Seed banks of native forbs, but not exotic grasses, increase during extreme drought
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...
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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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......................................................................................................... 3 Introduction ................................................................................................... 4 Materials and Methods .............................................................................. 15 Results .................................................................
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A general prediction of ecological theory is that climate change will favor invasive nonindigenous plant species (NIPS) over native species. However, the relative fitness advantage enjoyed by NIPS is often affected by resource limitation and potentially by extreme climatic events such as drought. Genetic constraints may also limit the ability of NIPS to adapt to changing climatic conditions. In...
متن کاملExotic plants contribute positively to biodiversity functions but reduce native seed production and arthropod richness.
Although exotic plants comprise a substantial portion of floristic biodiversity, their contributions to community and ecosystem processes are not well understood. We manipulated plant species richness in old-field communities to compare the impacts of native vs. exotic species on plant biomass, seed production, and arthropod community structure. Plants within diverse communities, regardless of ...
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ژورنال
عنوان ژورنال: Ecology
سال: 2018
ISSN: 0012-9658,1939-9170
DOI: 10.1002/ecy.2160