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Hydrobiology of lagoons

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Relation http://eprints.cmfri.org.in/2654/
 
Title Hydrobiology of lagoons
 
Creator Girijavallabhan, K G
David Raj, I
Alavandi, S V
 
Subject Oceanography
 
Description The hydrography, productivity, zooplankton biomass and faunistic composition of the lagoons of
Lakshadweep were studied during January-March 1987 period. The surface temperature of lagoon
waters off Agatti and Kalpeni reached the maximum temperature of 38"C. Even during night period
the temperature was in the range of 32-33°C in the Minicoy lagoon. Salinity values of surface
samples of lagoons of Kalpitti, Bangaram and Kalpeni mere in the range 36%o to 39.39%o. Low dissolved
oxygen value of 1-1B ml/litre was observed in Suhelipar lagoon. In most of the lagoons the secondary
production was very poor but biomass of zooplankton from the seaward side of the lagoons was slightly
higher suggesting that the oceanic zooplankton might be nourished by coral reef community. Minicoy
lagoon is an exception where the biomass of zooplankton was very high being 61.25 ml and the
biomass of samples collected from the sea was 9.5 ml. Swarming 'of Lucifer sp, Copepods and
Linglea sp. (algae) has increased the standing crop of lagoon. In most of the lagoons, decapod
larvae and copepods constituted the dominant items, other zooplankter like fish eggi, chaetognaths,
siphonophores and appendicularians also occurred In small numbers. In lagoon samples of Bangaram
and Kavaratti fish eggs formed 8.73% and 17.38% of total biomass respectively.
 
Publisher CMFRI
 
Date 1989
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/2654/1/Article_21.pdf
Girijavallabhan, K G and David Raj, I and Alavandi, S V (1989) Hydrobiology of lagoons. CMFRI Bulletin Marine living resources of the union territory of Lakshadweep An Indicative Survey With Suggestions For Development, 43. pp. 200-211.