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Science  29 Apr 2005:
Vol. 308, Issue 5722, pp. 631
DOI: 10.1126/science.308.5722.631a

Letters in This Issue

A Cry for Help from Kansas

Eric Reynolds

What Causes Lesions in Sperm Whale Bones?

Bruce M. Rothschild; Edward D. Mitchell. Response Michael J. Moore and Greg A. Early

Ethics of Tobacco Company Funding

Jed E. Rose

Merits of a New Drug Trial for ALS?

Ettore Beghi, Caterina Bendotti, Tiziana Mennini. Response Tim Miller and Don Cleveland

Corrections and Clarifications

Technical Comment Abstracts

Technical Comment Abstracts

Comment on “Ecosystem Properties and Forest Decline in Contrasting Long-Term Chronosequences”

Kanehiro Kitayama.

Abstract: Wardle et al. (Reports, 23 July 2004, p. 509) demonstrated that forest decline following a transient peak biomass is a common forest ecosystem dynamic caused by increased soil-phosphorus limitation over time. However, the decline they observed is attributable to the lack of phosphorus use-efficient species, and is confined to regions of low tree species diversity.

Full text at www.sciencemag.org/cgi/content/full/308/5722/633b

Response to Comment on “Ecosystem Properties and Forest Decline in Contrasting Long-Term Chronosequences”

D. A. Wardle, L. R. Walker, R. D. Bardgett.

Abstract: Kitayama correctly recognizes that our study did not include hyperdiverse tropical forests. However, the data set he uses to test our ideas for tropical forests is not relevant to the spatial scale that we considered, and the mechanism that he proposes for these forests is not supported by current ecological theory.

Full text at www.sciencemag.org/cgi/content/full/308/5722/633c

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