The ApocaDocs Logo: the Deaths-head Jester

About:
[The Project]
[The ApocaDocs]
[Equal Share]
The Six Scenarios:
[Species Collapse]
[Infectious Disease]
[Climate Chaos]
[Resource Depletion]
[Biology Breach]
[Recovery]
Explore:

Play:

It's weekly, funny, and free!

SEARCH

More than 6,000 stories!

A great gift
for crisis deniers!


The ApocaDocs have a Book!
Humoring the Horror of the
Converging Emergencies
94 color pages
$24.99 now $15!
Or read FREE online!




Twitter




Ping this story
in social media:
del.icio.us
Digg
Newsvine
NowPublic
Reddit
Facebook
StumbleUpon

Posted Fri Jan 6 2012: from Inter-Research:
Modelling the effects of fishing on the biomass of the world's oceans from 1950 to 2006 http://apocadocs.com/s.pl?1325810348
Using primary production, sea surface temperature, transfer efficiency, fisheries catch and TL of species, the model was applied on a half-degree spatial grid covering all oceans. Estimates of biomass by TLs were derived for marine ecosystems in an unexploited state, as well as for all decades since the 1950s. Trends in the decline of marine biomass from the unexploited state were analyzed with a special emphasis on predator species as they are highly vulnerable to overexploitation. This study highlights 3 main trends in the global effects of fishing: (1) predators are more affected than organisms at lower TLs; (2) declines in ecosystem biomass are stronger along coastlines than in the High Seas; and (3) the extent of fishing and its impacts have expanded from north temperate to equatorial and southern waters in the last 50 yr. More specifically, this modelling work shows that many oceans historically exploited by humans have seen a drastic decline in their predator biomass, with approximately half of the coastal areas of the North Atlantic and North Pacific showing a decline in predator biomass of more than 90 percent.
[Read more stories about: overfishing, predator depletion, koyaanisqatsi, ecosystem interrelationships]

New!:
No reader quips yet -- be the first!

Got a PaniQuip?

Your Quip (limit 140 characters, no links, just wit):

First name:

The text shown in the Web image to the right:


We reserve the right to reuse, remove, or refuse any entry.

'Doc Jim says:
Without predator species, there's no need for fear!

NEXT>
More stories:
  • Monkey Embryo Mashup Results In First Primate Chimeras
  • Climate change models flawed, extinction rate likely higher than predicted
  • (Modelling the effects of fishing on the biomass of the world's oceans from 1950 to 2006)
  • Jeremy Jackson talks about How We Wrecked the Ocean
  • China cuts 2012 rare earths export quota

  • Want to explore more?
    Try the PaniCloud!
    Copyright 2010 The Apocadocs.com