Terrestrial ecosystem change

What are the vegetation and climate signals recorded in compound specific isotope analysis of leaf waxes?

Environment and climate conditions are often interpreted from compound specific isotope analysis of leaf waxes, but how do these signals differ with vegetation type, temperature change, water stress, and carbon dioxide concentration? Each of these factors affect plant physiology and perhaps lipid biosynthesis. In addition, I am also curious how lake sediments record the vegetation signal - what is the influence of surrounding terrestrial vs. aquatic and local vs. regional? This research has implications for experimental design and data interpretation of paleoclimate studies seeking to use compound specific isotope analysis of leaf waxes.