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And then there is climate change and ocean acidification which threaten to flood nesting sites and disrupt food sources.
The decline since 1996 has largely been in fish caught by industrial fleets and to a lesser extent a cut in the number of unwanted fish discarded at sea.
"The fact that we catch far more than we thought is, if you like, a more positive thing," he said.
A more exhaustive study, taking over a decade shows that the annual catches between 19 were much bigger than thought, but that the decline after the peak year of 1996 was much faster than official figures.
The new research estimates the peak catch was 130 million tons, but declined at 1.2 million tons per year afterwards.
Seafood is the critical source of protein for more than 2.5 billion people, but over-exploitation is cutting the catch by more than 1 million tons a year.
Official catch data from FAO rarely includes small-scale, sport or illegal fishing and does not count fish discarded at sea.
Paleczny and Hammil's research found that the tern family has fallen by 85%, frigatebirds by 81%, petrels and shearwaters by 79%, and albatrosses by 69%.
Lascelles said: "Increased efforts should be made to rid seabird colonies of invasive species, reduce bycatch in fisheries or the ensnaring of birds in fish nets, and setting up conservation areas." Paleczny also called for the creation of international marine protected areas to cover the wide ranges of seabirds.
In the end, large-scale actions to help seabirds could also go a long way in cleaning-up our increasingly trashed marine ecosystems.Tags: Adult Dating, affair dating, sex dating