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Abstract:

Invasive plants may establish strong interactions with species in their new range which could limit or enhance their establishment and spread. These interactions depend upon traits of the invader and the recipient community, and may alter interactions among native species. In the Patagonian steppe we studied interactions of native ant assemblages with seeds of native and exotic plants, and asked whether ant–seed interactions differ with seed types and disturbance levels and whether the amount and type of ant–seed interactions can be predicted if both ant and seed traits are known. To characterize and quantify ant–seed interactions, we offered baits with large seeds of Pappostipa speciosa (native) and medium-sized elaiosome-bearing seeds of Carduus thoermeri (exotic), near and far from a road (high vs. low disturbed areas), and compared ant abundance and composition between areas. Interaction frequency was the highest for C. thoermeri seeds far from the road. Composition of ants interacting with C. thoermeri in these areas differed from that near the road and from that interacting with native seeds. Ant composition and abundance were similar between areas, but some species interacted more with exotic seeds in low disturbed areas. Ant foraging type predicted ant–seed interactions since the abundance of seed harvesters was positively correlated to interactions with P. speciosa, and that of generalists and predators, with interactions with C. thoermeri. The high interaction of ants with exotic seeds in low invaded areas suggests that ant activity could influence plant invasion, either by predating or dispersing seeds of invasive plants. © 2017, Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Ant interactions with native and exotic seeds in the Patagonian steppe: Influence of seed traits, disturbance levels and ant assemblage
Autor:Pirk, G.I.; Lopez de Casenave, J.
Filiación:Laboratorio Ecotono, INIBIOMA, CONICET- Universidad Nacional del Comahue, Pasaje Gutiérrez 1125, Bariloche, 8400, Argentina
Grupo de Investigación en Ecología de Comunidades de Desierto, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, and IEGEBA (UBA-CONICET), Argentina, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
Palabras clave:Formicidae; Granivory; Patagonia; Plant invasion; Road disturbance; assembly rule; biological invasion; disturbance; generalist; granivory; interspecific interaction; invasive species; native species; plant community; plant-insect interaction; seed; steppe; Patagonia; Carduus thoermeri; Formicidae
Año:2017
Volumen:218
Número:11-12
Página de inicio:1255
Página de fin:1268
DOI: http://dx.doi.org/10.1007/s11258-017-0764-4
Título revista:Plant Ecology
Título revista abreviado:Plant Ecol.
ISSN:13850237
CODEN:PLECF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13850237_v218_n11-12_p1255_Pirk

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Citas:

---------- APA ----------
Pirk, G.I. & Lopez de Casenave, J. (2017) . Ant interactions with native and exotic seeds in the Patagonian steppe: Influence of seed traits, disturbance levels and ant assemblage. Plant Ecology, 218(11-12), 1255-1268.
http://dx.doi.org/10.1007/s11258-017-0764-4
---------- CHICAGO ----------
Pirk, G.I., Lopez de Casenave, J. "Ant interactions with native and exotic seeds in the Patagonian steppe: Influence of seed traits, disturbance levels and ant assemblage" . Plant Ecology 218, no. 11-12 (2017) : 1255-1268.
http://dx.doi.org/10.1007/s11258-017-0764-4
---------- MLA ----------
Pirk, G.I., Lopez de Casenave, J. "Ant interactions with native and exotic seeds in the Patagonian steppe: Influence of seed traits, disturbance levels and ant assemblage" . Plant Ecology, vol. 218, no. 11-12, 2017, pp. 1255-1268.
http://dx.doi.org/10.1007/s11258-017-0764-4
---------- VANCOUVER ----------
Pirk, G.I., Lopez de Casenave, J. Ant interactions with native and exotic seeds in the Patagonian steppe: Influence of seed traits, disturbance levels and ant assemblage. Plant Ecol. 2017;218(11-12):1255-1268.
http://dx.doi.org/10.1007/s11258-017-0764-4