Draft - WAMSI 2 - Dredging Node - 5.3 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Experiment 1

Project 5.3 will address three of the tasks required in the Dredging Science Node Science Plan (tasks 5.3, 5.4 and 5.5).

Objectives of Project 5.3 are to:
(1) determining the pressure:response relationships that relate the effects of dredging-generated sediments on tropical primary producers,
(2) examine the pathways, rates and timeframes of recovery from impacts and;
(3) identify and examine the effects of key environmental variables on the pressure:response relationships and recovery.

Specifically *Experiment 1* will be studying "Effect of different intensity, duration & timing of light reductions on seagrasses (Laboratory)"

项目5.3将承接疏浚科学节点（Dredging Science Node）科学规划中规定的三项任务，即任务5.3、5.4与5.5。
本项目5.3的目标如下：
(1) 明确疏浚沉积物对热带初级生产者的影响所对应的压力-响应关系；
(2) 探究受扰动后的恢复路径、恢复速率与恢复时间框架；
(3) 识别并分析关键环境变量对压力-响应关系及恢复过程的影响。
具体而言，**实验1**将开展“不同强度、持续时长与时机的光照降低对海草的影响（实验室研究）”。