Macroinvertebrate and environmental responses to dredging and submerged macrophytes transplantation

Eutrophication of freshwater ecosystems is a major global problem, but restoration can be difficult due to ongoing problems relating to water pollution, sedimentary nutrient stores, and altered aquatic biodiversity. Mitigation of water quality stressors is often conducted alongside transplantation of submerged macrophytes and dredging, but knowledge of ecosystem response to post-dredging transplantation of submerged macrophytes is limited. 
Here, we report a long-term (2008-2018) in-situ monitoring study to evaluate the effects of two different restoration measures: dredging only (Dredged) and dredging with post-dredging transplantation of submerged macrophytes (Dredged with macrophytes) conducted in five subtropical eutrophic lakes in Lake Taihu basin, China. Water and sediment nutrients, bloom-forming algae Microcystis, and macroinvertebrate were monitored every two years for each treatment and compared with reference areas (Control) established in unrestored parts of the same lakes. ..., , , # Macroinvertebrate and environmental responses to dredging and submerged macrophytes transplantation

## Description of the data and file structure

All the monitoring indices of water and sediment nutrients, *Microcystis* were included in \"**Environment_indices.csv**\" file; biomass of each benthic macroinvertebrate species was included in \"**Invertebrates_data.csv**\" file. Each row means biomass of macroinvertebrate, macroinvertebrate biomass (wet mass) was expressed by reference to the sediment area sampled (mg/m2). NAs in the dataset means no macroinvertebrte were found in the samples, for other indices NAs means the value is missing or too low that not detected out.

Abbreviations used in the dataset: total carbon (TC), total nitrogen (TN), total phosphorus (TP), nitrate nitrogen (NO3-N), ammonia nitrogen (NH3-N), orthophosphate (PO4.P), chemical oxygen demand (COD), exchangeable phosphorus (Ex.P), aluminum-bound phosphorus (Al.P), iron-bound phosphorus (Fe.P), occluded inorgani...

淡水生态系统富营养化是全球性重大环境问题，但由于水污染、沉积物营养库留存以及水生生物多样性改变等持续存在的问题，生态修复往往难以推进。针对水质胁迫因子的治理常与沉水植物移植和疏浚作业同步开展，但目前学界对疏浚后沉水植物移植的生态系统响应机制仍缺乏足够认知。

本研究针对中国太湖流域的5个亚热带富营养化湖泊，开展了为期10年（2008-2018年）的原位监测试验，以评估两种不同修复措施的效果：仅疏浚组（仅疏浚）以及疏浚后同步开展沉水植物移植组（疏浚+植草）。研究每两年对各处理组的水体与沉积物营养盐、水华藻类微囊藻（Microcystis）以及大型底栖无脊椎动物进行监测，并与同一湖泊未修复区域设置的对照区域（对照组）进行对比。…… # 疏浚与沉水植物移植对大型底栖无脊椎动物及环境因子的影响

## 数据与文件结构说明

本数据集的水体与沉积物营养盐、微囊藻（Microcystis）等监测指标均收纳于"Environment_indices.csv"文件中；各底栖大型无脊椎动物物种的生物量数据则存储于"Invertebrates_data.csv"文件内。数据集中每一行对应一种大型底栖无脊椎动物的生物量，其生物量（湿重）以采样沉积物面积为基准进行标准化，单位为mg/m²。数据集中的NA值代表样本中未采集到大型底栖无脊椎动物，其余指标的NA值则表示该指标数据缺失或浓度过低未被检出。

本数据集所用缩写如下：总碳（TC）、总氮（TN）、总磷（TP）、硝态氮（NO3-N）、氨态氮（NH3-N）、正磷酸盐（PO4.P）、化学需氧量（COD）、交换态磷（Ex.P）、铝结合态磷（Al.P）、铁结合态磷（Fe.P）、闭蓄态无机……