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Abundance and seasonal variations of phytoplankton in the creek waters of western mangrove of Kachchh-Gujarat 总被引:1,自引:0,他引:1
Saravanakumar A Rajkumar M Thivakaran GA Serebiah JS 《Journal of environmental biology / Academy of Environmental Biology, India》2008,29(2):271-274
The phytoplankton was assessed quantitatively and qualitatively in regard to their abundance in creek waters at three sites along the western mangrove of Kachchh. In total one hundred and four species of phytoplankton were identified. Among them 82 species diatoms (Bacillariophyceae), 16 species dinoflagellates (Dinophyceae), 3 species blue greens (Cyanophyceae) and 2 species were green algae. The density in all the three sites varied from 94,166.67 to 2,44,500 cells l(-1). The salinity ranged from 36 to 44 per thousand, temperature 17 to 35 degrees C and pH ranged from 7 to 8.9 respectively. These semi arid zone mangrove creek area having high densities were recorded during monsoon and early winter season. 相似文献
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Ayyappan Saravanakumar Mayalagu Rajkumar Jun Sun Jebaraj Sesh Serebiah Gobi Alagiri Thivakaran 《Journal of Coastal Conservation》2009,13(4):217-234
To understand natural and anthropic control of mangrove vegetation in the Gulf of Kachchh, a study was undertaken of its vegetation
structure. Over 2 years (1999–2000) at three sites, mangrove vegetation was studied, including tree density, tree height,
tree girth at breast height (GBH), canopy index, regeneration class and recruitment class, together with physico-chemical
characteristics of water and sediment and the textural aspects of sediments. Reflecting the hot, arid hinterland of Gujarat,
ambient temperatures and salinities are high in this macrotidal estuary, decreasing somewhat during the monsoon. The littoral
soil supporting the mangrove is abundant in silty loam, silty clay and slity clay loam. The density of mature trees (Mangrove
plants of GBH > 25 cm) ranged from 2088/ha to 3011/ha, the height of the trees ranged from 1.42 m to 9 m and the maximum mean
GBH at all three sites was 33 cm, and the mean canopy indices ranged between 4.77 m2 and 10.45 m2. The maximum density of regeneration stages was 100,800/ha while that of recruitment stages was only 3,040/ha. While quite
severely impacted by anthropic exploitation at one site, the mangrove ecosystem of Gulf of Kachchh was found to be mainly
healthy and supporting associated organisms. The ecological and social role of the mangrove, and the potential for its future
conservation are briefly discussed in the light of current legislation. 相似文献
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