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Record number 358175
Title Local above-ground persistence of vascular plants: life-history trade-offs and environmental constraints
Author(s) Ozinga, W.A.; Hennekens, S.M.; Schaminée, J.H.J.; Smits, N.A.C.; Bekker, R.M.; Römermann, C.; Bakker, J.P.; Groenendael, J.M. van
Source Journal of Vegetation Science 18 (2007)4. - ISSN 1100-9233 - p. 489 - 497.
Department(s) Centre for Ecosystem Studies
Nature Conservation and Plant Ecology
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) relative growth-rate - distance seed dispersal - park grass experiment - species coexistence - extinction debt - wind dispersal - size - communities - competition - dynamics
Abstract Questions: 1. Which plant traits and habitat characteristics best explain local above-ground persistence of vascular plant species and 2. Is there a trade-off between local above-ground persistence and the ability for seed dispersal and below-ground persistence in the soil seed bank? Locations: 845 long-term permanent plots in terrestrial habitats across the Netherlands. Methods: We analysed the local above-ground persistence of vascular plants in permanent plots (monitored once a year for ca. 16 year) with respect to functional traits and habitat preferences using survival statistics (Kaplan-Meier analysis and Cox' regression). These methods account for censored data and are rarely used in vegetation ecology. Results: Local above-ground persistence is determined by both functional traits (especially the ability to form long-lived clonal connections) and habitat preferences (especially nutrient requirements). Above-ground persistence is negatively related to the ability for dispersal by wind and to the ability to accumulate a long-term persistent soil seed bank (`dispersal through time¿) and is positively related to the ability for dispersal by water. Conclusions: Most species have a half-life expectation over 15 years, which may contribute to time lags after changes in habitat quality or -configuration (`extinction debt¿). There is evidence for a trade-off relationship between local above-ground persistence and below-ground seed persistence, while the relationship with dispersal in space is vector specific. The rate of species turnover increases with productivity.
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