Figure 1

Overview map and a schematic of coral distribution with depth within the Gulf of Mexico. (a) Sites of confirmed and potential impact on coral communities in the Gulf of Mexico following the Deepwater Horizon (DWH) oil spill (black square). Pink circles indicate mesophotic coral sites impacted by DWH including Alabama Alps Reef (AAR) and Roughtongue Reef (RTR). Green circles represent prominent Lophelia pertusa mounds where corals were collected for these experiments including Viosca Knoll 906 and 826 (VK906 and VK826). Yellow circles indicate impacted deep-coral sites after DWH including Mississippi Canyon 118, 294, 297, 334, and 507 (MC118, MC294, MC287, MC334, and MC507). Produced using ArcGIS 10, ESRI (www.arcgis.com). (b) A schematic of the cold-water coral communities of the Gulf of Mexico with depth. The depth profile corresponds to the black line in panel “a” drawn through AAR, VK906, and MC344. Examples of corals commonly found at each depth range/site include (from left to right): Swiftia exserta and Hypnogorgia pendula, at mesophotic sites (ARR), Lophelia pertusa mounds (VK906), and Leiopathes glaberrima and Paramuricea biscaya at deep coral sites (MC344). Note: corals not to scale, enlarged for effect.