The Role of Tourism and Recreation in the Spread of Non-Native Species: A Systematic Review and Meta-Analysis Anderson, Lucy G. ; Rocliffe, Steve ; Haddaway, Neal R. ; Dunn, Alison M. Abstract Publication: PLoS ONE Pub Date: October 2015 DOI: 10.1371/journal.pone.0140833 Bibcode: 2015PLoSO..1040833A