3 years ago



Greenberg, R. and S.

Greenberg, R. and S. Droege. 1999. On the decline of the Rusty Blackbird and the use of ornithological literature to document long-term population trends. Conservation Biology 13(3): 553–559. Griffiths, J. 2012. The tree is dead, long live the tree: Do monarchs prefer or simply use Eucalyptus for overwintering roosts? Presentation at Monarch Biology and Conservation Meeting, Chanhassen MN. Available from (accessed March 2013). Griffiths, J., and F. Villablanca 2013. Management of monarch butterfly (Danaus plexippus) overwintering habitat: Recommendations based on patterns of tree use. Monarch Alert, California Polytechnic State University, San Luis Obispo, CA. Available from and Villablanca 2013 Eucalyptus White Paper.pdf (accessed May 28, 2014). Griffiths, J.L. and F.X. Villablanca. Tree use by western monarch butterflies in core overwintering habitat. (in preparation). Groenendijk, D., M. Van Mannekes, M. Vaal, and M. Van den Berg. 2002. Butterflies and insecticides: a review and risk analysis of modern Dutch practice. In Proceedings of the Section Experimental and Applied Entomology of the Netherlands Entomological Society (NEV) 13:9- 34. Guerra, P.A., R.J. Gegear, and S.M. Reppert. 2014. A magnetic compass aids monarch butterfly migration. Nature Communications 5(4164): 2041-1723. Guerra, P.A., and S.M. Reppert. 2013. Coldness Triggers Northward Flight in Remigrant Monarch Butterflies. Current Biology 23:419–423. Available from (accessed June 11, 2013). Guiney, M., and K. Oberhauser. 2009. Insects as flagship conservation species. Terrestrial Arthropod Reviews 1:111–123. Available from (accessed August 29, 2013). Haeger, J. F., D. Jordano, and M. L. Meléndez. 2011. Status and conservation of Asclepiadaceae and Danaus in southern Spain. Journal of Insect Conservation 15:361–365. Available from (accessed June 11, 2013). Hallmann, C.A., R.P. Foppen, C.A. van Turnhout, H. de Kroon, and E. Jongejans. 2014. Declines in insectivorous birds are associated with high neonicotinoid concentrations. Nature doi:10.1038/nature13531 Hartzler, R.G. 2010. Reduction in common milkweed (Asclepias syriaca) occurrence in Iowa cropland from 1999 to 2009. Crop Protection 29:1542–1544. Available from (accessed June 11, 2013). Monarch ESA Petition 126

Hartzler, R.G., and D.D. Buhler. 2000. Occurrence of common milkweed (Asclepias syriaca) in cropland and adjacent areas. Crop Protection 19:363–366. Available from (accessed June 11, 2013). Harvey, R.G., P.L. Howell, C. Morgenstern, and F.J. Mazzotti. 2009. Native Habitats for Monarch Butterflies in South Florida, WEC266. University of Florida. Available from (accessed June 11, 2013). Hebert, V. 2004. Regional off–target movement of auxin–type herbicides. Proceedings of the International Conference on Pesticide Application for Drift Management, Kona, Hawaii. Henderson, A.M., J.A. Gervais, B. Luukinen, K. Buhl, and D. Stone. 2010. Glyphosate Technical Fact Sheet; National Pesticide Information Center, Oregon State University Extension Services. Hill, B.D., K.N. Harker, P. Hasselback, et al. 2002. Phenoxy herbicides in Alberta rainfall: Potential effects on sensitive crops. Canadian Journal of Plant Science 82:481–484. Hill Jr, H.F., A.M. Wenner, and P.H. Wells. 1976. Reproductive behavior in an overwintering aggregation of monarch butterflies. American Midland Naturalist (1976): 10-19. Hladik, M.L., D.W. Kolpin, and K.M. Kuivila. 2014. Widespread occurrence of neonicotinoid insecticides in streams in a high corn and soybean producing region, USA. Environmental Pollution 193(2014): 189-196. Holterman, H.J., J.C. Van De Zande, H.A J. Porskamp, and J.F.M. Huijsmans. 1997. Modeling spray drift from boom sprayers. Computers and Electronics in Agriculture 19(1):1-22. Hopwood J, S.H. Black, M. Vaughn, E. Lee-Mäder. 2013. Beyond the Birds and the Bees: Effects of Neonicotinoid Insecticides on Agriculturally Important Beneficial Invertebrates. The Xerces Society for Invertebrate Conservation. Available from (accessed August 20, 2014). Hopwood J, and M. Shepherd. 2012. Neonicotinoids in Your Garden.: Effects of Neonicotinoid Insecticides on Agriculturally Important Beneficial Invertebrates,The Xerces Society for Invertebrate Conservation. Wings, Fall 2012: 22. Hopwood J, M. Vaughan, M. Shepherd, D. Biddinger, E. Mäder, S.H. Black, C. Mazzacano. 2012. Are Neonicotinoids Killing Bees? A Review of Research into the Effects of Neonicotinoid Insecticides on Bees, with Recommendations for Action. The Xerces Society for Invertebrate Conservation. Available from Neonicotinoids-Killing-Bees_Xerces-Society1.pdf (accessed August 20, 2014). Howard, E., and A.K. Davis. 2004. Documenting the Spring Movements of Monarch Butterflies: Journey North, a Citizen Science Program. Pages 105 – 114 in K.S. Oberhauser and M.J. Monarch ESA Petition 127

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