Results 311 to 320 of about 146,591 (359)

Environmental status of a tropical lake system

Environmental Monitoring and Assessment, 2010
Eutrophication has become a serious threat to the lake systems all over the world. This is mainly due to the pollution caused by anthropogenic activities. Carlson trophic state index (CTSI) is commonly used for the classification of trophic conditions of surface waters.
A M, Sheela, J, Letha, Sabu, Joseph
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Lake evaporation estimates in tropical Africa (Lake Ziway, Ethiopia)

Journal of Hydrology, 2001
Abstract Estimates of evaporation from an open shallow lake in tropical Africa (Lake Ziway, Main Ethiopian Rift) are made by using monthly hydrometeorological data available for the past three decades. On the one hand, annual average estimates are inferred from three climatic approaches, which can be applied in areas with limited meteorological data.
Vallet-Coulomb, Christine, Legesse, D, Gasse, Francoise, Travi, Yves, Chernet, T   +4 more
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Phytoplankton studies in a tropical lake (Lake Xolotlán, Nicaragua)

SIL Proceedings, 1922-2010, 1991
(1991). Phytoplankton studies in a tropical lake (Lake Xolotlan, Nicaragua) SIL Proceedings, 1922-2010: Vol. 24, No. 2, pp. 1158-1162.
E. L. Hooker, S. Hernàndez, N. Chow, L. Vargas   +3 more
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Temporal variability of phytoplankton in tropical lakes

Oecologia, 1979
Temporal variability of ecological systems continues to receive theoretical and empirical attention but remains inadequately documented at low latitudes. Results of my comparative investigation of photosynthetic rates of phytoplankton in 6 equatiorial African lakes and similar information from 20 South American, Asian and African lakes studied by ...
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Management of shallow tropical lakes using integrated lake farming

SIL Communications, 1953-1996, 1994
AbstractIntegrated lake farming, which has been developed in China, is similar to integrated agriculture and employs a culture system based on fish and aquatic plants to reduce eutrophication. The plants are used as feed for fish and food for humans, while aquatic wastes serve to accelerate plant growth.
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Ecological energetics of Chaoborus in a tropical lake

Oecologia, 1986
Ecological energetics of Chaoborus brasiliensis from Lake Valencia, Venezuela, were studied between February 1979 and February 1980. Direct measurements were made of the respiration rate, assimilation efficiency, and growth rate of all 4 larval instars and of the pupae.
Claudia, Cressa, William M, Lewis
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Tropical Lakes, Copropel, and Oil Shale

Geological Society of America Bulletin, 1966
During a long-continued study of the lacustrine beds of the Eocene Green River Formation, an attempt was made to interpret past events from observation of present-day processes. After a search of some 40 years, four lakes have been found that are producing a kind of organic ooze judged to be a modern analogue of the precursors of rich oil shale. Two of
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Freeze coring soft sediments in tropical lakes

Journal of Paleolimnology, 2000
A new freeze corer is described that is specifically designed for operation in warm tropical lakes. It combines the standard wedge-shaped freeze-on container with a 20-liter thermos from which pellets of solid CO2 descend into the wedge to replace those that have sublimated.
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Global Climate Change Strikes a Tropical Lake

Science, 2003
Lake Tanganyika, just south of the equator in tropical Africa, is home to many animal species that live nowhere else. As Livingstone reports in his Perspective, historical records of lake temperature, transparency, and fauna collected for over a hundred years reveal that even the thermal inertia of this deep lake has not been able to protect it
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Climate change impact on sub-tropical lakes – Lake Kinneret as a case study

Science of The Total Environment
Climate change is anticipated to alter lake ecosystems by affecting water quality, potentially resulting in loss of ecosystem services. Subtropical lakes have high temperatures to begin with and are expected to exhibit higher temperatures all year round which might affect the thermal structure and ecological processes in a different manner than lakes ...
Shajar, Regev, Yohay, Carmel, Dirk, Schlabing, Gideon, Gal   +3 more
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