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Eti Ester Levi

Responses of submerged macrophytes and periphyton to warming under two nitrogen scenarios: A microcosm study

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  • Yang Liu, Chinese Academy of Sciences, University of Chinese Academy of Sciences
  • ,
  • Celina Aznarez, CURE - University of the Republic, BC3 Basque Centre for Climate Change
  • ,
  • Erik Jeppesen
  • Hu He, CAS - Nanjing Institute of Geography and Limnology
  • ,
  • Wei Li, Chinese Academy of Sciences, University of Chinese Academy of Sciences
  • ,
  • Eti E. Levi
  • Juan Pablo Pacheco
  • Yu Cao, University of Chinese Academy of Sciences, CURE - University of the Republic, Aarhus Universitet, Sino-Danish Centre for Education and Research

Warming and higher nitrogen loading induced by increasing precipitation are expected scenarios in north temperate regions as consequence of global climate change, with potential effects on the functional traits of submerged macrophytes and periphyton. Using an experimental heating facility we investigated the responses of three-week growth of two submerged macrophytes (Potamogeton crispus Linn. and Elodea canadensis Michx.), and periphyton on these plants and their artificial mimics. Analysis was based on IPCC climate scenarios A2 (ca. + 3°C) and A2 + 50% (called A3 in our study) relative to ambient conditions, across warming in spring and early summer (summer showed higher nitrogen loading). Some functional traits of plants showed species-specific responses to warming: A3 promoted the growth of E. canadensis in both seasons, while for P. crispus warming reduced the leaf number in spring but enhanced the turion production in early summer. Periphyton biomass was lower in A3 in early summer, but not in spring. Our results further show that the growth of E. canadensis and the asexual reproduction of P. crispus might increase in a warmer future. Moreover, we found a complex response of periphyton to the temperature increase and substrate type, varying with season and nutrient state.

Sider (fra-til)1333-1346
Antal sider14
StatusUdgivet - mar. 2021

Bibliografisk note

Funding Information:
This study was supported by National Natural Science Foundation of China (31670368 and 31870345). E.J. was supported by the TÜBITAK BIDEB 2232 program (Project 118C250).

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature.

Copyright 2021 Elsevier B.V., All rights reserved.

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