344 
THE WILSON JOURNAL OF ORNITHOLOGY • Vol. 124. No. 2. June 2012 
Tye, A. 2001. Invasive plant problems and requirements for 
weed risk assessment in the Galapagos Islands. Pages 
153-175 in Weed risk assessment (R. H. Groves, F. D. 
Panetta, and J. G. Virtue. Editors). CS1RO Publishing, 
Collingwood. Australia. 
ViTOt'SEK, P. M., C. M. D'Antonio, L. L. Loope, M. 
RejmAnek, and R. Westbrooks. 1997. Introduced 
species: a significant component of human-caused 
global change. New Zealand Journal of Ecology 21 • 
1-16. 
Westcott. D. A. and C. S. Fletcher. 2011. Biological 
invasions and the study of vertebrate dispersal oi 
plants: opportunities and integration, Acta Occologh 
37:650-656. DOI: 10.1016/j.actao.2011.04,007. 
Ziegler, W. 1995. El Archipiclago de las Galipagw. 
Ubicacion, clima, condicioncs atmosfcricas y origm 
geoldgico. Pages 17-53 in Flora y Fauna de las bias 
Galapagos: origen. invcsligacidn. amena/as y rrotre- 
cidn (G. Zizka and K. Klernmer, Editors). Palmrnpr- 
ten der Stadt. Frankfurt am Main, Germany. 
