[GladesGuru]

Anecdotal evidence. And two can play at that game.

The potato blight which caused the Irish famine and migration affected 1 plant in 1 country.

I am perplexed at your use of “anecdotal evidence” in either of the two cases. The whale/krill case is well documented, and anyone who doubts the Irish Potato Blight has only to look at the Kennedy Klan to realize that all levels of Ireland’s talent pool came here.

Perhaps correlation argument would fit better? As in 90% of all heroin addicts have a history of smoking pot. May be true, but so what - virtually 100% of heroin addicts have a milk history.

Causation is the essential issue, and whaling did reduce the whales, and reduced whales allowed for a larger krill population.

[The Comedian]

The Whale/krill example is anecdotal of a species die off, not necessarily indicative of how any particular ecosystem predator die-off would affect the prey population.

Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.