Trace metal (Cd, Cu, Ni and Pb) cycling in the upper water column near the shelf edge of the European continental margin (Celtic Sea)

Cotté-Krief, Marie-Hélène; Thomas, Alain; Martin, Jean‐Marie

doi:10.1016/s0304-4203(02)00013-0

Cited by 37 publications

(10 citation statements)

References 48 publications

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“…Our surface water DPb concentration of 40.2 ± 7.5 pmol kg −1 ( n = 109) along the shelf break in 2014–2015 showed at least a fourfold decrease compared to previous reports for the region (Figure e and Table S2) (Brügmann et al, ; Cotté‐Krief et al, ; Helmers & Van der Loeff, ; Lambert et al, ; Muller et al, ) and were generally lower in comparison to other European shelf waters over the last 4 decades (Kremling & Streu, ; Laumond et al, ; Monteiro et al, ; Pohl et al, ; Prego et al, ; Waeles et al, ). The diminishing DPb concentrations over the last two decades form a success of the phaseout process of leaded gasoline.…”

Section: Resultscontrasting

confidence: 56%

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Anthropogenic Signatures of Lead in the Northeast Atlantic

Rusiecka

Gledhill

Milne

et al. 2018

Geophysical Research Letters

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Anthropogenic activities have resulted in enhanced lead (Pb) emissions to the environment over the past century, mainly through the combustion of leaded gasoline. Here we present the first combined dissolved (DPb), labile (LpPb), and particulate (PPb) Pb data set from the Northeast Atlantic (Celtic Sea) since the phasing out of leaded gasoline in Europe. Concentrations of DPb in surface waters have decreased by fourfold over the last four decades. We demonstrate that anthropogenic Pb is transported from the Mediterranean Sea over long distances (>2,500 km). Benthic DPb fluxes exceeded the atmospheric Pb flux in the region, indicating the importance of sediments as a contemporary Pb source. A strong positive correlation between DPb, PPb, and LpPb indicates a dynamic equilibrium between the phases and the potential for particles to “buffer” the DPb pool. This study provides insights into Pb biogeochemical cycling and demonstrates the potential of Pb in constraining ocean circulation patterns.

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Section: Resultscontrasting

confidence: 56%

“…(e) Reduction of DPb concentrations in the Celtic Sea slope region over the last 30 years. Data are from Brügmann et al (, green circles), Lambert et al (, blue triangles), and Cotté‐Krief et al (, yellow squares), and this study is represented by the S08 station in April (DY029) by red diamonds.…”

Section: Resultsmentioning

confidence: 99%

Anthropogenic Signatures of Lead in the Northeast Atlantic

Rusiecka

Gledhill

Milne

et al. 2018

Geophysical Research Letters

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“…The lowest concentrations have been mentioned by [ Martin et al , 1993] (0.07–0.19 nM) at 47°N, 20°W, whereas [ de Jong et al , 2000] and [ Boye et al , 2003] reported much higher concentrations (0.80–1.50 nM) at 40°N, 23°W, and (0.71 ± 0.11 nM) at 45°N, 20°W, respectively. At the seasonal scale, biological activity greatly impacts the concentrations of nutrients and trace metals (e.g., Cd) in the euphotic layer of the studied region [ Cotté‐Krief et al , 2002]. The relatively high nitrate concentrations measured during our cruise are typical of pre‐bloom conditions in this area [ Tréguer et al , 1979].…”

Section: Discussionmentioning

confidence: 99%

Deep dissolved iron profiles in the eastern North Atlantic in relation to water masses

Laës-Huon

Blain

Laan

et al. 2003

Geophysical Research Letters

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Concentrations of dissolved iron (DFe, 0.2μm) were determined at two stations in the Biscay Abyssal Plain (North East Atlantic) in March 2002. DFe concentrations in the surface layer (0.23–0.34 nM) were typical of winter conditions in this area. At 1000 m, DFe concentrations increased to 0.62–0.86 nM. This feature is consistent with the production of DFe by remineralization of the biogenic material. However, at this depth, Mediterranean Outflow Water (MOW) could be an additional source of DFe. Below 2500 m, DFe concentrations were constant (0.75 ± 0.04 nM). An interesting feature of the profiles was the intermediate maximum of DFe (1.19–1.12 nM) around 2000 m, associated with the Labrador Sea Water (LSW). We suggest that the iron enrichment of LSW occurred when this water mass reached the continental margin, likely in the vicinity of the Goban plateau. Vertical distributions were highly dependent on water masses encountered.

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“…Considering all data from the two sampling times, dissolved trace metal concentrations in near-shore coastal waters were comparable with other regions of the world (Table 1), for example, coastal areas near the Celtic Sea (Cotté-Krief et al 2002), Pearl River Estuary (Wang et al 2012), eastern Gotland (Pohl et al 2006), Gulf of Farallones (Hurst and Bruland 2008), Baja California (Sañudo-Wilhelmy and Flegal 1996), Hawaii (Bienfang et al 2009), and the Gulf of Thailand (Censi et al 2006), as well as continental shelves (the Gulf of Mexico and East China Sea) receiving large terrestrial inputs (the Mississippi and Changjiang Rivers, respectively) Wen et al 2011). Concentration ranges observed were 27 -289 pM for Cd, 1.32 -66.26 nM for Cu, 2.39 -86.87 nM for Ni, 0.08 -0.44 nM for Pb, and 0.65 -66.79 nM for Zn.…”

Section: Dissolved Metal Concentrationsmentioning

confidence: 68%

Spatial and Temporal Distribution of Trace Metals (Cd, Cu, Ni, Pb, and Zn) in Coastal Waters off the West Coast of Taiwan

Jiann¹,

Wen²,

Wei³

2014

Terr. Atmos. Ocean. Sci.

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Surface water samples were collected along the west coast of Taiwan during two expedition cruises which represent periods of different regional climatic patterns. Information on hydrochemical parameters such as salinity, nutrients, suspended particulate matter (SPM), and Chlorophyll a concentrations were obtained, and dissolved and particulate trace metal (Cd, Cu, Ni, Pb, and Zn) concentrations were determined. Spatial variations were observed and the differences were attributed to (1) influence of varying extents of terrestrial inputs from the mountainous rivers of Taiwan to the coast, and (2) urbanization and industrialization in different parts of the island. Geochemical processes such as desorption (Cd) and adsorption to sinking particles (Pb) also contributed to the variability of trace metal distributions in coastal waters. Results showed temporal variations in chemical characteristics in coastal waters as a consequence of prevailing monsoons. During the wet season when river discharges were higher, the transport of particulate metals was elevated due to increased sediment loads. During the dry season, lower river discharges resulted in a lesser extent of estuarine dilution effect for chemicals of anthropogenic sources, indicated by higher dissolved concentrations present in coastal waters associated with slightly higher salinity.

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Trace metal (Cd, Cu, Ni and Pb) cycling in the upper water column near the shelf edge of the European continental margin (Celtic Sea)

Cited by 37 publications

References 48 publications

Anthropogenic Signatures of Lead in the Northeast Atlantic

Anthropogenic Signatures of Lead in the Northeast Atlantic

Deep dissolved iron profiles in the eastern North Atlantic in relation to water masses

Spatial and Temporal Distribution of Trace Metals (Cd, Cu, Ni, Pb, and Zn) in Coastal Waters off the West Coast of Taiwan

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