Annual productivity in control plots at a Spartina alterniflora-dominated salt marsh at Law's Point, Rowley River, Plum Island Ecosystem, MA.

Annual productivity is determined from aboveground biomass data at permanent, high marsh, plots in a Spartina alterniflora-dominated salt marsh on the Rowley River within the Plum Island Ecosystem (PIE) LTER site, MA.本数据集的年生产力，基于美国马萨诸塞州普拉姆岛生态系统（PIE）长期生态研究站点内罗利河沿岸以互花米草（Spartina alterniflora）为优势种的盐沼中的永久高潮盐沼样地的地上生物量数据计算得出。