, 1611 (2013); 339 Science et al. Laura A. Burkle Co-Occurrence, and Function Plant-Pollinator Interactions over 120 Years: Loss of Species, This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Pe...