@article {Quattrini2015,
	title = {{Testing the depth-differentiation hypothesis in a deepwater octocoral}},
	journal = {Proceedings of the Royal Society B: Biological Sciences},
	volume = {282},
	number = {1807},
	year = {2015},
	pages = {20150008},
	abstract = {The depth-differentiation hypothesis proposes that the bathyal region is a source of genetic diversity and an area where there is a high rate of species formation. Genetic differentiation should thus occur over relatively small vertical distances, particularly along the upper continental slope (200-1000 m) where oceanography varies greatly over small differences in depth. To test whether genetic differentiation within deepwater octocorals is greater over vertical rather than geographical distances, Callogorgia delta was targeted. This species commonly occurs throughout the northern Gulf of Mexico at depths ranging from 400 to 900 m. We found significant genetic differentiation (FST = 0.042) across seven sites spanning 400 km of distance and 400 m of depth. A pattern of isolation by depth emerged, but geographical distance between sites may further limit gene flow. Water mass boundaries may serve to isolate populations across depth; however, adaptive divergence with depth is also a possible scenario. Microsatellite markers also revealed significant genetic differentiation (FST = 0.434) between C. delta and a closely related species, Callogorgia americana, demonstrating the utility of microsatellites in species delimitation of octocorals. Results provided support for the depth-differentiation hypothesis, strengthening the notion that factors covarying with depth serve as isolation mechanisms in deep-sea populations.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	doi = {10.1098/rspb.2015.0008},
	author = {Quattrini, A M and Baums, I B and Shank, T M and Morrison, C and Cordes, E E}
}
@article {Bernhard2014,
	title = {{Benthic protists and fungi of Mediterranean deep hypsersaline anoxic basin redoxcline sediments}},
	journal = {Frontiers in Microbiology},
	volume = {5},
	year = {2014},
	pages = {605},
	abstract = {Some of the most extreme marine habitats known are the Mediterranean deep hypersaline anoxic basins (DHABs; water depth \~{}3500 m). Brines of DHABs are nearly saturated with salt, leading many to suspect they are uninhabitable for eukaryotes. While diverse bacterial and protistan communities are reported from some DHAB water-column haloclines and brines, the existence and activity of benthic DHAB protists have rarely been explored. Here, we report findings regarding protists and fungi recovered from sediments of three DHAB (Discovery, Urania, L{\textquoteright} Atalante) haloclines, and compare these to communities from sediments underlying normoxic waters of typical Mediterranean salinity. Halocline sediments, where the redoxcline impinges the seafloor, were studied from all three DHABs. Microscopic cell counts suggested that halocline sediments supported denser protist populations than those in adjacent control sediments. Pyrosequencing analysis based on ribosomal RNA detected eukaryotic ribotypes in the halocline sediments from each of the three DHABs, most of which were fungi. Sequences affiliated with Ustilaginomycotina Basidiomycota were the most abundant eukaryotic signatures detected. Benthic communities in these DHABs appeared to differ, as expected, due to differing brine chemistries. Microscopy indicated that only a low proportion of protists appeared to bear associated putative symbionts. In a considerable number of cases, when prokaryotes were associated with a protist, DAPI staining did not reveal presence of any nuclei, suggesting that at least some protists were carcasses inhabited by prokaryotic scavengers.},
	keywords = {ROV Jason (Remotely Operated Vehicle)},
	doi = {10.3389/fmicb.2014.00605},
	author = {Bernhard, J M and Kormas, K and Pachiadaki, M and Rocke, E and Beaudoin, D J and Morrison, C and Visscher, P T and Cobban, A and Starczak, V R and Edgcomb, V P}
}
@article {Roberts2007a,
	title = {{Alvin explores the deep northern Gulf of Mexico Slope}},
	journal = {EOS, Transactions, American Geophysical Union},
	volume = {88},
	number = {35},
	year = {2007},
	pages = {341{\textendash}342},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {2324-9250},
	doi = {10.1029/2007EO350001},
	url = {http://dx.doi.org/10.1029/2007EO350001},
	author = {Roberts, H and Carney, R and Kupchik, M and Fisher, C R and Nelson, Kim and Becker, E and Goehring, E and Lessard-Pilon, S and Telesnicki, G and Bernard, B and Brooks, J and Bright, M and Cordes, E and Hourdez, S and Hunt, J and Shedd, W and Boland, G and Joye, S and Samarkin, V and Bernier, M and Bowles, M and MacDonald, I and Niemann, H and Petersen, C and Morrison, C and Potter, J}
}
