Wavelength-dependent effects of artificial light at night on phytoplankton growth and community structure

Diamantopoulou, C., Christoforou, E., Dominoni, D. M. , Kaiserli, E. , Czyzewski, J., Mirzai, N. and Spatharis, S. (2021) Wavelength-dependent effects of artificial light at night on phytoplankton growth and community structure. Proceedings of the Royal Society B: Biological Sciences, 288(1953), 20210525. (doi: 10.1098/rspb.2021.0525) (PMID:34157871)

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Abstract

Artificial light at night (ALAN) is a disruptive form of pollution, impacting physiological and behavioural processes that may scale up to population and community levels. Evidence from terrestrial habitats show that the severity and type of impact depend on the wavelength and intensity of ALAN; however, research on marine organisms is still limited. Here, we experimentally investigated the effect of different ALAN colours on marine primary producers. We tested the effect of green (525 nm), red (624 nm) and broad-spectrum white LED ALAN, compared to a dark control, on the green microalgae Tetraselmis suesica and a diatom assemblage. We show that green ALAN boosted chlorophyll production and abundance in T. suesica. All ALAN wavelengths affected assemblage biomass and diversity, with red and green ALAN having the strongest effects, leading to higher overall abundance and selective dominance of specific diatom species, some known to cause harmful algal blooms. Our findings show that green and red ALAN should be used with caution as alternative LED colours in coastal areas, where there might be a need to strike a balance between the effects of green and red light on marine primary producers with the benefit they appear to bring to other organisms.

Item Type:Articles
Additional Information:This work was funded by the A.G. Leventis Foundation and Nissad Development Company (sponsors had no further involvement in the research).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Mirzai, Mr Nosrat and Czyzewski, Mr Jakub and Dominoni, Dr Davide and Christoforou, Miss Eleni and Spatharis, Dr Sofie and Kaiserli, Dr Eirini and Diamantopoulou, Ms Christina
Creator Roles:
Diamantopoulou, C.Conceptualization, Investigation, Methodology, Visualization, Writing – original draft
Christoforou, E.Conceptualization, Funding acquisition, Investigation, Methodology, Visualization, Writing – review and editing
Dominoni, D. M.Conceptualization, Investigation, Methodology, Resources, Writing – review and editing
Kaiserli, E.Conceptualization, Resources, Writing – review and editing
Czyzewski, J.Methodology, Writing – review and editing
Mirzai, N.Methodology, Writing – review and editing
Spatharis, S.Conceptualization, Formal analysis, Investigation, Methodology, Resources, Supervision, Visualization, Writing – review and editing
Authors: Diamantopoulou, C., Christoforou, E., Dominoni, D. M., Kaiserli, E., Czyzewski, J., Mirzai, N., and Spatharis, S.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
College of Medical Veterinary and Life Sciences > School of Life Sciences
Journal Name:Proceedings of the Royal Society B: Biological Sciences
Publisher:Royal Society
ISSN:0962-8452
ISSN (Online):1471-2954
Published Online:23 June 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Proceedings of the Royal Society B: Biological Sciences 288(1953):20210525
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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