The effect of temperature changes and K supply on the reproduction and growth of Bolboschoenus planiculmis
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Date
2021-04
Publication Type
Journal Article
ETH Bibliography
yes
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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.
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Publication status
published
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Editor
Book title
Journal / series
Volume
14 (2)
Pages / Article No.
337 - 347
Publisher
Oxford University Press
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
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
Organisational unit
03648 - Buchmann, Nina / Buchmann, Nina
Notes
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.