@article{oai:repo.qst.go.jp:00044810,
 author = {Honjo, Mie and Matsui, Kazuaki and Ishii, Nobuyoshi and Nakanishi, Masami and Kawabata, Zenichiro and 石井 伸昌},
 issue = {1},
 journal = {Archiv fur Hydrobiologie},
 month = {Jan},
 note = {We investigated the vertical distribution and dynamics of viral abundance in the
euphotic epilimnion and aphotic hypolimnion during periods of stratification in Lake
Biwa, Japan. The abundance of virus-like particles (VLPs) was lower and more constant
in the hypolimnion than in the epilimnion. Simple correlation analysis demonstrated
that during periods of stratification, VLP abundance in the hypolimnion was positively
correlated with chlorophyll-a concentration, the bacterial abundance of the >0.8-um
fraction, and water temperature. On the other hand, VLP abundance in the epilimnion
was also positively correlated with chlorophyll-a concentration and the bacterial
abundance of the >0.8-um fraction, but was negatively correlated with the bacterial
abundance of the 0.2 - 0.8-um fraction and was not correlated with water temperature.
We observed no correlation between VLP abundance and total bacterial abundance in
either the epilimnion or the hypolimnion. Multiple regression analysis indicated that
VLP abundance was explained by chlorophyll-a concentration in both the epilimnion
and the hypolimnion. Aphotic environment and abundance of phytoplankton and
bacteria in the hypolimnion, suggesting that main host of viruses is bacteria rather than
phytoplankton. However our results suggest that VLP abundance in the hypolimnion
related to the other factors as well as bacterial abundance.},
 pages = {105--112},
 title = {Viral abundance and its related factors in a stratified lake},
 volume = {168},
 year = {2007}
}