02509nas a2200193   4500008004100000245011700041210006900158300001300227490000800240520181000248653002302058653001402081653002002095653001902115653002302134100001602157700002002173856012202193       2001                        eng d00aPhysiological and morphological traits of exotic, invasive exotic, and native plant species in tallgrass prairie0 aPhysiological and morphological traits of exotic invasive exotic  a785 -7920 v1623 aWe compared 13 traits of invasive exotic, noninvasive exotic, and ecologically similar native species to determine if there are generalizable differences among these groups that relate to persistence and spread of exotic species in tallgrass prairie plant communities. When species were grouped as invasive (two species), noninvasive (five species), and native (six species), no differences were found for the suite of traits examined, likely because of the high variability within and between groups. However, when exotic species, regardless of invasiveness, were compared with the native species, specific leaf area was ca. 40% higher for the exotic species, a result that is consistent with that of other studies. This pattern was also observed for five of seven pairwise comparisons of exotic and native species with similar life history traits. In contrast, total end‐of‐season biomass was as much as three times higher for the native species in five of seven of the native‐exotic species pairs. For other traits, differences between exotic and native species were species‐specific and were generally more numerous for noninvasive than for invasive exotic species pair‐wise comparisons. Thus, contrary to predictions, exotic species capable of successfully invading tallgrass prairie did not differ considerably from native species in most traits related to resource utilization and carbon gain. Moreover, invasive exotic species, those capable of displacing native species and dominating a community, were not distinct for the observed traits from their native counterparts. These results indicate that other traits, such as the ability to respond to resource pulses or herbivory, may explain more effectively why certain invasive species are able to invade these communities aggressively.10abiomass allocation10agrassland10ainvasive plants10aphotosynthesis10aspecific leaf area1 aSmith, M.D.1 aKnapp, Alan, K.  uhttp://knz.lternet.edu/content/physiological-and-morphological-traits-exotic-invasive-exotic-and-native-plant-species