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Science 22 February 2008:
Vol. 319. no. 5866, p. 1039
DOI: 10.1126/science.319.5866.1039a
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Letters
The Legitimacy of Genetic Ancestry Tests
Tony Frudakis; Response Deborah A. Bolnick, Duana Fullwiley, Jonathan Marks, Susan M. Reverby, Jonathan Kahn, Kimberly Tallbear, Jenny Reardon, Richard S. Cooper, Troy Duster, Joan H. Fujimura, Jay S. Kaufman, Ann Morning, Alondra Nelson, Pilar Ossorio |
Soil Erosion: A Carbon Sink or Source?
Rattan Lal and David Pimentel; Response Kristof Van Oost, Johan Six, Gerard Govers, Tim Quine, S. De Gryze |
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Technical Comment Abstracts
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COMMENT ON ""International Conservation Policy Delivers Benefits for Birds in Europe"
Rolando Rodríguez-Muñoz, Alfredo F. Ojanguren, Tom Tregenza
Abstract: Donald et al. (Reports, 10 August 2007, p. 810) assessed the impact of the European Union's Birds Directive, a conservation policy enacted in 1979, and reported evidence for positive population changes in targeted species. We argue that their conclusions are overstatements based on unsuitable data and inappropriate analyses.
Full text at www.sciencemag.org/cgi/content/full/319/5866/1042b
RESPONSE TO COMMENT ON "International Conservation Policy Delivers Benefits for Birds in Europe"
Paul F. Donald, Fiona J. Sanderson, Ian J. Burfield, Stijn M. Bierman, Richard D. Gregory, Zoltan Waliczky
Abstract: Rodríguez-Muñoz et al. raise concerns about our study on the effectiveness of the European Union's Birds Directive, based on the provenance of the trend data used and on the predictions that were tested. Here, we show that our based on the provenance of the trend data used and on the predictions that were tested. Here, we show that our methods stem largely from misunderstandings of the original paper.
Full text at www.sciencemag.org/cgi/content/full/319/5866/1042c
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