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Invasion‐resistance in experimental grassland communities: species richness or species identity?
Author(s) -
Crawley,
; Brown,
Heard,
G. R. Edwards
Publication year - 1999
Publication title -
ecology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.852
H-Index - 265
eISSN - 1461-0248
pISSN - 1461-023X
DOI - 10.1046/j.1461-0248.1999.00056.x
Subject(s) - species richness , ecology , grassland , resistance (ecology) , biomass (ecology) , biology , community , biodiversity , geography , community structure , ecosystem
The question as to why some communities are more invasible than others has pro‐found implications for conservation biology and land management. The theoretical issues involved go right to the heart of our understanding of species coexistence and community assembly. The experiment reported here indicates that for productive, small‐scale grassland plots, species identity matters more than species richness in determining both the number of invading species and the total biomass of invasives.