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Gurevitch, J., L.L. Morrow, A. Wallace and J. Walsh. 1992. A metaanalysis of competition field experiments. Am. Nat. 140:539–572. Walsh J. A metaanalysis of competition field
Species richness, resource availability, and disturbance are the primary factors considered in assessing the invasibility of plant communities. Nonetheless, the density of individuals in a community is a common and easy trait to measure. The ecological significance of the density of both native and invasive tree species was assessed using a systematic review and formal meta-analysis. The densities of recipient communities and invasive exotic tree species in novel ranges were identified in the published literature. In addition, we compared by means of a meta-analysis: (i) densities of invasive versus native species in invaded communities; (ii) densities of native species in invaded versus uninvaded communities; and (iii) densities of invasive species along distance gradients from initial locus of invasion. Invasive trees were found at higher densities than native species in recipient communities. Invasions by woody species were also recorded in communities with relatively low densities of natives suggesting that (i) low density forests may be more susceptible to invasion and/or (ii) density of the recipient community may be reduced during the invasion process. In addition, comparison of native species densities between invaded and uninvaded stands from the same community suggests that invasive trees negatively affect density of native trees once established. Therefore, the widely reported low density and often richness of native plants in invaded communities cannot be directly linked to ecosystem susceptibility to invasion without considering concomitant impacts. These findings suggest that density is a key preliminary determinant or factor which should be considered when assessing tree invasion dynamics.
947 955 Glass, G. V. 1976. Primary, secondary and meta-analysis of research. Educational Researcher 5: 3-8. Primary, secondary and meta-analysis of
Al-Inany, H., Aboulghar, M., Mansour, R., Serour, G. (2003) Meta-analysis of recombinant versus urinary-derived FSH: an update. Hum. Reprod. 18 , 305–313. Serour G. Meta-analysis
R , Szoke A , Leboyer M , de Haan L : Beyond the association. Toxoplasma gondii in schizophrenia, bipolar disorder, and addiction: systematic review and metaanalysis . Acta Psychiatr Scand 132 , 161 – 179 ( 2015 ) 9
A , Cannon MJ : Review and meta-analysis of the epidemiology of congenital cytomegalovirus (CMV) infection . Rev Med Virol 17 , 253 – 276 ( 2007 ) 9
niche concepts . Ecography 39 : 1034 – 1041 . Sekar , S. 2012 . A meta-analysis of the traits affecting dispersal ability in butterflies: can wingspan be used
. , Robert , O. 2013 . Association mapping and meta-analysis: two complementary approaches for the detection of reliable Septoria tritici blotch quantitative resistance in bread wheat ( Triticum aestivum L.) . Mol. Breed. 32 : 563 – 584
bloodstream infections: a meta-analysis . Clin Infect Dis 41 , 327 – 333 ( 2005 ) 24. Prematunge C , MacDougall C , Johnstone J , Adomako K , Lam
Turkey [ 15 ] and Germany [ 16 ]. However, a meta-analysis that assessed this association showed no significant association [ 17 ]. In another study, 50 patients with multiple sclerosis and 50 family members in Iran were tested for T. gondii serology
