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Status of Pollinators in North America
Zayed, A., and L. Packer. 2005. Complementary sex determination substantially increases extinction proneness of haplodiploid populations. Proceedings of the National Academy of Sciences USA 102: 10742–10746.
Zayed, A., D.W. Roubik, and L. Packer. 2004. Use of diploid male frequency data as an indicator of pollinator decline. Proceedings of the Royal Society of London Series B—Biological Sciences 271:S9–S12.
Zedler, J.B., and J.C. Callaway. 1999. Tracking wetland restoration: Do mitigation sites follow desired trajectories? Restoration Ecology 7(1): 69–73.
Zimmerman, M., and G.H. Pyke. 1988. Reproduction in Polemonium: assessing the factors limiting seed set. American Naturalist 131: 732–738.
