Mercury and methylmercury concentrations in high altitude lakes and fish (Arctic charr) from the French Alps related to watershed characteristics
Nicolas Marusczak
(1, 2)
,
Catherine Larose
(1, 3)
,
Aurélien Dommergue
(1)
,
Serge Paquet
(4)
,
Jean-Sébastien Beaulne
(4)
,
Régine Maury-Brachet
(5)
,
Marc Lucotte
(4)
,
Rachid Nedjaï
(2)
,
Christophe P. Ferrari
(1)
1
LGGE -
Laboratoire de glaciologie et géophysique de l'environnement
2 PACTE - Pacte, Laboratoire de sciences sociales
3 LAPM - Laboratoire Adaptation et pathogénie des micro-organismes [Grenoble]
4 GEOTOP - Centre de recherche sur la dynamique du système Terre
5 EPOC - Environnements et Paléoenvironnements OCéaniques
2 PACTE - Pacte, Laboratoire de sciences sociales
3 LAPM - Laboratoire Adaptation et pathogénie des micro-organismes [Grenoble]
4 GEOTOP - Centre de recherche sur la dynamique du système Terre
5 EPOC - Environnements et Paléoenvironnements OCéaniques
Catherine Larose
- Fonction : Auteur
- PersonId : 171259
- IdHAL : catherine-larose
- ORCID : 0000-0001-5641-0701
- IdRef : 185261167
Aurélien Dommergue
- Fonction : Auteur
- PersonId : 992013
- IdHAL : aurelien-dommergue
Résumé
Total mercury (THg) andmethylmercury (MeHg) concentrations were measured in the muscle of Arctic charr (Salvelinus alpinus) and in the water column of 4 lakes that are located in the French Alps. Watershed characteristics were determined (6 coverage classes) for each lake in order to evaluate the influence of watershed composition on mercury and methylmercury concentrations in fish muscle and in the water column. THg and MeHg concentrations in surface water were relatively low and similar among lakes and watershed characteristics play a major role in determining water column Hg and MeHg levels. THg muscle concentrations for fish with either a standardized length of 220 mm, a standardized age of 5 years or for individualuals did not exceed the 0.5 mg kg−1 fish consumption advisory limit established for Hg by the World Health Organization (WHO, 1990). These relatively low THg concentrations can be explained by watershed characteristics, which lead to short Hg residence time in the water column, and also by the short trophic chain that is characteristic of mountain lakes. Growth rate did not seem to influence THg concentrations in fish muscles of these lakes and we observed no relationship between fish Hg concentrations and altitude. This study shows that in the French Alps, high altitude lakes have relatively low THg and MeHg concentrations in both the water column and in Arctic charr populations. Therefore, Hg does not appear to present a danger for local populations and the fishermen of these lakes.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Mercury and methylmercury concentrations in high altitude lakes and fish (Arctic charr) from the French Alps related to watershed characteristics
|
Résumé |
en
Total mercury (THg) andmethylmercury (MeHg) concentrations were measured in the muscle of Arctic charr (Salvelinus alpinus) and in the water column of 4 lakes that are located in the French Alps. Watershed characteristics were determined (6 coverage classes) for each lake in order to evaluate the influence of watershed composition on mercury and methylmercury concentrations in fish muscle and in the water column. THg and MeHg concentrations in surface water were relatively low and similar among lakes and watershed characteristics play a major role in determining water column Hg and MeHg levels. THg muscle concentrations for fish with either a standardized length of 220 mm, a standardized age of 5 years or for individualuals did not exceed the 0.5 mg kg−1 fish consumption advisory limit established for Hg by the World Health Organization (WHO, 1990). These relatively low THg concentrations can be explained by watershed characteristics, which lead to short Hg residence time in the water column, and also by the short trophic chain that is characteristic of mountain lakes. Growth rate did not seem to influence THg concentrations in fish muscles of these lakes and we observed no relationship between fish Hg concentrations and altitude. This study shows that in the French Alps, high altitude lakes have relatively low THg and MeHg concentrations in both the water column and in Arctic charr populations. Therefore, Hg does not appear to present a danger for local populations and the fishermen of these lakes.
|
Auteur(s) |
Nicolas Marusczak
1, 2
, Catherine Larose
1, 3
, Aurélien Dommergue
1
, Serge Paquet
4
, Jean-Sébastien Beaulne
4
, Régine Maury-Brachet
5
, Marc Lucotte
4
, Rachid Nedjaï
2
, Christophe P. Ferrari
1
1
LGGE -
Laboratoire de glaciologie et géophysique de l'environnement
( 664 )
- Domaine Universitaire 54 Rue Molière - BP 96 38402 ST MARTIN D HERES CEDEX
- France
2
PACTE -
Pacte, Laboratoire de sciences sociales
( 675 )
- Siège : IEP - BP 48 38040 Grenoble cedex 9
- France
3
LAPM -
Laboratoire Adaptation et pathogénie des micro-organismes [Grenoble]
( 644 )
- Institut Jean Roget, Faculté de Médecine, BP 170, 38042 Grenoble cedex 09
- France
4
GEOTOP -
Centre de recherche sur la dynamique du système Terre
( 320713 )
- Université du Québec à Montréal 201, Président-Kennedy Ave. 7th floor, room PK-7150 Montréal QC H2X 3Y7 Canada
- Canada
5
EPOC -
Environnements et Paléoenvironnements OCéaniques
( 778 )
- Avenue des Facultés - 33405 TALENCE CEDEX
- France
|
Comité de lecture |
Oui
|
Vulgarisation |
Non
|
Langue du document |
Anglais
|
Nom de la revue |
|
Date de production/écriture |
2010-10-05
|
Audience |
Internationale
|
Date de publication |
2011-02-11
|
Numéro |
409
|
Page/Identifiant |
1909-1915
|
Domaine(s) |
|
Financement |
|
Mots-clés |
en
Total mercury Methylmercury Lakes Arctic charr French Alps
|
Origine :
Fichiers produits par l'(les) auteur(s)
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