Outdoor Experimental Ponds (Mesocosms) Designed for Long-Term Ecotoxicological Studies in Aquatic Environment

Caquet, Th.; Lagadic, Laurent; Jonot, Odile; Baturo, Wojciech; Kilanda, Miranda; Simon, Pierre; Bras, S. Le; Echaubard, Michel; Ramade, François

doi:10.1006/eesa.1996.0053

Cited by 38 publications

(32 citation statements)

References 4 publications

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“…Microcosms are considered realistic environmental conditions and highly ecologically of representative of in situ experiments (Bloesch et al, 1988;Caquet et al, 1996;Sugiura, 1996). Microcosm experiments are implemented under complex, near-natural conditions to avoid the limitations of laboratory experiments.…”

Section: Discussionmentioning

confidence: 99%

Growth Control of Cyanobacteria by Three Submerged Macrophytes

Hai-ou

Zhong

Yan

et al. 2012

Environmental Engineering Science

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To illustrate the control of harmful cyanobacterial growth and the removal of nutritients from fresh water, three submerged macrophytes were grown in the raw water of Guishui Lake. Lindernia rotundifolia, Hygrophila stricta, and Cryptocoryne crispatula were grown together in situ to assess their effectiveness in nutrient removal in microcosms. Results revealed the inhibitory effects of these species on cyanobacterial growth. In addition, water quality in the planted microcosms showed improvement when compared to the water quality of the unplanted microcosm. At all treatments studied, the chemical oxygen demand in the planted microcosms was lower than that in the unplanted microcosms, and the removal rate of all the nitrogen and phosphate in the planted microcosms was better than that of the microcosm without plants. Our study offers a useful algal control method for the lakes or reservoirs that suffer from harmful cyanobacterial blooms.

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Section: Discussionmentioning

confidence: 99%

Growth Control of Cyanobacteria by Three Submerged Macrophytes

Hai-ou

Zhong

Yan

et al. 2012

Environmental Engineering Science

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“…Due to the variety of modes of action of chemicals, ecotoxicological studies in mesocosms usually investigate a broad spectrum of biological indicators (CAQUET et al, 1996 ;HILL et al, 1994). Accordingly, studies on mosquitofish should not preclude studies on other indicating species.…”

Section: Discussionmentioning

confidence: 99%

Development of mosquitofish (Gambusia affinis holbrooki) populations in lentic mesocosms. Perspectives for ecotoxicological studies

Drèze¹,

Gaulay²,

Monod³

1998

Bull. Fr. Pêche Piscic.

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In the perspective of ecotoxicological assays in mesocosms, the development of mosquitofish populations (Gambusia affinis holbrooki) has been assessed. The objective was to evaluate the ability of fish to reproduce in these experimental ponds under the climatic conditions of Brittany, and to see if population size and individual criteria were related to the number of adults initially introduced. Six mesocosms (3.2 m diameter and 0.7 m water depth) similarly designed received sexually mature mosquitofish at the rate of 12 (6 females and 6 males), 6 (3 females and 3 males) and 2 (1 female and 1 male) in June 1996. Each assay was duplicated. In December 1996, the entire populations were collected and the weight, size and sex of the individuals were noted. Length-frequency distributions were relatively similar between mesocosms and the different mode groups showed that the reproductive activity occurred until the beginning of fall. The produced biomass (from 4.1 to 38.3 g) and number of fish collected (from 26 to 301) were statistically correlated to the number of pairs initially introduced. This study provides interesting perspectives for ecotoxicological investigations in which the effects of pollutants on mosquitofish would be assessed at the population level.Key-words : fish, Gambusia affinis holbrooki, mesocosm, population, reproduction. DÉVELOPPEMENT DE POPULATIONS DE GAMBUSIE (GAMBUSIA AFFINIS HOLBROOKI) DANS DES MÉSOCOSMES LENTIQUES. PERSPECTIVES POUR DES ÉTUDES ÉCOTOXICOLOGIQUES. RÉSUMÉDans la perspective d'études écotoxicologiques en mésocosmes, le potentiel de développement de populations de gambusie (Gambusia affinis holbrooki) a été évalué. L'objectif était de savoir si la gambusie se reproduisait dans ces systèmes expérimentaux soumis aux conditions climatiques de la Bretagne, et si l'effectif final et la biomasse des populations étaient proportionnels au nombre de géniteurs initialement introduits. Six mésocosmes (3,2 m de diamètre et 0,7 m de hauteur d'eau) constitués de façon identique ont reçu en juin 1996 des géniteurs de gambusie, à raison de 12 (6 femelles et 6 mâles), 6 (3 femelles et 3 mâles) et 2 (1 femelle et 1 mâle) individus par mésocosme. Chaque essai a été réalisé en duplicat. En décembre 1996, les populations ont été Article available at

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“…1. Various levels of biological complexity in the experimental methods used in ecotoxicology (from Caquet et al, 1996) Many studies are based on single-species tests, and these are usually considered to concern environmental toxicology rather than ecotoxicology (Ramade, 2007). These studies are fundamentally reductionist, and they give priority to the reproducibility of the data acquired (single-species tests and microcosm experiments).…”

Section: The Main Methods Used To Estimate the Impact Of Herbicides Omentioning

confidence: 99%

Herbicide Contamination of Freshwater Ecosystems: Impact on Microbial Communities

Villeneuve¹,

Larroudé²,

Humbert³

2011

Pesticides - Formulations, Effects, Fate

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Outdoor Experimental Ponds (Mesocosms) Designed for Long-Term Ecotoxicological Studies in Aquatic Environment

Cited by 38 publications

References 4 publications

Growth Control of Cyanobacteria by Three Submerged Macrophytes

Growth Control of Cyanobacteria by Three Submerged Macrophytes

Development of mosquitofish (Gambusia affinis holbrooki) populations in lentic mesocosms. Perspectives for ecotoxicological studies

Herbicide Contamination of Freshwater Ecosystems: Impact on Microbial Communities

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