@article{vanKleunenRitland2004,
  author    = {van Kleunen, Mark and Ritland, K.},
  title     = {Predicting evolution of floral traits associated with mating system in a natural plant population},
  issn      = {1010- 061x},
  year      = {2004},
  abstract  = {Evolution of floral traits requires that they are heritable, that they affect fitness, and that they are not constrained by genetic correlations. These prerequisites have only rarely been examined in natural populations. For Mimulus guttatus, we found by using the Riska-method that corolla width, anther length, ovary length and number of red dots on the corolla were heritable in a natural population. Seed production (maternal fitness) was directly positively affected by corolla width and anther size, and indirectly so by ovary length and number of red dots on the corolla. The siring success (paternal fitness), as estimated from allozyme data, was directly negatively affected by anther-stigma separation, and indirectly so by the corolla length-width ratio. Genetic correlations, estimated with the Lynch-method, were positive between floral size measures. We predict that larger flowers with larger reproductive organs, which generally favour outcrossing, will evolve in this natural population of M. guttatus},
  language  = {en}
}
@article{vanKleunenLenssenFischeretal.2004,
  author    = {van Kleunen, Mark and Lenssen, J. P. M. and Fischer, Markus and de Kroon, H.},
  title     = {Local adaption of the clonal plant Ranunculus reptans to flooding along a small-scale gradient.},
  year      = {2004},
  language  = {en}
}
@article{FischervanKleunenSchmid2004,
  author    = {Fischer, Markus and van Kleunen, Mark and Schmid, Bernhard},
  title     = {Experimental life-history evolution: selection on the growth form of a clonal plant on its plasticity},
  issn      = {1010- 061x},
  year      = {2004},
  abstract  = {The growth form along the continuum from compact phalanx plants to more loosely packed guerilla plants is an important life-history trait in clonal plants. Prerequisite for its evolution is heritable genetic variation. Starting with 102 genotypes of the stoloniferous herb Ranunculus reptans, we performed one selection experiment on spatial spread per rosette as measure of guerillaness (broad-sense heritability 0.198) and another on plasticity in this trait in response to competition (broad-sense heritability 0.067). After two generations, spatial spread was 36.9\% higher in the high line than in the low line (realized heritability +/- SE 0.149 +/- 0.039). Moreover, compared with the low line genotypes of the high line had fewer rosettes, a lower proportion of flowering rosettes, a higher proportion of rooted rosettes, more branches per rosette, longer internodes and longer leaves. In the second experiment, we found no significant direct response to selection for high and low plasticity in spatial spread (realized heritability +/- SE - 0.029 +/- 0.063), despite a significant correlated response in plasticity in the length of the first three stolon internodes. Our study indicates a high potential for further evolution of the clonal growth form in R. reptans, but not for its plasticity, and it demonstrates that the clonal growth form does not evolve independently of other clonal life- history characteristics},
  language  = {en}
}
@article{vanKleunenRamponiSchmid2004,
  author    = {van Kleunen, Mark and Ramponi, G. and Schmid, Bernhard},
  title     = {Effects of herbivory simulated by clipping and jasmonic acid on growth and reproduction in Solidago canadensis},
  year      = {2004},
  language  = {en}
}