ISSN:
1573-5117
Keywords:
Primary productivity
;
Community respiration
;
Methods
;
Streams
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Carbon dioxide and oxygen exchange procedures for measuring community metabolism (two open stream methods and three chamber methods) were compared on the same reach of a third-order stream. Open stream methods were complicated by high diffusion rates and yielded net community primary productivity estimates lower than those obtained with chamber methods. Chamber methods yielded variable productivity and respiration data. However, when normalized for chlorophyll a, productivity estimates from the chamber methods were within an expected range for the system. Balances of photosynthesis and respiration from the chamber methods were similar between methods and indicated that autotrophic or heterotrophic processes could dominate the system. Considerations in applying the various procedures are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00018681
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