caa a22 4500 469096632 CHVBK 20180323133032.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF00319023 doi (NATIONALLICENCE)springer-10.1007/BF00319023 Johnson Robert Zoology Department, Arizona State University, 85287-1501, Tempe, AZ, USA aut Soil texture as an influence on the distribution of the desert seed-harvester ants Pogonomyrmex rugosus and Messor pergandei [Elektronische Daten] [Robert Johnson] Summary: Pogonomyrmex rugosus and Messor pergandei are ecologically similar species of desert seed-harvester ants that coexist in numerous areas throughout the Sonoran and Mohave Deserts. However, these two species also commonly segregate along physical gradients, with each species predominating in areas that differ in soil texture and/or topographic relief. Along gradients that included bajada and alluvial flat habitats, P. rugosus occurred alone in coarse-textured soils near mountains, while M. pergandei occurred alone in finer-textured soils further away. Conversely, along a vegetation gradient that included creosote bush and saltbush habitats, P. rugosus occurred alone in finer-textured soils than those occupied by either M. pergandei alone or both species in coexistence. However, in both situations clay content was significantly higher in areas occupied by P. rugosus alone, and at the latter site clay content was correlated with relative abundance of each species. Moreover, local distribution pattern of these two species may be related to the effects of clay on water retention, with retention being highest in areas occupied by P. rugosus alone. Differences in reproductive ecology may also affect these patterns as P. rugosus reproductive flights follow summer monsoon rains, while those of M. pergandei occur during the milder winter and spring. Springer-Verlag, 1992 Ants nationallicence Distribution pattern nationallicence Soil texture nationallicence Sonoran desert nationallicence Oecologia Springer-Verlag 89/1(1992-01-01), 118-124 0029-8549 89:1<118 1992 89 442 https://doi.org/10.1007/BF00319023 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00319023 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Johnson Robert Zoology Department, Arizona State University, 85287-1501, Tempe, AZ, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/1(1992-01-01), 118-124 0029-8549 89:1<118 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer