@article {ISI:000366233300014,
	title = {{Differences in recovery between deep-sea hydrothermal vent and vent-proximate communities after a volcanic eruption}},
	journal = {DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS},
	volume = {106},
	year = {2015},
	month = {dec},
	pages = {167{\textendash}182},
	type = {Article},
	abstract = {Deep-sea hydrothermal vents and the surrounding basalt seafloor are subject to major natural disturbance events such as volcanic eruptions. In the near future, anthropogenic disturbance in the form of deep-sea mining could also significantly affect the faunal communities of hydrothermal vents. In this study, we monitor and compare the recovery of insular, highly productive vent communities and vent-proximate basalt communities following a volcanic eruption that destroyed almost all existing communities at the East Pacific Rise, 9 degrees 50{\textquoteright}N in 2006. To study the recovery patterns of the benthic communities, we placed settlement substrates at vent sites and their proximate basalt areas and measured the prokaryotic abundance and compared the meio- and macrofaunal species richness and composition at one, two and four years after the eruption. In addition, we collected samples from the overlying water column with a pelagic pump, at one and two years after the volcanic eruption, to determine the abundance of potential meiofauna colonisers. One year after eruption, mean meio- and macrofaunal abundances were not significantly different from pre-eruption values in vent habitats (meio: 8-1838 ind. 64 cm(-2) in 2006; 3-6246 ind. 64 cm(-2) in 2001/02; macro: 95-1600 ind. 64 cm(-2) in 2006; 205-4577 ind. 64 cm(-2) in 2001/02) and on non-vent basalt habitats (meio: 10-1922 ind. 64 cm(-2) in 2006; 8328 ind. 64 cm(-2) in 2003/04; macro: 14-3351 ind. 64 cm(-2) in 2006; 2-63 ind. 64 cm(-2) in 2003/04), but species recovery patterns differed between the two habitat types. In the vent habitat, the initial community recovery was relatively quick but incomplete four years after eruption, which may be due to the good dispersal capabilities of vent endemic macrofauna and vent endemic dirivultid copepods. At vents, 42{\%} of the pre-eruption meio- and 39{\%} of macrofaunal species had returned. In addition, some new species not evident prior to the eruption were found. At the tubeworm site Tica, a total of 26 meio- and 19 macrofaunal species were found in 2009, which contrasts with the 24 meio- and 29 macrofauna species detected at the site in 2001/01 In the basalt habitat, community recovery of meiofauna was slower with only 28{\%} of the original 64 species present four years after eruption. The more limited dispersal capabilities of meiofauna basalt specialists such as nematodes or harpacticoid copepods probably caused this pattern. In contrast, 67{\%} of the original 27 macrofaunal species had recolonized the basalt by 2009. Our results suggest that not only vent communities, but also species-rich communities of vent-proximate habitats require attention in conservation efforts. (C) 2015 Elsevier Ltd. All rights reserved.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0967-0637},
	doi = {10.1016/j.dsr.2015.10.008},
	author = {Gollner, Sabine and Govenar, Breea and Arbizu, Pedro Martinez and Mills, Susan and Le Bris, Nadine and Weinbauer, Markus and Shank, Timothy M and Bright, Monika}
}
@article {ISI:000301945500007,
	title = {{Physiological homogeneity among the endosymbionts of Riftia pachyptila and Tevnia jerichonana revealed by proteogenomics}},
	journal = {ISME JOURNAL},
	volume = {6},
	number = {4},
	year = {2012},
	month = {apr},
	pages = {766{\textendash}776},
	type = {Article},
	abstract = {The two closely related deep-sea tubeworms Riftia pachyptila and Tevnia jerichonana both rely exclusively on a single species of sulfide-oxidizing endosymbiotic bacteria for their nutrition. They do, however, thrive in markedly different geochemical conditions. A detailed proteogenomic comparison of the endosymbionts coupled with an in situ characterization of the geochemical environment was performed to investigate their roles and expression profiles in the two respective hosts. The metagenomes indicated that the endosymbionts are genotypically highly homogeneous. Gene sequences coding for enzymes of selected key metabolic functions were found to be 99.9{\%} identical. On the proteomic level, the symbionts showed very consistent metabolic profiles, despite distinctly different geochemical conditions at the plume level of the respective hosts. Only a few minor variations were observed in the expression of symbiont enzymes involved in sulfur metabolism, carbon fixation and in the response to oxidative stress. Although these changes correspond to the prevailing environmental situation experienced by each host, our data strongly suggest that the two tubeworm species are able to effectively attenuate differences in habitat conditions, and thus to provide their symbionts with similar micro-environments. The ISME Journal (2012) 6, 766-776; doi: 10.1038/ismej.2011.137; published online 20 October 2011},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {1751-7362},
	doi = {10.1038/ismej.2011.137},
	author = {Gardebrecht, Antje and Markert, Stephanie and Sievert, Stefan M and Felbeck, Horst and Thuermer, Andrea and Albrecht, Dirk and Wollherr, Antje and Kabisch, Johannes and Le Bris, Nadine and Lehmann, Ruediger and Daniel, Rolf and Liesegang, Heiko and Hecker, Michael and Schweder, Thomas}
}
@article {ISI:000299199000017,
	title = {{Response of hydrothermal vent vestimentiferan Riftia pachyptila to differences in habitat chemistry}},
	journal = {MARINE BIOLOGY},
	volume = {159},
	number = {2},
	year = {2012},
	month = {feb},
	pages = {435{\textendash}442},
	type = {Article},
	abstract = {Vestimentiferan tubeworms, which rely on intracellular sulfide-oxidizing autotrophic bacteria for organic carbon, flourish at deep-sea hydrothermal vents despite the erratic nature of their habitat. To assess the degree to which differences in habitat chemistry (sulfide, pH/CO(2)) might impact host and symbiont metabolic activity, Riftia pachyptila tubeworms were collected from habitats with low (H(2)S {\textless} 0.0001 mM) and high (up to 0.7 mM) sulfide concentrations. The elemental sulfur content of the symbiont-containing trophosome organ was lower in specimens collected from the low-sulfide site. Symbiont abundance, RubisCO activity, and trophosome carbon fixation rates were not significantly different for individuals collected from low- versus high-sulfide habitats. Carbonic anhydrase activities were higher in the anterior gas exchange organs of R. pachyptila from the low-sulfide habitat. Despite large differences in habitat chemistry, symbiont abundance and autotrophic potential were consistent, while the host appears to tailor carbonic anhydrase activity to environmental CO(2) availability.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0025-3162},
	doi = {10.1007/s00227-011-1821-5},
	author = {Scott, Kathleen M and Boller, Amanda J and Dobrinski, Kimberly P and Le Bris, Nadine}
}
