Organic Geochemistry of a 200-meter Core Sample from Lake Biwa. II
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چکیده
منابع مشابه
Molecular mass distribution and ̄uorescence characteristics of dissolved organic ligands for copper(II) in Lake Biwa, Japan
Molecular mass distribution and ̄uorescence characteristics of organic ligands for copper(II) in freshwater were, for the ®rst time, investigated using ultra®ltration, immobilized metal ion anity chromatography (IMAC) and threedimensional excitation-emission matrix spectroscopy (3DEEM). Two types of humic-like ̄uorescence (Peaks A and B) were found in all molecular ligand fractions, while an a...
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Methane oxidation coupled to denitrification is mediated by 'Candidatus Methylomirabilis oxyfera', which belongs to the candidate phylum NC10. The distribution of putative denitrifying methane-oxidizing bacteria related to "M. oxyfera" was investigated in a freshwater lake, Lake Biwa, Japan. In the surface layer of the sediment from a profundal site, a phylotype closely related to "M. oxyfera" ...
متن کاملSeasonal distribution of cyprinid herpesvirus 3 in Lake Biwa, Japan.
The seasonal distribution of the cyprinid herpesvirus 3 (CyHV-3) in Lake Biwa, Japan, was investigated. CyHV-3 was distributed all over the lake 5 years after the first outbreak. The mean concentration of CyHV-3 in water showed annual oscillation, with a peak in the summer and a trough in winter. Our results suggested that CyHV-3 is present at high density in reductive environments, such as ree...
متن کاملIsolated history of the coastal plant Lathyrus japonicus (Leguminosae) in Lake Biwa, an ancient freshwater lake
BACKGROUND AND AIMS Lake Biwa is one of the world's few ancient lakes. Formed ∼4 million years ago, the lake harbours many coastal species that commonly inhabit seashores. The beach pea Lathyrus japonicus is a typical coastal species of this freshwater lake, but its inland populations are faced with the threat of extinction. Here, we investigated the phylogeographical and population structures ...
متن کاملDeterminations of humic substances and other dissolved organic matter and their effects on the increase of COD in Lake Biwa.
Humic substances and other dissolved organic matter (DOM) in Lake Biwa and the surrounding rivers were investigated to elucidate their origins and behavior. An annual increase in chemical oxygen demand (COD) has been observed in the northern basin of Lake Biwa since 1985. The concentrations of dissolved organic carbon (DOC) in the northern and southern basins of Lake Biwa were 1.7-2.4 mgC/l and...
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ژورنال
عنوان ژورنال: Proceedings of the Japan Academy
سال: 1975
ISSN: 0021-4280
DOI: 10.2183/pjab1945.51.436