Information for each community collection whose stable isotope data are displayed in Figures 5, 6 and 7.

Sample types are Bushmaster (bm), mussel pot (mp), or mussel scoop (ms). Dive numbers are from the DSV Alvin (41##) or ROV Jason II (J2-###).* The majority of these samples were analyzed for community composition in [2] and were already given ID numbers consisting of the site name followed by “t” or “m” for a vestimentiferan (tubeworm) or mussel collection, respectively, and a sequential number. Collections with “t- ” or “m- ” after the site name were not included in [2], because they were not quantitative samples.