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4. L

Author

Seewald, J. S., Eglinton, T. I., McLennan, Scott M., Miles, Douglas L., Palmer, Cynthia E. A., Mihaljevic, Martin, Long, Leon E., Rohmer, Michel, Chen, Ju-chin, Calas, G., Patchett, P. Jonathan, Marshall, Clare P., editor, and Fairbridge, Rhodes W., editor

Published
1999
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5. Diverse styles of submarine venting on the ultraslow spreading Mid-Cayman Rise

Author

German, C. R., Bowen, A., Coleman, M. L., Honig, D. L., Huber, J. A., Jakuba, M. V., Kinsey, J. C., Kurz, M. D., Leroy, S., McDermott, J. M., de Lépinay, B. Mercier, Nakamura, K., Seewald, J. S., Smith, J. L., Sylva, S. P., Van Dover, C. L., Whitcomb, L. L., Yoerger, D. R., and Hart, Stanley R.

Published
2010

9. 3-year results of the German nationwide survey on eye injuries caused by fireworks

Author

Gabel-Pfisterer, A., Boehringer, D., Agostini, H., Fuest, M., Walter, P., Botros, Y., Mueller, A., Al-Ashi, N., Lenglinger, M., Mueller, B., Schoenfeld, S., Seibel, I., Joussen, A., Breuss, H., Kuchenbecker, J., Foerster, M. H., Berthold, A., Wirbelauer, C., Hofmayer, H., Wachtlin, J., Palka, K., Niemeyer, M., Walla, T., Pham, D., Aisenbrey, S., Tatsiou, A., Walch, A., Burk, R., Schultz, T., Tsiampalis, N., Rehmann, J., Sliwowska, U., Schojai, M., Schulze, K., Kamguia, N., Wirtz, C., Dick, B., Voelker, D., Wintergerst, M., Pfau, M., Melzer, C., Hoegen, D., Bosch, F., Andresen, J. C., Krohne, T., Holz, F., Kathke, M., Sturm, A., Noske, W., Huebner, T., Brandner, S., Feldmann, M., Morsek, J., Rainer, O., Bartsch, H., Ewald, K., Chankiewitz, E., Siegmund, T., Bohlen, A., Mohr, A., Hecker, J., Strassburger, P., Furashova, O., Engelmann, K., Krieb, A., Emmerich, K., Grajewski, L., Krause, L., Jabur, A., Ruediger, K., Lehmann, F., Sachs, H., Matthee, E., Steindorf, F., Schnitzler, C., Neumann, I., Korbmacher, J., Geerling, G., Doulgkeridis, J., Erhard, J., Dahms-Dowidat, K., Kotiasvili, T., Jagow, B. V., Lieder, A., Blum, M., Westerkemper, H., Boehm, M., Bornfeld, N., Bechrakis, N., Schultheiss, M., Scheider, A., Mueller, M., Kohnen, T., Eckert, T., Eckardt, C., Wisniewska, M., Just, A., Jehle, V., Reinhard, T., Seewald, J., Mais, C., Basiakos, S., Osman, B., Xanthopoulou, E., Friedburg, B., Graef, M., Lorenz, B., Just, U., Naxer, S., Oterendorp, C., Bemme, S., Callizo, J., Feltgen, N., Hoerauf, H., Menges, A., Tost, F., Stahl, A., Huth, A., Viestenz, A., Bertram, P., Skevas, C., Kromer, R., Casagrande, M., Grohmann, C., Mehlan, J., Schindler, P., Spitzer, M., Schargus, M., Eddy, M., Schumacher, S., Keserue, M., Scheler, A., Stemplewitz, B., Schaudig, U., Abou Moulig, W., Framme, C., Rosenthal, A., Hesse, L., Kunz, L., Spira, C., Suffo, S., Seitz, B., Wietstock, G., Augsten, R., Meller, D., Mayer, M., Vanselow, K., Lieb, W., Beutner, A., Effert, R., Ehlken, C., Roider, J., Hueber, A., Cursiefen, K., Schrage, N., Kroeger, M., Viehweg, N., Meier, P., Unterlauft, J. D., Wiedemann, P., Hattenbach, L., Kakkassery, V., Ranjbar, M., Mohi, A., Grisanti, S., Bastron, I., Sarac, S., Kaskel-Paul, S., Stoffelns, B., Schuster, A., Pfeiffer, N., Schulze, S., Praskevas, A., Sekundo, W., Weigel, M., Thieme, H., Wolf, A., Vounotrypidis, E., Priglinger, S., Bechstein, L., Maier, M., Lohmann, C., Haritoglu, C., Alten, F., Eter, N., Klishko, V., Holland, U., Medra, A., Weber, A., Hoeh, H., Schmidbauer, J., RiveraGomez, C., Plantzas, K., Weiss, M., Hille, K., Hoehn, F., Schrader, M., Napholz, A., Tandogan, T., Walter, C., Zuehlsdorff-Uthke, M., Liekfeld, A., Blecha, C., Barth, T., Helbig, H., Juenemann, A., Decker, A., Kuehn, M., Ladewig, M., Lenhard, K., Lackner, B., Gekeler, F., Holzschuh, I., Boden, K. T., Szurmann, P., Faul, D., May-Endres, K., Press, U., Luttke, J., Ziemssen, F., Bartz-Schmidt, U., Cordes, J., Raber, F., Mikielewicz, M., Kammerer, J., Kupferschmid, S., Buchwald, H., Werner, J., Kampmeier, J., Bula, A., Krauss, P., Strzalkowski, P., Hillenkamp, J., Gabel-Pfisterer, A., Boehringer, D., Agostini, H., Fuest, M., Walter, P., Botros, Y., Mueller, A., Al-Ashi, N., Lenglinger, M., Mueller, B., Schoenfeld, S., Seibel, I., Joussen, A., Breuss, H., Kuchenbecker, J., Foerster, M. H., Berthold, A., Wirbelauer, C., Hofmayer, H., Wachtlin, J., Palka, K., Niemeyer, M., Walla, T., Pham, D., Aisenbrey, S., Tatsiou, A., Walch, A., Burk, R., Schultz, T., Tsiampalis, N., Rehmann, J., Sliwowska, U., Schojai, M., Schulze, K., Kamguia, N., Wirtz, C., Dick, B., Voelker, D., Wintergerst, M., Pfau, M., Melzer, C., Hoegen, D., Bosch, F., Andresen, J. C., Krohne, T., Holz, F., Kathke, M., Sturm, A., Noske, W., Huebner, T., Brandner, S., Feldmann, M., Morsek, J., Rainer, O., Bartsch, H., Ewald, K., Chankiewitz, E., Siegmund, T., Bohlen, A., Mohr, A., Hecker, J., Strassburger, P., Furashova, O., Engelmann, K., Krieb, A., Emmerich, K., Grajewski, L., Krause, L., Jabur, A., Ruediger, K., Lehmann, F., Sachs, H., Matthee, E., Steindorf, F., Schnitzler, C., Neumann, I., Korbmacher, J., Geerling, G., Doulgkeridis, J., Erhard, J., Dahms-Dowidat, K., Kotiasvili, T., Jagow, B. V., Lieder, A., Blum, M., Westerkemper, H., Boehm, M., Bornfeld, N., Bechrakis, N., Schultheiss, M., Scheider, A., Mueller, M., Kohnen, T., Eckert, T., Eckardt, C., Wisniewska, M., Just, A., Jehle, V., Reinhard, T., Seewald, J., Mais, C., Basiakos, S., Osman, B., Xanthopoulou, E., Friedburg, B., Graef, M., Lorenz, B., Just, U., Naxer, S., Oterendorp, C., Bemme, S., Callizo, J., Feltgen, N., Hoerauf, H., Menges, A., Tost, F., Stahl, A., Huth, A., Viestenz, A., Bertram, P., Skevas, C., Kromer, R., Casagrande, M., Grohmann, C., Mehlan, J., Schindler, P., Spitzer, M., Schargus, M., Eddy, M., Schumacher, S., Keserue, M., Scheler, A., Stemplewitz, B., Schaudig, U., Abou Moulig, W., Framme, C., Rosenthal, A., Hesse, L., Kunz, L., Spira, C., Suffo, S., Seitz, B., Wietstock, G., Augsten, R., Meller, D., Mayer, M., Vanselow, K., Lieb, W., Beutner, A., Effert, R., Ehlken, C., Roider, J., Hueber, A., Cursiefen, K., Schrage, N., Kroeger, M., Viehweg, N., Meier, P., Unterlauft, J. D., Wiedemann, P., Hattenbach, L., Kakkassery, V., Ranjbar, M., Mohi, A., Grisanti, S., Bastron, I., Sarac, S., Kaskel-Paul, S., Stoffelns, B., Schuster, A., Pfeiffer, N., Schulze, S., Praskevas, A., Sekundo, W., Weigel, M., Thieme, H., Wolf, A., Vounotrypidis, E., Priglinger, S., Bechstein, L., Maier, M., Lohmann, C., Haritoglu, C., Alten, F., Eter, N., Klishko, V., Holland, U., Medra, A., Weber, A., Hoeh, H., Schmidbauer, J., RiveraGomez, C., Plantzas, K., Weiss, M., Hille, K., Hoehn, F., Schrader, M., Napholz, A., Tandogan, T., Walter, C., Zuehlsdorff-Uthke, M., Liekfeld, A., Blecha, C., Barth, T., Helbig, H., Juenemann, A., Decker, A., Kuehn, M., Ladewig, M., Lenhard, K., Lackner, B., Gekeler, F., Holzschuh, I., Boden, K. T., Szurmann, P., Faul, D., May-Endres, K., Press, U., Luttke, J., Ziemssen, F., Bartz-Schmidt, U., Cordes, J., Raber, F., Mikielewicz, M., Kammerer, J., Kupferschmid, S., Buchwald, H., Werner, J., Kampmeier, J., Bula, A., Krauss, P., Strzalkowski, P., and Hillenkamp, J.

Abstract

Background On festive days worldwide eyes are severely injured by fireworks. The data on the number and severity are to date not registered in Germany. Objective How frequent are firework-induced injuries in Germany, who are the affected, how serious are the injuries, which forms of treatment are necessary and how frequent are accompanying injuries? Method A German nationwide online-based survey was carried out in all inpatient eye departments and data over the last 3 consecutive years were descriptively analyzed. Results From New Years Eve 2016/2017, when 41 eye departments sent in data, the participation could be increased to 51 eye departments in 2018/2019. More than one third (33-39%) of all 1356 patients over 3 years were minors, 60% were younger than 25 years old and roughly 60% of patients were injured as bystanders or in an unclear situation. In total 25% of all eye injuries were considered severe and required inpatient treatment. Accompanying injuries of the other eye, the face and hands were more frequent in minors than in adults. Eyeball ruptures were reported in 10 minors and 38 adults over the 3 years. Conclusion Particularly minors and bystanders need better protection.

Published
2019

11. IOL Eintrübungen – Aspekte zur Therapie und Procedere?

Author

Seewald, J

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Hintergrund: Visusrelevante Trübungen intraokularer Linsen in Form von Oberflächenkalzifikationen und diffusen weißen oder bräunlichen Opazifikationen können bei überwiegend hydrophilen Linsenmaterialien unterschiedlicher Linsenhersteller zu verschiedenen Zeitpunkten [zum vollständigen Text gelangen Sie über die oben angegebene URL], 26. Jahrestagung der Regionalgesellschaft der Augenärzte Sachsen-Anhalts und Thüringens

Published
2018
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13. Evidence for the role of endosymbionts in regional-scale habitat partitioning by hydrothermal vent symbioses

Author

Beinart, R. A., Sanders, J. G., Faure, Baptiste, Sylva, S. P., Lee, R. W., Becker, E. L., Gartman, A., Luther, G. W., Seewald, J. S., Fisher, C. R., and Girguis, P. R.

Subjects
endosymbiosis, chemoautotrophy, symbiosis
Abstract

Deep-sea hydrothermal vents are populated by dense communities of animals that form symbiotic associations with chemolithoautotrophic bacteria. To date, our understanding of which factors govern the distribution of host/symbiont associations (or holobionts) in nature is limited, although host physiology often is invoked. In general, the role that symbionts play in habitat utilization by vent holobionts has not been thoroughly addressed. Here we present evidence for symbiont-influenced, regional-scale niche partitioning among symbiotic gastropods (genus Alviniconcha) in the Lau Basin. We extensively surveyed Alviniconcha holobionts from four vent fields using quantitative molecular approaches, coupled to characterization of high-temperature and diffuse vent-fluid composition using gastight samplers and in situ electrochemical analyses, respectively. Phylogenetic analyses exposed cryptic host and symbiont diversity, revealing three distinct host types and three different symbiont phylotypes (one epsilon-proteobacteria and two gamma-proteobacteria) that formed specific associations with one another. Strikingly, we observed that holobionts with epsilon-proteobacterial symbionts were dominant at the northern fields, whereas holobionts with gamma-proteobacterial symbionts were dominant in the southern fields. This pattern of distribution corresponds to differences in the vent geochemistry that result from deep subsurface geological and geothermal processes. We posit that the symbionts, likely through differences in chemolithoautotrophic metabolism, influence niche utilization among these holobionts. The data presented here represent evidence linking symbiont type to habitat partitioning among the chemosynthetic symbioses at hydrothermal vents and illustrate the coupling between subsurface geothermal processes and niche availability.

Published
2012

29. Cloud condensation nucleus activity comparison of dry- and wet-generated mineral dust aerosol: the significance of soluble material.

Author

Garimella, S., Y.-w. Huang, Seewald, J. S., and Cziczo, D. J.

Abstract

This study examines the interaction of clay mineral particles and water vapor to determine the conditions required for cloud droplet formation. Droplet formation conditions are investigated for three clay minerals: illite, sodium-rich montmorillonite, and Arizona Test Dust. Using wet and dry particle generation coupled to a differential mobility analyzer (DMA) and cloud condensation nuclei counter, the critical activation of the clay mineral particles as cloud condensation nuclei is characterized. Electron microscopy (EM) is used to determine non-sphericity in particle shape. EM is also used to determine particle surface area and account for transmission of multiply charged particles by the DMA. Single particle mass spectrometry and ion chromatography are used to investigate soluble material in wet-generated samples and demonstrate that wet and dry generation yield compositionally different particles. Activation results are analyzed in the context of both κ-Köhler theory and Frenkel, Halsey, and Hill (FHH) adsorption activation theory. This study has two main results: (1) κ-Köhler is a suitable framework, less complex than FHH theory, to describe clay mineral nucleation activity despite apparent differences in κ with respect to size. For dry-generated particles the size dependence is likely an artifact of the shape of the size distribution: there is a sharp drop-off in particle concentration at ~300 nm, and a large fraction of particles classified with a mobility diameter less than ~300nm are actually multiply charged, resulting in a much lower critical supersaturation for droplet activation than expected. For wet-generated particles, deviation from κ-Köhler theory is likely a result of the dissolution and redistribution of soluble material. (2) Wet-generation is found to be unsuitable for simulating the lofting of fresh dry dust because it changes the size-dependent critical supersaturations by fractionating and re-partitioning soluble material. [ABSTRACT FROM AUTHOR]

Published
2013
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32. Active eruption seen on east Pacific rise

Author

Haymon, R. M., primary, Carbotte, S., additional, Wright, D., additional, Beedle, N., additional, Johnson, F., additional, Fornari, D. J., additional, von Damm, K., additional, Grebmeier, J., additional, Lilley, M., additional, McLaughlin, E., additional, Olson, E., additional, Edmond, J., additional, Perfit, M. R., additional, Smith, M., additional, Shanks, W.C., III, additional, Lutz, R., additional, Seewald, J., additional, Reudelhuber, D., additional, and DeVito, M. C., additional

Published
1991
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38. Composition and fate of gas and oil released to the water column during the Deepwater Horizon oil spill

Author

Reddy, C. M., Arey, J. Samuel, Seewald, J. S., Sylva, S. P., Lemkau, Karin Lydia, Nelson, R. K., Carmichael, C. A., McIntyre, C. P., Fenwick, J., Ventura, G. T., van Mooy, B. A. S., and Camilli, R.

Subjects
Gulf of Mexico, subsurface plumes
Abstract

Quantitative information regarding the endmember composition of the gas and oil that flowed from the Macondo well during the Deepwater Horizon oil spill is essential for determining the oil flow rate, total oil volume released, and trajectories and fates of hydrocarbon components in the marine environment. Using isobaric gas-tight samplers, we collected discrete samples directly above the Macondo well on June 21, 2010, and analyzed the gas and oil. We found that the fluids flowing from the Macondo well had a gas-to-oil ratio of 1,600 standard cubic feet per petroleum barrel. Based on the measured endmember gas-to-oil ratio and the Federally estimated net liquid oil release of 4.1 million barrels, the total amount of C-1-C-5 hydrocarbons released to the water column was 1.7 x 10(11) g. The endmember gas and oil compositions then enabled us to study the fractionation of petroleum hydrocarbons in discrete water samples collected in June 2010 within a southwest trending hydrocarbon-enriched plume of neutrally buoyant water at a water depth of 1,100 m. The most abundant petroleum hydrocarbons larger than C-1-C-5 were benzene, toluene, ethylbenzene, and total xylenes at concentrations up to 78 mu gL(-1). Comparison of the endmember gas and oil composition with the composition of water column samples showed that the plume was preferentially enriched with water-soluble components, indicating that aqueous dissolution played a major role in plume formation, whereas the fates of relatively insoluble petroleum components were initially controlled by other processes.

42. Pandemiebedingtes Verkaufsverbot von Feuerwerkskörpern in Deutschland führt zu einer deutlichen Abnahme der Augenverletzungen

Author

Gabel-Pfisterer, Ameli, Böhringer, Daniel, Agostini, Hansjürgen, Feuerwerks-Verletzungen-Studiengruppe, Botros, Y., Krieb, A., Emmerich, K.-H., Grajewski, L., Krause, L., Hoa, D. Q., Yilmaz, S., Jabur, A., Rüdiger, K., Boeker, T., Rashitova, D., Eberlein, G., Lehmann, F., Sachs, H., Matthee, E., Pillunat, L., Juergens, L., Kaya, S., Guthoff, R., Steindorf, F., Korbmacher, J., Geerling, G., Märtz, J., Widder, R., Rössler, G., Iseed, A., Doulgkeridis, J., Erhard, J., Tomalla, M., von Jagow, B., Filev, F., Schill, S., Kotiasvili, T., Kojetinski, C., Flach, A., Zollfrank, C., Lieder, A., Blum, M., Tourtas, T., Knorr, H., Kruse, F., Freimuth, M., Dalbah, S., Sokolenko, E., Mueller, A., Rating, P., Kiefer, T., Book, B., Westerkemper, H., Böhm, M., Bornfeld, N., Bechrakis, N., Schultheiss, M., Scheider, A., Pawlowczicz, K., Hagenbusch, J., Müller, M., Kohnen, T., Ahdab, K., Eckert, T., Eckardt, C., Wisniewska, M., Just, A., Laich, Y., Stifter, J., Avar, M., Gritzka, M., Jehle, V., Reinhard, T., Rab, S., Seewald, J., Mais, C., Basiakos, S., Osman, B., Xanthopoulou, E., Friedburg, B., Graef, M. H., Dempe, C., Lorenz, B., Just, U., Schrecker, J., Klemming, J., Drüke, D., Bemmer, L., Weiß, S., Take, P., Nguyen-Höhl, A., Oterendorp, C., Al-Ashi, N., Feltgen, N., Hoerauf, H., Prusiecki, I., Elle, J., Gundel, B., Bender, M. C., Menges, A., Tost, F., Stahl, A., Wienrich, R., Breuß, H., Huth, A., Viestenz, A., Ueberschaar, J., Daehn, T., Brooks, U., Schindler, P., Bigdon, E., Bertram, P., Skevas, C., Kromer, R., Kuchenbecker, J., Casagrande, M., Grohmann, C., Mehlan, J., Spitzer, M., Schargus, M., Eddy, M., Schumacher, S., Keserü, M., Scheler, A., Foerster, M. H., Stemplewitz, B., Schaudig, U., Herden, J., Haar, M., Tode, B., Junker, B., Abou Mouli, W., Volkmann, I., Framme, C., Scheuerle, A., Seibel, I., Auerbach, M., Beisse, C., Rohrschneider, K., Auffahrt, G., Mala, N., Rosenthal, A., Hesse, L., Daas, L., Flockerzie, E., Suffo, S., Böker, A., Seitz, B., Chrisoglou, N., Wietstock, G., Augsten, R., Meller, D., Althauspetervari, I., Rudolph, O., Floeter, C., Beutner, A., Effert, R., Greve, D., Mayer, M., Vanselow, K., Lieb, W., Kandzia, C., Purtskhvanidze, K., Ehlken, C., Roider, J., Hueber, A., Cursiefen, K., Edelmann, C., Lenglinger, M., Schrage, N., Kroeger, M., Viehweg, N., Meier, P., Unterlauft, J. D., Wiedemann, P., Rehak, M., Ziemssen, F., Rommel, F., Sonntag, S., Müller, B., Prasuhn, M., Pawlik, V., Kakkassery, V., Ranjbar, M., Mohi, A., Grisanti, S., Bastron, I., Dindin-Sarac, S., Kaskel-Paul, S., Rawohl, J., Schönfeld, S., Hattenbach, L., Stoffelns, B., Schuster, A., Pfeiffer, N., Besgen, V., Schröder, F., Schulze, S., Weber, N., Sekundo, W., Schuart, C., Renieri, G., Weigel, M., Thieme, H., Hagenau, F., Wolf, A., Vounotrypidis, E., Priglinger, S., Penkava, J., Klein, J., Bechstein, L., Joussen, A., Maier, M., Lohmann, C., Haritoglu, C., Alten, F., Eter, N., Brinkmann, C., Alshikh, F., Klishko, V., Holland, U., Medra, A., Kolarov, D., Weber, A., Höh, H., Pielen, A., Zschockelt, T., Luciani, F., Schmidbauer, J., Horn, P., Kodomskoi, L., Kuempel, H., Schwarz, P., Rivera Gomez, C., Plantzas, K., Weiss, M., Hille, K., Esper, G., Mazko, K., Kolbeck, L., Malek, S., Kupper, P., Grafmueller, S., Puk, C., Schrader, S., Darawsha, R., Bellios, N., Wulff, V., Ghaffary, A., Ghoreishi, A., Höhn, F., Napholz, A., Tandogan, T., Schmidt, L., Berthold, A., Ilski, P., Trossowski, C., Zühlsdorff-Utke, M., Liekfeld, A., Winter, I., Böhm, A., Blecha, C., Barth, T., Helbig, H., Rusch, W., Wirbelauer, C., Noerenberg, A., Juenemann, A., Fuchsluger, T. A., Matar, C., Zuche, M., Roehrig, S., Decker, A., Kühn, M., Ladewig, M., Schmidt-Wetter, J., Hofmayer, H., Machulla, R., Boateng, A.-F., Dias Blak, M., Krawczyk, S., Lenhard, K., Lackner, B., Gekeler, F., Mamacek, D., Wocker, L., Holzschuh, I., Wachtlin, J., Boden, K. T., Szurmann, P., Faul, D., May-Endres, K., Press, U., Luttke, J., Wolfram, L., Reichel, F., Seitz, I., Bartz-Schmidt, U., Speidel, A., Cordes, J., Raber, F., Mikielewicz, M., Kammerer, J., Kupferschmid, S., Buchwald, H., Werner, J., Meyer, J. F., Kampmeier, J., Dithmar, S., Fischer, G., Pruefke, C., Bula, A., Krauß, P., Strzalkowski, P., Hillenkamp, J., Macher, T., Kuerten, D., Palka, K., Niemeyer, M., Walla, T., Pham, D., Aisenbrey, S., Rieck, P., Verbeck, J., Tatsiou, A., Walch, A., Burk, R., Fuest, M., Schnober, G., Elling, M., Schultz, T., Tsiampalis, N., Rehmann, J., Sliwowska, U., Schojai, M., Schulze, K., Kamguia, N., Wirtz, C., Walter, P., Dick, B., Bourauel, L., Schützeichel, F. M., Völcker, D., Wintergerst, M., Pfau, M., Melzer, C., Hoegen, D., Bosch, F., Andresen, J. C., Wanjek-Meyer, K., Krohne, T., Holz, F. G., Fries, U., Koch, M., Kwasnicki, A., Kathke, M., Noske, W., Sturm, A., Chankiewitz, E., Monastoriotis, S., Kohen, L., Kemper, O., Hübner, T., Feldmann, M., Morsek, J., Rainer, O., Bartsch, H., Ewald, K., Brandter, S., Cil, M. U., Hartmann, K., Siegmund, T., Bohlen, A., Mohr, A., Wienigk, A., Hecker, J., Smetana, P., Furashova, O., Engelmann, K., Shtaya, M., and Müller, A.-K.

Abstract

Die Ophthalmologie 119(12), 1257-1266 (2022). doi:10.1007/s00347-022-01778-1, Published by Springer Medizin, Berlin ; Heidelberg

Published
2022

43. Subseafloor microbial communities in hydrogen-rich vent fluids from hydrothermal systems along the Mid-Cayman Rise.

Author

Reveillaud J, Reddington E, McDermott J, Algar C, Meyer JL, Sylva S, Seewald J, German CR, and Huber JA

Subjects
Animals, Biodiversity, Hydrothermal Vents chemistry, Hydrogen analysis, Hydrothermal Vents microbiology
Abstract

Warm fluids emanating from hydrothermal vents can be used as windows into the rocky subseafloor habitat and its resident microbial community. Two new vent systems on the Mid-Cayman Rise each exhibits novel geologic settings and distinctively hydrogen-rich vent fluid compositions. We have determined and compared the chemistry, potential energy yielding reactions, abundance, community composition, diversity, and function of microbes in venting fluids from both sites: Piccard, the world's deepest vent site, hosted in mafic rocks; and Von Damm, an adjacent, ultramafic-influenced system. Von Damm hosted a wider diversity of lineages and metabolisms in comparison to Piccard, consistent with thermodynamic models that predict more numerous energy sources at ultramafic systems. There was little overlap in the phylotypes found at each site, although similar and dominant hydrogen-utilizing genera were present at both. Despite the differences in community structure, depth, geology, and fluid chemistry, energetic modelling and metagenomic analysis indicate near functional equivalence between Von Damm and Piccard, likely driven by the high hydrogen concentrations and elevated temperatures at both sites. Results are compared with hydrothermal sites worldwide to provide a global perspective on the distinctiveness of these newly discovered sites and the interplay among rocks, fluid composition and life in the subseafloor., (© 2015 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd.)

Published
2016
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