SEASONAL FLUCTUATION OF PLANKTONIC ROTIFERS IN AZIBO RESERVOIR (PORTUGAL)

• Type: Article in International Scientific Journal
• Date: 1994

Authors

Vitor Manuel Vasconcelos (Author) Other

Journal

Title: Hydrobiologia

Vol. 294

Pages: 177-184

ISSN: 0018-8158

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 5 Citations

Other information

Authenticus ID: P-001-J6P

DOI: 10.1007/bf00021290

Abstract (EN): The rotifers of the recently-commissioned Azibo reservoir were studied during two years. The community was similar to that of other portuguese reservoirs with Keratella cochlearis, Polyarthra spp., Asplanchna priodonta and Collotheca pelagica dominant, although densities varied strongly. Maximum rotifer density was 640 ind l-1 in 1987 and 315 ind l-1 in 1988. During the first year two density peaks were observed, while in the second year fluctuations were irregular. Phytoplankton availability was considered the main reason for the fluctuation of rotifer density, although temperature, dissolved oxygen and cladoceran interference may also have played a role. A high density of Anabaena flos-aquae might have facilitated the dominance of K. cochlearis in 1988.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8