Toxicity evaluation of natural samples from the vicinity of rice fields using two trophic levels

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Catarina R Marques (Author) Other; Ruth Pereira (Author) FCUP; Fernando Goncalves (Author) Other

Journal

Title: Environmental Monitoring and Assessment

Vol. 180

Pages: 521-536

ISSN: 0167-6369

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 11 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-002-NE2

DOI: 10.1007/s10661-010-1803-y

Abstract (EN): An ecotoxicological screening of environmental samples collected in the vicinity of rice fields followed a combination of physical and chemical measurements and chronic bioassays with two freshwater trophic levels (microalgae: Pseudokirchneriella subcapitata and Chlorella vulgaris; daphnids: Daphnia longispina and Daphnia magna). As so, water and sediment/soil elutriate samples were obtained from three sites: (1) in a canal reach crossing a protected wetland upstream, (2) in a canal reach surrounded by rice fields and (3) in a rice paddy. The sampling was performed before and during the rice culture. During the rice cropping, the whole system quality decreased comparatively to the situation before that period (e.g. nutrient overload, the presence of pesticides in elutriates from sites L2 and L3). This was reinforced by a significant inhibition of both microalgae growth, especially under elutriates. Contrary, the life-history traits of daphnids were significantly stimulated with increasing concentrations of water and elutriates, for both sampling periods.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16