Skip to Main Content
Staged invasions across disparate grasslands: Effects of seed provenance, consumers and disturbance on productivity and species richnessAuthor(s): John L. Maron; Harald Auge; Dean E. Pearson; Lotte Korell; Isabell Hensen; Katharine N. Suding; Claudia Stein
Source: Ecology Letters. 17: 499-507.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
View PDF (266.26 KB)
DescriptionExotic plant invasions are thought to alter productivity and species richness, yet these patterns are typically correlative. Few studies have experimentally invaded sites and asked how addition of novel species influences ecosystem function and community structure and examined the role of competitors and/or consumers in mediating these patterns. We invaded disturbed and undisturbed subplots in and out of rodent exclosures with seeds of native or exotic species in grasslands in Montana, California and Germany. Seed addition enhanced aboveground biomass and species richness compared with no-seeds-added controls, with exotics having disproportionate effects on productivity compared with natives. Disturbance enhanced the effects of seed addition on productivity and species richness, whereas rodents reduced productivity, but only in Germany and California. Our results demonstrate that experimental introduction of novel species can alter ecosystem function and community structure, but that local filters such as competition and herbivory influence the magnitude of these impacts.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMaron, John L.; Auge, Harald; Pearson, Dean E.; Korell, Lotte; Hensen, Isabell; Suding, Katharine N.; Stein, Claudia. 2014. Staged invasions across disparate grasslands: Effects of seed provenance, consumers and disturbance on productivity and species richness. Ecology Letters. 17: 499-507.
Keywordscommunity assembly, exotic species, grasslands, invasion, local filters, plant competition, plant productivity, small mammals, species richness
- Rodent seed predation as a biotic filter influencing exotic plant abundance and distribution
- The fluctuating resource hypothesis explains invasibility, but not exotic advantage following disturbance
- Herbicide and Native Grass Seeding Effects on Sulfur Cinquefoil (Potentilla recta)Infested Grasslands
XML: View XML