I am using plasma, RBC's and feather tissues that all need separate discrimination/enrichment/fractionation factors.
Discrimination factors for any goose species would be of great use.
If you have any expertise in this area please help!
Article Temporal and intrapopulation variation in prey choice of win...
and scroll down to the section entitled Isosource modelling.There are likely more recent diet-tissue discrimination factors - but also consider using the R package SIDER which will estimate appropriate factors for tissue and species. Article SIDER: An R package for predicting trophic discrimination fa...
cheers
Jason
Jason Newton Thank you for your response! I had already seen that article and the discrimination factors attributed to plasma and RBC's. (3·2 for δ 15
N and 1·45 for δ 13 C). As I understand, different tissues require separate discrimination factors due to individual turnover rates. Whereas in this study these values are used for plasma and RBC's. I am also interested in a discriminaton factor that I can use for feathers.
My next step will be to investigate SIDER. Thank you.
Diet-tissue discrimination factors and turnover of carbon and
nitrogen stable isotopes in tissues.
Issam Moussa Unfortunately these are not avian discrimination factors so I am unable to use them.
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