Heatmap - weighted_unifrac Mantel correlation

[chiara (Chiara Conte)]

Dear All,
thanks in advance for your attention.
I am trying to run the beta-rarefaction: Beta diversity rarefaction using the weighted unifrac distance matrix.
My doubt is the interpretation of the heatmap weighted unifrac Mantel correlation.
Below the visualization link and attached the file
https://view.qiime2.org/visualization/?type=html&src=ab302397-6c08-479b-b066-0eb8cb29c95c

Could you please help me with it?

Thank you very much.

Best,
Chiara

[jwdebelius (Justine Debelius)]

Hi @chiara,

The heat map tells you the relationship between each of your rarefaction iterations. The mantel test lets you test for a correlation between two distance matrices. The heatmap shows the correlation between each of those distance matrices (it’s a lower triangle because the correlation is the same on the other side of the diagonal.) You have a high (very close to 1) correlation between the distance matrices, meaning the relationship between your samples is persevered during rarefaction.

Best,
Justine

[chiara (Chiara Conte)]

Thank you Justine for your clear explanation and your help!

Best regards,
Chiara