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Abstract - Issue Nov 2012, 33 (6) Back
nstantaneous and historical temperature effects on a-pinene
Some
ecological aspects and potential threats to an intertidal
gastropod,
Umbonium vestiarium
Author
Details
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S.
Sivadas
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National
Institute of Oceanography (CSIR), Biological Oceanography Division, Goa-403
004, India
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B.
Ingole
(Corresponding author)
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National Institute of Oceanography
(CSIR), Biological Oceanography Division, Goa-403 004, India
e-mail
: baban@nio.org
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A.
Sen
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Biology
Department, Pennsylvania State Universities, University Park, PA 16802, USA
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Publication
Data
Paper received:
19 May 2011
Revised received:
16 September 2011
Re-revised received:
25 October 2011
Accepted:
16
November 2011
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Abstract
Kalbadevi Bay in Ratgnairi has been
identified as potential site for placer mining along the west coast of India.
Since, U. vestiarium is a keystone species of the region; study on
some ecological aspect was carried. The paper also discusses the possible
impact of beach sand mining and other threats to this ecologically important
gastropod. Seasonal sampling was carried in 2004-2005 at 13 transects by
quadrate method. U. vestiarium was restricted to mid and low tide zone
of Station 1-3 and 8-10 located at the north and south ends of the beach.
Abundance was highest at Station 10 MT (16 to 12488 ind m-2). Based on the size-frequency,
it may be considered that U. vestiarium like other tropical fauna
recruit during monsoon.? Eleven different colour patterns of U. vestiarium
were observed. However, average individual size was larger in the samples
collected from the north (stn. 1-3) end of the beach. The fastidious nature
and sporadic distribution of U. vestiarium make them vulnerable to
natural and anthropogenic disturbance. ???
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Key words
Ecology,
Mining inpact, Umbonium vestiarium, Polymorphism, Kalbadevi bay
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