PIE LTER water-column nutrient and particulate transects along the Parker River Estuary, Massachusetts, 1994 - 2019.

Water chemistry including nutrient concentrations for various forms of N, P, C, as well as suspended sediments and light extinction coefficients, was determined from bi-annual nutrient transects along the Plum Island Sound estuary from the Parker River Dam to the mouth of the sound. Grab samples were taken at 11 sites along a 24 km transect from the mouth of the estuary to as near the dam at the head of the estuary as poosible. These samples have generally been collected in Spring and Fall and are done in conjunction with metabolism transects measuring dissolved oxygen levels. The Spring and Fall transects correspond to the high-flow, pre-growth season and the low-flow, post-growth season, respectively.

本数据集的水质化学指标涵盖多种形态氮（N）、磷（P）、碳（C）的营养盐浓度，以及悬浮沉积物与光衰减系数，数据源自沿普拉姆岛湾（Plum Island Sound）河口从帕克河大坝（Parker River Dam）至湾口的半年度营养盐断面调查。研究沿总长24公里的断面布设11个采样点位，并在各点位采集瞬时水样，采样范围覆盖从河口湾口至尽可能贴近河口头部大坝的区域。此类样品通常于春季和秋季采集，并与测量溶解氧水平的代谢断面调查同步开展。春季与秋季的断面调查分别对应高流量的生长季前期，以及低流量的生长季后期。