Tuesday, December 5, 2017

Disappearing Kelp

I'm going to change the subject from Coastal Home Decor and launch into a discussion related to Coastal Living.
That is the effect of global warming on marine life. 

Much of marine life is dependant on the food that kelp provides for fishes and other sea creatures.  This in turn, affects our coastal economy.

 The long-spine urchin cannot tolerate the temperatures in which kelp naturally flourish.  As the water warms, the kelp wilt and the urchins which like the warmer waters move in and devour the kelp. 

Below,  see the progression of the kelp decline in Tasmania over the last few decades.  The images are courtesy of Scott Ling from an article written by Alastair Bland for the Yale School of Forestry and Environmental Studies.





The area lost 95 % of its kelp by urchins.

Organizations in various parts of the world have begun reforestation projects.  Some by destroying urchins and others by introducing sea otters into the waters .  Sea otters are among the very few enemies of the urchins.

The question:  Is global warming just a part of a regular occurring cycle of temperature changes or is it caused by humans?  Or Both?
 
Join the disussion.  let us know how you feel.