COMPETITION, SEED LIMITATION, DISTURBANCE, AND REESTABLISHMENT OF CALIFORNIA NATIVE ANNUAL FORBS
نویسندگان
چکیده
منابع مشابه
Seed and establishment limitation contribute to long-term native forb declines in California grasslands.
The effects of exotic species invasions on biodiversity vary with spatial scale, and documentation of local-scale changes in biodiversity following invasion is generally lacking. Coupling long-term observations of local community dynamics with experiments to determine the role played by exotic species in recruitment limitation of native species would inform both our understanding of exotic impa...
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Exotic annual grasses are a major challenge to successful restoration in temperate and Mediterranean climates. Experiments to restore abandoned agricultural fields from exotic grassland to coastal sage scrub habitat were conducted over two years in southern California, U.S.A. Grass control methods were tested in 5 m2 plots using soil and vegetation treatments seeded with a mix of natives. The t...
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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...
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In field experiments (1993–1998) using an annual self-pollinated vetch species, Vicia angustifolia, the effects of pre-dispersal seed predators (pre-DSPs) on plant performance and demography were studied. Insect exclusion by insecticides, vegetation perturbation at the start of the experiment by removing the top soil layer, and sowing extra seeds were applied at one site (Site 1) on 32 plots, a...
متن کاملEvaluation of seed yield and competition indices for intercropped barley (Hordeum vulgare) and annual medic (Medicago scutellata)
Annual medic is an annual crop which performs well in various forage cropping systems. However availability of medic seeds is a major challenge for livestock producers in Iran. This study was conducted to determine if intercropping annual medic with barley can produce supplement medic seeds while barley grain yield as the main crop is not compromised. Two experiments were carried out at the exp...
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ژورنال
عنوان ژورنال: Ecological Applications
سال: 2003
ISSN: 1051-0761
DOI: 10.1890/1051-0761(2003)013[0575:csldar]2.0.co;2