Hydrographic Studies on Saroma-Lake, Hokkaido

Studies on helminths of voles in Hokkaido. II. Ecological study.

The endemic gastropod fauna of Lake Titicaca: correlation between molecular evolution and hydrographic history

Lake Titicaca, situated in the Altiplano high plateau, is the only ancient lake in South America. This 2- to 3-My-old (where My is million years) water body has had a complex history that included at least five major hydrological phases during the Pleistocene. It is generally assumed that these physical events helped shape the evolutionary history of the lake's biota. Herein, we study an endemi...

Estimated Global Hydrographic Variability

An estimate is made of the three-dimensional global oceanic temperature and salinity variability, omitting the seasonal cycle, both as a major descriptive element of the ocean circulation and for use in the error estimates of state estimation. Historical hydrography, recent data from the World Ocean Circulation Experiment, and Argo profile data are all used. Root-mean-square vertical displaceme...

Studies on the Population Dynamics of Typha at Lake Pukepuke

Harper (1977) has recently stressed the significance of the modular construction of plants. Plants respond to density not so much by changing the proportions of their parts, as by changing the number of basic modules of which they are composed. In the case of deciduous rhizomatous perennials, such as Typha orientalis, the basic module can be defined as a single above-ground shoot and its associ...

Studies on Some Lake-Mud Strains of Micromonospora.

Representatives of the genus Micromonospora have so far been reported mainly from soil or, in the case of thermophiles, from composts. The type species, M. chalceae, described by ,2rskov (1923) who erected the genus, was first isolated by Foulerton (1905) under the name Streptothrix chalceae. This remained the only known strain among the Actinomycetes bearing the generic name Micromonospora unt...