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Principles and Standards for Measuring Primary Production$
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Timothy J. Fahey and Alan K. Knapp

Print publication date: 2007

Print ISBN-13: 9780195168662

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780195168662.001.0001

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Measuring Freshwater Primary Production and Respiration

Measuring Freshwater Primary Production and Respiration

(p.175) 10 Measuring Freshwater Primary Production and Respiration
Principles and Standards for Measuring Primary Production

Robert O. Hall Jr.

Serge Thomas

Evelyn E. Gaiser

Oxford University Press

Despite a long history of research, measurements of the metabolism of freshwater ecosystems have undergone many recent methodological improvements that are summarized in this chapter. After describing some relevant considerations about the dynamics of lake and streams, the recommended methods for primary production measurement are detailed. Whole-ecosystem methods of gas exchange are examined, including problems of reaeration and error estimation. An overview of chamber methods using O2 and 14C is provided, including problems of scaling up. Recent advances in microscale methods including oxygen electrodes and fluorometry are described.

Keywords:   metabolism, reaeration, chambers, 14C, whole-ecosystem, fluorometry, oxygen electrode

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