Ancient fish bones reveal impacts of global warming beneath the sea

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Part of the fishbones from 1m2 of the Maglemosegaard excavation. 48 percent of the 12784 identified fish bones were from gadids mainly cod. Each red bar segment on the scale is 1 cm. Credit: G. Brovad
Part of the fishbones from 1m2 of the Maglemosegaard excavation. 48 percent of the 12,784 identified fish bones were from gadids, mainly cod. Each red bar segment on the scale is 1 cm. Credit: G. Brovad

Scientists studying ancient fish bones in Scandinavia have discovered that warm-water species like anchovies and black sea bream that once thrived in Danish waters during a prehistoric warm period are now returning. Some cold-water species, such as cod, were also abundant during this period, having benefited from a lower fishing effort.


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