Don't worry: >Aquatic ecosystems are complex with some isotopic variability even within the same species of seaweed, freshwater algae, and freshwater aquatic p

Don't worry: >Aquatic ecosystems are complex with some isotopic variability even within the same species of seaweed, freshwater algae, and freshwater aquatic plants (macrophytes), making use of this C&N isotopic data to detect these resources somewhat challenging, certainly where it represents <20% of the diet. Moreover, while stable isotopic analysis remains valuable in providing a broad view of major foods consumed, this is dependent on the dietary protein intake, with seaweeds lower in protein compared to meat or fish, and can therefore be overlooked due to equifinality, where other foods can, in combination, be used to explain the stable isotopic data observed, sometimes in contradiction to other archaeological evidence available. https://www.nature.com/articles/s41467-023-41671-2#Sec8 https://www.nature.com/articles/s41467-023-41671-2#Sec8