Impact of Nitrogen Deposition on the Species Richness of Grasslands

Carly J. Stevens; Nancy B. Dise; J. O. Mountford; David Gowing

doi:10.1126/science.1094678

Abstract

A transect of 68 acid grasslands across Great Britain, covering the lower range of ambient annual nitrogen deposition in the industrialized world (5 to 35 kg Nha –1 year –1 ), indicates that long-term, chronic nitrogen deposition has significantly reduced plant species richness. Species richness declines as a linear function of the rate of inorganic nitrogen deposition, with a reduction of one species per 4-m 2 quadrat for every 2.5 kg Nha –1 year –1 of chronic nitrogen deposition. Species adapted to infertile conditions are systematically reduced at high nitrogen deposition. At the mean chronic nitrogen deposition rate of central Europe (17 kg Nha –1 year –1 ), there is a 23% species reduction compared with grasslands receiving the lowest levels of nitrogen deposition.

Keywords

Species richnessDeposition (geology)NitrogenTransectQuadratEnvironmental scienceEcosystemEcologyAgronomyEnvironmental chemistryChemistryBiology

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Publication Info

Year: 2004
Type: article
Volume: 303
Issue: 5665
Pages: 1876-1879
Citations: 1513
Access: Closed

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APA Style

                            
                                
                                    Carly J. Stevens, 
                                
                                    Nancy B. Dise, 
                                
                                    J. O. Mountford
                                
                                et al.
                            
                            (2004). 
                            Impact of Nitrogen Deposition on the Species Richness of Grasslands. 
                            Science
                            , 303
                            (5665)
                            , 1876-1879.
                            https://doi.org/10.1126/science.1094678
                        

Identifiers

DOI: 10.1126/science.1094678