Positive\n effects of plant species richness on community biomass in biodiversity \nexperiments are often stronger than those from observational field \nstudies. This may be because experiments are initiated with randomly \nassembled species compositions whereas field communities have \nexperienced filtering.<\/p>\n\n\n\n
We compared aboveground biomass production of randomly\n assembled communities of 2\u201316 species (controls) with experimentally \nfiltered communities from which subordinate species were removed, \nresulting in removal communities of 1\u20138 species.<\/p>\n\n\n\n
Removal communities had (1) 12.6% higher biomass than \ncontrol communities from which they were derived, that is, with double \nspecies richness and (2) 32.0% higher biomass than control communities \nof equal richness. These differences were maintained along the richness \ngradient. The increased productivity of removal communities was \nparalleled by increased species evenness and complementarity.<\/p>\n\n\n\n
Result (1) indicates that subordinate species can \nreduce community biomass production, suggesting a possible explanation \nfor why the most diverse field communities sometimes do not have the \nhighest productivity. Result (2) suggests that if a community of S \nspecies has been derived by filtering from a pool of 2S randomly chosen \nspecies it is more productive than a community derived from a pool of S \nrandomly chosen species without filtering.<\/p>\n\n\n\n
Schmid, B., Schmitz, M., Rzanny, M., Scherer-Lorenzen, M., Mwangi, P. N., Weisser, W. W., Hector, A., Schmid, R., & Flynn, D. F. B. (2022). Removing subordinate species in a biodiversity experiment to mimic observational field studies. Grassland Research<\/em>, 1( 1), 53\u2013 62. https:\/\/doi.org\/10.1002\/glr2.12009<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Positive effects of plant species richness on community biomass in biodiversity experiments are often stronger than those from observational field studies. This may be because experiments are initiated with randomly…<\/p>\n","protected":false},"author":2,"featured_media":1683,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[15,13],"tags":[],"_links":{"self":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts\/3975"}],"collection":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/comments?post=3975"}],"version-history":[{"count":1,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts\/3975\/revisions"}],"predecessor-version":[{"id":3976,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/posts\/3975\/revisions\/3976"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/media\/1683"}],"wp:attachment":[{"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/media?parent=3975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/categories?post=3975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/the-jena-experiment.de\/index.php\/wp-json\/wp\/v2\/tags?post=3975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}