The use of pulse-amplitude-modulated fluorometry (PAM) and rapid light curves (RLC) were
evaluated for monitoring the physiological condition of the seagrass, Thalassia testudinum,
at the landscape scale in Florida Bay, USA. PAM fluorometry provides rapid, non-invasive,
and quantitative physiological information on the state of photosynthesis. Yet, previous
studies of effective and maximum quantum yields have shown that problems arise when
expanding measurements from the organismal scale to the landscape scale, mainly due to …