scholarly journals Confirmation of surface area of the southern basin of Lake Biwa Japan

2006 ◽  
Vol 67 (2) ◽  
pp. 123-126 ◽  
Author(s):  
Hiroki HAGA
Keyword(s):  
Surface Area ◽  
Lake Biwa ◽  
Southern Basin

A Comparison of Liquid Scintillation and Geiger–Müller Estimates of Primary Productivity in an in situ Experiment

1973 ◽  
Vol 30 (5) ◽  
pp. 708-711 ◽  
Author(s):  
F. J. Ward ◽  
Masami Nakanishi
Keyword(s):  
Light Intensity ◽  
Surface Area ◽  
Primary Productivity ◽  
Liquid Scintillation ◽  
Lake Biwa ◽  
In Situ Experiment ◽  
M Estimate ◽  
M Estimates ◽  
Loss Rates

For an in situ experiment conducted in Shiozu Bay, Lake Biwa, Japan, primary productivity estimates from liquid scintillation radioactivity counts of wet algae were generally higher than those from Geiger–Müller radioactivity counts of desiccated algae. Values at 0 m were similar, the G–M estimate at 0.5 m was 10% higher, but from 3 to 13 m the liquid scintillation values ranged from 11 to 33% higher than G–M estimates. The 20-m estimates were low and similar. Differences were caused primarily by 14C losses during desiccation prior to G–M counting. Increasing loss rates between 0.5 and 3.0 m may have been caused by decreasing light intensity. On the basis of surface area, the estimate from liquid scintillation data was 27% greater than that obtained from G–M data.

Echosounding observations of coverage, height, PVI, and biomass of submerged macrophytes in the southern basin of Lake Biwa, Japan

Limnology ◽  
2007 ◽  
Vol 8 (2) ◽  
pp. 95-102 ◽  
Author(s):  
Hiroki Haga ◽  
Taisuke Ohtsuka ◽  
Masanari Matsuda ◽  
Minako Ashiya
Keyword(s):  
Lake Biwa ◽  
Submerged Macrophytes ◽  
Southern Basin

scholarly journals Run-off of Herbicides from Paddy Fields around the Southern Basin of Lake Biwa.

1996 ◽  
Vol 19 (7) ◽  
pp. 547-556 ◽  
Author(s):  
Yasuhiro SASAGAWA ◽  
Saburo MATSUI ◽  
Harumi YAMADA
Keyword(s):  
Lake Biwa ◽  
Paddy Fields ◽  
Southern Basin ◽  
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