http://hdl.handle.net/10125/857 Fri, 24 May 2013 06:03:00 GMT 2013-05-24T06:03:00Z http://hdl.handle.net/10125/913 A new surface sediment distribution map of the southeast Pacific Ocean has been compiled from approximately 800 existing samples. Ridge sediments are characterized by calcareous ooze; deep ocean basin sediments by clay; trench sediments by mud; and continental margin sediments by mud or material of sand size or larger. Siliceous oozes are generally absent largely because of dilution by calcareous material near the equator and terrigenous material near the continent, and because of dissolution in the water column and on the sea floor. Some sediments on the East Pacific Rise and in the Bauer Depression are markedly enriched in iron and manganese, whereas, in other areas, concentrations of transition metals are confined to nodules. Organic carbon values in bottom sediments bear a direct relationship to the productivity of the overlying surface waters, and range up to 6.9 percent in a strongly upwelling area. Pyroclastic material is more widespread off Peru than Chile. This may be due to easterly upper trophosphere winds over Peru and westerly upper trophosphere winds over Chile. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/913 1975-01-01T00:00:00Z Rosato, Victor J; Kulm, LD; Derks, P Steve http://hdl.handle.net/10125/912 Populations of foraminifera were investigated in regard to the suitability of the various species as indicators of sand transport. Of 53 species recorded in the sediments of Kahana Bay, Oahu, 16 showed distribution patterns that give evidence of the direction of sand transport within the littoral cell. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/912 1975-01-01T00:00:00Z Coulbourn, William T; Resig, Johanna M http://hdl.handle.net/10125/911 In the alpine flora of New Guinea the Boraginaceae occupy a small place with only three genera, Cynoglossum, Myosotis, and Trigonotis, and a problematical fourth one, Crucicaryum, being reported. In the present treatment descriptions of genera and species are given with localities, collectors, and ecological notes. The genus Trigonotis is given in its entity, including all species in New Guinea outside the alpine region. Two new species, T. culminicola and T. vestita, are described. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/911 1975-01-01T00:00:00Z van Royen, P http://hdl.handle.net/10125/910 Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/910 1975-01-01T00:00:00Z St. John, Harold http://hdl.handle.net/10125/909 Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/909 1975-01-01T00:00:00Z Berger, Andrew J http://hdl.handle.net/10125/908 Bufo marinus was introduced into the New Guinea region in the late 1930s. Its present distribution in Papua New Guinea is mapped. In the Port Moresby area, the population of Bufo marinus is capable of reproduction at any time of the year. Sampling at a rain forest and a savanna site near Port Moresby showed that the density of savanna toads is 10 times that of rain forest toads but that the rain forest toads are longer and heavier. This size difference probably results from the greater amounts of food and a larger proportion of proteinaceous food in the stomachs of rain forest toads. No native frogs appear to have been displaced by the successful invasion of the toad. Similarly, no native animals have become apparent toad predators. The literature on Bufo marinus ecology is summarized. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/908 1975-01-01T00:00:00Z Zug, George R; Lindgren, Eric; Pippet, John R http://hdl.handle.net/10125/907 Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/907 1975-01-01T00:00:00Z Robison, Bruce H http://hdl.handle.net/10125/903 Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/903 1975-01-01T00:00:00Z http://hdl.handle.net/10125/905 Bottom temperature and the condition of live corals in the vicinity of the discharge plume from the Hawaiian Electric Company Kahe Generating Station, Oahu, Hawaii, were monitored August-December 1973. Mortality to Pocillopora meandrina, the most thermally sensitive species of the area, was no greater under conditions of maximum thermal enrichment near the living reef fringe in the discharge area (1-2 m depth) than in an area (4-5 m depth) more distant from the discharge. Sublethal coral damage was more pronounced near the discharge, but was mostly limited to loss of zooxanthellar pigment which was restored following yearly ambient temperature maxima. Although bottom temperatures in the discharge area continually varied 30-40 C within minute periods during every low tide, live corals seldom encountered temperatures exceeding 31 0 C. The limited damage that occurred to live corals indicates that upper absolute temperatures are more critical in producing coral damage than are short-term temperature shocks near upper lethal limits. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/905 1975-01-01T00:00:00Z Coles, Stephen L http://hdl.handle.net/10125/906 Leachia pacifica reaches about 80 percent of its maximum length in near-surface waters off Hawaii, then abruptly descends to depths greater than 1,000 meters where maturation and mating occur. At these latter depths, large photophores develop on the tips of the third arms in females. The photophores provide a possible means for sexual attraction. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/906 1975-01-01T00:00:00Z Young, Richard E http://hdl.handle.net/10125/904 A red tide near Lae in the Morobe District of Papua New Guinea is described. The causative dinoflagellate, Pyrodinium bahamense Plate, is known to produce paralytic shellfish poisoning. Its characteristics are extensive orangebrown discolorations of seawater by day, luminescence at night, and mortality to a wide variety of marine life, including dolphins, turtles, fish, and bivalve mollusks. An analysis of plankton samples taken in the area is given. Bivalve shellfish proved highly toxic, but no toxin was detected in dead and live fish from water visibly discolored by red tide. Comparisons are made with observations of a previous red tide in the Central District near Port Moresby. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/904 1975-01-01T00:00:00Z Maclean, JL http://hdl.handle.net/10125/858 Outbreaks of paralytic shellfish poisoning and simultaneous red tides (Pyrodinium bahamense Plate) in the Port Moresby district during 1972 are recorded. Bioassays of various bivalve shellfish during and subsequent to the red tide "season" revealed different retention times of toxin in different species. Samples of the red tide elicited the same paralytic poisoning effects in mice as did toxic shellfish extracts. Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/858 1975-01-01T00:00:00Z Worth, GK; Maclean, JL; Price, MJ