cover image: Memoirs of the Asiatic Society of Bengal. Introduction to the Study of the Fauna of an Island in the Chilka Lake

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Memoirs of the Asiatic Society of Bengal. Introduction to the Study of the Fauna of an Island in the Chilka Lake

1922

In the interior the rock is for the most part covered with a thin layer of red soil but on the foreshore of which a cosiderable area is exposed as the floods recede in autumn after the end of the monsoon rains it crops up on the surface round a great part of the periphery of the island and even inland there are stony and rocky areas with hardly any soil. [...] The seasonal changes vary in extent from year to year in correlation with the raifall in the basin of the Mahanadi a branch of which enters the northern part of the lake and also in all probability with the size and position of the sea-mouth which vary as a result of changes in the currents on the coast and other factors of which at present we know little. [...] The typical form of M. casta still lives in the outer channel of the Chilka Lake but all forms of the species have disappeared from the main area in which the dense mud of the bottom is now quite unsuitable for the activities of a mollusc with so heavy a shell. [...] 131anford ' in his Sketch of the Geology of Orissa " says of the Chilka Lake :— " The lake itself is a part of the sea first rendered shallow by deposits from the mouths of the Mahanaddi and from the silt carried up the bay round the hills near Ganjam by the violent southernly winds of the monsoon and then entirely cut off by a spit formed by the same agency of sand drifted along the coast. [...] It is quite probable to judge from the condition of the shells that the deposits of Meretrix on the island do not occupy precisely the situations in which the mollusc originally lived and all the shells from the shore of the island have the appearance of having been rolled about in the water ; but the distribution of the species in a subfossil state correponds on the whole with their habits
agriculture environment
Pages
71
Published in
India
SARF Document ID
sarf.100203
Segment Pages Author Actions
Cover
i-i N. Annandale, V. Narayanaswami view
Introduction to the Study of the Fauna of an Island in the Chilka Lake
257-288 N. Annandale, V. Narayanaswami view
Systematic List of the Plants of Barkuda
289-317 V. Narayanaswami view
Explanation of Plates
318-v N. Annandale, V. Narayanaswami view
Backmatter
i-ii N. Annandale, V. Narayanaswami view

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