{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Limburg KE"],"funding":["NIGMS NIH HHS"],"pagination":["E177-82"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC3107296"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["108(22)"],"pubmed_abstract":["Growing hypoxic and anoxic areas in coastal environments reduce fish habitat, but the interactions and impact on fish in these areas are poorly understood. Using \"natural tag\" properties of otoliths, we found significant correlations between the extent of Baltic Sea hypoxia and Mn/Ca ratios in regions of cod (Gadus morhua) otoliths corresponding to year 1 of life; this is associated with elevated bottom water dissolved manganese that increases with hypoxia. Elevated Mn/Ca ratios were also found in other years of life but with less frequency. We propose that cod exhibiting enhanced Mn/Ca ratios were exposed to dissolved manganese from hypoxia-induced redox dynamics in nursery areas. Neolithic (4500 B.P.) cod otoliths (n = 12) had low levels of Mn/Ca ratios, consistent with low hypoxia, but "],"journal":["Proceedings of the National Academy of Sciences of the United States of America"],"pubmed_title":["Tracking Baltic hypoxia and cod migration over millennia with natural tags."],"pmcid":["PMC3107296"],"funding_grant_id":["DMR0225180"],"pubmed_authors":["Hoie H","Olson C","Dale D","Slomp CP","Limburg KE","Walther Y"],"additional_accession":[]},"is_claimable":false,"name":"Tracking Baltic hypoxia and cod migration over millennia with natural tags.","description":"Growing hypoxic and anoxic areas in coastal environments reduce fish habitat, but the interactions and impact on fish in these areas are poorly understood. Using \"natural tag\" properties of otoliths, we found significant correlations between the extent of Baltic Sea hypoxia and Mn/Ca ratios in regions of cod (Gadus morhua) otoliths corresponding to year 1 of life; this is associated with elevated bottom water dissolved manganese that increases with hypoxia. Elevated Mn/Ca ratios were also found in other years of life but with less frequency. We propose that cod exhibiting enhanced Mn/Ca ratios were exposed to dissolved manganese from hypoxia-induced redox dynamics in nursery areas. Neolithic (4500 B.P.) cod otoliths (n = 12) had low levels of Mn/Ca ratios, consistent with low hypoxia, but ","dates":{"release":"2011-01-01T00:00:00Z","publication":"2011 May","modification":"2025-04-04T07:37:39.44Z","creation":"2019-03-27T00:42:14Z"},"accession":"S-EPMC3107296","cross_references":{"pubmed":["21518871"],"doi":["10.1073/pnas.1100684108"]}}