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Basin scale distributions of dissolved manganese, nickel, zinc and cadmium in the Mediterranean Sea

Journal Article · · Marine Chemistry
 [1];  [2];  [3];  [4];  [4];  [3]
  1. Royal Netherlands Inst. for Sea Research, Texel (Netherlands); Univ. of Otago, Dunedin (New Zealand). Centre for Trace Element Analysis
  2. Univ. of Otago, Dunedin (New Zealand). Centre for Trace Element Analysis; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of Otago, Dunedin (New Zealand). Centre for Trace Element Analysis
  4. Royal Netherlands Inst. for Sea Research, Texel (Netherlands)
Samples for dissolved trace metal concentrations were collected during GEOTRACES expedition GA04-N in summer/spring in the Mediterranean Sea, starting in the Atlantic Ocean and sampling both deep basins of the Mediterranean Sea. Outflow of Mediterranean Outflow Water leads to elevated concentrations of Mn, Ni and Zn in the Atlantic Ocean, but a concentration minimum in the Atlantic distribution of Cd. Nevertheless, when comparing the in- and outflow, the Mediterranean is a net source of Cd to the Atlantic Ocean. Surface concentrations of Mn, Ni, Zn and Cd are elevated in the Mediterranean relative to the Atlantic Ocean where Ni and Cd gradually increased along the eastward surface water flow path, Zn reached a homogenous concentration in the order of 1 to 1.5 nM, and Mn displayed a patchy surface distribution. The observed differences are attributable to the different dynamics of their biogeochemical cycling, notably the partitioning between the dissolved and particulate phases due to biological uptake, scavenging and possibly organic complexation. The elevated surface concentrations of Mn, Ni, Zn and Cd in the Mediterranean are derived from atmospheric deposition, where most likely Zn and Cd are mainly sourced from anthropogenic origin, Mn mostly from lithogenic origin and Ni from both anthropogenic and lithogenic origin. Dissolved Zn and Cd, as well as phosphate and nitrate, display striking inter-basin fractionations with elevated concentrations in the deep water of the western basin compared to the deep eastern basin, without a coinciding increase in the apparent oxygen utilization. Given that physical circulation or contribution from biogenic particulate metals cannot explain the elevated dissolved concentrations, an external non-biological source is required. This source is most likely a vertical flux of metal laden particles dissolving through the water column of the western Mediterranean where these particles, most likely from anthropogenic origin, are derived from either atmospheric deposition or particulate material deposited on the continental shelves that makes its way into the deep basin. Furthermore, to confirm or detect trends in dissolved metal concentrations in the deep basin, regular basin wide assessments of the trace metal distributions in the Mediterranean are needed. The distributions of Mn, Ni, Zn and Cd in the Sea of Marmara illustrate that all of these metals can be affected by anthropogenic surface sources and highlight the different susceptibilities of the dissolved metal distributions to supply from remineralization, and to removal through scavenging. This study provides a first baseline to assess future changes and underlines that the Mediterranean marine environment is susceptible to anthropogenic disturbances, with varying effects for different metals due to differing source strengths and biogeochemical cycles.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1834505
Report Number(s):
LLNL-JRNL--828095; 1043304
Journal Information:
Marine Chemistry, Journal Name: Marine Chemistry Vol. 238; ISSN 0304-4203
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (76)

The biogeochemical cycling of zinc and zinc isotopes in the North Atlantic Ocean: ZN AND ZN ISOTOPES IN THE NORTH ATLANTIC journal October 2014
Water mass mixing: The dominant control on the zinc distribution in the North Atlantic Ocean: ZINC IS CONTROLLED BY MIXING journal July 2015
Cadmium regeneration within the North Atlantic journal December 2015
The fertilizing role of African dust in the Amazon rainforest: A first multiyear assessment based on data from Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations: Dust Deposition in the Amazon Rainforest journal March 2015
Anthropogenic Signatures of Lead in the Northeast Atlantic journal March 2018
Heavy Metals Concentrations in Fish from Sicily (Mediterranean Sea) and Evaluation of Possible Health Risks to Consumers journal October 2011
Manganese in the North Pacific journal August 1980
Abundance of chemical elements in the continental crust: a new table journal August 1964
The contrasting biogeochemistry of iron and manganese in the Pacific Ocean journal January 1987
Trace metal enrichments in waters of the Gulf of Cadiz, Spain journal August 1991
The circulation and hydrography of the Marmara Sea journal January 1994
Effect of sunlight on redox cycles of manganese in the southwestern Sargasso Sea journal August 1988
Nutrient and organic carbon exchanges between the Black and Marmara Seas through the Bosphorus Strait journal August 1995
Cadmium, copper and lead in the western Mediterranean Sea journal December 1984
Distribution and transfer of trace elements in the Western Mediterranean journal March 1986
Zinc budget in the Mediterranean Sea: a hypothesis for non-steady-state behavior journal April 1991
Separation of anthropogenic and natural emissions of particulate heavy metals in the western Mediterranean atmosphere journal January 1990
Trace metal enrichments in the Mediterranean Sea journal August 1985
Levels of heavy metals (Fe, Cu, Ni, Cr, Pb, and Zn) in tissue of Mugil cephalus and Trachurus mediterraneus from Iskenderun Bay, Turkey journal July 2003
A Reassessment of Trace Metal Budgets in the Western Mediterranean Sea journal August 2001
Primary productivity in the oligotrophic Cretan Sea (NE Mediterranean): seasonal and interannual variability journal August 2000
The role of atmospheric deposition in the biogeochemistry of the Mediterranean Sea journal August 1999
Metal biogeochemistry in the Tinto–Odiel rivers (Southern Spain) and in the Gulf of Cadiz: a synthesis of the results of TOROS project journal December 2001
Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) journal March 2001
Seasonal variations of iron concentrations in the Ligurian Sea and iron budget in the Western Mediterranean Sea journal May 2001
Distribution and behaviour of some dissolved trace metals in the western Mediterranean Sea journal January 1997
Atmospheric input of dissolved and particulate metals to the northwestern Mediterranean journal January 1997
Riverine transfer of anthropogenic and natural trace metals to the Gulf of Lions (NW Mediterranean Sea) journal July 2015
Origin and accumulation of trace elements in sediments of the northwestern Mediterranean margin journal July 2014
The GEOTRACES Intermediate Data Product 2017 journal August 2018
Speciation of Fe in the Eastern North Atlantic Ocean journal November 2010
Dissolved manganese in the Atlantic sector of the Southern Ocean journal December 2011
The speciation of dissolved zinc in the Atlantic sector of the Southern Ocean journal December 2011
An overview of dissolved Fe and Mn distributions during the 2010–2011 U.S. GEOTRACES north Atlantic cruises: GEOTRACES GA03 journal June 2015
Dissolved Al in the zonal N Atlantic section of the US GEOTRACES 2010/2011 cruises and the importance of hydrothermal inputs journal June 2015
Atmospheric inputs of nutrients to the Mediterranean Sea journal January 2020
The first deep-sea mooring station in the eastern Levantine basin (DeepLev), outline and insights into regional sedimentological processes journal January 2020
Seasonal variations of biochemical and optical properties, physical dynamics and N stable isotopic composition in three northeastern Mediterranean basins (Aegean, Cretan and Ionian Seas) journal January 2020
Hydrography of the Eastern Mediterranean basin derived from argo floats profile data journal January 2020
Acid mine drainage pollution in the Tinto and Odiel rivers (Iberian Pyrite Belt, SW Spain) and bioavailability of the transported metals to the Huelva Estuary journal May 2007
The relationship between cadmium and phosphate in the Atlantic Ocean unravelled journal June 2018
Cadmium isotopic composition in the ocean journal October 2006
Biogeochemical cycling of cadmium isotopes along a high-resolution section through the North Atlantic Ocean journal January 2015
A biogeochemical model for phosphorus and nitrogen cycling in the Eastern Mediterranean Sea journal November 2014
Titan: A new facility for ultraclean sampling of trace elements and isotopes in the deep oceans in the international Geotraces program journal August 2008
Spatial variability of atmospheric fluxes of metals (Al, Fe, Cd, Zn and Pb) and phosphorus over the whole Mediterranean from a one-year monitoring experiment: Biogeochemical implications journal June 2010
Analysis of Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb in seawater using the Nobias-chelate PA1 resin and magnetic sector inductively coupled plasma mass spectrometry (ICP-MS) journal February 2012
Zonal distribution of dissolved aluminium in the Mediterranean Sea journal December 2015
Intercomparison of dissolved trace elements at the Bermuda Atlantic Time Series station journal December 2015
“PRISTINE”, a new high volume sampler for ultraclean sampling of trace metals and isotopes journal December 2015
Submarine groundwater discharge: A significant source of dissolved trace metals to the North Western Mediterranean Sea journal November 2016
Dissolved Fe and Fe-binding organic ligands in the Mediterranean Sea – GEOTRACES G04 journal August 2017
Recent accumulation of trace metals in sediments at the DYFAMED site (Northwestern Mediterranean Sea) journal January 2009
Dynamics and fates of trace metals chronically input in a Mediterranean coastal zone impacted by a large urban area journal April 2013
Bioavailability of heavy metals in water and sediments from a typical Mediterranean Bay (Málaga Bay, Region of Andalucía, Southern Spain) journal November 2013
Marine ecosystems’ responses to climatic and anthropogenic forcings in the Mediterranean journal October 2011
Metal contents of phytoplankton and labile particulate material in the North Atlantic Ocean journal September 2015
Trace metal concentrations in the North-western Mediterranean atmospheric aerosol between 1986 and 2008: Seasonal patterns and decadal trends journal June 2010
Base flow and stormwater net fluxes of carbon and trace metals to the Mediterranean sea by an urbanized small river journal December 2012
Phytoplankton pigment distribution in relation to upper thermocline circulation in the eastern Mediterranean Sea during winter journal September 2001
Estimation of the Atlantic inflow through the Strait of Gibraltar from climatological and in situ data
  • Soto‐Navarro, Javier; Criado‐Aldeanueva, Francisco; García‐Lafuente, Jesús
  • Journal of Geophysical Research: Oceans, Vol. 115, Issue C10 https://doi.org/10.1029/2010JC006302
journal October 2010
The Relationships Between Dissolved Zinc and Major Nutrients Phosphate and Silicate Along the GEOTRACES GA02 Transect in the West Atlantic Ocean journal January 2019
Cd and Mn in the Alboran Sea and adjacent North Atlantic: geochemical implications for the Mediterranean journal February 1985
Processes and patterns of oceanic nutrient limitation journal March 2013
A large scale survey of trace metal levels in coastal waters of the Western Mediterranean basin using caged mussels (Mytilus galloprovincialis) journal January 2011
Copper aerosols inhibit phytoplankton growth in the Mediterranean Sea journal December 2012
Submarine groundwater discharge as a major source of nutrients to the Mediterranean Sea journal March 2015
Diatom fluxes in the NW Mediterranean: evidence from a 12-year sediment trap record and surficial sediments journal June 2013
Biological uptake and reversible scavenging of zinc in the global ocean journal July 2018
GEOTRACES: Accelerating Research on the Marine Biogeochemical Cycles of Trace Elements and Their Isotopes journal January 2020
Dissolved cadmium in the Southern Ocean: Distribution, speciation, and relation to phosphate journal January 2014
Manganese in the west Atlantic Ocean in the context of the first global ocean circulation model of manganese journal January 2017
Regional trends in the fractional solubility of Fe and other metals from North Atlantic aerosols (GEOTRACES cruises GA01 and GA03) following a two-stage leach journal January 2018
Characterizing the surface microlayer in the Mediterranean Sea: trace metal concentrations and microbial plankton abundance journal January 2020
Effects of dust deposition on iron cycle in the surface Mediterranean Sea: results from a mesocosm seeding experiment journal January 2010
Integrated survey of elemental stoichiometry (C, N, P) from the western to eastern Mediterranean Sea journal January 2011

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