Microplastics promote the invasiveness of invasive alien species under fluctuating water regime

Microplastic pollution and alien plant invasions are two important threats to terrestrial ecosystems. Microplastics (MPs) alter the physical and chemical characteristics of soil,  potentially affecting the performance of alien plants. However, previous studies have overlooked the impact of weather on invasive plants in areas polluted by MPs. With the global increase in extreme rainfall events, it is imperative to redefine the correlation between MPs and invasive plants. Here, we conducted an experiment in a climate chamber to examine the effects of MPs on the growth and development of both native and invasive alien plants under a constant and fluctuating water regime (FWR). The FWR simulated extreme water pulses during the 2016-2020 growing seasons in Wuhan, China. Our results indicated that biomass accumulation and roots development were influenced by water conditions and MPs pollution in both invasive and native species. The extent of the effects varied between the two groups of plant..., , , # Microplastics and invasive species under fluctuating water regime: Open Source Data

We have submitted our raw data of native or invasive plant biomass (**Biomass_MP.csv**), fine roots of native or invasive plants (**Fineroot_MP.csv**), chlorophyll fluorescence of native or invasive plants (**Fluorescence_MP.csv**), and R script (**MP_Code.R**).

## Descriptions

### **Biomass\_MP**

* *origin*: Native or alien invasive plants
* *water*: A treatment for watering plants, including constant and fluctuant water
* *MP*: Microplastics treatment, including microplastics with and microplastics without
* *MP_type*: The type of microplastics
* Dg_PBS = degradable microplastics polybutylene succinate (PBS)
* unDg_PP = nondegradable microplastics polypropylene (PP)
* blank_control = microplastics without
* *size*: The size of microplastics (small or large and ck)
* *spp*: Species abbreviation
* *species*/*genus*/*family*: Species, Genus and Family of plants
* *replicates*: Serial number of...

微塑料污染与外来植物入侵是陆地生态系统面临的两大重要威胁。微塑料（microplastics, MPs）可改变土壤的物理与化学性质，进而可能影响外来植物的生长表现。然而，既往研究尚未关注天气条件对微塑料污染区域入侵植物的影响。随着全球极端降雨事件频发，重新厘清微塑料与入侵植物间的关联已迫在眉睫。

本研究于人工气候箱内开展实验，旨在探究恒定与波动水分条件（fluctuating water regime, FWR）下，微塑料对本土植物与入侵外来植物生长发育的影响。该波动水分条件模拟了中国武汉2016-2020年生长季的极端水分脉冲事件。研究结果显示，入侵植物与本土植物的生物量积累及根系发育均受水分条件与微塑料污染的影响，两类植物的响应程度存在差异……# 波动水分条件下的微塑料与入侵物种：开源数据集

本研究已上传本土/入侵植物生物量（**Biomass_MP.csv**）、本土/入侵植物细根（**Fineroot_MP.csv**）、本土/入侵植物叶绿素荧光参数（**Fluorescence_MP.csv**）的原始数据，以及R脚本（**MP_Code.R**）。

## 数据说明
### **Biomass_MP**
* 样本来源：本土或外来入侵植物
* 水分处理：包含恒定水分与波动水分两种处理方式
* 微塑料处理：设置添加微塑料与不添加微塑料两组处理
* 微塑料类型：
* Dg_PBS：可降解聚丁二酸丁二醇酯（polybutylene succinate, PBS）微塑料
* unDg_PP：不可降解聚丙烯（polypropylene, PP）微塑料
* blank_control：无微塑料空白对照
* 微塑料粒径：分为小粒径、大粒径与空白对照组
* 物种缩写：植物物种的缩写代号
* 种/属/科：植物的种、属、科分类信息
* 重复组序列号：……