Influence of the Gironde estuary outputs on cadmium concentrations in the waters: consequences on the Marennes-Oléron bay (France)

Boutier, Bernard; Chiffoleau, Jean-François; Gonzalez, Jean-Louis; Lazure, Pascal; Auger, Dominique; Truquet, Isabelle

doi:10.1016/s0399-1784(00)01119-1

Cited by 60 publications

(64 citation statements)

References 20 publications

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“…To provide additional information on whether decreasing pH (7.60 and 7.85 from a baseline of 8.10) influenced metal(loid) bioavailability in the tested waters, the speciation of Ag, Cd and Zn was calculated using the HARPHRQ geochemical speciation code (Brown et al, 1991). The input parameters were based on measured physicochemical data (salinity, 38, temperature, 16 or 19 • C, dissolved organic carbon <1 mg l −1 ; see Jeffree et al, 2006 for more details).…”

Section: Chemical Speciation Modellingmentioning

confidence: 99%

“…Recent studies have focused on the responses of these organisms to increasing temperature and pCO 2 (Melzner et al, 2007;Rosa and Seibel, 2009) and reported that their low oxygen-carrying blood protein was a target of their expected vulnerability to global warming and ocean acidification. Indeed, oxygen affinity of their haemocyanins decreased with decreasing pH (Bridges, 1994) and increasing temperature (Zielinski et al, 2001), subsequently reducing their metabolic scope. Nonetheless, data on the potential impact of both these variables on the cephalopod early life stages are relatively scarce.…”

Section: Introductionmentioning

confidence: 99%

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Effects of increased pCO2 and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, Sepia officinalis

et al. 2009

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Abstract. Cephalopods play a key role in many marine trophic networks and constitute alternative fisheries resources, especially given the ongoing decline in finfish stocks. Along the European coast, the eggs of the cuttlefish Sepia officinalis are characterized by an increasing permeability of the eggshell during development, which leads to selective accumulation of essential and non-essential elements in the embryo. Temperature and pH are two critical factors that affect the metabolism of marine organisms in the coastal shallow waters. In this study, we investigated the effects of pH and temperature through a crossed (3 × 2; pH 8.1 (pCO 2 , 400 ppm), 7.85 (900 ppm) and 7.6 (1400 ppm) at 16 and 19 • C, respectively) laboratory experiment. Seawater pH showed a strong effect on the egg weight and non-significant impact on the weight of hatchlings at the end of development implying an egg swelling process and embryo growth disturbances. The lower the seawater pH, the more 110m Ag was accumulated in the tissues of hatchlings. The 109 Cd concentration factor (CF) decreased with decreasing pH and 65 Zn CF reached maximal values pH 7.85, independently of temperature. Our results suggest that pH and temperature affected both the permeability properties of the eggshell and embryonic metabolism. To the best of our knowledge, this is one of the first studies on the consequences of ocean acidification and ocean warming on metal uptake in marine organisms, Correspondence to: T. Lacoue-Labarthe (tlacouel@gmail.com) and our results indicate the need to further evaluate the likely ecotoxicological impact of the global change on the earlylife stages of the cuttlefish.

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Section: Chemical Speciation Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of increased pCO2 and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, Sepia officinalis

et al. 2009

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“…This basin is indeed subject to a residual tidal current flowing from north to south (Heral and al, 1982;Boutier and al 2000). Therefore, the water entering here contained a large proportion of Gironde river water ranging from 3% (34.5) to 20% (28 ).…”

Section: Variability On a Monthly Scalementioning

confidence: 93%

Analysis of salinity measurements near islands on the French continental shelf of the Bay of Biscay

Lazure¹,

Jégou²,

Kerdreux³

2006

Sci. Mar.

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“…en 2000-2002 : 1-5 mg.kg −1 et 20-30 ng.L −1 dans le Lot amont de la confluence avec le Riou Mort, dans la Garonne amont de la confluence avec le Lot et dans la Dordogne), nous estimons que 70 à 80 % (≈7 à 8 t an −1 ) du Cd transportés par la Garonne à la Réole résultent d'apports anthropogéniques et que la majorité de ces apports (≈5 à 6 t an −1 ) dérivent du Bassin de Decazeville via le Riou-Mort (Fig. 1) Gironde in 1990Gironde in , 1994Gironde in , 1997Gironde in , 1998, data from Kraepiel et al, 1997;Boutier et al, 2000and Michel et al, 2000. et al, 1991, 1993, 1994, 1996, Schäfer et al, 2000.…”

Section: Flux Annuels Bruts Et Nets De CDunclassified

“…À partir de concentrations en Cd dissous mesurées ponctuellement dans les eaux estuariennes (Kraepiel et al, 1997 ;Boutier et al, 2000 ;Michel et al, 2000), des flux nets de Cd dissous ont été estimés . La comparaison 34,3 (22,9-50,4) 20,2 (11,3-30,7) 14,1 (11,6-19,7) 59/41 (10 9 m 3 .…”

Section: Flux Annuels Bruts Et Nets De CDunclassified

Le cadmium dans le Lot et la Garonne : sources et transport

et al. 2006

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Résumé -La détermination précise des flux de Cd dissous et particulaire du Lot et de la Garonne impose la mise en place d'une stratégie d'échantillonnage spécifique. La fiabilité des méthodologies que nous employons a été vérifiée. Nous avons notamment montré que l'échantillonnage des MES par centrifugation de grands volumes d'eau (1000 L) est la méthode la plus adaptée pour calculer des flux, mais aussi pour accéder à la spéciation à l'état solide. Des mesures journalières de débits et de concentrations en MES combinées à des analyses de Cd dissous et particulaire permettent de proposer un bilan de masse de Cd pour le système fluviatile du Lot et de la Garonne. Ce bilan montre que 70-80 % du Cd transporté en aval par la Garonne (La Réole) provient du Lot dont la majorité (∼75 %) provient du bassin de Decazeville via la rivière Riou-Mort. Ce bilan montre également que les sédiments pollués en Cd et accumulés derrière les barrages hydroélectriques constituent une source secondaire en Cd dont la mobilisation dépend des variations hydrologiques, mais aussi des aménagements anthropiques. En considérant l'ensemble des apports fluviaux en Cd, nous estimons que 60-75 % du Cd apporté à l'estuaire de la Gironde est d'origine anthropique. Sur la base des données existantes, validées entre 1994 et 2000, les flux journaliers de Cd dissous ont été recalculés pour le Lot, et des relations caracté-ristiques entre flux de matières et débits ont été établies. Ainsi nous proposons un modèle prédictif empirique permettant une bonne estimation des flux de Cd dissous et particulaire à partir des seules données de débit. La comparaison de nos données de flux bruts avec les quelques données disponibles de flux nets (e.g. apports à l'océan) de Cd dissous suggère que plus de 50 % du Cd particulaire passent sous forme dissoute pendant les années humides (94 et 96) et que les flux de Cd dissous nets sont supérieurs aux flux totaux bruts pendant les années sèches (91 et 97). Ceci suggère que la réactivité estuarienne girondine libère progressivement sous forme dissoute, la quasi totalité du Cd apporté majoritairement sous forme particulaire par le fleuve. and analytical methods. This study proves that pumping/centrifugation is the most appropiate sampling/separation technique (recovery, representativity, contamination) for the determination of the metallic fluxes. Daily data of water discharge and total suspended sediment content (TSS) were combined together with high frequency analyses of heavy metal contents. That allows us to propose a Cd budget for the fluvial system of the Lot and Garonne Rivers. This budget shows that 70-80% of the Cd transported by the dowstream Garonne (La Réole) is supplied by the Lot River that derive the major part of Cd (75%) from the Decazeville basin via the Riou-Mort River. This budget also shows that the dam lake sediments represent a secondary source for Cd. The mobilisation of this sediment enriched in Cd is relative to the hydrologic changes and also river bed dredging. With regard to the whole fluvial C...

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Influence of the Gironde estuary outputs on cadmium concentrations in the waters: consequences on the Marennes-Oléron bay (France)

Cited by 60 publications

References 20 publications

Effects of increased <i>p</i>CO<sub>2</sub> and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, <i>Sepia officinalis</i>

Effects of increased <i>p</i>CO<sub>2</sub> and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, <i>Sepia officinalis</i>

Analysis of salinity measurements near islands on the French continental shelf of the Bay of Biscay

Le cadmium dans le Lot et la Garonne : sources et transport

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Influence of the Gironde estuary outputs on cadmium concentrations in the waters: consequences on the Marennes-Oléron bay (France)

Cited by 60 publications

References 20 publications

Effects of increased &lt;i&gt;p&lt;/i&gt;CO&lt;sub&gt;2&lt;/sub&gt; and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, &lt;i&gt;Sepia officinalis&lt;/i&gt;

Effects of increased &lt;i&gt;p&lt;/i&gt;CO&lt;sub&gt;2&lt;/sub&gt; and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, &lt;i&gt;Sepia officinalis&lt;/i&gt;

Analysis of salinity measurements near islands on the French continental shelf of the Bay of Biscay

Le cadmium dans le Lot et la Garonne : sources et transport

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Effects of increased <i>p</i>CO<sub>2</sub> and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, <i>Sepia officinalis</i>

Effects of increased <i>p</i>CO<sub>2</sub> and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, <i>Sepia officinalis</i>