A limnological reconnaissance of Lake Lanao: With 6 figures and 3 tables in the text and on 2 folders
A limnological reconnaissance of Lake Lanao: With 6 figures and 3 tables in the text and on 2 folders
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拉瑙湖湖泊学勘察:正文中有 6 张图和 3 张表格,包含 2 个文件夹
DOI:
10.1080/03680770.1968.11895955
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发表时间:
1969
影响因子:
1.9
通讯作者:
D. G. Frey
中科院分区:
文献类型:
--
作者:
D. G. Frey
Lake Lanao on northem Mindanao in the Philippines is of great interest limnologically if for no other reason than that it contains endemic species of various kinds of animals, including a species flock of cyprinids that have evolved in the lake (most recent review by MYERS, 1960, but see also BROOKS 1950, and HERRE 1933). Contrary to the opinion of BAILEY Wu. us (quoted in MYERS 1960) that the lake is only about 10,000 years old, based on the short length of the canyon below Maria Cristina Falls, evidence is accumulating that the lake is mmh older than this, possibly even deriving from the late Tertiary.Relatively little has been published conceming the lake and its limnology, aside from taxonomic studies of the fishes by HERRE (see bibliography in MYERS 1960). The fragmentary and still incompletely published observations of the Wallacea Expedition in 1932 include a maximum depth sounding of 107 m, more than l ppm dissolved oxygen at 90 m on 7 May (in contrast to nearly all other deep lakes of the Philippines in whic: h the oxygen completely disappears relatively dose to the surface), and the inclusion of the lake by WoLTERECK in his group of deep tropical lakes with a complete circulation in winter (WoLTERECK 1933, 1941). This last statement is entirely presumptive, as up to now there have been no seasonal observations on the lake. Besides this there are partial lists of organisms (to genera in most cases, species in some) that occur in the inshore and offshore plankton, and to a lesser extent in the shallow-water benthos (WoLTERECK 1941). These observations, being very fragmentary, do more to suggest limnological processes than define them.