Discussion on:

The incredibly shrinking fish

The problem with this analysis is: 1) There's absolutely no evidence that sea creatures are shrinking in size, 2) The fish stocks which have commercial value appear to be decreasing in numbers and size primarily to overfishing. With the bizarre logic advanced by these "authors", people should be getting shorter too - which we're not.

No, no, heat expands things! For example, summer days are longer because of heat expansion.

Fish size is determined by a multitude of factors.

Water quality being #1 with food supply a close second. Population, or how much competition there is for the food supply is probably the next biggest factor. Predation, to include over fishing, is likely next on the list.

For example, the average size of many big game fish like marlin and tuna have shrink in recent decades because of over fishing. Their food supply has been reduced by overfishing and pollution and they are simply not living long enough to get large because they are overfished.

But if this study and its prediction is treated as valid, a global warming supporter could look at the raw data on game fish size and proclaim the size reduction is because of global warming over the same period of time. They would be, as this study is doing, ignoring other factors.

This is a very simplistic study of one tiny aspect of fish life. The entire purpose of this study is to make a dire prediction in an attempt to reinforce the crumbling case for manmade global warming.

This is not a study, not really. A study would include real life observations or real data. This is a guess based on an impossible (per IPCC) model. First of all, the IPCC says that you cannot predict climate in the future (longer term) because of the nature of the climate system - a chaotic, non-linear coupled system. Secondly, the models contain assumptions regarding feedback loops that have been proven wrong so even short term predictions are not reliable.
As has been pointed out, the casual analysis appears to be deficient.
The only type of study that this can be called is a poor one.
I do marvel at the fact that supposedly smart inteligent people continue to publish things like this.

Study was their word.

Poorly researched essay might be better.

" ... as this study is doing, ignoring other factors."

You didn't even bother skimming the study did you? They did not ignore other factors, just concentrated on expected changes from global warming.

" ...the crumbling case for manmade global warming. "

Thanks for the belly laugh

The core of the story is this.

"The study modeled climate change between 2000 and 2050 using data from the Intergovernmental Panel on Climate Change, a joint effort by the United Nations Environment Program and the World Meteorological Association. It forecasts fish will shrink between 14 percent and 24 percent in that time frame."

What other factors did it discuss?

The only other point mentioned is a brief and vague "Smaller fish are less likely to reproduce, for instance." No mention of what they mean by that. No discussion on how small size limits, supporting overfishing, allow fish to be caught before they are old enough to breed, but I'll give you that one as being implied.

What else is there?

Interesting research and predictions. My research (and that of Seinfeld's
George) suggests that it's 'cold' water that causes personal shrinkage

Thank you Terry. George was a wise one. We should quote him here more often...

Don't forget, we're also eating more of the little fish that the big fish eat - we're putting our premium fish on a diet!

the earth loses its oxygen in growth factor Why? Because the earth always did! The gigantism of prehistoric insects proves us in reverse too! So if oxygen is lost by metabolism by galactic seasons, the CO2 levels rise thus always automatically. When Co2 is rising all the creatures in evolution get smaller, because the sea is becoming more acidic. Please research and google for the "galactic summer" and find the context for yourself.