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Fishing down the food web is the process described by Prof Daniel Pauly whereby fisheries, "having depleted the large predatory fish on top of the food web, turn to increasingly smaller species, finally ending up with previously spurned small fish & invertebrates" Image
What does this look like in an Irish context? Here are the landings of finfish & crustaceans in the Irish Sea from 1970 to 2017. Overfishing has hollowed out the ecosystem decimating many fish populations, with unquantified implications for ecosystem functioning. Image
Here is another look at the collapse in Cod (-97%) and Whiting (-88%) in the Irish Sea over recent decades in terms of catches. Whiting is so overfished that @ICES_ASC have advised that zero fish be caught since 2001. Image
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