Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.14471/2015.35.002 |
| Title (Primary) | Demography of the alpine pioneer species Saxifraga aizoides in different successional stages at the glacier foreland of the Rotmoosferner (Obergurgl, Ötztal, Austria) |
| Author | Winkler, E.; Marcante, S.; Erschbamer, B. |
| Source Titel | Tuexenia |
| Year | 2015 |
| Department | OESA |
| Volume | 35 |
| Page From | 267 |
| Page To | 283 |
| Language | englisch |
| Keywords | colonization, demography, fecundity, matrix model, mortality, population growth rate, primary succession |
| UFZ wide themes | RU5; |
| Abstract | The demography of the alpine pioneer species Saxifraga aizoides was investigated along a succes-sional gradient at the Rotmoos glacier foreland (2,330–2,450 m a.s.l., Obergurgl, Ötztal, Austria) from recently deglaciated areas to advanced successional stages. A basic hypothesis of our study was that fecundity might play an essential role for population growth rate on the youngest site and become of minor importance at advanced successional stages. A matrix modelling approach was performed to calculate the main demographic parameters on 6, 33, and 81 year old moraines. Our results partly confirmed the prediction of the larger role of fecundity on the youngest sites. Here, seedling mortality was lower compared to the older sites, and the reproductive success was significantly higher. All in all, Saxifraga aizoides mainly follows a “persistence strategy” from the beginning, characterized by the fact that large individuals did not undergo mortality at the recently deglaciated site. However, in the long term a population decline will occur due to plant age and changes of environmental conditions along the successional gradient. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=16650 |
| Winkler, E., Marcante, S., Erschbamer, B. (2015): Demography of the alpine pioneer species Saxifraga aizoides in different successional stages at the glacier foreland of the Rotmoosferner (Obergurgl, Ötztal, Austria) Tuexenia 35 , 267 - 283 10.14471/2015.35.002 |
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