By James R. Barnes, G. Wayne Minshall
Most of the papers integrated right here have been a part of the Plenary Sym posium at the checking out of common Ecological conception in Lotic Ecosys tems held together with the twenty ninth Annual assembly of the North American Benthological Society in Provo, Utah, April 28, 1981. Sev eral extra papers have been solicited, from famous leaders in yes components of specialization, with a view to around out the insurance. all the articles were critiqued via no less than or 3 re audience and an attempt used to be made to depend upon experts in flow and theoretical ecology. In all situations this has helped to insure accur acyand to enhance the general caliber of the papers. besides the fact that, as one among our reasons has been to inspire thought-provoking or even debatable insurance of the themes, fabric has been retained although it may possibly dissatisfied yes serious readers. it really is our wish that those shows will stimulate additional study, inspire the fuller improvement of a theoretical standpoint between lotic ecologists, and bring about the checking out of normal ecological theories within the circulation environment.
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Example text
E. Likens. 1973. Carbon in the biota, pp. 281-301. In: G. M. Woodwe11 and E. V. ), . Carbon in the biosphere. C. Techn. Information Center, Washington. Whittaker, R. H. and P. L. Marks. 1975. Methods of assessing terrestrial productivity, pp. 55-118. In: H. Lieth and R. H. ), Primary productivity in the biosphere. Springer-Verlag, New York. Wong, S. L. and B. Clark. 1976. Field determination of the critical nutrient concentration for Cladophora in streams. J. Fish. Res. Bd. Can. 33:85-92. Wong, S.
Oceanogr. 18:1-14. Busch, D. E. and S. G. Fisher. 1981. Metabolism of a desert stream. Freshwat. Bio1. 11:301-307. Canter, H. M. and J. W. G. Lund. 1948. Studies on plankton parasites. I. Fluctuations in the number of Asterione11a formosa Hass. in relation to fungal epidemics. New Phytol. 47:238-261. Chang, W. Y. B. 1981. Path analysis of factors affecting primary productivity. J. Freshwater Eco1. 1:113-120. Collins, M. 1978. Algal toxins. Microbio1. Rev. 42:725-746. Cummins, K. W. 1974. Structure and function of stream ecosystems.
Further downstream a return to dominance of respiration was expected as river depth and turbidity increased. , in review). Some of the important factors regulating primary productivity in terrestrial and aquatic systems will then be discussed. This treatment, while cursory, is intended to stimulate recognition of analogous or contrasting features in different habitats and encourage the transfer of ideas across system boundaries. Lastly, some areas of research need are highlighted. COMPARISON OF PRIMARY PRODUCTIVITY IN STREAMS WITH OTHER SYSTEMS Primary productivity is defined as the rate of conversion of solar energy to reduced chemical energy through photosynthesis.