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| 1 | Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles显示文摘Introduction:Seasonal and tidal variations in nutrient concentration and water quality were investigated in the western Sundarbans of Bangladesh during the post-monsoon,winter and monsoon seasons during 2010–2011.Methods:Water collected from the surface,middle and bottom layers at six locations of the Kholpetua-Arpangashia river system during high and low tides was analyzed for temperature,salinity,pH,dissolved oxygen(DO),total dissolved solids(TDS),electrical conductivity(EC)and dissolved nutrients(NO3–N,PO4–P,SO4 and NH3–N).Results:The study revealed that nutrient concentrations were influenced by seasonal changes.Mean nutrient levels during post-monsoon,winter and monsoon seasons,respectively,were in the following ranges:nitrate(0.06–0.40,0.06–0.46 and 0.08–0.46 mg/L);phosphate(0.09–0.18,0.05–0.42 and 0.10–0.16 mg/L);sulphate(58.71–86.14,68.68–119.01 and 78.15–136.47 mg/L)and ammonia(0.02–0.08,0.02–0.04 and 0.26–0.38 mg/L).Increased levels of PO4–P,SO4 and NH3–N and lower DO and salinity were recorded during the monsoon period.Most of the experimental sites showed higher NO3–N content during monsoon,whereas few elevated concentrations were observed during post-monsoon and winter periods.High and low tidal waters contained mean nutrient levels in the following ranges:nitrate(0.05–0.46 and 0.04–0.40 mg/L);phosphate(0.05–0.42 and 0.07–0.18 mg/L);sulphate(63.63–125.36 and 58.71–136.47 mg/L)and ammonia(0.02–0.38 and 0.02–0.37 mg/L)without following any distinct fluctuation patterns.The western part of the Sundarbans receives less freshwater input during the monsoon season than other areas of the ecosystem,which reduces the variability of nutrient levels and water quality components.Conclusions:This study provides considerable advances in understanding the seasonality of nutrient distribution with possible tidal influence.The data generated from this study will guide continuing efforts to support a sound management for coastal mangrove ecosystems. | Shak Md Bazlur Rahaman Lipton Sarder Md Sayadur Rahaman Alokesh Kumar Ghosh Sudhin Kumar Biswas SM Shahjahan Siraj Khandaker Anisul Huq Abul Farah Md Hasanuzzaman Shikder Saiful Islam | 2013 | Ecological Processes2013，2，1： | 2 |
| 2 | Delineation of prognostic biomarkers in prostate cancer显示文摘 | Dhanasekaran SM Barrrette TR Ghosh D | | 0，，： | 2 |
| 3 | Elevated toll-like receptor 4 expression and signaling in muscle from insulin-resistant subjects显示文摘 | Reyna SM Ghosh S Tantiwong P | | 0，，10： | 1 |
| 4 | Recent advances in antiretroviral drugs显示文摘 | Ghosh RK Ghosh SM Chawla S | 2011 | Expert Opin Pharmacother2011，12，1： | 1 |
| 5 | Delineation of prognostic biomarkers in prostate cancer显示文摘 | Dhanasekaran SM Barrette TR Ghosh D | | 0，，6849： | 1 |
| 6 | Current status of CETP inhibitors in the treatment of hyperlipidemia:an update显示文摘 | Ghosh RK Ghosh SM | 2012 | Curr Clin Pharmacol2012，7，2： | 1 |
| 7 | Elevated toll-like receptor 4 expression and signaling in muscle from insulin-resistant subjects 显示文摘 | ReYna SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，10： | 1 |
| 8 | Insulin resistance and adolescent girls with polycystic ovary syndrome显示文摘 | Bhattacharya SM Ghosh M | | 0，，03： | 1 |
| 9 | Insulin resistance and adolescent girls with polycystic ovary syndrome 显示文摘 | Bhattacharya SM Ghosh M | 2010 | J Pediatr Adolesc Gynecol2010，23，3： | 1 |
| 10 | Elevated toll-like receptor 4 expression and signaling in muscle from insulin-resistant subjects 显示文摘 | Reyna SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，10： | 1 |
| 11 | Delineation of prognostic biomarkers in prostate cancer显示文摘 | Dhanasekaran SM Barrette TR Ghosh D | 2001 | Nature2001，412，6849： | 1 |
| 12 | Elevated toll-like receptor4 expression and signaling in muscle from insulin-resistant subjects显示文摘 | Reyna SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，10： | 1 |
| 13 | Delineation of prognostic biomarkers in prostate cancer 显示文摘 | DHANASEKARAN SM BARRETTE TR GHOSH D | 2001 | Nature2001，412，： | 1 |
| 14 | Elevated toll-like receptor 4 expression and signaling in muscle from insulin-resistant subjects 显示文摘 | Reyna SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，10： | 1 |
| 15 | Elevated Toll-like receptor 4 expression and signaling in muscle from insulin-resistant subjects 显示文摘 | Reyn SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，： | 1 |
| 16 | Delineation of prog-nostic biomarkers in prostate cancer 显示文摘 | Dhanasekaran SM Barrette TR Ghosh D | 2001 | Nature2001，412，6849： | 1 |
| 17 | Elevated Toll-like receptor 4 expression and signaling in muscle from insulin-resistance subjects 显示文摘 | Reyna SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，10： | 1 |
| 18 | Elevated TLR4 expression and signaling in muscle from insulin resistant subjects显示文摘 | Reyna SM Ghosh S Tantiwong P | 2008 | Diabetes2008，57，10： | 1 |
| 19 | Delineation of prognostic biomarkers in prostate cancer显示文摘 | Dhanasekaran SM Barrette TR Ghosh D | 2001 | Nature2001，412，6849： | 1 |
| 20 | Delineation of prognostic biomarkers in prostate cancer显示文摘 | Dhanasekaran SM Barrette TR Ghosh D | 2001 | Nature2001，412，6849： | 1 |
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