EFFECTS OF EXOTIC GRASSES ON SOIL SEED BANKS IN SOUTHEASTERN ARIZONA GRASSLANDS
نویسندگان
چکیده
منابع مشابه
Seed banks of native forbs, but not exotic grasses, increase during extreme drought.
Extreme droughts such as the one that affected California in 2012-2015 have been linked to severe ecological consequences in perennial-dominated communities such as forests. In annual communities, drought impacts are difficult to assess because many species persist through facultative multiyear seed dormancy, which leads to the development of seed banks. Impacts of extreme drought on the abunda...
متن کاملEffects of Water Level on Three Wetlands Soil Seed Banks on the Tibetan Plateau
BACKGROUND Although the effect of water level on germination in soil seed banks has been documented in many ecosystems, the mechanism is not fully understood, and to date no empirical studies on this subject exist. Further, no work has been done on the effect of water level on seed banks of drying and saline-alkaline wetlands in alpine areas on the Tibetan Plateau. METHODOLOGY We examined the...
متن کاملSoil factors effects on life history attributes of Leiothrix spiralis and Leiothrix vivipara (Eriocaulaceae) on rupestrian grasslands in Southeastern Brazil.
In this study, we hypothesized that the life history traits of Leiothrix spiralis and L. vivipara would be linked to soil factors of the rupestrian grasslands and that rosette size would be influenced by soil moisture. Soil analyses were performed from five populations of L. spiralis and four populations of L. vivipara. In each area, three replicates were employed in 19 areas of occurrence of L...
متن کاملCompetition and soil resource environment alter plant–soil feedbacks for native and exotic grasses
Feedbacks between plants and soil biota are increasingly identified as key determinants of species abundance patterns within plant communities. However, our understanding of how plant-soil feedbacks (PSFs) may contribute to invasions is limited by our understanding of how feedbacks may shift in the light of other ecological processes. Here we assess how the strength of PSFs may shift as soil mi...
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ژورنال
عنوان ژورنال: Western North American Naturalist
سال: 2007
ISSN: 1527-0904
DOI: 10.3398/1527-0904(2007)67[206:eoegos]2.0.co;2