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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 | Recombinant human DNase I reduces the viscosity of cystic fibrosis sputum显示文摘 | Shak S Capon DJ Hellmiss R | 1990 | Proc Natl Acad Sci USA1990，87，23： | 1 |
| 3 | Human resource competitiveness and inflow of foreign investment to the ASEAN region 显示文摘 | Shak Yussof Rahmah Ismail | 2002 | Asia-Pacific Development Journal2002，9，1： | 1 |
| 4 | Use of chemotherapy plus a monoclonal antibody against HER2 for metastatic breast cancer that overexpresses HER2显示文摘 | Slamon DJ Leyland-Jones B Shak S | 2001 | N Engl J Med2001，344，11： | 1 |
| 5 | Use of chemotherapy plus a monoclonal antibody against I-IER2 for meta- static breast cancer that overexpresses HER2 显示文摘 | SLAMON D J LEYLAND JONES B SHAK S | 2001 | N Engl J Med2001，344，11： | 1 |
| 6 | A multigene assay to predict recur- rence of tamoxifen - treated, node - rlegative breast cancer 显示文摘 | Paik S Shak S Tang G | 2004 | N Engl J Med2004，351，27： | 1 |
| 7 | Gene expression and benefit ofchemotherapy in women with node-negative, estrogen receptor-positive breast cancer 显示文摘 | Paik S Tang G Shak S | 2006 | J Clin Oncol2006，24，23： | 1 |
| 8 | The rapeutic biliary endoscopy显示文摘 | Shak SK Mutignani M Costamagna G | 2002 | Endoscopy2002，34，1： | 1 |
| 9 | Use of chemotherapy plus a monoclonal antibody against HER2 for metastatic breast cancer that over expresses HER2 显示文摘 | Slamon DJ Leyland Jones B Shak S | 2001 | Englned2001，，： | 1 |
| 10 | Use of chemotherapy plus a monoclonal antibody against HER2 for metastatic breast cancer that overexpresses HER2显示文摘 | Slamon DJ Leyland-Jones B Shak S | 2001 | N Engl J Med2001，，： | 1 |
| 11 | Gene expression and benefit of chem- otherapy in women with node - negative, estrogen receptor - posi- tive breast cancer显示文摘 | Paik S Tang G Shak S | 2006 | J C lin Onco12006，24，23： | 1 |
| 12 | Prognostic and predictive value of the 21-gene recurrence score assay in postmenopausal women with nodepositive, oestrogen- receptor-positive breast cancer on chemotherapy: a retrospective analysis of a randomised trial显示文摘 | Albain KS Barlow WE Shak S | 2010 | Lancet Oncol2010，11，1： | 1 |
| 13 | Prognostic andpredictive value of the 21-gene recurrence score assay inpostmenopausal women with node-positive, oestrogen-receptor-positive breast cancer on chemotherapy : a retrospective analysisof a randomised trial显示文摘 | Albain KS Barlow WE Shak S | 2010 | Lancet Oncol2010，11，1： | 1 |
| 14 | Addition of herceptin (humanized anti-HER2 antibody ) to tirst line chemotherapy for HEP,2 overexpressing metastatic breast cancer ( HER2 +/MBC ) markedly increases anticancer activity: a randomized multinational controlled phase Ⅲ trial 显示文摘 | Slamon D Leyland-Jones B Shak S | 1998 | Proc Am Soc Clin Oncol1998，377，17： | 1 |
| 15 | Use of chemotherapy plus a monoclonal antibody against HER2 for metastatic breast cancer that overexpresses HER2显示文摘 | Slamon DJ Leyland-Jones B Shak S | 2001 | N Engl J Med2001，344，11： | 1 |
| 16 | Addition of Herceptin to first line chemotherapy for Her- 2 overexpressing metastatic breast cancer (Her-2 +/MBC) markedly increases anti cancer activity:a randomized multinational controlled phase Ⅲ trial 显示文摘 | Slamon D Leyland-Jones B Shak S | 1998 | Proceedings ASCO1998，，： | 1 |
| 17 | Use of chemotherapy plus a monoelonal antibody against HER2 for metastatic breast cancer that overexpreases HER2显示文摘 | Slamon DJ Leyland-Jones B Shak S | | 0，，11： | 1 |
| 18 | A multigene assay to predict recur- rence of tamoxifen treated, node negative breast cancer 显示文摘 | Paik S Shak S Tang G | 2004 | N Engl J Med2004，351，： | 1 |
| 19 | A multigen assay to predict recurrence of tamoxifen-treated,node-negative breast cancer显示文摘 | Paik S Shak S Tang G | 2004 | N Engl J Med2004，351，27： | 1 |
| 20 | Surgical treatment of talus fractures 显示文摘 | Shakked RJ Tejwani NC | 2013 | Orthop Clin North Am2013，44，4： | 1 |
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