Supporting Information Sherwood et alpnasSI Text 1 Construction of δ15 N Time Series. The recent (AD 1926–2001) bulk δ15 N stable isotope record (Fig. S1) was derived from six specimens of P. r

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Date: 2011-01-03 06:52:02		Supporting Information Sherwood et alpnasSI Text 1 Construction of δ15 N Time Series. The recent (AD 1926–2001) bulk δ15 N stable isotope record (Fig. S1) was derived from six specimens of P. r Add to Reading List Source URL: www.pnas.org Download Document from Source Website File Size: 611,06 KB Share Document on Facebook