Primary production in ten reservoirs in southern Brazil

✍ Scribed by Sônia Maria F. Gianesella-Galvão

• Book ID: 104615093
• Publisher: Springer
• Year: 1985
• Tongue: English
• Weight: 464 KB
• Volume: 122
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00018962

✦ Synopsis

The pytoplankton primary production of ten reservoirs in S f o Paulo State was measured using the I4C method. Production rates, depth profiles and integral productivity were analysed with respect t o chlorophylla data and various abiotic environmental factors.

Productivity was low (except in Americana Reservoir), and peaked in summer. Maximum production rates in the depth profiles ranged from 0.8 t o 160.3 mgCm h ' , and integral production from 0.8 to 92.1 mgCm h I . Nanoplankton was responsible for most of the primary production.

Nutrients (especially phosphorus) were the principal factors limiting production but turbidity was often critical during winter (monomictic reservoirs) and at other times (polymictic examples).