SPECIES COMPOSITION AND DYNAMICS OF THE PHYTOPLANKTON IN A RECENTLY-COMMISSIONED RESERVOIR (AZIBO - PORTUGAL)

• Type: Article in International Scientific Journal
• Date: 1991

Authors

vasconcelos, vm (Author) FCUP

Journal

The Journal is awaiting validation by the Administrative Services.

Title: ARCHIV FUR HYDROBIOLOGIE

Vol. 121

Pages: 67-78

ISSN: 0003-9136

Indexing

ISI Web of Knowledge - 12 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-001-QWP

Abstract (EN): The phytoplankton community of the recently constructed Azibo Reservoir was studied during a two-year period in relation to some physical and chemical properties of the water. The pattern of variation of the phytoplankton community was not regular through time. In the first year, the community was quite diverse with Chlorophyceae, Bacillariophyceae and Cryptophyceae as the main groups, with some Chrysophyceae and Dinophyceae. In the second year, the major groups were Bacillariophyceae in winter and spring and Cyanobacteria in summer. This shift in dominance was probably mediated by changes in the P, N and Si loads, and by weather conditions, namely the extremely low amount of rainfall during the 1988 spring and summer. The high consumption of silica by Asterionella formosa during the 1988 winter seems to be the main cause of the decline of diatoms in the following summer.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12