Ecology of deepwater rice-fields in Bangladesh 1. Physical and chemical environment

Hydrobiologia ◽  
1988 ◽  
Vol 169 (1) ◽  
pp. 3-67 ◽  
Author(s):  
B. A. Whitton ◽  
A. Aziz ◽  
P. Francis ◽  
J. A. Rother ◽  
J. W. Simon ◽  
...  
Keyword(s):  
Rice Fields ◽  
Chemical Environment ◽  
Deepwater Rice ◽  
Physical And Chemical

3. Sedimentary rocks

2016 ◽  
pp. 29-50
Author(s):  
Jan Zalasiewicz
Keyword(s):  
Sedimentary Rock ◽  
Chemical Weathering ◽  
Sedimentary Rocks ◽  
Chemical Environment ◽  
Combined Effects ◽  
Star System ◽  
The Earth ◽  
Different Types ◽  
Physical And Chemical

The Earth has the greatest abundance and variety of sedimentary strata in our star system, dating back some 3.8 billion years. ‘Sedimentary rocks’ describes the processes that create different types of sedimentary rocks, which form a key guideline in reconstructing Earth’s history. Particles are created by both physical and chemical weathering. These particles are then moved by different modes of transport and sorted by size, which affect the resulting sedimentary rock. Sedimentary layers can remain as soft muds or loose sands for millions of years, but most buried sedimentary layers harden and turn into rock, under the combined effects of increasing heat and pressure, and of changes in chemical environment.

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

Physical and chemical environment ofKhawrMugsayl, a coastal lagoon in southern Oman

1997 ◽  
Vol 36 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Reginald Victor ◽  
Jayanthi R Victor ◽  
Nicholas V Clarke
Keyword(s):  
Coastal Lagoon ◽  
Chemical Environment ◽  
Physical And Chemical

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

Methane emission from deepwater rice fields in Thailand

2000 ◽  
pp. 121-130 ◽  
Author(s):  
N. Chareonsilp ◽  
C. Buddhaboon ◽  
P. Promnart ◽  
R. Wassmann ◽  
R. S. Lantin
Keyword(s):  
Methane Emission ◽  
Rice Fields ◽  
Deepwater Rice
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