The effect of temperature changes and K supply on the reproduction and growth of Bolboschoenus planiculmis. (30th November 2020)

• Record Type: Journal Article
• Authors: Liu, Ying; Bachofen, Christoph; Lou, Yanjing; Ding, Zhi; Jiang, Ming; Lü, Xianguo; Buchmann, Nina
• Editors: Hui, Dafeng
• Is Part Of: Journal of plant ecology. Volume 14:Number 2(2021)
• Page Start: 337
• Page End: 347
• Publication Date: 2020-11-30
• Subjects: climate warming -- non-point source pollution -- functional traits -- clonal reproduction -- wetland plants -- marsh; 气候变暖 -- 面源污染 -- 功能性状 -- 克隆繁殖 -- 湿地植物 -- 沼泽; Plant ecology -- Periodicals; Phytogeography -- Periodicals; 581.705
• DOI: 10.1093/jpe/rtaa091
• Languages: English
• ISSNs: 1752-9921

Abstract

Abstract: Aims: Climate warming and agricultural non-point source pollution both resulting from anthropogenic activities have been projected to affect plant reproduction and growth in wetlands worldwide. In order to predict and mitigate impacts of these anthropogenic activities, it is important to investigate how marsh plants respond to such environmental changes. Methods: In this study, Bolboschoenus planiculmis, a tuberous sedge with a wide distribution range in Eurasia, was selected to examine the effect of air temperature changes (15, 20 and 25 °C over 24 h; 20/10 and 30/15 °C, day/night) and K supply (0, 1, 3, 9 and 18 mmol/L) on its reproductive and growth traits in climate chambers. Important Findings: We found that high constant temperatures (20 and 25 °C) were more beneficial for tuberization of B. planiculmis than high alternating temperatures (30/15 °C), whereas aboveground biomass and shoot height were generally largest at high temperatures (30/15 and 25 °C). Both reproductive and growth traits of B. planiculmis showed hump-shaped relationships with K supply, with an optimum K concentration of around 1–3 mmol/L. The combination of high constant temperatures and optimal K concentrations promoted reproductive traits the most, whereas the combination of higher temperatures (30/15 and 25 °C) and K concentrations up to 9 mmol/L increased growth traits only. We therefore conclude that population abundance of B. planiculmis might benefit from global warming and the additional K supply.