Rosbakh, Sergey and Carta, Angelino and Fernandez-Pascual, Eduardo and Phartyal, Shyam S. and Dayrell, Roberta L. C. and Mattana, Efisio and Saatkamp, Arne and Vandelook, Filip and Baskin, Jerry and Baskin, Carol (2023) Global seed dormancy patterns are driven by macroclimate but not fire regime. NEW PHYTOLOGIST, 240 (2). pp. 555-564. ISSN 0028-646X, 1469-8137
Full text not available from this repository. (Request a copy)Abstract
Seed dormancy maximizes plant recruitment in habitats with variation in environmental suitability for seedling establishment. Yet, we still lack a comprehensive synthesis of the macroecological drivers of nondormancy and the different classes of seed dormancy: physiological dormancy, morphophysiological dormancy and physical dormancy.We examined current geographic patterns and environmental correlates of global seed dormancy variation. Combining the most updated data set on seed dormancy classes for > 10 000 species with > 4 million georeferenced species occurrences covering all of the world's biomes, we test how this distribution is driven by climate and fire regime.Seed dormancy is prevalent in seasonally cold and dry climates. Physiological dormancy occurs in relatively dry climates with high temperature seasonality (e.g. temperate grasslands). Morphophysiological dormancy is more common in forest-dominated, cold biomes with comparatively high and evenly distributed precipitation. Physical dormancy is associated with dry climates with strong seasonal temperature and precipitation fluctuations (e.g. deserts and savannas). Nondormancy is associated with stable, warm and wetter climates (e.g. tropical rain forest). Pyroclimate had no significant effect on the distribution of seed dormancy.The environmental drivers considered in this study had a comparatively low predictive power, suggesting that macroclimate is just one of several global drivers of seed dormancy.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHYSICAL DORMANCY; R-PACKAGE; GERMINATION; EVOLUTIONARY; SIZE; DIVERSIFICATION; BIOGEOGRAPHY; TEMPERATURE; SEASONALITY; FITNESS; environmental gradient; fire; macroclimate; seed dormancy; seed germination; seed trait |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Ökologie und Naturschutzbiologie (Prof. Dr. Peter Poschlod) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Mar 2024 14:43 |
| Last Modified: | 16 Mar 2024 14:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60249 |
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