How Climate Change is Affecting Cod by maggie dullea

What is happening to cod? How is this related to climate change?

Cod are becoming harder to find and fish because the water is not suitable for reproduction. This is highly related to climate change. Since cod typically thrive in cold water, the climate change is hurting the cod. The heat from the greenhouse gases in the atmosphere are turning the water warmer and warmer daily. The temperatures of the water in and around the Maine Gulf has increased by about .03 degrees Celsius (32.054 degrees Fahrenheit) since 1984 and it has no signs of stopping, according to Andrew Pershing, the chief scientist for the Gulf of Maine Research Institute in Portland, Maine.

This graph shows the decrease in cod from 1950-2010
According to sciencemag.org "When summer temperatures went up, the number of fish [specifically cod] reaching maturity went down"

Why is this important? How does learning about it help our understanding of climate change as a whole?

This is important because not only cod are being affected. Many other marine animals are being hurt and killed because of our doing. This helps our understanding of climate change as a whole because it shows how what we do can affect a whole species.

What is known about this topic? how have scientists learned about it?

Scientists learned about it from realizing that there was a drop in cod reproduction. Since cod reproduce in cold places, the warm water is making it very difficult for them. Scientist first learned about it when they realized that the amount of cod found was dropping. They realized that since the water near the top of the ocean was warmer than further down, so they swim further down to the bottom of the ocean. This can result in predators eating the cod.

What do we still not know about this topic? Is there a Controversy about it?

We don't know why warmer water has an affect on cod reproducing. If we could figure that out, it would be easier to come up with a solution to this problem. There is a controversy on this topic. The controversy is about cod being called "fish to avoid" in The North Seas and near Scotland. Many fishermen and women want to fish the cod because it is a good source of nutrients, and they often eat the cod.

Bibliography

Marianne LavelleOct. 29, 2015 , 2:00 PM, 2017 Lindzi WesselMar. 4, 2017 Warren CornwallMar. 3, Ariel Wittenberg, E&E NewsMar. 2, 2017, Hannah Northey, E&E NewsMar. 2, 2017, 2017 Dennis NormileMar. 2, 2017 Mar. 3, 2017 Mar. 2, 2017 Mar. 1, 2017 Feb. 28, and 2017 Feb. 27. "Collapse of New England's Iconic Cod Tied to Climate Change." Science | AAAS. N.p., 03 Feb. 2016. Web. 05 Mar. 2017.

"Climate Change Is Decimating Cod in the Gulf of Maine." Climate Central. N.p., 29 Oct. 2015. Web. 05 Mar. 2017.

Clive Fox Principal Investigator in Fisheries and Plankton Ecology, Scottish Association for Marine Science. "Hold That Cod – the North Sea Fish Controversy Isn't over Yet." The Conversation. N.p., 27 Jan. 2017. Web. 06 Mar. 2017.

Rich. "Warmer Gulf of Maine Clobbering the Cod, Study Finds." Wicked Local Cape Cod. Wicked Local Cape Cod, 27 Nov. 2015. Web. 06 Mar. 2017.

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