Seasonal variation of the abiotic parameters and the cladoceran assemblage of Lake Vela: comparison with previous studies

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Antunes, SC (Author) Other; Abrantes, N (Author) Other; Goncalves, F (Author) Other

Journal

Title: Annales de Limnologie

Vol. 39

Pages: 255-264

ISSN: 0003-4088

Publisher: EDP Sciences

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 16 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-000-J54

DOI: 10.1051/limn/2003020

Abstract (EN): Lake Vela is a shallow lake facing eutrophication, like many other freshwater reservoirs. A reduction in biodiversity has been observed and cyanobacterial blooms are frequent, occasionally leading to large fish kills. An annual sampling cycle was carried out in the present study, with the aim of understanding the present seasonal variation of Lake Vela's physico-chemistry and cladoceran assemblage. The present results were compared with those obtained in previous studies. Presently, Lake Vela is facing higher nutrient and Chl a levels than in past years. The cladoceran assemblage is now dominated by small-bodied forms, such as Chydoridae and Bosmina longirostris, except in the spring peak of Daphnia longispina. Still, the seasonal pattern of the cladoceran community is more or less coherent with the general model observed in other temperate lakes. The results also suggest that this was a rather unusual year, with a Daphnia summer peak, probably because of a large fish kill that occurred in late spring.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10