Tilapia production in ponds is higher in the north of Thailand, and
the national harvest for 2010 is 158,293 t y−1
. The environmental
externalities simulated for tilapia and shrimp pond monoculture
were scaled up to all of Thailand (Tables 5 and 6): based on the
pond-scale simulations, this corresponds to an aggregate emission of
6947 t N y−1
, or 2,105,118 PEQ, about a third of the population of
Bangkok.