Ecology of deepwater rice-fields in Bangladesh 6. Influence of environmental factors on seasonal changes in the rice plant

Hydrobiologia ◽  
1995 ◽  
Vol 302 (3) ◽  
pp. 189-195 ◽  
Author(s):  
B. P. Jupp ◽  
B. Rahman ◽  
B. A. Whitton
Keyword(s):  
Environmental Factors ◽  
Seasonal Changes ◽  
Rice Plant ◽  
Rice Fields ◽  
Deepwater Rice

Ecology of deepwater rice-fields in Bangladesh 2. Chemistry of sites at Manikganj and Sonargaon

Hydrobiologia ◽  
1988 ◽  
Vol 169 (1) ◽  
pp. 23-30 ◽  
Author(s):  
B. A. Whitton ◽  
J. A. Rother ◽  
Ashit R. Paul
Keyword(s):  
Rice Fields ◽  
Deepwater Rice

Seasonal changes in louse populations on white-tailed deer (Odocoileus virginianus)

1975 ◽  
Vol 53 (8) ◽  
pp. 1047-1054 ◽  
Author(s):  
Thomas G. Watson ◽  
Roy C. Anderson
Keyword(s):  
Environmental Factors ◽  
Solar Radiation ◽  
Head And Neck ◽  
Odocoileus Virginianus ◽  
Seasonal Changes ◽  
Radiation Temperature ◽  
Upper Body ◽  
Immature Stages ◽  
Body Regions ◽  
Biting Lice

The hides of 47 white-tailed deer (Odocoileus virginianus) shot at Long Point, Ontario, between September 1972 and August 1973 were examined for lice. Adult Tricholipeurus lipeuroides were most abundant from January to April and T. parallelus from May to August. The distributions of biting lice changed over the study period, possibly influenced by environmental factors such as solar radiation, temperature, rainfall, and changes in pelage. Solenopotes ferrisi was found throughout the study period. There was no significant change in abundance of the various louse stages throughout the study, although all stages were slightly more numerous during winter. Adults primarily infested the head and neck, while immature stages infested upper body regions. Changes in distribution of lice may be the result of environmental and host pelage changes.

ENVIRONMENTAL CHARACTERIZATION OF FLOODWATER IN EASTERN INDIA: RELEVANCE TO SUBMERGENCE TOLERANCE OF LOWLAND RICE

1999 ◽  
Vol 35 (2) ◽  
pp. 141-152 ◽  
Author(s):  
P. C. RAM ◽  
A. K. SINGH ◽  
B. B. SINGH ◽  
V. K. SINGH ◽  
H. P. SINGH ◽  
...  
Keyword(s):  
Rice Fields ◽  
Lowland Rice ◽  
Submergence Tolerance ◽  
Eastern India ◽  
Deepwater Rice ◽  
Field Surveys ◽  
Saturated Water ◽  
Rainfed Lowland ◽  
Water Profile

Floodwater was characterized through field surveys over three years in rainfed lowland and deepwater rice areas of Eastern India. Measurements focused on dissolved O2 and CO2, pH and irradiance during flash floods in rice fields. Over locations and time, dissolved O2 concentrations ranged from zero to 0.28 mol m−3 (0–1.1 times air-saturated water at 30 °C) while dissolved CO2 ranged from 0.28 to 1.96 mol m−3 (31–217 times air-saturated water). Floodwater pH varied from 6.6 to 9.7. Irradiance decreased with depth in the water profile to an extent depending on turbidity. Turbidity varied greatly over locations and time. The significance of these measurements in assessing rice submergence tolerance is discussed.

Ecology of deepwater rice-fields in Bangladesh 3. Associated algae and macrophytes

Hydrobiologia ◽  
1988 ◽  
Vol 169 (1) ◽  
pp. 31-42 ◽  
Author(s):  
B. A. Whitton ◽  
Abdul Aziz ◽  
B. Kawecka ◽  
J. A. Rother
Keyword(s):  
Rice Fields ◽  
Deepwater Rice
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