Ant assemblages of Brazil nut trees Bertholletia excelsa in forest and pasture habitats in the Southwestern Brazilian Amazon

Oliveira, Amanda Batista da Silva de; Schmidt, Fernando Augusto

doi:10.1007/s10531-018-1657-0

Cited by 11 publications

(2 citation statements)

References 47 publications

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“…Pastures are very different from forest habitats, specifically in relation to the abiotic conditions and resources available such as land cover, leaf litter soil cover, moisture, and biodiversity (Fearnside, 2005;Imazon, 2010;Araújo et al, 2011). This is the case in the southwestern Brazilian Amazon, where ant assemblages in both forest and pasture habitats present very distinctive patterns in both fauna and species diversity (Oliveira & Schmidt, 2019).…”

Section: Introductionmentioning

confidence: 96%

Mechanisms of species coexistence and functional diversity of ant assemblages in forest and pasture habitats in southwestern Brazilian Amazon

Menezes

Schmidt

2020

Sociobiology

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In this study, we investigated the mechanisms behind species coexistence and the relationships between functional diversity and species richness in ant assemblages in both forest and pasture habitats in the southwestern Brazilian Amazon. We addressed the specific question: What is the primary mechanism for species coexistence in forest and pasture habitats? According to the identified mechanism in each habitat, we had the following alternative expectations: (i) niche partitioning – we expected to observe a linear positive relationship between functional diversity and species richness, indicating a complementary relationship; or (ii) niche filtering – a positive constant asymptotic relation between functional diversity and species richness, indicating a functional redundancy relationship. In total, we sampled 91 ant species, 82 species in a forest habitat and 16, in a pasture habitat. In the forest habitat we identified niche filtering as the structuring mechanism of the ant assemblage, but we were unable to identify a clear mechanism in the pasture habitat. Although the relationship between functional diversity and species richness was positive in both habitats, the relationship was weaker in the forest habitat, indicating a greater functional redundancy among the ant species in this habitat. Our results reinforce the divergence of species coexistence mechanisms and ant assemblage structures in both natural and human-modified habitats in the Southwestern Brazilian Amazon.

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Section: Introductionmentioning

confidence: 96%

Mechanisms of species coexistence and functional diversity of ant assemblages in forest and pasture habitats in southwestern Brazilian Amazon

Menezes

Schmidt

2020

Sociobiology

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“…3f The angustus species group (Figs. 4,5,6,7,8,9,10,11,12,13,14,15,16) The angustus group was proposed by Kempf (1958a) based on the subgenus Harnedia of the genus Paracryptocerus, with 26 species divided into seven subgroups. De Andrade and Baroni Urbani (1999) reorganized this scheme, reducing the angustus group to Kempf's angustus subgroup, which was composed by C. adolphi, C. angustus, C. goeldii, C. notatus (= P. (Harnedia) fleddermanni in Kempf, 1958a), C. pallidicephalus (= P. (Harnedia) striativentris in Kempf, 1958a), and C. targionii.…”

Section: Introductionmentioning

confidence: 99%

A taxonomic study of the Brazilian turtle ants (Formicidae: Myrmicinae: Cephalotes)

Oliveira

Powell

Feitosa

2021

Rev. Bras. entomol.

913

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We revise the taxonomy of species of the ant genus Cephalotes occurring in Brazil. Sixty-four species are recognized, distributed in 14 species groups. Five species are described as new: Cephalotes gabicamacho new species, Cephalotes marycorn new species, and Cephalotes monicaulyssea new species (angustus group); Cephalotes liviaprado new species (fiebrigi group); and Cephalotes mariadeandrade new species (pinelii group). The soldier and gyne of C. adolphi (angustus group), and the gyne and male of C. nilpiei (pinelii group) are described for the first time. Cephalotes marginatus is synonymized under C. atratus. The bruchi and the laminatus species groups are synonymized under fiebrigi and pusillus groups, respectively. The new species group manni is proposed, derived from the basalis species group. Distribution maps for each species in Brazil are provided. In addition, we provide an illustrated morphological glossary for the genus and illustrated identification keys for workers and soldiers for species groups and for all Brazilian species.

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A natural history account of Megalomyrmex ayri Brandão, 1990 (Hymenoptera: Formicidae: Myrmicinae)

et al. 2021

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Ant assemblages of Brazil nut trees Bertholletia excelsa in forest and pasture habitats in the Southwestern Brazilian Amazon

Cited by 11 publications

References 47 publications

Mechanisms of species coexistence and functional diversity of ant assemblages in forest and pasture habitats in southwestern Brazilian Amazon

Mechanisms of species coexistence and functional diversity of ant assemblages in forest and pasture habitats in southwestern Brazilian Amazon

A taxonomic study of the Brazilian turtle ants (Formicidae: Myrmicinae: Cephalotes)

A natural history account of Megalomyrmex ayri Brandão, 1990 (Hymenoptera: Formicidae: Myrmicinae)

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