Spreadsheet: 0982306c-0a94-494b-805b-f2d176da5aac
Sheet: Sheet1

Unnamed: 0 | Unnamed: 1 | Unnamed: 2 | Unnamed: 3 | Unnamed: 4 | Unnamed: 5 | Unnamed: 6 | Unnamed: 7 | Unnamed: 8 | Unnamed: 9 | Unnamed: 10 | Unnamed: 11 | Unnamed: 12
Table S1. Environmental characteristics of sampling locations.
ID | Sample Location | Country | [NAME] (m) | Water Depth (m) | T (oC)a | Sb (ppt) | [NAME] (μm) | Habitat Type | [NAME] a (ug L-1) Monthly avg       (± SE) | TSIc | [NAME] | Biogeographic region (Temperate/Tropical)
GS00a | [NAME] 13 and 11 | [NAME] (UK) | 5 | >4200 | 20.0    20.5 | 36.6   36.7 | 0.1-0.8 | Open Ocean | 0.17 (0.0.9±0.02) | 13.2171033806483 | Oligotrophic | Tropical
GS00b | [NAME] 13 and 11 | [NAME] (UK) | 5 | >4200 | 20.0    20.5 | 36.6   36.7 | 0.22- 0.8 | Open Ocean | 0.17 (0.0.9±0.02) | 13.2171033806483 | Oligotrophic | Tropical
GS00c | [NAME] 3 | [NAME] (UK) | 5 | >4200 | 19.8 | 36.7 | 0.22-0.8 | Open Ocean | 0.17 (0.0.9±0.02) | 13.2171033806483 | Oligotrophic | Tropical
GS00d | [NAME] 13 | [NAME] (UK) | 5 | >4200 | 20 | 36.6 | 0.22-0.8 | Open Ocean | 0.17 (0.0.9±0.02) | 13.2171033806483 | Oligotrophic | Tropical
GS01a | Hydrostation S | [NAME] (UK) | 5 | >4200 | 22.9 | 36.7 | 3.0-20 | Open Ocean | 0.10 (0.10±0.01) | 8.011640237728415 | Oligotrophic | Tropical
GS01b | Hydrostation S | [NAME] (UK) | 5 | >4201 | 22.9 | 36.7 | 0.8-3.0 | Open Ocean | 0.10 (0.10±0.01) | 8.011640237728415 | Oligotrophic | Tropical
GS01c | Hydrostation S | [NAME] (UK) | 5 | >4202 | 22.9 | 36.7 | 0.1-0.8 | Open Ocean | 0.1 (0.1+0.01) | 8.011640237728415 | Oligotrophic | Tropical
GS02 | Gulf of Maine | USA | 1 | 106 | 18.2 | 29.2 | 0.1-0.8 | Coastal | 1.4  (1.12±0.19) | 33.9007926412541 | Oligo/Meso | Temperate
GS03 | Browns Bank, Gulf of Maine | Canada | 1 | 119 | 11.7 | 29.9 | 0.1-0.8 | Coastal | 1.4 (1.12±0.19) | 33.9007926412541 | Oligo/Meso | Temperate
GS04 | Outside Halifax, Nova Scotia | Canada | 2 | 142 | 17.3 | 28.3 | 0.1-0.8 | Coastal | 0.4 (0.78±0.17) | 21.61118792031454 | Oligotrophic | Temperate
GS05 | [NAME], Nova Scotia | Canada | 1 | 64 | 15 | 30.2 | 0.1-0.8 | Embayment | 6 (6.76±0.98) | 48.17716039312722 | Mesotrophic | Temperate
GS06 | Bay of Fundy, Nova Scotia | Canada | 1 | 11 | 11.2 |  | 0.1-0.8 | Estuary | 2.8 (1.87±0.18) | 40.70056648254716 | Mesotrophic | Temperate
GS07 | Northern Gulf of Maine | Canada | 1 | 139 | 17.9 | 31.7e | 0.1-0.8 | Coastal | 1.4 (1.12±0.19) | 33.9007926412541 | Oligo/Meso | Temperate
GS08 | Newport Harbor, RI | USA | 1 | 12 | 9.4 | 26.5e | 0.1-0.8 | [NAME] | 2.2 (1.59±0.17) | 38.33476670517349 | Oligo/Meso | Temperate
GS09 | Block Island, NY | USA | 1 | 32 | 11 | 31.0e | 0.1-0.8 | Coastal | 4.0 (2.72±0.24) | 44.19954768258613 | Mesotrophic | Temperate
GS10 | Cape May, NJ | USA | 1 | 10 | 12 | 31.0e | 0.1-0.8 | Coastal | 2.0 (2.75±0.33) | 37.39977384129307 | Oligo/Meso | Temperate
GS11 | Delaware Bay, NJ | USA | 1 | 8 | 11 |  | 0.1-0.8 | Estuary | 4.8 (9.23±1.02) | 45.98812215473482 | Mesotrophic | Temperate
GS12 | [NAME], MD | USA | 1 | 25 | 3.2 | 3.47e | 0.1-0.8 | Estuary | 21.0 (15.0±1.01) | 60.46676511406678 | Eutrophic | Temperate
GS13 | Off Nags Head, NC | USA | 1 | 20 | 9.25 |  | 0.1-0.8 | Coastal | 3.0 (2.24±0.25) | 41.37738655183416 | Mesotrophic | Temperate
GS14 | South of Charleston, SC | USA | 1 | 31 | 18.6 |  | 0.1-0.8 | Coastal | 1.70 (1.92±0.25) | 35.80546314291989 | Oligo/Meso | Temperate
GS15 | [NAME], FL | USA | 2 | 47 | 25.3 | 36 | 0.1-0.8 | Coastal | 0.2 (0.27±0.09) | 14.81141407902148 | Oligotrophic | Tropical
GS16 | Gulf of Mexico | USA | 2 | 3333 | 26.4 | 35.8 | 0.1-0.8 | Coastal Sea | 0.16 (0.11±0.01) | 12.62237584062908 | Oligotrophic | Tropical
GS17 | Yucatan Channel | Mexico | 2 | 4513 | 27 | 35.8 | 0.1-0.8 | Open Ocean | 0.13 (0.09±0.01) | 10.5854336721545 | Oligotrophic | Tropical
GS18 | Rosario Bank | Honduras | 2 | 4470 | 27.4 | 35.4 | 0.1-0.8 | Open Ocean | 0.14 (0.09±0.01) | 11.31243287898251 | Oligotrophic | Tropical
GS19 | Northeast of Colón | Panama | 2 | 3336 | 27.7 | 35.4 | 0.1-0.8 | Coastal | 0.23 (0.15±0.02) | 16.18247873372178 | Oligotrophic | Tropical
GS20 | Lake Gatun | Panama | 2 | 4 | 28.5 | 0.06 | 0.1-0.8 | Fresh Water |  |  |  | Tropical
GS21 | Gulf of Panama | Panama | 2 | 76 | 27.6 | 30.7 | 0.1-0.8 | Coastal | 0.50 (0.73±0.22) | 23.80022615870694 | Oligotrophic | Tropical
GS22 | 250 miles from Panama City | Panama | 2 | 2431 | 29.3 | 32.3 | 0.1-0.8 | Open Ocean | 0.33 (0.28±0.02) | 19.72401965344299 | Oligotrophic | Tropical
GS23 | 30 miles from Cocos Island | Costa Rica | 2 | 1139 | 28.7 | 32.6 | 0.1-0.8 | Open Ocean | 0.07 (0.19±0.02) | 4.512659037689449 | Oligotrophic | Tropical
GS25 | [NAME], Cocos Island | Costa Rica | 1.1 | 30 | 28.3 | 31.4 | 0.8-3.0 | Fringing Reef | 0.11 (0.19±0.01) | 8.946633101608839 | Oligotrophic | Tropical
GS26 | 134 miles NE of Galapagos | Ecuador | 2 | 2376 | 27.8 | 32.6 | 0.1-0.8 | Open Ocean | 0.22 (0.28±0.02) | 15.7464069429019 | Oligotrophic | Tropical
GS27 | Devil's Crown, Floreana Island | Ecuador | 2 | 2.3 | 25.5 | 34.9 | 0.1-0.8 | Coastal | 0.40 (0.38±0.03) | 21.61118792031454 | Oligotrophic | Tropical
GS28 | Coastal Floreana | Ecuador | 2 | 156 | 25.0e |  | 0.1-0.8 | Coastal | 0.35 (0.35±0.02) | 20.30124495866797 | Oligotrophic | Tropical
GS29 | North James Bay, Santigo Island | Ecuador | 2 | 12 | 26.2 | 34.5 | 0.1-0.8 | Coastal/Bay | 0.40 (0.39±0.03) | 21.61118792031454 | Oligotrophic | Tropical
GS30 | Warm seep, [NAME] | Ecuador | 19 | 19 | 26.9 |  | 0.1-0.8 | [NAME] |  |  |  | Tropical
GS31 | Upwelling, Fernandina Island | Ecuador | 12 | 19 | 18.6 |  | 0.1-0.8 | Coastal upwelling | 0.35 (0.39±0.03) | 20.30124495866797 | Oligotrophic | Tropical
GS32 | Mangrove on Isabella Island | Ecuador | 0.33 | 0.67 | 25.4 |  | 0.1-0.8 | Mangrove |  |  |  | Tropical
GS33 | [NAME], Hypersaline Lagoon, Floreana Island | Ecuador | 0.2 | 0.33 | 37.6 | 46e | 0.1-0.8 | Hypersaline |  |  |  | Tropical
GS34 | North Seamore Island | Ecuador | 2 | 35 | 27.5 |  | 0.1-0.8 | Coastal | 0.36 (0.35±0.02) | 20.57760126171127 | Oligotrophic | Tropical
GS35 | Wolf Island | Ecuador | 2 | 71 | 21.8 | 34.5 | 0.1-0.8 | Coastal | 0.28 (0.31±0.02) | 18.11220672027558 | Oligotrophic | Tropical
GS36 | [NAME], Isabella Island | Ecuador | 2 | 67 | 25.8 | 34.6 | 0.1-0.8 | Coastal | 0.65 (0.45±0.05) | 26.37401959313302 | Oligotrophic | Tropical
GS37 | Equatorial Pacific [NAME] | International | 2 | 3334 | 28.8 |  | 0.1-0.8 | Open Ocean | 0.21 (0.24±0.02) | 15.2900455895236 | Oligotrophic | Tropical
GS47 | 201miles from French Polynesia | International | 30 | 2400 | 28.6 | 37.3 | 0.1-0.8 | Open Ocean |  |  |  | Tropical
GS51 | [NAME] | French [NAME] (FR) | 1 | 10 | 27.3 | 34.2 | 0.1-0.8 | Coral Reef Atoll |  |  |  | Tropical
a Temperature
b Salinity
c [NAME] (TSI)
d Derived from TSI
e Measurements were acquired from nearby vessels and/or research stations