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| Little, Crispin T. S.; Johannessen, Karen C; Bengtson, Stefan; Chan, Clara S; Ivarsson, Magnus; Slack, John F; Broman, Curt; Thorseth, Ingunn H.; Grenne, Tor; Rouxel, Olivier; Bekker, Andrey. |
| Modern marine hydrothermal vents occur in a wide variety of tectonic settings and are characterized by seafloor emission of fluids rich in dissolved chemicals and rapid mineral precipitation. Some hydrothermal systems vent only low‐temperature Fe‐rich fluids, which precipitate deposits dominated by iron oxyhydroxides, in places together with Mn‐oxyhydroxides and amorphous silica. While a proportion of this mineralization is abiogenic, most is the result of the metabolic activities of benthic, Fe‐oxidizing bacteria (FeOB), principally belonging to the Zetaproteobacteria. These micro‐organisms secrete micrometer‐scale stalks, sheaths, and tubes with a variety of morphologies, composed largely of ferrihydrite that act as sacrificial structures, preventing... |
| Tipo: Text |
Palavras-chave: Arizona; Fe-oxidizing bacteria; Hydrothermal vents; Jasper; Late Paleoproterozoic; Verde mining district. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00680/79162/81674.pdf |
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| Tranel, Jeffrey E.; Hewlett, John P.; Weigel, Randolph R.; Rahman, Tauhidur; Teegerstrom, Trent; Ehmke, Cole. |
| This report presents the preliminary results of a statistically valid 2006 survey of small agricultural producers (sales of less than $50,000) in three Western states (Wyoming, Colorado and Arizona). The West has undergone significant change, and the composition of farm managers has changed with it. This report provides information from farm operators in the rural West on their perceived threats as well as characteristics of themselves and their operations. Topics of interest were demographics, reasons for involvement in agriculture, income, resource management (crops and livestock), and preferences for information delivery. The project was supported by the Western Center for Risk Management Education. |
| Tipo: Report |
Palavras-chave: Small farm; Extension; West; Arizona; Colorado; Wyoming; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Labor and Human Capital; Land Economics/Use; Livestock Production/Industries; Teaching/Communication/Extension/Profession. |
| Ano: 2008 |
URL: http://purl.umn.edu/37721 |
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| Cutts, Bethany B. ; School of Life Sciences, Arizona State University; Decision Center for a Desert City, Arizona State University; bcutts@asu.edu; Larson, Elisabeth K. ; School of Life Sciences, Arizona State University; eklarson@asu.edu; Darby, Kate J.; School of Human Evolution and Social Change, Arizona State University; Kate.Darby@asu.edu; Neff, Mark; Consortium for Science, Policy and Outcomes, Arizona State University ; Mark.Neff@asu.edu; Wutich, Amber; School of Human Evolution and Social Change, Arizona State University; Amber.Wutich@asu.edu; Bolin, Bob; School of Human Evolution and Social Change, Arizona State University; Bob.Bolin@asu.edu. |
| The need to develop successful collaborative strategies is an enduring problem in sustainable resource management. Our goal is to evaluate the relationship between information networks and conflict in the context of collaborative groundwater management in the rapidly growing central highland region of Arizona. In this region, water-management conflicts have emerged because of stakeholders’ differing geographic perspectives and competing scientific claims. Using social network analyses, we explored the extent to which the Verde River Basin Partnership (VRBP), which was charged with developing and sharing scientific information, has contributed to collaboration in the region. To accomplish this, we examined the role that this stakeholder... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Arizona; Boundary spanning; Collaborative management; Environmental governance; Information networks; Power; Water management. |
| Ano: 2010 |
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