@article {Becker2011,
	title = {{Stable isotopes provide new insights into vestimentiferan physiological ecology at Gulf of Mexico cold seeps}},
	journal = {Naturwissenschaften},
	volume = {98},
	number = {2},
	year = {2011},
	month = {feb},
	pages = {169{\textendash}174},
	abstract = {On the otherwise low-biomass seafloor of the Gulf of Mexico (GoM) continental slope, natural oil and gas seeps are oases of local primary production that support lush animal communities. Hundreds of seep communities have been documented on the continental slope, and nutrition derived from seeps could be an important link in the overall GoM food web. Here, we present a uniquely large and cohesive data set of $δ$13C, $δ$15N, and $δ$34S compositions of the vestimentiferan tubeworms Escarpia laminata and Lamellibrachia sp. 1, which dominate biomass at GoM seeps and provide habitat for hundreds of other species. Our sampling design encompassed an entire region of the GoM lower slope, allowing us for the first time to assess spatial variability in isotope compositions and to robustly address long-standing hypotheses about how vestimentiferans acquire and cycle nutrients over their long lifespan (200+~years). Tissue $δ$13C values provided strong evidence that larger adult vestimentiferans use their buried roots to take up dissolved inorganic carbon from sediment pore water, while very small individuals use their plume to take up carbon dioxide from the seawater. $δ$34S values were extremely variable among individuals of the same species within one location (S values were extremely variable among individuals of the same species within one location (2 area), indicating high variability in the inorganic sulfur pools on a very small spatial scale. This finding supports the hypothesis that vestimentiferans use their roots to cycle sulfate and sulfide between their symbionts and free-living consortia of sulfate-reducing archaea in the sediment. Finally, consistent differences in $δ$15N between two cooccurring vestimentiferan species provided the first strong evidence for partitioning of inorganic resources, which has significant implications for the ecology and evolution of this taxonomic group.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0028-1042},
	doi = {10.1007/s00114-010-0754-z},
	author = {Becker, E L and Macko, S A and Lee, R W and Fisher, C R}
}
@article {Becker2010,
	title = {{Stable carbon and nitrogen isotope compositions of hydrocarbon-seep bivalves on the Gulf of Mexico lower continental slope}},
	journal = {Deep-Sea Research. Part II: Topical Studies in Oceanography},
	volume = {57},
	number = {21-23},
	year = {2010},
	pages = {1957{\textendash}1964},
	abstract = {Stable isotope compositions of cold-seep bivalves can illuminate processes that affect the chemical and isotopic compositions of seeping fluids along the continental slope of the Gulf of Mexico as well as provide insight into the physiological ecology of these species. Carbon and nitrogen isotope compositions were analyzed in mussels and clams from 14 seep sites spanning a depth range of 1000 to 2800 m along the lower Louisiana slope of the Gulf of Mexico. Mussels of three species found on the lower slope, Bathymodiolus childressi, B. brooksi, and B. heckerae, showed site-specific differences in tissue $δ$13C, reflecting differences in the local methane pool. Mussels from sites on the lower slope sitting atop the contiguous salt sheet generally had tissue $δ$13C values that reflected a stronger biogenic methane signal (-70.8 to -58.8{\textperthousand}) than mussels on the upper slope or seaward of the Sigsbee Escarpment (-67.3 to -40.4{\textperthousand}). Clams (Calyptogena ponderosa and Calyptogena sp. nov.) had a narrow range of $δ$13C values between -37.0 and -34.4{\textperthousand}, indicating that their thiotrophic symbionts are fixing primarily seawater-dissolved organic carbon. The most depleted tissue $δ$15N values yet published for both mussels and clams are reported in this study at -23.7 and -9.2{\textperthousand}, respectively. These depleted values have implications for the assimilation of inorganic nitrogen by these symbioses and the concentrations of particular inorganic nitrogen sources in the local environment.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0967-0645},
	doi = {10.1016/j.dsr2.2010.05.002},
	url = {http://dx.doi.org/10.1016/j.dsr2.2010.05.002},
	author = {Becker, E L and Lee, R W and Macko, S A and Faure, B M and Fisher, C R}
}
@article {Heyl2007,
	title = {{Characteristics of vesicomyid clams and their environment at the Blake Ridge cold seep, South Carolina, USA}},
	journal = {Marine Ecology Progress Series},
	volume = {339},
	year = {2007},
	pages = {169{\textendash}184},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0171-8630},
	doi = {10.3354/meps339169},
	url = {http://dx.doi.org/10.3354/meps339169},
	author = {Heyl, T P and Gilhooly, W P and Chambers, R M and Gilchrist, G W and Macko, S A and Ruppel, C D and Van Dover, C L}
}
@article {Bergquist2007,
	title = {{Using stable isotopes and quantitative community characteristics to determine a local hydrothermal vent food web}},
	journal = {Marine Ecology Progress Series},
	volume = {330},
	year = {2007},
	pages = {49{\textendash}65},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0171-8630},
	doi = {10.3354/meps330049},
	url = {http://dx.doi.org/10.3354/meps330049},
	author = {Bergquist, D C and Eckner, J T and Urcuyo, I A and Cordes, E E and Hourdez, S and Macko, S A and Fisher, C R}
}
@article {Salerno2005,
	title = {{Characterization of symbiont populations in life-history stages of mussels from chemosynthetic environments}},
	journal = {Biological Bulletin},
	volume = {208},
	number = {2},
	year = {2005},
	pages = {145{\textendash}155},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0006-3185},
	url = {http://www.biolbull.org/cgi/content/abstract/208/2/145},
	author = {Salerno, J L and Macko, S A and Hallam, S J and Bright, M and Won, Y -J and McKiness, Z and Van Dover, C L}
}
@article {Raulfs2004,
	title = {{Tissue and symbiont condition of mussels (Bathymodiolus thermophilus) exposed to varying levels of hydrothermal activity}},
	journal = {Journal of the Marine Biological Association of the United Kingdom},
	volume = {84},
	number = {1},
	year = {2004},
	pages = {229{\textendash}234},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0025-3154},
	doi = {10.1017/S0025315404009087h},
	url = {http://dx.doi.org/10.1017/S0025315404009087h},
	author = {Raulfs, E C and Macko, S A and Van Dover, C L}
}
@article {VanDover2003a,
	title = {{Blake Ridge methane seeps: Characterization of a soft-sediment, chemosynthetically based ecosystem}},
	journal = {Deep-Sea Research. Part I: Oceanographic Research Papers},
	volume = {50},
	number = {2},
	year = {2003},
	pages = {281{\textendash}300},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0967-0637},
	doi = {10.1016/S0967-0637(02)00162-0},
	url = {http://dx.doi.org/10.1016/S0967-0637(02)00162-0},
	author = {Van Dover, C L and Aharon, P and Bernhard, J M and Caylor, E and Doerries, M B and Flickinger, W and Gilhooly, W and Goffredi, S K and Knick, K E and Macko, S A and Rapoport, S and Raulfs, E C and Ruppel, C and Salerno, J L and Seitz, R D and Sen Gupta, B K and Shank, T M and Turnipseed, M and Vrijenhoek, R C}
}
@article {Scott1999,
	title = {{Carbon dioxide use by chemoautotrophic endosymbionts of hydrothermal vent vestimentiferans: affinities for carbon dioxide, absence of carboxysomes, and delta C-13 values}},
	journal = {Marine Biology},
	volume = {135},
	number = {1},
	year = {1999},
	month = {oct},
	pages = {25{\textendash}34},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0025-3162},
	doi = {10.1007/s002270050597},
	author = {Scott, K M and Bright, M and Macko, S A and Fisher, C R}
}
@article {Smith1998a,
	title = {{Sediment community structure around a whale skeleton in the deep Northeast Pacific: Macrofaunal, microbial and bioturbation effects}},
	journal = {Deep-Sea Research. Part II: Topical Studies in Oceanography},
	volume = {45},
	number = {1-3},
	year = {1998},
	pages = {335{\textendash}364},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0967-0645},
	doi = {10.1016/S0967-0645(97)00043-X},
	url = {http://dx.doi.org/10.1016/S0967-0645(97)00043-X},
	author = {Smith, C R and Maybaum, H L and Baco, A R and Pope, R H and Carpenter, S D and Yager, P L and Macko, S A and Deming, J W}
}
@article {Fisher1988a,
	title = {{Microhabitat variation in the hydrothermal vent mussel, Bathymodiolus thermophilus, at Rose Garden}},
	journal = {Deep-Sea Research. Part A, Oceanographic Research Papers},
	volume = {35},
	number = {10-11},
	year = {1988},
	pages = {1769{\textendash}1791},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0198-0149},
	doi = {10.1016/0198-0149(88)90049-0},
	url = {http://dx.doi.org/10.1016/0198-0149(88)90049-0},
	author = {Fisher, C R and Childress, J J and Arp, A J and Brooks, J M and Distel, D L and Favuzzi, J A and Felbeck, H and Hessler, R R and Johnson, K S and Kennicutt, M C and Macko, S A and Newton, A and Powell, M A and Somero, G N and Soto, T}
}
@article {Fisher1988b,
	title = {{Physiology, morphology, and biochemical composition of Riftia pachyptila at Rose Garden in 1985}},
	journal = {Deep-Sea Research. Part A, Oceanographic Research Papers},
	volume = {35},
	number = {10-11},
	year = {1988},
	pages = {1745{\textendash}1758},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0198-0149},
	doi = {10.1016/0198-0149(88)90047-7},
	url = {http://dx.doi.org/10.1016/0198-0149(88)90047-7},
	author = {Fisher, C R and Childress, J J and Arp, A J and Brooks, J M and Distel, D and Favuzzi, J A and Macko, S A and Newton, A and Powell, M A and Somero, G N and Soto, T}
}
@article {Fisher1988,
	title = {{Variation in the hydrothermal vent clam, Calyptogena magnifica, at Rose Garden vent on the Galapagos Spreading center}},
	journal = {Deep-Sea Research. Part A, Oceanographic Research Papers},
	volume = {35},
	number = {10-11},
	year = {1988},
	pages = {1811{\textendash}1832},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0198-0149},
	doi = {10.1016/0198-0149(88)90051-9},
	url = {http://dx.doi.org/10.1016/0198-0149(88)90051-9},
	author = {Fisher, C R and Childress, J J and Arp, A J and Brooks, J M and Distel, D L and Dugan, J A and Felbeck, H and Fritz, L W and Hessler, R R and Johnson, K S and Kennicutt, M C and Lutz, R A and Macko, S A and Newton, A and Powell, M A and Somero, G N and Soto, T}
}
