However, N constraints in this study are not responsible for different responses to forcings. (pnas.org)
[Response: It's clear from the data that there is no one time scale for the climate system response to forcings. (realclimate.org)
Our present understanding of the effects of ocean acidification, however, is reliant on empirical studies developed to ascertain species - specific responses to forcing. (rstb.royalsocietypublishing.org)