Results 211 to 220 of about 23,206 (256)
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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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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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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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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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Management of shallow tropical lakes using integrated lake farming
SIL Communications, 1953-1996, 1994AbstractIntegrated 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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Dynamics and Succession of the Phytoplankton in a Tropical Lake: Lake Lanao, Philippines
The Journal of Ecology, 1978SUMMARY (1) Phytoplankton dynamics in Lake Lanao, Philippines, were studied over a 16-month period on the basis of weekly abundance measurements for seventy species and a number of physical and chemical variables. (2) An analysis of growth pulses and growth correlations in the major classes of phytoplankton provides evidence that the niche space is ...
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