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HBR

Shifting Songbirds

Hubbard Brook scientists have produced the longest continuous songbird record in North America and discovered that changing habitat, land use practices, and climate in eastern forests, tropical forests, and migratory routes drive the abundance of these beloved forest musicians.

Holmes, R. T. 2010. Birds in northern hardwoods ecosystems: Long-term research on population and community processes in the Hubbard Brook Experimental Forest. Forest Ecology and Management doi:10.1016/j.foreco.2010.06.021
Holmes, R.T., 2007. Understanding population change in migratory songbirds: long-term and experimental studies of Neotropical migrants in breeding and wintering areas. Ibis 149 (Suppl. 2), 2-13.
Male Black-throated Blue Warbler feeding nestlings. Nests of this species are built typically less than one meter above ground in a shrub such as hobblebush (Viburnum alnifolium)
N. Rodenhouse
Forty-year of bird abundance on the long-term study plot at the Hubbard Brook Experimental Forest, New Hampshire, 1969-2008, and 15-year trends on three replicate study plots elsewhere in the White Mountains National Forest, 1986-2000. Y- axis shows total adults (males plus females for all species combined) occupying the 10-ha study plots.
Holmes, R. T. 2010. Birds in northern hardwoods ecosystems: Long-term research on population and community processes in the Hubbard Brook Experimental Forest. Forest Ecology and Management doi:10.1016/j.foreco.2010.06.021 Groffman, P.M., C.T. Driscoll, T.J. Fahey, J.P. Hardy, R.D. Fitzhugh, G.L. Tierney. 2001. Colder soils in a warmer world: A snow manipulation study in a northern hardwood forest ecosystem. Biogeochemistry 56:135-150. Fitzhugh, R.D., C. T. Driscoll, P. M. Groffman, G. L. Tierney, T. J. Fahey and J. P. Hardy. 2001. Effects of soil freezing disturbance on soil solution nitrogen, phosphorus, and carbon chemistry in a northern hardwood ecosystem. Biogeochemistry 56:215-238.

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