Data from North Sea - International Bottom Trawl Survey (IBTS)

IBTS surveys (International Bottom Trawl Survey) are carried out within an international framework. Main countries bordering the North Sea participate to it according to the...IBTS调查（International Bottom Trawl Survey，国际底拖网调查）是依托国际框架开展的调查项目。北海沿岸主要国家依据……参与此项调查。