis indicated high similarity between TI and TM, which were dissimilar in relation to TS. The differences among topographic sections were probably influenced by the higher gravimetric moisture and soil fertility in TS.

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Influence of Topography on the Distribution of Ground-Dwelling Ants in an Amazonian Forest

Cited by 50 publications

References 0 publications

Check list of ground-dwelling ants (Hymenoptera: Formicidae) of the eastern Acre, Amazon, Brazil

Check list of ground-dwelling ants (Hymenoptera: Formicidae) of the eastern Acre, Amazon, Brazil

A comparison between time of exposure, number of pitfall traps and the sampling cost to capture ground-dwelling poneromorph ants (Hymenoptera: Formicidae)

Relação Fauna Do Solo-Paisagem Em Plantio De Eucalipto Em Topossequência

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