H
Hello Laurie
Not wanting to upset "the believers", I cannot help but wonder if these
researchers ever considered that a decline of Antarctic Krill could be
caused by the exponential increase of Cetaceans that has occurred over
the past two decades. Is it true that a current population estimate of
just one species, the humpback whale has now reached 80,000
individuals? About five years ago, the population estimate at that
time had increased to 35,000 animals?
See
http://en.wikipedia.org/wiki/List_of_cetaceans#Global_Population_Estimates
or http://whaleone.com.au/whale-facts/
As a part time researcher from a time nearing the end of the commercial
whaling era when it was rare to sight a large whale in Australian
waters, I occasionally pondered the effects on the pelagic world from
competition on the basic marine food source impacted by the presence or
absence of Cetaceans.
My conclusion was that you cannot have your krill and eat it too.
regards
Ian May
PO Box 110
St Helens, 7216
------------------------------------------------------------------------
Laurie Knight wrote:
The following study contrasts the fortunes of Chinstrap and Gentoo Penguins
see http://www.sciencedaily.com/releases/2015/01/150120121304.htm
Original study: MJ Polito, WZ Trivelpiece, WP Patterson, NJ Karnovsky, CS
Reiss, SD Emslie. Contrasting specialist and generalist patterns facilitate
foraging niche partitioning in sympatric populations of Pygoscelis penguins.
Marine Ecology Progress Series, 2015; 519: 221 DOI: 10.3354/meps11095
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