On 2013 Oct 23, Andrew R Kniss commented:

Although this paper provides necessary toxicity data on some common pesticides, the extension of that data to causing global amphibian decline is quite a leap (pun intended). Toxicity alone does not equal risk, and this paper (and many they cite) provide little information on the exposure aspect of risk. The authors also fail to provide context about other risks amphibians may face in the absence of pesticide use. If pesticides are removed, pests would still need to be controlled in agricultural fields. Those other pest management practices may be equally likely to harm amphibians. More information about the proper context for this study here.

On 2013 Oct 23, Andrew R Kniss commented:

Although this paper provides necessary toxicity data on some common pesticides, the extension of that data to causing global amphibian decline is quite a leap (pun intended). Toxicity alone does not equal risk, and this paper (and many they cite) provide little information on the exposure aspect of risk. The authors also fail to provide context about other risks amphibians may face in the absence of pesticide use. If pesticides are removed, pests would still need to be controlled in agricultural fields. Those other pest management practices may be equally likely to harm amphibians. More information about the proper context for this study here.