38 resultados para high-index InP substrate

em University of Michigan


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This study documents marine ecological conditions at Rincon Island, located approximately 0.8 kilometer offshore between Ventura and Santa Barbara, California, in a depth of 14 meters. The island, which was constructed between 1957 and 1958 to serve as a permanent platform for oil and gas production, is particularly suitable for ecological study. Habitat features associated with the armor rock and concrete tetrapods surrounding the island support a 'microecosystem' which differs in biotic composition from surrounding natural bottom areas. A major part of the study was devoted to analysis of seasonal dynamics in biotic composition. Permanent transects extending from the high intertidal to natural bottom were established normal to each of the four cardinal sides of the island. All macrobiota were censused in duplicate 1-square meter quadrats along each transect during each of the four seasons. Data analysis indicated that many species exhibit significant variability in abundance from one season to the next. In general, the findings indicate a rich and varied fauna and flora associated with the high-relief solid substrate of Rincon Island which differs substantially from the more depauperate natural bottom habitats in the area.

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Mode of access: Internet.

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Includes index.

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Manuscript index (4 p.) signed: William Greig, appended to L. C. copy.

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Instaurationis magnae, pars V. Opuscula philosophica. Descriptio globi intellectualis. Opera civilia et moralia. Historia regni Henri Septimi.--v.10 Sermones fideles, sive Interiora rerum. De sapientia veterum. Meditationes sacrae. Epistolae. Index rerum in v. 7, 8, 8, et 10. Index to English part, comprised in the six first volumes.