Preprints
https://doi.org/10.5194/egusphere-2023-1679
https://doi.org/10.5194/egusphere-2023-1679
25 Sep 2023
 | 25 Sep 2023

Timing of spring events changes under modelled future climate scenarios in a mesotrophic lake

Jorrit P. Mesman, Inmaculada C. Jiménez-Navarro, Ana I. Ayala, Javier Senent-Aparicio, Dennis Trolle, and Don Pierson

Abstract. Lakes experience shifts in the timing of processes as a result of climate warming, and especially relative changes in the timing of events may have important ecological consequences. Spring in particular is a period in which many key processes that regulate the ecology and biogeochemistry of lakes occur, and also a time which may experience significant changes under influence of global warming. In this study, we used a coupled catchment-lake model forced by future climate projections to evaluate changes in the timing of spring discharge, ice-off, the spring phytoplankton peak, and the onset of stratification, in a mesotrophic, temperate lake. All these events showed a clear trend towards earlier occurrence with climate warming, with ice cover tending to disappear at the end of the century in the most extreme climate scenario. Moreover, relative shifts in the timing of these springtime events also occurred, with the onset of stratification tending to advance slower than the other events, and the spring phytoplankton peak and ice-off advancing faster in the most extreme climate scenario. The outcomes of this study stress the impact of climate change on the phenology of processes in lakes and especially the relative shifts in timing during spring. This can have profound effects on food-web dynamics as well as other regulatory processes, and influence the lake for the remainder of the growing season.

Jorrit P. Mesman et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-1679', Anonymous Referee #1, 31 Oct 2023
    • AC1: 'Reply on RC1', Jorrit Mesman, 08 Dec 2023
  • RC2: 'Comment on egusphere-2023-1679', Xiangzhen Kong, 03 Nov 2023
    • AC2: 'Reply on RC2', Jorrit Mesman, 08 Dec 2023
  • RC3: 'Comment on egusphere-2023-1679', Love Raman Vinna, 06 Nov 2023
    • AC3: 'Reply on RC3', Jorrit Mesman, 08 Dec 2023

Jorrit P. Mesman et al.

Jorrit P. Mesman et al.

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Short summary
Spring events in lakes are key processes for ecosystem functioning. We used a coupled catchment-lake model to investigate future changes in the timing of spring discharge, ice-off, spring phytoplankton peak, and onset of stratification, in a mesotrophic lake. We found a clear trend towards earlier occurrence with climate warming, but also that relative shifts in the timing occurred, such as onset of stratification advancing slower than the other events.