Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Oxygen deficient zone"”.
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The impact of metals and other stress factors on microbial ammonia oxidation physiology and isotope effects
… mechanism is unknown, although links to reactive oxygen species (ROS) cycling seem likely. We present detailed investigations of three environmentally relevant AOO stress factors: metal micronutrient limitation, pH changes, and ROS. Central to these studies were analyses of stable isotope …
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The Marine Cyanate Cycle
… tropical South Pacific (ETSP) including the Oxygen Deficient Zone. Cyanate concentrations ranged from below the limit of detection (0.4 nM) to 65 nM in natural samples examined to date. Cyanate was produced photochemically and in senescent diatom cultures, but cyanate was not detectable in …
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Nitrogen cycling in oxygen deficient zones : insights from [delta]¹⁵N and [delta]¹⁸O of nitrite and nitrate
… distinguish. Examples of such regions are "oxygen deficient zones" (ODZ). They are of particular interest because they are also important hot spots of fixed N loss and production of N₂O, a potent greenhouse gas. In order to interpret these isotope profiles, the isotope systematics of each …
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In the Margins: Reconsidering the Range and Contribution of Diazotrophs in Nearshore Environments
… gradients (e.g., light, nutrients, oxygen) in nearshore environments of significance in global biogeochemical cycling: the major pelagic oxygen deficient zones (ODZs) in the Eastern Tropical South (ETSP) and North (ETNP) Pacific Ocean, and the broad continental shelf of the Western …