ABC Australia reports:
Growth rates of coral can override the climate information held in their skeletons, a study of giant corals has found.
The study, published in Geochemistry Geophysics Geosystems, indicates that scientists need to analyse multiple coral cores to build a picture of past climates…
“People speculate that we can reconstruct past climates from biological archives like tree rings and coral growth bands. But living things grow differently in different years depending on what is happening in the local area.”
“We need to be careful when reconstructing climate based on coral, and need to be able to replicate results from a number of different samples to create an accurate picture of past climate.”