ingest cdrApp 2018-06-13T18:19:54.605Z 51cd2fe2-3fd7-401f-a923-a97bc3db68a2 modifyDatastreamByValue RELS-EXT fedoraAdmin 2018-06-13T19:17:26.942Z Setting exclusive relation addDatastream MD_TECHNICAL fedoraAdmin 2018-06-13T19:17:38.136Z Adding technical metadata derived by FITS addDatastream MD_FULL_TEXT fedoraAdmin 2018-06-13T19:18:00.416Z Adding full text metadata extracted by Apache Tika modifyDatastreamByValue RELS-EXT fedoraAdmin 2018-06-13T19:18:23.058Z Setting exclusive relation modifyDatastreamByValue MD_DESCRIPTIVE cdrApp 2018-07-11T16:32:32.686Z modifyDatastreamByValue MD_DESCRIPTIVE cdrApp 2018-08-21T20:52:27.565Z modifyDatastreamByValue MD_DESCRIPTIVE cdrApp 2018-09-27T22:15:46.261Z modifyDatastreamByValue MD_DESCRIPTIVE cdrApp 2018-10-12T12:11:14.925Z modifyDatastreamByValue MD_DESCRIPTIVE cdrApp 2018-10-17T17:30:14.673Z modifyDatastreamByValue MD_DESCRIPTIVE cdrApp 2019-03-22T15:20:10.550Z Andrew Hyde Author Department of Marine Sciences College of Arts and Sciences MICROBIAL STRATIFICATION AND INFERRED MICROBIALLY CATALYZED PROCESSES ALONG A DEEP-SEA HYPERSALINE CHEMOCLINE The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments Spring 2018 2018 Biogeochemistry Microbiology Environmental microbiology, Hypersaline, Marine microbiology, Sulfur metabolism eng Master of Science Thesis University of North Carolina at Chapel Hill Graduate School Degree granting institution Marine Sciences Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text Andrew Hyde Author Department of Marine Sciences College of Arts and Sciences MICROBIAL STRATIFICATION AND INFERRED MICROBIALLY CATALYZED PROCESSES ALONG A DEEP-SEA HYPERSALINE CHEMOCLINE The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments Spring 2018 2018 Biogeochemistry Microbiology Environmental microbiology, Hypersaline, Marine microbiology, Sulfur metabolism eng Master of Science Thesis University of North Carolina at Chapel Hill Graduate School Degree granting institution Marine Sciences Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text Andrew Hyde Author Department of Marine Sciences College of Arts and Sciences MICROBIAL STRATIFICATION AND INFERRED MICROBIALLY CATALYZED PROCESSES ALONG A DEEP-SEA HYPERSALINE CHEMOCLINE The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments Spring 2018 2018 Biogeochemistry Microbiology Environmental microbiology, Hypersaline, Marine microbiology, Sulfur metabolism eng Master of Science Thesis Marine Sciences Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text University of North Carolina at Chapel Hill Degree granting institution Andrew Hyde Creator Department of Marine Sciences College of Arts and Sciences MICROBIAL STRATIFICATION AND INFERRED MICROBIALLY CATALYZED PROCESSES ALONG A DEEP-SEA HYPERSALINE CHEMOCLINE The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments Biogeochemistry Microbiology Environmental microbiology; Hypersaline; Marine microbiology; Sulfur metabolism eng Master of Science Masters Thesis Marine Sciences Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text University of North Carolina at Chapel Hill Degree granting institution 2018 2018-05 Andrew Hyde Author Department of Marine Sciences College of Arts and Sciences MICROBIAL STRATIFICATION AND INFERRED MICROBIALLY CATALYZED PROCESSES ALONG A DEEP-SEA HYPERSALINE CHEMOCLINE The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments Spring 2018 2018 Biogeochemistry Microbiology Environmental microbiology, Hypersaline, Marine microbiology, Sulfur metabolism eng Master of Science Thesis University of North Carolina at Chapel Hill Graduate School Degree granting institution Marine Sciences Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text Andrew Hyde Author Department of Marine Sciences College of Arts and Sciences MICROBIAL STRATIFICATION AND INFERRED MICROBIALLY CATALYZED PROCESSES ALONG A DEEP-SEA HYPERSALINE CHEMOCLINE The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments Spring 2018 2018 Biogeochemistry Microbiology Environmental microbiology, Hypersaline, Marine microbiology, Sulfur metabolism eng Master of Science Thesis Marine Sciences Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text University of North Carolina at Chapel Hill Degree granting institution Andrew Hyde Creator Department of Marine Sciences College of Arts and Sciences The Gulf of Mexico contains the world’s largest anoxic hypersaline seafloor basin, Orca Basin. The water contained in this 400 km2 bathymetric depression is roughly eight times as saline as the overlying seawater. The resulting density contrast prevents the 200 m deep brine layer from mixing with seawater, creating an interface that traps particles of organic matter falling through the water column. The concentrated organic matter at the interface is hypothesized to host a thriving bacterial community that has yet to be characterized. Here, I present the results of the first bacterial community analysis by high-throughput sequencing ever conducted on the interface and brine pool of Orca Basin. I discuss how the bacterial community changes along a 550 m vertical transect with regards to oxygen, salinity, and organic matter gradients. Finally, a comparison of the geochemical and bacterial composition of Orca Basin to brine pools in the Mediterranean and Red Seas reveals the uniqueness of Orca Basin in a global context. This research adds to our current knowledge of biodiversity in global hypersaline habitats and has implications for our understanding of sulfur and carbon cycling in extreme environments 2018-05 2018 Biogeochemistry Microbiology Environmental microbiology; Hypersaline; Marine microbiology; Sulfur metabolism eng Master of Science Masters Thesis Andreas Teske Thesis advisor Andreas Teske Thesis advisor Carol Arnosti Thesis advisor Marc Alperin Thesis advisor text University of North Carolina at Chapel Hill Degree granting institution Hyde_unc_0153M_17811.pdf uuid:c325ceff-1961-4c02-b664-78d94f518c92 2020-06-13T00:00:00 2018-05-01T22:38:38Z proquest application/pdf 1755963