http://www.powell-lab.net/about daily 1.0 2025-07-12 http://www.powell-lab.net/publications daily 0.75 2024-10-31 http://www.powell-lab.net/research daily 0.75 2024-10-31 https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410008136062-1DFZL1JHNH3VVV15MHGA/Assembly+4.jpg Research One of the baited arboreal pitfall traps that we use to survey arboreal ant diversity. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410008136125-9LFZC755ZGBXFY601BSL/Assembly+3.jpg Research Collecting artificial nests and surveying tree-level diversity with pitfall traps after 18 months of experimental manipulation. Note the ropes that we use to control canopy connectivity after detaching experimental trees from the surrounding canopy. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410008134726-HHWKHW1TWX5ALLJ3GHPA/Assembly+2.jpg Research An experimental nest after 18 months in the field. The entrance to this nest has been extensively modified, with the occupying ants building a protruding funnel with organic particles. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410008134059-6F8HJEA80GXY6RSV7E3T/Assembly+1.jpg Research Crematogaster workers foraging along one of the ropes used to control canopy connectivity. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409962705743-E74JTN8YGWOTHA1T7MBR/Traits+21.jpg Research A soldier (left) and worker of Cephalotes adolphi. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409962705665-WD5O1TY5K8NB06JZ3Q37/Traits+22.jpg Research A Cephalotes specularis soldier defending a nest entrance with its armored head, as an aggressive Crematogaster worker approaches. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409962707314-PR2W61WKWH92JHSI8W5V/Traits+23.jpg Research Workers cooperating to defend a large nest entrance in Cephalotes atratus, a species that lacks a soldier. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409962707069-GCXXDCXS8DWFRL1AM4H5/Traits+24.jpg Research A Cephalotes depressus worker adopting a defensive "turtling" posture as a larger Camponotus worker looms overhead. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409939808006-AG7445YZFPIT0QKGAEGN/C_persimilis_blocking.jpg Research A Cephalotes persimilis soldier blocking the entrance to one of her colony's cavity nests. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409939808177-8CVLDQTP5V4UGCUNV8Q9/Measuring_nests.jpg Research Quantifying the properties of natural Cephalotes cavity-nests in the cerrado canopy. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409939808062-8ZHYMEL2CINSRTTVGOGS/Deploying_nests.jpg Research Deploying artificial cavities in the cerrado canopy. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1409939808293-LFPUSYTTR821JDJCMGWQ/Occupied_nests.jpg Research An artificial cavity occupied by Cephalotes persimilis and defended by a soldier. http://www.powell-lab.net/people daily 0.75 2025-11-02 http://www.powell-lab.net/ants daily 0.75 2017-11-28 https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652866276-1SVFVH2VZTZZMRWIV1ZX/Army+Ants+2.jpg Ants An Eciton burchellii prey-transport team. The team is led by a member of the specialized "porter" caste, with standard workers behind that help to reduce the friction between the awkward prey item and the rough surfaces over which it has to be carried https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652865824-EEB60CJK29TB52687V9R/Army+Ants+1.jpg Ants Eciton burchellii workers forming living "pothole plugs" in holes in an experimental path. The ant plugs remain perfectly still, forming a living road that speeds the delivery of prey by their nestmates running overhead. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652868093-JYVRRWU1IC3Q86AKM2SJ/Army+Ants+4.jpg Ants An exceptionally large hanging bridge formed between a narrow branch and a tree trunk during an Eciton burchellii colony emigration . "Flanges" have also formed along the narrow branch, providing a widened running surface for the emigration traffic to use. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652867694-FVEU89P66P9ZQE0GE3J3/Army+Ants+3.jpg Ants A large hanging bivouac of a reproductively mature Eciton burchellii colony. This colony contained over 800,000 ants. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410400750893-A0VGHDKJNN9WG23X8YHM/Turtle+ants+1.jpg Ants Cephalotes borgmeieri workers and a soldier. This species have unusually ornate lateral spines. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410401124853-0GHRH441J7VOKC799VAK/Turtle+ants+5.jpg Ants A Cephalotes maculatus worker leaving a nest entrance. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410400752153-BAF6LA7I7UFNRZTYOWET/Turtle+ants+3.jpg Ants A Cephalotes maculatus soldier. This species has a pronounced concave dorsal head disc. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410400750816-ORGBXH8EPURHAVAPP1BX/Turtle+ants+2.jpg Ants A Cephalotes maculatus soldier blocking a nest entrance. The raised edges of its concave head disk are pressed into the perimeter of the hole to mechanically lock its head into place. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652837551-N0UAWYODDLVMB9FYZW5X/Cerrado+Ants+4.jpg Ants A Cephalotes specularis soldier defends a nest entrance from Crematogaster ampla workers. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652836260-92ARQ82UBET9K9J54CAU/Cerrado+Ants+2.jpg Ants Camponotus workers tending homopterans. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652836906-RRS79SC6PB0ZBJW81ZPW/Cerrado+Ants+1.jpg Ants A Cephalotes maculatus worker (top right) and two Cephalotes eduarduli workers feeding from the same bird dropping. https://images.squarespace-cdn.com/content/v1/521176e2e4b07172002a14d4/1410652837167-4X6O82T0ZHRMH6BKQ1WW/Cerrado+Ants+3.jpg Ants An Ectatomma worker with a captured Cephalotes worker between its mandibles. http://www.powell-lab.net/postdoc-2019 daily 0.75 2019-08-05 http://www.powell-lab.net/presentations daily 0.75 2025-11-04