721 resultados para Ordination
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The organic walled cyst content of 41 surface sediment samples from the south-eastern South Atlantic Ocean have been studied to create a dataset that can be used for palaeoceanographic reconstructions. In order to obtain insight into which environmental factors influence the distribution of individual cyst species, the cyst associations have been compared with oceanographic characteristics of the overlying water masses, i.e. temperature, salinity, density and stratification gradients. The associations and relationships have been established by visual examination of the dataset and the multivariate ordination techniques, Detrended Correspondence Analysis and Canonical Correspondence Analysis. Special attention has been given to the factors of transport and preservation of the cysts. Five associations have been recognised as being characteristic of (1) areas influenced by coastal upwelling and/or river outflow, (2) open ocean, (3) Agulhas Current and southern Benguela Current, (4) Benguela Current and (5) Walvis Bay, shelf break area. The factors dominant in influencing either directly or indirectly the cyst distributions appear to be the stratification in the upper 50 m of the water column, nutrient concentration and seasonality. Variations in sea surface temperatures and salinities have only minor effect on cyst distribution.
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Includes bibliographical references.
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"Prepared for the Committee for Co-ordination of Investigations of the Lower Mekong Basin (Cambodia, Laos, Thailand, Republic of Vietnam) under agreement with the Agency for International Development, United States Department of State by Bureau of Reclamation, United States Department of the Interior"--Cover.
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Title of Dudleian lecture: Ordination by elders vindicated.
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Published in 1918, in one volume, under title: Readings in industrial society.
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Vol. 7, made up of extracts from scientific serials, has no general title.
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Mode of access: Internet.
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Mode of access: Internet.
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Includes a history of the West Church (p. [17]-20).
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Mode of access: Internet.
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Mode of access: Internet.
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Signatures: a⁸, A-X⁸ Y⁶
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Buff printed paper cover.
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Mode of access: Internet.
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"Contains all the printed papers which display the religious principles of the Associate Presbytery of Pennsylvania." -- Pref. signed: William Marshall.