Monday, March 5, 2018

King penguins may be on the move very soon


A major issue currently in the marine science world is global warming.  Colonies of King penguins in Crozet, Kergeulen and Marine sub-Antarctic islands may eventually be nothing more than a memory in a few decades.  Global warming could lead to the King penguins moving south or even worse, disappearing completely.

Figure 1. King penguins

According to Robin Cristofari, the main issue is that there are not very many islands in the Southern Ocean and not all of them are conducive to support large breeding colonies for the penguins. As a matter of fact, King penguins are picky animals.  In order to form a colony where they can mate, lay eggs, and care for their chicks throughout the year, they require smooth beaches of sand, no winter sea ice near the island, and temperatures they can withstand year round. 


A trusted and consistent food source is what these penguins are most worried about. These seabirds food source has always came from the Antarctic Polar Front, which is an upwelling front in the Southern Ocean. Because of climate change, this area is moving away from the islands and drifting south.  Therefore, penguin parents have to swim even farther for food while their young are fasting on the shore.  This study predicts that the length of parents’ trip for food will exceed the resistance to starvation of their offspring which in turn, will lead to massive King penguin crashes in population size.  On the other hand, it may lead to relocation, which is what we can hope for.

On the bright side, King penguins have been able to survive crises in the past.  The only difference is that humans are now creating irreversible changes in the Earth system.  The Southern Ocean is now able to be industrially fished. Yet again, the King penguins are faced with another problem and could have an even harder time finding food.


References: University of Vienna. "King penguins may be on the move very soon." ScienceDaily. ScienceDaily, 26 February 2018. <www.sciencedaily.com/releases/2018/02/180226122528.htm>.


1 comment:

  1. This article is extremely interesting! Something to look into may be how large the population is for these penguins and also where the populations are dispersed. If they are dispersed in other areas as well, maybe they could be moved if the crisis gets too bad!

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