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|Authors:||Роухияйнен, М. И.|
Георгиева, Л. В.
Сеничкина, Л. Г.
|Title:||Состав, количественное развитие и распределение фитопланктона в Центрально-Американских морях|
|Other Titles:||Composition, Quantitative Development and Distribution of Phytoplankton in the Central American Seas|
|Publisher:||Киев : Наукова думка|
|Series/Report no.:||Исследования Центрально-Американских морей|
|Description:||Investigations of phytoplankton in the Central American Seas were mainly limited to the Florida shelf. Moreover, only the species of representatives causing the «flowering» of water was determined and in most cases only the genus is mentioned in literature. The quantitative evaluation of phytoplankton development in the Cuban waters as well as information on the significance of definite areas in the production of organic matter were practically absent till investigations of the Soviet-Cuban expedition 1964-1965. Data obtained in September — December 1964 by this expedition in the south and south-west of the Gulf of Mexico, the Florida Straitand the north-west of the Caribbean Sea in some degree make up for the mentioned deficiency. As a result about 500 species related to Bacillariophyta, Pyrrophyta, Chrysophyta, Cyanophyta, Euglenophyta, Chlorophyta, Xanthophyta were registered in the Central American Seas. A maximum number of species (303) was detected in the Gulf of Mexico mainly owing to the prevalence of diatomaalgae. The most intensive phytoplankton development occurs in the shallow waters or zones of upwelling. These zones in the Gulf of Mexico are a nerrow littoral band including the whole bank of Campeche, the western part of the Yukatan Strait (near Cape Ratoche), the southern slope of the Florida shelf, the central part of the Caribbean Sea and slopes of the Ganduras shelf. The maximal avarage indice of phytoplankton development for deep water is found out in the Caribbean Sea, for shallow waters — in the Gulf of Mexico. In shallow waters phytoplankton distribution is relatively uniform within the whole depth. From one to three maxima were noted with the depth increase. On the whole the depth of a trophogenic layer in geep waters reached 100—150 m.|
|Appears in Collections:||Исследования Центрально-Американских морей. - Вып. 2|
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