1. Camponotus femoratus (Fabricius, 1804) and Crematogaster levior Longino, 2003 are Amazonian ants that jointly live in a parabiotic association in arboreal nests that are known as Ant‐Gardens (AGs). Both species are locally abundant and aggressive, which forage on the ground and on the vegetation.
2. We evaluated, with extensive sampling, the effect of Ca. femoratus and Cr. levior on the ground and the understory dwelling of ant assemblages in the southern Amazon using pit‐fall traps, beating‐tray sampling, and baiting.
3. We found that Ca. femoratus and Cr. levior caused a decrease in both the abundance and the species richness of the ground ants, changing the assemblage composition, and causing a nestedness pattern. Yet, AG ants seem to not promote significant changes in the assemblage of ants in the understory, with the exception of canopy openness and region, indicating a spatial resource partitioning.
4. Our results showed that the frequency of these parabiotic AG ant pairs can modify the regional assemblage of the ground‐dwelling ants. As ants are ecological engineers and interact with numerous organisms in tropical habitats, the effect of the parabiotic ants can be extended to other organisms that inhabit the gaps along succession.

中文翻译：

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优势共生生物蚂蚁-花园蚂蚁对亚马逊雨林下层和地下蚂蚁组合的影响

1. Camponotus femoratus（Fabricius，1804）和Crematogaster levior Longino，2003是亚马逊蚂蚁，它们共同生活在树栖巢的共生生物协会中，被称为蚂蚁花园（AGs）。这两个物种在当地都很丰富且具侵略性，它们在地面和植被上觅食。
2. 我们通过大量采样评估了钙的作用。股骨和铬。使用坑陷陷阱，殴打托盘采样和诱饵在南部亚马逊河的地面上挖掘利物，并在南部亚马逊蚁群的底层住所。
3. 我们发现钙。股骨和铬。利维耶尔引起了地面蚂蚁的丰度和物种丰富度的降低，改变了组合物的组成，并导致了嵌套模式。但是，AG蚂蚁似乎并未促进地下蚂蚁组合的显着变化，除了树冠的开放性和区域性外，这表明空间资源已在分区。
4. 我们的结果表明，这些共生生物AG蚂蚁对的频率可以改变地栖蚂蚁的区域组合。由于蚂蚁是生态工程师，并且与热带栖息地中的许多生物相互作用，因此，共生蚂蚁的作用可以扩展到居住在演替间隙中的其他生物。