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Tablc 17. Contd .. - Sternaspidae 0 0 0 0 0 Sleraspis seutata 40 60 20 17 0 FlabeJligeridae 0 0 0 0 0 Pycnoderma eongoense 0 0 40 0 0 Ampharetidae 0 0 0 0 0 Amphrete aeutifrons 20 20 0 0 0 Amphicteis gunneri 0 20 20 0 0 Amphicteis sp. 0 0 0 0 0 Phyllocomus hi/toni 20 0 0 0 0 Terebellidae 0 0 0 0 0 Terebellides stroemi 20 0 20 0 0 Lanice conchilega 0 0 20 0 0 Slreblosoma persiea 0 0 20 0 0 Lysilla sp. 0 0 20 0 0 Pisla foliigera 0 0 20 0 0 P.quadrilobata 0 0 20 0 0 Arlacama proboscidea 20 0 0 0 0 Sabellidae 0 0 0 0 0 Megalomma vesieulosum 0 0 40 0 0 Desdemona ornata 0 0 20 0 0 Total species 37 34 59 27 6 Errantia 8 11 19 8 1 Sedentaria 29 23 40 19 5 Abundant species 6 7 4 1 0 Moderately occurring species 12 10 18 10 6 Rare species 19 17 37 16 0 167
Taxa 30m 50m 75m lOO m 150m CRUSTACEANS Oecapoda sp. 80 20 0 33 Scrgestid 20 0 0 17 Megalopa 60 0 0 17 Lobster 20 20 0 33 Caridian prawns 80 20 60 17 Acetes 0 0 0 17 Amphipoda 0 0 0 0 Melila zeylanica 0 0 0 17 Eriopisa chi/kensis 40 20 20 0 Quadriovisio bengalensis 20 20 0 0 Gr<strong>and</strong>idierella gilesi 40 0 20 0 Isopoda 0 0 0 0 Anthuridae 20 0 20 0 Ostracoda 20 20 0 0 -- MOLLUSCS 0 0 0 0 Cardium sp. 20 20 0 33 Bivave 0 0 0 0 Mactra sp. 40 20 20 33 Tellina sp. 20 60 0 17 Si/iqua sp. 0 0 0 17 Sunetla scripta 0 0 20 17 Gastrpod 0 0 0 0 Nassarius sp. 40 0 20 17 Prunum sp. 0 0 0 17 Bulla sp. 0 0 0 17 Atys sp. 0 20 0 0 _._-- MISCELLANEOUS GROUPS 0 0 0 0 Nematodes 20 0 0 0 Sipunculoides 60 20 20 0 Juvenile fish 0 20 0 0 Platyhelminthes 20 20 0 0 Nudibranches 0 20 0 0 Echiroides 20 0 0 0 Total groups 18 14 8 15 Abundant species 2 0 0 0 Moderately abundant species 6 I 1 4 Rare s(!ecies 10 13 7 11 Table 18 - Percentage occurrence <strong>of</strong> groups in various depth zones during postmonsoon 0 0 0 () 0 0 0 0 0 0 0 0 0 0 0 33 0 67 100 0 33 0 0 0 0 0 0 0 0 0 0 0 0 4 1 3 0 168
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Certificate I hereby certify that t
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Contents Page No. Chapter 1. Introd
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the bottom. Ekman (1935) described
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wonns are the most abundant group a
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leadership of Sir James Clark Ross,
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Ansari et al., (1977b) carried out
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Gopalakrishnan and Nair (1998) cond
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Major objectives:- 1. To understand
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CMFRI (Central Marine Fisheries Res
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Joydas, T.V., Damodaran, R., 2001.
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monitoring committee (Atlantic Mari
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Vizakat Lathika, I-Iarkantra, S. N.
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analysed after acidification by tit
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used as stain prior to sorting and
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space. Therefore, it is very essent
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Fig. I - Station locations 32
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affected at high temperature. Most
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layers exhibit different oceanograp
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Transect wise variation in temperat
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3.2.2.3. Dissolved oxygen (DO) Dist
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monsoon temperature initially incre
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opined that limited mixing. high or
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Naqvi, S. W. A., Noronha, R. J., Re
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orr Mormugao orr Vernal 35.36 35.32
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The continental shelf and its adjoi
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sediments (4 stations). Silty sand
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fine sediments with comparatively h
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Narayana, 1991 ). Limited input of
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In general. two ditlerent patterns
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et al., (1980) reported values in t
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organisms living in the water and t
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Hashimi, N. H., Kidwai, R. M., Nair
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Postma, H., 1967. In Estuaries, Lau
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Depths Sand Silt Clay Organic matte
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• PRE'MONSOON SOUTHERN'TRANSECTS
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as the best indicators of the envir
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showed that northern transects have
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decreased from shallow to deeper de
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different depth zones showed that a
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cm 2 with a dominance of nematodes.
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and 6.08 g/m 2 were recorded during
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were located in the nearshore water
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changes in the hydrographical and t
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factor for such a large difference
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Belegvad, H., 1932. Investigations
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Parulekar, A. H., Harkantra, S. N.,
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Savich, M. S., 1972. Quantitative d
Page 123 and 124: Traosects Polychaetes Crustaceans M
Page 125: Miscellaneous Transects Nematodes C
Page 128 and 129: Depths Nematodes Cope pods Foramini
Page 136 and 137: Wagh, 1975; Parulekar et ai, 1976;
Page 138 and 139: ones and 17 were included in the 'r
Page 140 and 141: Nephtydae (2%). Among the 20 sedent
Page 143 and 144: At 75 m zone, 31 groups/species wer
Page 145 and 146: Porbandar. At 50 m depth zone, fluc
Page 148 and 149: otTMumbai and Ratnagiri and low eve
Page 150 and 151: species richness at each depth zone
Page 153 and 154: E2.2.2.!. Richness (Margalef's inde
Page 155: I ):.2.2.2.4. Dominance (Pie/ou's i
Page 176: Table 20. contd .. G. alba 20 25 20
Page 179: 150 Taxa 30m 50m 75m lOOm 150 m m D
Page 186: 9% 1% o poIychaete • crustacea o
Page 203 and 204: a) c) e) g) Plate 5 a) Prinospio sp
Page 205 and 206: a) c) e) Plate 7 a) Cardium sp. d)
Page 207 and 208: 7/. /ntroduct ion 7.2. Hydrography
Page 211 and 212: also showed a similar pattern with
Page 213 and 214: y most of the organisms. It was als
Page 215 and 216: with sand of which total density (r
Page 217 and 218: muddy bottom of the west coast of I
Page 219 and 220: crustaceans and miscellaneous group
Page 221: the organic rich environment with h
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Icvci (p
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mcioHmna serve primarily as rapid m
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surface chlorophyll a was 0.36mg I
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Devassy, V. P., Achuthankutty, C. T
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Longhrust, A. R., Pauly, D., 1987.
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Sikora, W. B., 1977. The ecology of
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Faunal groups Silty Clayey Mixed Sa
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Mannagoa to Porbandar located betwe
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against gastropods during pre- mons
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