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Ant Diversity and Stratification in an Amazonian Rainforest.

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Title: Ant Diversity and Stratification in an Amazonian Rainforest.
Authors: Delabie, Jacques H. C.1,2 (AUTHOR) jacques.delabie@gmail.com, Dejean, Alain3,4 (AUTHOR), Leponce, Maurice5,6 (AUTHOR), Longino, John T.7 (AUTHOR), Orivel, Jérôme3,4 (AUTHOR), Touchard, Axel4 (AUTHOR), Compin, Arthur3 (AUTHOR)
Source: Ecology & Evolution (20457758). Dec2025, Vol. 15 Issue 12, p1-11. 11p.
Subject Terms: *Rain forests, *Food chains, Ant ecology, Ants, Classification, Arboreal animals, Life history theory
Abstract: This study focuses on species occupying the three strata of an Amazonian rainforest: the ground and leaf litter, the understorey and the canopy. We employed only two sampling techniques: Winkler extraction for ground‐dwelling ants and direct observations for understorey and canopy species on large branches cut off by a climber. We identified 494 ant species from 10 subfamilies and 77 genera over ≈3.0 ha (Chao1 = 607 species; 95% CI: 566–670 species). Although we found fewer arboreal ants compared to approaches using insecticide fogging, this study confirms similarities between the ant diversity in Amazonian and Mesoamerican rainforests. The functional traits of these ants (i.e., diet, nest‐site preference, population size of the colony) allowed us to identify seven clusters. Cluster 1 is a "hodgepodge" grouping arboreal or ground‐dwelling species with different‐sized colonies (76 species). Cluster 2 primarily includes small colonies of ground‐nesting generalist feeders (142 species). Cluster 3 comprises all arboreal species from the understorey inhabiting myrmecophyte domatia or palm trees plus arboreal species with medium‐sized colonies (37 species). Cluster 4 includes all territorially dominant arboreal ants plus one ground‐dwelling species (21 species). All fungus‐growing species belong to Cluster 5, which also contains ground‐nesting generalist feeders and generalist predators (148 species). All doryline army ants are grouped in Cluster 6 along with one ponerine known for its nomadic behavior (15 species). Almost all specialized predators belong to Cluster 7 (55 species); however, Cluster 5 includes two ponerine species that prey exclusively on termites. Based on a nonmetric multidimensional scaling (NMDS), we confirmed that the position of these clusters corresponded fairly well to the three forest strata. Thus, analyzing functional traits enables the trophic position of most ants and their place in the vertical strata of Neotropical rainforests to be determined. [ABSTRACT FROM AUTHOR]
Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Ant Diversity and Stratification in an Amazonian Rainforest.
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  Data: <searchLink fieldCode="AR" term="%22Delabie%2C+Jacques+H%2E+C%2E%22">Delabie, Jacques H. C.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jacques.delabie@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Dejean%2C+Alain%22">Dejean, Alain</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Leponce%2C+Maurice%22">Leponce, Maurice</searchLink><relatesTo>5,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Longino%2C+John+T%2E%22">Longino, John T.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Orivel%2C+Jérôme%22">Orivel, Jérôme</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Touchard%2C+Axel%22">Touchard, Axel</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Compin%2C+Arthur%22">Compin, Arthur</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Dec2025, Vol. 15 Issue 12, p1-11. 11p.
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  Data: *<searchLink fieldCode="DE" term="%22Rain+forests%22">Rain forests</searchLink><br />*<searchLink fieldCode="DE" term="%22Food+chains%22">Food chains</searchLink><br /><searchLink fieldCode="DE" term="%22Ant+ecology%22">Ant ecology</searchLink><br /><searchLink fieldCode="DE" term="%22Ants%22">Ants</searchLink><br /><searchLink fieldCode="DE" term="%22Classification%22">Classification</searchLink><br /><searchLink fieldCode="DE" term="%22Arboreal+animals%22">Arboreal animals</searchLink><br /><searchLink fieldCode="DE" term="%22Life+history+theory%22">Life history theory</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: This study focuses on species occupying the three strata of an Amazonian rainforest: the ground and leaf litter, the understorey and the canopy. We employed only two sampling techniques: Winkler extraction for ground‐dwelling ants and direct observations for understorey and canopy species on large branches cut off by a climber. We identified 494 ant species from 10 subfamilies and 77 genera over ≈3.0 ha (Chao1 = 607 species; 95% CI: 566–670 species). Although we found fewer arboreal ants compared to approaches using insecticide fogging, this study confirms similarities between the ant diversity in Amazonian and Mesoamerican rainforests. The functional traits of these ants (i.e., diet, nest‐site preference, population size of the colony) allowed us to identify seven clusters. Cluster 1 is a "hodgepodge" grouping arboreal or ground‐dwelling species with different‐sized colonies (76 species). Cluster 2 primarily includes small colonies of ground‐nesting generalist feeders (142 species). Cluster 3 comprises all arboreal species from the understorey inhabiting myrmecophyte domatia or palm trees plus arboreal species with medium‐sized colonies (37 species). Cluster 4 includes all territorially dominant arboreal ants plus one ground‐dwelling species (21 species). All fungus‐growing species belong to Cluster 5, which also contains ground‐nesting generalist feeders and generalist predators (148 species). All doryline army ants are grouped in Cluster 6 along with one ponerine known for its nomadic behavior (15 species). Almost all specialized predators belong to Cluster 7 (55 species); however, Cluster 5 includes two ponerine species that prey exclusively on termites. Based on a nonmetric multidimensional scaling (NMDS), we confirmed that the position of these clusters corresponded fairly well to the three forest strata. Thus, analyzing functional traits enables the trophic position of most ants and their place in the vertical strata of Neotropical rainforests to be determined. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/ece3.72793
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 1
    Subjects:
      – SubjectFull: Rain forests
        Type: general
      – SubjectFull: Food chains
        Type: general
      – SubjectFull: Ant ecology
        Type: general
      – SubjectFull: Ants
        Type: general
      – SubjectFull: Classification
        Type: general
      – SubjectFull: Arboreal animals
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      – SubjectFull: Life history theory
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      – TitleFull: Ant Diversity and Stratification in an Amazonian Rainforest.
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              M: 12
              Text: Dec2025
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              Y: 2025
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