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Both climate trends and short-term fluctuations affected algae-zooplankton interactions in a boreal lake during the late Holocene

Belle, Simon and Tonno, Ilmar and Vrede, Tobias and Freiberg, Rene and Nilsson, Jenny and Goedkoop, Willem (2021). Both climate trends and short-term fluctuations affected algae-zooplankton interactions in a boreal lake during the late Holocene. Freshwater Biology. 66 , 2076-2085
[Research article]

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Abstract

Most studies aiming to explore the response of algae and zooplankton trophic interactions to climate variability have only been focused on unidirectional and very short-term trends in temperature changes. As a result, the non-stationary aspect of climate change (warming and cooling periods, frequencies) remains completely unstudied. We studied elemental and stable isotope composition of sedimentary organic matter, photosynthetic pigments, and carbon stable isotope composition of Cladocera resting eggs in a sediment record covering the last c. 2,600 years. We examined how past climate change acting at different timescales affected algal biomass and community composition, and carbon assimilation by zooplankton in a boreal lake. Our study revealed major effects of both long-term climate trends and shorter-term fluctuations on algae-zooplankton interactions in a boreal lake. We found the main climate trends, in particular the Little Ice Age, induced algal biomass and community composition changes and drastic changes in carbon assimilation by zooplankton. Interestingly, we found that temperature fluctuations could also contribute to regulating algae-zooplankton interactions. Specifically, we observed drastic changes in sedimentary markers and stable isotope composition of zooplankton remains during the most recent period, suggesting a strong influence of ongoing anthropogenic change on algae-zooplankton interactions. Our study confirms previous findings showing close long-term linkage between the temporal dynamics of zooplankton diet and planktonic algae, and that both climate trends and short-term fluctuations are key in regulating consumer-resource trophic interactions. Novel approaches that combine high temporal resolution paleolimnological reconstructions and contemporary monitoring studies are needed to better understand climate change effects on algae-zooplankton interactions and lake food webs.

Authors/Creators:Belle, Simon and Tonno, Ilmar and Vrede, Tobias and Freiberg, Rene and Nilsson, Jenny and Goedkoop, Willem
Title:Both climate trends and short-term fluctuations affected algae-zooplankton interactions in a boreal lake during the late Holocene
Series Name/Journal:Freshwater Biology
Year of publishing :2021
Volume:66
Page range:2076-2085
Number of Pages:10
Publisher:WILEY
ISSN:0046-5070
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:algal pigments, aquatic food webs, carbon stable isotope, paleolimnology, subfossil cladocera
URN:NBN:urn:nbn:se:slu:epsilon-p-113504
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113504
Additional ID:
Type of IDID
DOI10.1111/fwb.13815
Web of Science (WoS)000690713000001
ID Code:25942
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:25 Oct 2021 08:25
Metadata Last Modified:25 Oct 2021 08:31

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