Fact 4!

Fact 4:

Global warming has caused some species of fish to almost go extinct.



Source 1:

http://www.nrdc.org/globalWarming/ntrout.asp



1. The source is the NRDC (National Resources Defense Council)

2. Credentials: It is a -.org website

3. This source is very credible.

4. The source says that fish such as salmon and trout live in cold streams and rivers. With global warming increasing the temperature, the climate is not right for the spawning of these fish. Therefore the population of these fish has slowly been decreasing and on its way to extinction.

5&6. I believe this source because it is very credible and the information seems very logical.


Source 2:
http://news.mongabay.com/2008/0115-hance_bering.html0

1. The sources are Dave Hutchins and Clinton Hare.

2. Credentials: Dave Hutchins (former student and the University of Delaware)

3. This source is fairly credible.

4. The source says, "A recent study, published in Marine Ecology Progress Series, showed that global warming will greatly affect the Bering Sea's phytoplankton, the cornerstone of the sea's rich ecosystem." It also says, "The Bering Sea's unusual productiveness is due to diatoms, a large phytoplankton, of which there are approximately 100,000 species. 'Because they're large, diatoms are eaten by large zooplankton, which are then eaten by large fish,' Dr. Hutchins explained. But in the study scientists found that a warmer Bering Sea would support only smaller phytoplankton, creating a vastly different, less-productive ecosystem. 'The food chain seems to be changing in a way that is not supporting these top predators, of which, of course, we're the biggest,' Dr. Hutchins said."

5&6. I believe this source because the logic seems to be in place and everything it explains shows a direct relation with each other.


Source 3:
http://www.foxnews.com/story/0,2933,176054,00.html

1. The source is the World Wide Fund for Nature.

2. Credentials: it's world wide!, they are a group

3. The source is very credible.

4. The source says, "Higher water temperatures are threatening the world's fish by reducing food stocks and stunting growth, which could cause them to reproduce less, the World Wide Fund for Nature said Friday."
"Global warming is causing the world's rivers, lakes and oceans to heat up, and some temperate fish like salmon, catfish and sturgeon cannot spawn at all if winter temperatures do not drop below a certain level, according to the Gland, Switzerland-based conservation group."

5&6. I believe this source because it is very credible and the information seems logical.


I believe this fact because the information that I have researched backs the fact up in a logical explanation.