Ökologische Aspekte der Ausbreitung von Bidens frondosa L. in Mitteleuropa. Verdrängt er Bidens tripartita L.

  title={{\"O}kologische Aspekte der Ausbreitung von Bidens frondosa L. in Mitteleuropa. Verdr{\"a}ngt er Bidens tripartita L.},
  author={U. K{\"o}ck},
Summary Sometimes it was supposed, that the invading species of North American origin Bidens frondosa removes the indigenous B. tripartita. The aim of this study was to look for some evidence. Comparing germination pattern, growth, dry matter production, reproductive features, and architecture of both species it is obvious that B. frondosa is able to outcompete B. tripartita. In D e W it -replacement series it can be shown that B. tripartita is supressed under high, medium and low nutritional… Expand
A modelling approach for evaluating phenology and adaptation of two congeneric weeds (Bidens frondosa and Bidens tripartita).
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Compared performance and response to competition among distinct seed morph progenies in two congeneric, co-occurring species: the invasive Bidens frondosa and the non-invasive Bidens tripartita, it is hypothesised that maintainer seed morphs of both species would perform better under increased plant densities and within inter-morphic mixtures, while coloniser morphs would show stronger responses to increased density and perform relatively poorly in inter- morphic mixture. Expand
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Antibacterial and antioxidant potential of essential oil, extract and its fractions of Bidens frondosa Linn were evaluated. Sixty-one components representing 95.41% of the total oil were identified.Expand
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The results suggest that biased introduction and human-mediated selection of ornamental plants with these characteristics might increase the risk that these species ultimately become invasive, and it is important that studies testing for determinants of invasiveness include non-invasive alien species in addition to invasive alien species. Expand
Bidens frondosa L.
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