The Big Fish are Gone21ax0w3am0j23cz0qd1q1n3u- The Big Fish are Gone Fisheries made early and...

The Big Fish are Gone21ax0w3am0j23cz0qd1q1n3u- The Big Fish are Gone Fisheries made early and dramatic
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Transcript of The Big Fish are Gone21ax0w3am0j23cz0qd1q1n3u- The Big Fish are Gone Fisheries made early and...

  • History of Marine Animal Populations

    www.hmapcoml.org Ling length compositions sources: 1800s: R.T. Poulsen 2007; modern data: courtesy O. A. Bergstad 2007. Past and Present source: B. Poulsen 2008

    Past and Present

    Danish pelagic trawler 2010: HG 333 Isafold, Hirtshals Crew: 10-11 men Annual catch potential: >50,000 tonnes

    Size of Dutch herring fleet in 1640: 700-800 herring busses Crew: 11,000-12,000 men Total annual catch: 50,000 tonnes

    Credit: Reinier Nooms, alias ‘De Zeeman’ (ca 1623-1664), Etch, Harinck-Buisen, ca 1640-1664, Collection Visserijmuseum/Vlaardings Museum, Vlaardingen).

    Photo: Bo Poulsen

    The Big Fish are Gone Fisheries made early and dramatic changes to ecosystems worldwide.

    Example: North Sea Ling are smaller because of fishing.

    Average size caught: 60 - 90 cm.

    Average size caught: 89 - 126 cm.

    Average size caught: 77 - 103 cm.

    Year 1890

    Year 1915

    Year 1990

    126 cm.

    103 cm.

    90 cm.

    Author: K.P.Pravato, P. Holm, R. T. Poulsen and B. Poulsen