| 1 | Zooplankton of Porto Novo, South India An annual (January to December 1973) zooplankton study was simultaneously made in the various aquatic biotopes of Porto Novo. The neritic biotope (the 10 fathom line - Station 9) recorded the maximum number of 105 species of holoplankton and 45 varieties of meroplankton. In this biotope, the calanoid copepods formed 72% of total zooplankton. After the neritic biotope, backwater (Station 5), estuary (Station 8) and mangrove (Station 1) followed in that descending order in their content of total number of species of zooplankton. The copepods (as annual means) alone formed in the latter three biotopes 35.7%, 37.3% and 40.5% respectively of the zooplankton population. The annual mean values of zooplankton showed that the neritic biotope had the maximum number of organisms per m3 i.e., 145,000 organisms/m3, followed by mangrove biotope with 121,000 organisms/m3 and the backwater biotope with 115,000 organisms/m3 and the estuarine biotope with 109,000 organisms/m3. Two peaks of zooplankton were invariably noticed during March/April-September/October in the neritic, estuarine and mangrove biotopes; and, one peak in backwater occurring during March. The zooplankton species composition and variation are discussed Source: Santhanam, R.; Krishnamurthy, K.; Subbaraju, R.C. Bull. Dep. Mar. Sci. Univ. Cochin. 7(4); 1975; 899-911. 0084. | ||
| 2 | Zooplankton of the mangrove ecosystem This paper describes the zooplankton community in Goa, India with particular reference to those found within and around the mangrove areas. Zooplankton abundance depends on the food availability. The estuarine zooplankton species are adapted to tolerate salinity and high sediment and detritus content. The first peak of zooplankton abundance occurs during September/October and the second peak in April/May. The true mangrove zooplankton shows eco-physiological adaptions. Zooplankton of the mangrove swamps served as an ideal nursery of commercial species Source: Goswami, S.C. 2nd Introductory Training Course on Mangrove Ecosystems, Goa, India, November 1 - 25, 1984: Report of the Training Course. UNDP/UNESCO Reg. Proj. RAS/79/002. 1984; 77-79. 0215. | ||
| 3 | Species composition and abundance of tintinnids and copepods in the Pichavaram mangroves (South India) The annual pattern of distribution and abundance of tintinnids and copepods - taking them as the representatives of the major components of microzooplankton (20 to 200 mu m) and mesozooplankton (200 mu m to 2 mm), respectively - was studied at the Pichavaram mangroves (India). Monthly samplings were made from January to December 1989, covering three stations. For tintinnids, density varied from 60 to 44,990 org./m3. Agglomerated tintinnids were the dominant form. The maximum abundance (80,740 org./m3) of copepods was recorded in the freshwater and neritic water mixing zone (station 2) during summer and the lowest (80 org./m3) in the freshwater zone (station 1). The genera Acartia and Acrocalanus (belonging to the suborder Calanoida). Macrosetella and Euterpina (belonging to the Harpacticoida), and Oithona (belonging to the Cyclopoida) were coincident with the maximum species abundance at station 2. Species like Acartia southwellii and Oithona brevicornis were observed during the lower abundance period. Calanoid and harpacticoid copepods were also dominant at station 3. A significant positive relationship between the abundance of tintinnids and copepods was observed. The seasonal distribution and abundance of tintinnids and copepods are discussed in relation to hydrographical parameters Source: Godhantaraman, N. Cienc. Mar.. 20(3); 1994; 371-391. 0884. | ||
| 4 | Relationship between plankton and finfish and shellfish juveniles in Pichavaram mangrove waterways, south east coast of India Qualitative and quantitative assessments of phytoplankton in Pichavaram mangrove, Tamil Nadu, India waterways were made monthly for a period of two years (1980-82) in order to investigate the relationship between phytoplankton abundance and that of the juveniles of commercially important finfish and shrimps. Totally 84 species of phytoplankton comprising 74 species of diatoms, 5 species of dinoflagellates, 4 species of blue green algae and 1 species of green alga were recorded. The density of phytoplankton ranged from 12 to 40,11,872 cells/1 during the period with peaks during summer and post-monsoon seasons. The positive relationship observed between the phytoplankton and the finfish and shrimp juveniles, indicates that phytoplankton could be one of the major factors influencing the temporal fluctuations of the populations of fish juveniles in this mangrove biotope. Source: Chandrasekaran, V.S. Seaweed Res. Util.. 22(1-2); 2000; 199-207. 1131.
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