Phosphorus dynamics in waters of the Pacific Ocean

Tagged phosphorus was used to measure principal indices of mineral phosphorus variations in the euphotic zone of the East Pacific, i.e. total rate of uptake of phosphate phosphorus by microplankton (A_t), fraction consumed by phytoplankton (A_p/A_t), and turnover time (T). A_t reached its greatest values (150-280 ng/l/hour) in the upwelling zone of the Peru traverse, where development of phytoplankton was induced by upwelling. In other areas of this traverse values were 40-80 ng/l/hour in surface layers. In less productive waters on two other profiles (off Central America and California), values were lower, between 20 and 40 ng/l. On the vertical profile maxima of A_t were found at the upper boundary of the thermocline. Turnover time of PO4 phosphorus (T) in zones of phytoplankton abundance was very short, between 1.5 and 4 days. At most other stations it was 10-40 days, increasing to 100-200 days or longer at the lower boundary of the euphotic zone. In areas of phytoplankton abundance it accounted for 60-80% of total uptake of PO4 phosphorus. But in zones of elevated bacterial abundance, A_p/A_t fell to 20-40%. Data indicating lack of correlation between PO4 phosphorus and productivity are presented. It is emphasized that the above measures of PO4 phosphorus dynamics can be used for obtaining measures of functional condition and successional phase of marine plankton communities.

(Fig 1, page 350) A manganese nodule in the top part of the CHUBASCO station 17 core taken in the Pacific Ocean

The vast extent of pelagic deposits, covering about 70 per cent of the ocean floor, thus about half of the earth, makes them of obvious importance to all Earth Science. All the pelagic (eupelagic) sediments, whether largely of plankton remains or fine inorganic particles, have certain distinctive characteristics to reflect their environment of accumulation. The great segregation of manganese in pelagic sediments presents many problems. It is hypothesized that in the formation of present day nodules a relatively slow accumulation in order to permit deposition of more of the manganese as large nodules, rather than as the disseminated micronodules that are in larger proportion in the Tertiary.

The Pacific railroads : the rights of the people ignored.

"March 31, 1874"--Page 8.

Secretary of the Interior on the Pacific railroads; extract from annual report. Second session, forty-fifth Congress, December 3, 1877.

With: Acts of Congress relating to the Union Pacific railroad and branches. Washington : J.L. Pearson, Printer, 1877. Bound together subsequent to publication.

Guide to the birds of Samoa.

Bibliography: leaf 21.

Arbitration between Peru and Chile. The case of Peru in the matter of the controversy arising out of the question of the Pacific, before the President of the United States of America, arbitrator, under the protocol and supplementary act between the Republic of Chile, signed July 20, 1922, at Washington, D.C., ratified January 15, 1923.

Includes documents in Spanish and English.

Arbitration between Peru and Chile. The counter case of Peru in the matter of the controversy arising out of the question of the Pacific, before the President of the United States of America, arbitrator, under the protocol and supplementary act between the Republic of Peru and the Republic of Chile, signed July 20, 1922 at Washington, D.C. ratified January 15, 1923.

Binder's title: Peruvian-Chilean arbitration. Appendix to the counter case of Peru.

Proposed plan for managing the 1980 salmon fisheries off the coast of California, Oregon, and Washington : [final] : an amendment to the "Fishery management plan for commercial and recreational salmon fisheries off the coast of Washington, Oregon, and California commencing in 1978" /

Mode of access: Internet.

Journeys to Bagdad,

Journeys to Bagdad.--The worst edition of Shakespeare.--The decline of night-caps.--Maps and rabbit-holes.--Tunes for spring.--Respectfully submitted--to a mournful air.--The chilly presence of hard-headed persons.--Hoopskirts and other lively matter.--On traveling.--Through the scuttle with the tinman.

List of entomologists of the Pacific area.

Kept up to date by supplements.

The U.S. Naval Astronomical Expedition to the southern hemisphere, during the years 1849-'50-'51-'52 /

Vols. 4 and 5, designed to contain the results of the astronomical observations, were not published. The material was published later by the U.S. Naval observatory in its Astronomical and meteorological observations. (Washington observations) for 1868, app. I, 1871, and Astronomical, magnetic and meteorological observations (Washington observations) for 1890, app. I, 1895.

How to protect plants. A guide to the control of pests and diseases of plants in Hawaii.

Mode of access: Internet.

To the people of the United States.

U.S. Congress. House. Committee on Roads and Canals. Railroad to Oregon. Report. (20th Cong., 2d sess. House. Rep. 198): p. 11-12.

The Oregonian's handbook of the Pacific Northwest.

"The data for these articles ... [were] gathered by the Oregonian through personal visits of its representatives to the different parts of this territory."--p. 3.