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Titlebook: Lake Chilwa; Studies of Change in Margaret Kalk (Professor Emeritus of Biology),A. J Book 1979 Dr. W. Junk bv Publishers, The Hague 1979 al

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發(fā)表于 2025-3-21 16:11:48 | 只看該作者 |倒序瀏覽 |閱讀模式
書目名稱Lake Chilwa
副標(biāo)題Studies of Change in
編輯Margaret Kalk (Professor Emeritus of Biology),A. J
視頻videohttp://file.papertrans.cn/581/580489/580489.mp4
叢書名稱Monographiae Biologicae
圖書封面Titlebook: Lake Chilwa; Studies of Change in Margaret Kalk (Professor Emeritus of Biology),A. J Book 1979 Dr. W. Junk bv Publishers, The Hague 1979 al
描述Leonard C. Beadle In contrast to the more sta bie oceans, inland waters are, on the geological time scale, short-lived and are subject to great fluctuations in chemical composition and physical features. Very few lakes and rivers have existed continuously for more than a million years, and the life of the majority is to be measured in thousands or less. Earth movements, erosion and long-term climatic changes in the past have caused many of them to appear and disappear. No wonder then that most freshwater organism are especially adapted to great changes and many even to temporary extinction of their environment. Recent studies of residual sediments from existing and extinct lakes in tropical Africa have told us much about their age and the past history of their faunas and floras, from which we may deduce something about the climate and the conditions in the water in the past. The forces that have formed and moulded the African Great Lakes have been catastrophic in their violence and effects. They are not yet finished, but the present rate of change is, in human terms, too slow for direct observation of the ecological effects. The large man-made lakes are providing very good opportun
出版日期Book 1979
關(guān)鍵詞algae; benthic; catchment area; ecosystem; fisheries; macrophytes; zooplankton
版次1
doihttps://doi.org/10.1007/978-94-009-9594-9
isbn_ebook978-94-009-9594-9Series ISSN 0077-0639 Series E-ISSN 2215-1729
issn_series 0077-0639
copyrightDr. W. Junk bv Publishers, The Hague 1979
The information of publication is updating

書目名稱Lake Chilwa影響因子(影響力)




書目名稱Lake Chilwa影響因子(影響力)學(xué)科排名




書目名稱Lake Chilwa網(wǎng)絡(luò)公開度




書目名稱Lake Chilwa網(wǎng)絡(luò)公開度學(xué)科排名




書目名稱Lake Chilwa被引頻次




書目名稱Lake Chilwa被引頻次學(xué)科排名




書目名稱Lake Chilwa年度引用




書目名稱Lake Chilwa年度引用學(xué)科排名




書目名稱Lake Chilwa讀者反饋




書目名稱Lake Chilwa讀者反饋學(xué)科排名




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The physical environment of Lake Chilwaift Valley in southern Malawi. It is separated from Lake Chiuta, which is linked to Lake Amaramba and Lugenda River in Mozambique, by a sand bar some 25 m high (Fig. 2.1). The lake lies at a mean altitude (1950–1976) of 622 m above sea level and had an open water area of 678 km. in 1972. This was su
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Algae in Lake Chilwa and the waters of its catchment areal been observed in progress, the microscopic algae seem to have been moved rather readily by air currents and animals associated with water. There may be endemic tropical freshwater micro-algae, and careful workers have indeed recognized some on the basis of descriptive studies. However many algae a
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Zooplankton in Lake Chilwa: adaptations to changesreproduction (eight or more generations a year in the tropics) and with resistant resting stages in times of stress. The most abundant in fresh water are crustaceans (cladocerans and copepods) and rotifers. Few are predators and most feed on algae and bacteria and on the organic material derived fro
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Fishes: Distribution and biology in relation to changesters 9 and 14). A peculiar exception is the little cyprinodont fish, ., of temporary tropical pools in Africa which is well known to go into a diapause phase during dryness, as a retarded embryo within the egg membrane (Wourms 1964). These general constraints have imposed a very wide tolerance of ch
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