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New and recycled primary production in an oligotrophic lake: Insights for summer phosphorus dynamics

New and recycled primary production in an oligotrophic lake: Insights for summer phosphorus dynamics Primary production that is supported by new inputs of nutrients from outside the system is distinct from production that is supported by remineralization of nutrients within the system. We applied the concept of new production to Mirror Lake, New Hampshire, and our view of P dynamics in this lake was altered dramatically. New production during midsummer put a large demand on P in surface waters, removing 37 µmol P m−2 d−1. Without new inputs of P, the P content of surface waters would drop to zero in < 1 month. There is, however, a slight increase, not a decrease, in P content of surface waters during summer stratification. Inputs to surface waters during summer months must, therefore, be large. We now believe that higher than average P loading to the lake occurs in summer, despite low runoff inputs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Limnology and Oceanography Wiley

New and recycled primary production in an oligotrophic lake: Insights for summer phosphorus dynamics

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References (26)

Publisher
Wiley
Copyright
© 2014, by the Association for the Sciences of Limnology and Oceanography
ISSN
0024-3590
eISSN
1939-5590
DOI
10.4319/lo.1992.37.3.0590
Publisher site
See Article on Publisher Site

Abstract

Primary production that is supported by new inputs of nutrients from outside the system is distinct from production that is supported by remineralization of nutrients within the system. We applied the concept of new production to Mirror Lake, New Hampshire, and our view of P dynamics in this lake was altered dramatically. New production during midsummer put a large demand on P in surface waters, removing 37 µmol P m−2 d−1. Without new inputs of P, the P content of surface waters would drop to zero in < 1 month. There is, however, a slight increase, not a decrease, in P content of surface waters during summer stratification. Inputs to surface waters during summer months must, therefore, be large. We now believe that higher than average P loading to the lake occurs in summer, despite low runoff inputs.

Journal

Limnology and Oceanography – Wiley

Published: May 1, 1992

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