AARHUS UNIVERSITY http://arctic.au.dk Jens Søndergaard (PI) – AU, Roskilde Lis Bach – AU, Roskilde Anders Mosbech – AU, Roskilde Norman Halden – Univ. of Manitoba MARINE WP 10: OTOLITHS AND MUSSEL SHELLS AS RECORDERS OF POTENTIAL FUTURE POLLUTION ON A TRANSECT FROM NUUK TO THE PROPOSED ISUA IRON-MINE 18. DECEMBER 2013
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AARHUS
UNIVERSITY
http://arctic.au.dk
Jens Søndergaard (PI) – AU, Roskilde Lis Bach – AU, Roskilde Anders Mosbech – AU, Roskilde Norman Halden – Univ. of Manitoba
MARINE WP 10: OTOLITHS AND MUSSEL SHELLS AS RECORDERS OF POTENTIAL FUTURE POLLUTION ON A TRANSECT FROM NUUK TO THE PROPOSED ISUA IRON-MINE
18. DECEMBER 2013
AARHUS
UNIVERSITY
http://arctic.au.dk
PROJECT IDEA
›Otoliths and mussel shells as new tools to assess mining pollution in Greenland?
Laser Ablation Inductively Coupled
Plasma Mass Spectrometry (LA-ICP-
MS)
AARHUS
UNIVERSITY
http://arctic.au.dk
PROJECT IDEA
›Otoliths and mussel shells as new tools to assess mining pollution in Greenland?
›Main focus on otoliths from shorthorn sculpins
› Establish baseline knowledge prior to the
proposed Isua mine
› Evaluate the technique based on sampling from
a range of other locations in Greenland incl.
previously mining impacted areas and Nuuk
Harbour
AARHUS
UNIVERSITY
http://arctic.au.dk
FIELD WORK
›Nuuk, 6-16 September 2013
AARHUS
UNIVERSITY
http://arctic.au.dk
FIELD WORK
AARHUS
UNIVERSITY
http://arctic.au.dk
SAMPLING
› Isua mine port/outlet point • Shorthorn sculpins (12) • Blue mussels (5) • Atlantic cod (7)
› Reference site 1 (Parallel Is.) • Shorthorn sculpins (20)
› Reference site 2 (Kangeq) • Shorthorn sculpins (20)
› Previously collected shorthorn sculpin otoliths from other locations in Greenland (Ivittut, Maarmorilik, Thule, Disko, Nalunaq, Scoresbysund) (3 from each location)
AARHUS
UNIVERSITY
http://arctic.au.dk
LAB WORK
AARHUS
UNIVERSITY
http://arctic.au.dk
FURTHER WORK
›Sample preparation for LA-ICP-MS analyses (University of Manitoba, on-going)
› LA-ICP-MS analyses (University of Manitoba, February 2014)
1. Otoliths and mussel shells as recorders of past, present and future anthropogenic impact in the Nuuk Fiord, Greenland.
2. Trace element distributions in sculpin otoliths from a range of locations in Greenland: Time-resolved recorders of natural and human-induced variations in water chemistry and food-supply.
AARHUS
UNIVERSITY
http://arctic.au.dk
THANKS:
›ARC for funding ›Special thanks to: › Søren Rysgaard