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      Complementary effects of species and genetic diversity on productivity and stability of sown grasslands

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      Nature Plants
      Springer Nature

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          Diversity and productivity in a long-term grassland experiment.

          Plant diversity and niche complementarity had progressively stronger effects on ecosystem functioning during a 7-year experiment, with 16-species plots attaining 2.7 times greater biomass than monocultures. Diversity effects were neither transients nor explained solely by a few productive or unviable species. Rather, many higher-diversity plots outperformed the best monoculture. These results help resolve debate over biodiversity and ecosystem functioning, show effects at higher than expected diversity levels, and demonstrate, for these ecosystems, that even the best-chosen monocultures cannot achieve greater productivity or carbon stores than higher-diversity sites.
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            Productivity and sustainability influenced by biodiversity in grassland ecosystems

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              Ecological consequences of genetic diversity.

              Understanding the ecological consequences of biodiversity is a fundamental challenge. Research on a key component of biodiversity, genetic diversity, has traditionally focused on its importance in evolutionary processes, but classical studies in evolutionary biology, agronomy and conservation biology indicate that genetic diversity might also have important ecological effects. Our review of the literature reveals significant effects of genetic diversity on ecological processes such as primary productivity, population recovery from disturbance, interspecific competition, community structure, and fluxes of energy and nutrients. Thus, genetic diversity can have important ecological consequences at the population, community and ecosystem levels, and in some cases the effects are comparable in magnitude to the effects of species diversity. However, it is not clear how widely these results apply in nature, as studies to date have been biased towards manipulations of plant clonal diversity, and little is known about the relative importance of genetic diversity vs. other factors that influence ecological processes of interest. Future studies should focus not only on documenting the presence of genetic diversity effects but also on identifying underlying mechanisms and predicting when such effects are likely to occur in nature.
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                Author and article information

                Journal
                Nature Plants
                NPLANTS
                Springer Nature
                2055-0278
                March 30 2015
                March 30 2015
                : 1
                : 4
                : 15033
                Article
                10.1038/nplants.2015.33
                27247033
                c19f60c9-54b2-480d-b1a2-a63122e07bc9
                © 2015
                History

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