Plant morphological traits and competition index comparisons of three invasive and native submerged plants

IF 1.6 3区环境科学与生态学 Q3 FISHERIES

Knowledge and Management of Aquatic Ecosystems Pub Date : 2021-01-01 DOI:10.1051/KMAE/2021012

Xiaolong Huang, Jinlei Yu, Shuailing Liu, Hongmin Xie, Hu He, Kuanyi Li

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引用次数: 2

Abstract

The submerged species Carolina fanwort (Cabomba caroliniana) has attracted considerable attention in Lake Taihu Basin (LTB), China. This species was widely used as a garden plant until 2016, when it was identified as invasive. In this study, we conducted a mesocosm experiment to compare the morphological traits, includingtotal dry mass, shoot/root (S/R) ratio, relative growth rate (RGR) and competition index log response ratio (ln RR), of C. caroliniana and two frequently co-occurring native submerged plants, water thyme (Hydrilla verticillata) and Eurasian watermilfoil (Myriophyllum spicatum). The results demonstrated that C. caroliniana did not show more advantageous traits (higher total dry mass, S/R ratio and RGR) or have a lower ln RR than H. verticillata or M. spicatum. We provide a counterexample to commonly accepted thought in which the successful invasion of invasive species may not be explained by outcompeting native plants. Other biotic or abiotic factors that determine the successful invasion of C. caroliniana must be studied further.

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三种入侵植物与本土植物的形态特征及竞争指数比较

中国太湖流域(LTB)的沉水种卡龙巴(Cabomba caroliniana)引起了广泛的关注。该物种被广泛用作园林植物，直到2016年才被确定为入侵植物。本研究通过中生态实验，比较了卡罗莱纳(C. caroliniana)与两种常见的本土淹没植物水百里香(Hydrilla verticillata)和欧亚水千叶(Myriophyllum spicatum)的总干质量、茎/根(S/R)比、相对生长率(RGR)和竞争指数对数响应比(ln RR)。结果表明，卡罗莱纳在总干质量、S/R比和RGR方面并没有表现出更高的优势性状，也没有表现出更低的ln RR。我们提供了一个反例，以推翻人们普遍接受的观点，即入侵物种的成功入侵可能不是由超越本土植物来解释的。其他生物或非生物因素，决定成功入侵卡罗莱纳南卡罗来纳州必须进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Knowledge and Management of Aquatic Ecosystems 环境科学-海洋与淡水生物学

CiteScore

3.70

自引率

5.60%

发文量

审稿时长

>12 weeks

期刊介绍： Knowledge and Management of Aquatic Ecosystems (KMAE-Bulletin Français de la Pêche et de la Pisciculture since 1928) serves as a foundation for scientific advice across the broad spectrum of management and conservation issues related to freshwater ecosystems. The journal publishes articles, short communications, reviews, comments and replies that contribute to a scientific understanding of freshwater ecosystems and the impact of human activities upon these systems. Its scope includes economic, social, and public administration studies, in so far as they are directly concerned with the management of freshwater ecosystems (e.g. European Water Framework Directive, USA Clean Water Act, Canadian Water Quality Guidelines, …) and prove of general interest to freshwater specialists. Papers on insular freshwater ecosystems and on transitional waters are welcome. KMAE is not a preferred journal for taxonomical, physiological, biological, toxicological studies, unless a clear link to ecological aspects can be established. Articles with a very descriptive content can be accepted if they are part of a broader ecological context.