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| Titel |
The effect of wood ant Formica rufa nests on distribution and growth of Impatients parviflora |
| VerfasserIn |
Michal Holec, Diana Holcová, Jan Frouz |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250127330
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| Publikation (Nr.) |
 EGU/EGU2016-7193.pdf |
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| Zusammenfassung |
| The effect of wood ants Formica rufa on distribution of introduces invasive jewelweed Impatiens parviflora was studied in oak forest in North west of the Czech Republic. Jewelweed occured only rarely in the forest floor, the average density was 3.2 plant m-2 here while on and around the ant nest mounds the jewelweed density reached 85.4 plant m-2. Jevelweed growing on the nest mounds were also significantly taller, bigger, with more flowers and produced more seeds that plants in surrounding forest floor. Better growth of jevelweed in ant nests apparently corresponds with significantly higher content of nitrates and available phosporus in the nest compare to forest floor. Seed collection experiment show that ants do not selectively collect jevelweed seeds but may collect them randomly in about the same rates as other organic material. This non targeted collection however may be sufficient to make sure that some seeds get close or in to the nest where population can grow vigorously due to suitable soil conditions. |
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