Climate change challenges the survival of fish across the world

by khill06 on October 6, 2017 - 9:59pm


Researchers have been studying how vulnerable the worlds freshwater and marine fish are to climate change. Studies are being done to identify the areas which will be most at risk and develop a plan to conserve fish in danger. Studies showed that there was a variation between ocean dwelling fish and freshwater fish where ocean dwelling fish can handle warmer temperatures. However, regardless of the variation both fish will be forced to move to normal temperature or adapt quickly to warming climates. Scientists suggest if they are unable to migrate or adapt they will eventually die off and given past evolutionary rates fish will unlikely be able to keep up with warming temperatures.

 Researchers suggest that acting to restore vegetation around streams and lakes can help slow the process of warming by shading the area, though this will only be a temporary fixture (University of Washington). This also doesn’t suggest any type of solution for ocean dwelling fish who are also affected by warming waters.

Personally, I believe that there is some uncertainty with the researchers because although there is evidence of rising temperatures, there is no evidence of fluctuations or any other drivers as to why fish are dying off. Simply, the scientists are strictly blaming warming waters.

The conceptions of nature matter and nature is arguably unpredictable (Roth 2017). Climate change alone is an ecological uncertainty itself because it can change at any time (Roth 2017). The study only experimented with continuous high rising temperatures, but doesn’t include seasonal changes or possible cold temperature sweeping in.

Researchers also are unable to understand the biological interactions. Warming of water temperatures can cause fish to die off yes, but there are other factors that are not mentioned. For instance, more dominate species, human interaction with the environment, or change in the landform.

A reasonable instrument regarding climate change and the survival of fish may include public outreach and education (Roth 2017). The public is unaware of all the effects occurring in the world because of climate change, so reaching out may be a better solution. It can encourage the public to act willingly and with no cost.


Roth, R. (2017). Lecture Notes “Implementing Resource Management”. Management of the       Biophysical Environment GEOG3210, University of Guelph, October 2 2017.


 Roth, R. (2017). Lecture Notes “Policy Implementation in the Context of Political and Ecological             Uncertainty”. Management of the Biophysical Environment GEOG3210, University of        Guelph, October 4 2017.


 University of Washington. (2017). Climate Change Challenges the survival of fish across the        world. Science Daily. Retrieved October 6, 2017 from                                                            




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