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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.32 [2003] >
IJMS Vol.32(1) [March 2003] >
| Title: | The effect of sea brine and bittern on survival and growth of mangrove Avicennia marina (Dicotyledones : Avicenniaceae) |
| Authors: | Tewari, A.
Joshi, H. V.
Raghunathan, C.
Trivedi, R. H.
Ghosh, P. K. |
| Keywords: | Brine
bittern
Avicennia
mangrove
pollution
salt tolerance |
| Issue Date: | Mar-2003 |
| Publisher: | CSIR |
| Abstract: | The effect of 25.5°B e brine and 28.5°Be bittern prepared from 3.5°Be seawater was studied on the juvenile plants of the mangrove Avicennia marina (Forsk.) Vierh under greenhouse conditions. The maximum in elongation growth and percentage increase in number of leaves in 5 % concentration of brine was 35.0 mm and 200 % respectively. However for 5 % bittern they were 33.0 mm and 160 % respectively. The 50 % concentrations of brine and bittern were growth inhibitory while 100 % concentration was lethal during 8 hours continuous exposure for 10 days. The highest growth of the Avicennia marina was observed when brine and bittern were diluted between 20 and 200 times. The undiluted and 50 % diluted brine and bittern were lethal and growth inhibitory, respectively. The leaves were the best indicator of the inhibitory or lethal effects on the plants. The 1 to 5 % brine promoted the growth of the leaves while other concentrations were inhibitory or lethal. However, the bittern in the range of 9 ml l-1 and 1 to 50 % were growth inhibitory for leaves, while 100 % was lethal. The results indicate that discharge of brine and bittern in the marine environment, having semi diurnal tide cycle, will not be toxic or lethal to the plants. |
| Page(s): | 52-56 |
| ISSN: | 0379-5136 |
| Source: | IJMS Vol.32(1) [March 2003]
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