Results 161 to 170 of about 29,608 (209)
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Dynamics of a large tropical lake: Lake Maracaibo
Aquatic Sciences, 2005The dynamics of a large tropical lake, Lake Maracaibo, Venezuela, are described using field data and the 3D Estuary and Lake Computer Model (ELCOM). ADCP data from November 1998 and CTD data spanning September 1998 to April 1999 are presented. Seawater enters Lake Maracaibo via an augmented natural connection to the Gulf of Venezuela, which allows an ...
Bernard E. Laval +2 more
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Thermoclines in Tropical Lakes
Nature, 1932THE thermocline is a feature of most temperate lakes during the summer months, and is normally destroyed during the winter by a complete overturn of the water, due to cooling at the surface. Little work has been done, however, on such conditions in equatorial lakes, where there is no marked seasonal difference in temperature.
E. B. WORTHINGTON, L. C. BEADLE
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Novel cyanotoxin-producing Synechococcus in tropical lakes
Water Research, 2021Picocyanobacteria are small cyanobacteria, being about 0.8-1.5 µm in size. They are present in freshwater environments all over the world and are known to cause harmful algal blooms, although their effects are not well understood. Algal blooms are important to manage because they threaten freshwater resources, with potentially severe effects on ...
Karina Yew-Hoong Gin +7 more
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Ecological energetics of Chaoborus in a tropical lake
Oecologia, 1986Ecological 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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Environmental status of a tropical lake system
Environmental Monitoring and Assessment, 2010Eutrophication 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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Temporal variability of phytoplankton in tropical lakes
Oecologia, 1979Temporal 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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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 +3 more
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Occurrence of organochlorine pesticides in a tropical lake basin
Environmental Monitoring and Assessment, 2017This study investigates the presence and distribution of organochlorine pesticides in streams and the lake in the Sembrong Lake Basin in Malaysia. The catchment of Sembrong Lake has been converted to agricultural areas over the past 30 years, with oil palm plantations and modern agricultural farming being the main land use.
Zati, Sharip +2 more
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Lake evaporation estimates in tropical Africa (Lake Ziway, Ethiopia)
Journal of Hydrology, 2001Abstract 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 +4 more
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Limnological Features of a Tropical Meromictic Lake
Hydrobiologia, 1969Studies of a man-made tropical lake bordering the Pacific Ocean revealed a case of thermal inversion caused by the superposition of brackish water upon more saline water. An interesting biological community was observed characterized by sparse plankton and abundant organisms attached to vertical basaltic walls.
E. G. Bozniak +3 more
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