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Preview Manual for seabird and marine mammal survey on seismic vessels ... pdf file

Scientific Report from DCE – Danish Centre for Environment and Energy. No. 152 .... This is the fourth revised edition of the seabird and marine mammal survey .... so-called observation periods (e.g. 2, 5 or 10 minute intervals) and the sight- ..... as missing some of the birds in the distance bands far away from the ship is.



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