Research in a variety of scientiffic disciplines suggests there are 85 to 90 per cent fewer fish and marine mammals in the oceans than there once were.

The number of species found on a standard longline in the 1960s...

Species density

...and in the 1990s.
Species density
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Alex E

Ecoclimax is defined by Odum (1969) as the culmination state after a succession in a stabilized ecosystem in which maximum biomass (or high information content) and symbiotic function among organisms is kept per unit of available energy flow.