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.
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