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When bigger is not better: intraspecific competition for pollination increases with population size in invasive milkweeds.
Ward, M.; Johnson, S. D.; Zalucki, M. P.; Springer Berlin, Heidelberg, Germany, Oecologia, 2013, 171, 4, pp 883-891, 56 ref. One of the essential requirements for an introduced plant species to become invasive is an ability to reproduce outside the native range, particularly when initial populations are small. If a reproductive Allee effect is operating, plants in small populat...
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Isotopic niche mirrors trophic niche in a vertebrate island invader.
Rodríguez M., M. A.; Herrera M., L. G.; Springer Berlin, Heidelberg, Germany, Oecologia, 2013, 171, 2, pp 537-544, 32 ref. Caution for the indiscriminate conversion of the isotopic niche into ecologic niche was recently advised. We tested the utility of the isotopic niche to answer ecological questions on oceanic islands. We compared the isotopic niches of black rats (Rattus ...
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United we stand, divided we fall: a meta-analysis of experiments on clonal integration and its relationship to invasiveness.
Song YaoBin; Yu FeiHai; Keser, L. H.; Dawson, W.; Fischer, M.; Dong Ming; Kleunen, M. van; Springer Berlin, Heidelberg, Germany, Oecologia, 2013, 171, 2, pp 317-327, 69 ref. Many ecosystems are dominated by clonal plants. Among the most distinctive characteristics of clonal plants is their potential for clonal integration (i.e. the translocation of resources between interconnected ramets), suggesting that integration may play...
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Do anuran larvae respond behaviourally to chemical cues from an invasive crayfish predator? A community-wide study.
Nunes, A. L.; Richter-Boix, A.; Laurila, A.; Rebelo, R.; Springer Berlin, Heidelberg, Germany, Oecologia, 2013, 171, 1, pp 115-127, 59 ref. Antipredator behaviour is an important fitness component in most animals. A co-evolutionary history between predator and prey is important for prey to respond adaptively to predation threats. When non-native predator species invade new areas, native prey ...
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Temperature and functional traits influence differences in nitrogen uptake capacity between native and invasive grasses.
Leffler, A. J.; James, J. J.; Monaco, T. A.; Springer Berlin, Heidelberg, Germany, Oecologia, 2013, 171, 1, pp 51-60, 61 ref. Performance differences between native and exotic invasive plants are often considered static, but invasive grasses may achieve growth advantages in western North America shrublands and steppe under only optimal growing conditions. We examine differences ...
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Complex interactions between spatial pattern of resident species and invasiveness of newly arriving species affect invasibility.
Thébault, A.; Stoll, P.; Buttler, A.; Springer Berlin, Heidelberg, Germany, Oecologia, 2012, 170, 4, pp 1133-1142, 46 ref. Understanding the factors that affect establishment success of new species in established communities requires the study of both the ability of new species to establish and community resistance. Spatial pattern of species within a community can affect pla...
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Expansion of a globally pervasive grass occurs without substantial trait differences between home and away populations.
Leifso, A.; MacDougall, A. S.; Husband, B.; Hierro, J. L.; Köchy, M.; Pärtel, M.; Peltzer, D. A.; Springer Berlin, Heidelberg, Germany, Oecologia, 2012, 170, 4, pp 1123-1132, 56 ref. The global expansion of species beyond their ancestral ranges can derive from mechanisms that are trait-based (e.g., post-establishment evolved differences compared to home populations) or circumstantial (e.g., propagule pressure, with no trait-based diff...
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Effects of an invasive plant transcend ecosystem boundaries through a dragonfly-mediated trophic pathway.
Burkle, L. A.; Mihaljevic, J. R.; Smith, K. G.; Springer Berlin, Heidelberg, Germany, Oecologia, 2012, 170, 4, pp 1045-1052, 47 ref. Trophic interactions can strongly influence the structure and function of terrestrial and aquatic communities through top-down and bottom-up processes. Species with life stages in both terrestrial and aquatic systems may be particularly likely to link the...
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Intraspecific competition facilitates the evolution of tolerance to insect damage in the perennial plant Solanum carolinense.
McNutt, D. W.; Halpern, S. L.; Barrows, K.; Underwood, N.; Springer Berlin, Heidelberg, Germany, Oecologia, 2012, 170, 4, pp 1033-1044, 72 ref. Tolerance to herbivory (the degree to which plants maintain fitness after damage) is a key component of plant defense, so understanding how natural selection and evolutionary constraints act on tolerance traits is important to general theories of plant-he...
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Benefits of photosynthesis for insects in galls.
Haiden, S. A.; Hoffmann, J. H.; Cramer, M. D.; Springer Berlin, Heidelberg, Germany, Oecologia, 2012, 170, 4, pp 987-997, 30 ref. Insect-induced plant galls are predominantly reputed to act as strong carbon sinks, although many types of galls contain chlorophyll and have the potential to photosynthesize. We investigated whether the photosynthetic capacity of bud galls induced by a P...
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