Seed recruitment is a major driver of mangrove restoration globally. It is hypothesized that soil condition and channel hydrology can accelerate seedling recruitment and regeneration after a major disturbance. Species abundance, diversity indices, microbial and chemical concentrations in sand‐filled mangrove forest was studied. Eight plots measuring 487.77 m² each were established with ten transects in each plot in a random block design to investigate the effect of soil conditions on seedling growth. A total of 1,886 seedlings were counted. Seedling abundance was significantly different between red (Rizophora racemosa), white (Laguncularia racemosa), and black (Avicennia germinans) mangroves, and nypa palm (nypa fruticans). The most dominant species was black mangrove, and the least dominant species was nypa palm. Muddy soils had the most abundant species (n = 994) followed by sandy (n = 457) and semi‐muddy (435) soils. Furthermore, sandy soils had the highest species diversity (H = 0.896) followed by semi‐muddy (H = 0.876) and muddy (H = 0.583) soils. The soil metal concentration has no correlation with seed abundance and occur in the order Iron > Nitrate > Copper > Cadmium. Soil with high species diversity had high soil microbial population; however, seedling abundance was correlated with soil nutrients and not heavy metals. Small seeds are easily recruited while good soil condition plus existing hydrological connection facilitated natural seedling regeneration in the disturbed mangrove forest.

中文翻译：

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尼日利亚尼日尔三角洲鹰岛的森林砍伐和沙土填满的红树林中的天然幼苗招募和再生

种子募集是全球红树林恢复的主要驱动力。据推测，土壤状况和河道水文学可以在发生重大干扰后加速幼苗的募集和更新。研究了沙地红树林中物种的丰富度，多样性指数，微生物和化学浓度。通过随机区组设计，建立了八个样地，每个样地分别为487.77 m ^2，每个样地有十个样条，以研究土壤条件对幼苗生长的影响。共计1,886株幼苗。红色（Rizophora racemosa），白色（Laguncularia racemosa）和黑色（Avicennia Germinans）红树林和nypa棕榈（nypa palm）的幼苗丰度差异很大。nypa fruticans）。最主要的物种是黑红树林，而最不重要的物种是nypa palm。泥质土壤种类最多（n  = 994），其次是沙质土壤（n  = 457）和半泥质土壤（435）。此外，沙质土壤具有最高的物种多样性（H  = 0.896），其次是半泥泞（H  = 0.876）和泥泞（H = 0.583）土壤。土壤金属浓度与种子丰度没有关系，并以铁>硝酸盐>铜>镉的顺序发生。具有较高物种多样性的土壤具有较高的土壤微生物种群。然而，幼苗的丰度与土壤养分而不是重金属有关。小种子易于招募，而良好的土壤条件以及现有的水文联系有助于在受干扰的红树林中自然恢复幼苗。