Shipwrecks act as artificial reefs and provide a solid surface in aquatic systems for many different forms of life to attach to, especially microbial communities, making them a hotspot of biogeochemical cycling. Depending on the microbial community and surrounding environment, they may either contribute to the wreck's preservation or deterioration. Even within a single wreck, preservation and deterioration processes may vary, suggesting that the microbial community may also vary. This study aimed to identify the differences through widespread sampling of the microbial communities associated with the Pappy Lane shipwreck (NC shipwreck site #PAS0001), a shallow water ferrous-hulled shipwreck in Pamlico Sound, North Carolina to determine if there are differences across the wreck as well as from its surrounding environment. Loose shipwreck debris, drilled shipcores, surrounding sediment, and seawater samples were collected from the Pappy Lane shipwreck to characterize the microbial communities on and around the shipwreck. Results indicated that the shipwreck samples were more similar to each other than the surrounding sediment and aquatic environments suggesting they have made a specialized niche associated with the shipwreck. There were differences between the microbial community across the shipwreck, including between visibly corroded and non-corroded shipwreck debris pieces. Relative abundance estimates for neutrophilic iron-oxidizing bacteria (FeOB), an organism that may contribute to deterioration through biocorrosion, revealed they are present across the shipwreck and at highest abundance on the samples containing visible corrosion products. Zetaproteobacteria, a known class of marine iron-oxidizers, were also found in higher abundance on shipwreck samples with visible corrosion. A novel Zetaproteobacteria strain, Mariprofundus ferrooxydans O1, was isolated from one of the shipwreck pieces and its genome analyzed to elucidate the functional potential of the organism. In addition to iron oxidation pathways, the isolate has the genomic potential to perform carbon fixation in both high and low oxygen environments, as well as perform nitrogen fixation, contributing to the overall biogeochemical cycling of nutrients and metals in the shipwreck ecosystem. By understanding the microbial communities associated with shallow water ferrous-hulled shipwrecks, better management strategies and preservation plans can be put into place to preserve these artificial reefs and non-renewable cultural resources.
From 1996 investigators of the Beaufort Inlet shipwreck, off North Carolina, USA, have suggested that the remains are those of the Queen Anne's Revenge, flagship of the pirate Blackbeard. Analysis of the published material, however, indicates that no concrete evidence has yet been found to support this identification and, moreover, shows a strong tendency towards Ruling Theory, whereby researchers seem to shape evidence to fit a pre‐conceived identification. This article uses the Beaufort Inlet shipwreck as a case study in the dangers of Ruling Theory and how it can compromise scholarly objectivity, and thwart the generation of useful research questions. It also seeks to demonstrate the benefits of a clear, objective research design for project investigation and management. © 2005 The Nautical Archaeology Society
Ship abandonment relates to the transfer of vessel possession and is at the core of marine insurance classification. This article explores the theme of ship abandonment in two sections—classification of abandonment activities and behaviors, and the history of ship abandonment studies by maritime historians and archaeologists. The history of ship abandonment is presented in the form of case studies in this article. Ship graveyards contain a high concentration of wrecked vessels and are also called ship traps. There are two types of ship graveyards, the first, where vessels are deliberately abandoned in situations like war, and the second, where unwanted vessels are dumped. Ship abandonment is a cycle of abandonment of one function for the adoption of another. These changes involve structural and functional transformations. This article emphasizes the fact that ships are objects abounding with the qualities of particular cultures, as well as the maritimity of culture.
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