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University of Arizona (1969)

Some effects of mechanical evaporation barriers on fish growth and pond productivity

Lewis, Steven A.

Titre : Some effects of mechanical evaporation barriers on fish growth and pond productivity.

Auteur : Lewis, Steven A.

Université de soutenance : University of Arizona

Grade : Master of Science (MS) 1969

Résumé
Four experiments were conducted to evaluate some of the effects of mechanical evaporation barriers on fish growth and pond productivity. Barrier coverages above 5O7 reduced fish growth, fish survival, aquatic insect yields, gross photosynthesis, dissolved oxygen concentrations, temperatures, and habitat areas. These reductions appeared to correlate with decreased amounts of light entering each pond. Zooplankton numbers, phytoplankton chlorophyll concentrations, pH, and turbidity measurements were not significantly affected at any coverage level.

Mots clés : Hydrology. ; Fish culture. ; Fish populations. ; Fish ponds.

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Page publiée le 22 juin 2018