[Allegra]

But....but, what if there is no global warming?

What's the explanation then?

[freeandfreezing]

Assuming that the hypothesis of the author is remotely close to correct (and I doubt it is) local climactic changes could be the cause instead of global climactic changes. See for example: NASA DATA SHOWS DEFORESTATION AFFECTS CLIMATE IN THE AMAZON

But just starting off assuming that a 1 or 2 degree shift in average temperature would cause the observed increase in amphibian fungal infections is kind of silly. Just moving a few miles away from a body of water, or increasing elevation can change the local climate average temperatures by a few degrees. So if temperature was the cause the amphibian fungal infections would track with the local microclimate, right? And that microclimate has been around for a long, long time -- like since the lake was formed, or the hills were pushed up by geological phenomena.