Calm conditions and extensive fishing, during monsoon season in the mudbank off Alleppey (Kerala), India creates a unique environment, associated with high suspended particulate matter. The effect of processes associated with mudbank formation, on benthic foraminifera, however, has not been documented. We have studied, seasonal foraminiferal distribution, to understand foraminiferal response to physico-chemical changes associated with the mudbank formation. Additionally, seasonal changes in total carbon, calcium carbonate (CaCO₃), organic carbon (C_org) and C_org/nitrogen (C_org/N) were also measured to understand the effect of mudbank formation on carbon burial. We report a low foraminiferal abundance in the mudbank. Benthic foraminiferal diversity is also low in the mudbank, during both pre-monsoon and monsoon season, clearly suggesting a stressed environment. Agglutinated foraminifera dominate the living benthic foraminiferal population in the mudbank, suggesting that the area is carbonate undersaturated and under fresh-water influence. Ammobaculites dilatatus and Ammobaculites exiguus are the dominant agglutinated species abundant in the mudbank and thus can be used to reconstruct past changes in the mudbank. The CaCO₃ is consistently low during all seasons, at one of the core mudbank stations. The %C_org is, however, higher in the core mudbank as well as the northern peripheral region. The C_org/N is consistently uniform at all the stations indicating a similar source of organic matter in all the seasons. The higher %C_org and constant C_org/N suggest, that food availability and its source is not a major factor affecting benthic foraminifera in the mudbank. Instead, increased turbidity and low bottom water salinity are the main cause of seasonally stressed environment in the mudbank. Additionally, C_org degradation coupled with fresh water influx induced drop in bottom water pH is responsible for low foraminiferal population in mudbank region, in all the seasons. The reduced calcareous benthic foraminiferal abundance, however, does not affect the carbon burial in the mudbank, due to higher %C_org.

在季风季节，印度阿勒皮（喀拉拉邦）对开的泥滩，平静的条件和大量的捕捞创造了独特的环境，与高悬浮颗粒物有关。但是，尚未记录与底泥有孔虫形成的泥滩有关的过程的影响。我们研究了季节性有孔虫的分布，以了解有孔虫对与泥岸形成有关的物理化学变化的响应。此外，总碳，碳酸钙（CaCO ₃），有机碳（C _org）和C _org /氮（C _org）的季节性变化/ N）也被测量以了解泥浆形成对碳埋藏的影响。我们报告泥浆中有孔​​虫的丰度较低。在季风前和季风季节，泥滩底栖有孔虫的多样性也很低，这显然表明环境压力很大。凝结的有孔虫在泥浆库中的活底栖有孔虫种群中占主导地位，这表明该地区是碳酸盐饱和度低且受淡水影响的地区。膨胀的弹孔虫和稀有的弹孔虫是泥浆库中丰富的主要凝集物种，因此可用于重建泥浆库的过去变化。在所有季节中，核心泥浆站之一的CaCO ₃始终较低。％C_组织但是，在核心泥浆区和北部外围地区，该比例较高。在所有站点上，C _org / N始终一致，表明在所有季节中有机物的来源相似。较高的％C _org和恒定的C _org / N表明，食物的可获得性及其来源不是影响泥滩底栖有孔虫的主要因素。取而代之的是，浊度增加和底水盐度降低是泥浆池中季节性应力环境的主要原因。此外，C _org退化加上淡水涌入导致底水pH下降是所有季节泥浆区有孔虫种群减少的原因。但是，由于％C _org较高，钙质底栖有孔虫数量的减少不会影响泥浆中的碳埋藏。