A1 Journal article (refereed)
Lake browning impacts community structure and essential fatty acid content of littoral invertebrates in boreal lakes (2022)

Kesti, P., Hiltunen, M., Strandberg, U., Vesterinen, J., Taipale, S., & Kankaala, P. (2022). Lake browning impacts community structure and essential fatty acid content of littoral invertebrates in boreal lakes. Hydrobiologia, 849(4), 967-984. https://doi.org/10.1007/s10750-021-04760-1

JYU authors or editors

Publication details

All authors or editors: Kesti, Petri; Hiltunen, Minna; Strandberg, Ursula; Vesterinen, Jussi; Taipale, Sami; Kankaala, Paula

Journal or series: Hydrobiologia

ISSN: 0018-8158

eISSN: 1573-5117

Publication year: 2022

Publication date: 22/11/2021

Volume: 849

Issue number: 4

Pages range: 967-984

Publisher: Springer

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1007/s10750-021-04760-1

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/78821

Abstract

Many lakes in the northern hemisphere are browning due to increasing concentrations of terrestrial dissolved organic carbon (DOC). The consequences of lake browning to littoral invertebrates, however, are not fully understood. We analyzed community structure and fatty acid (FA) profiles of littoral invertebrates in humic (DOC-rich) and clear-water lakes in Eastern Finland. We found higher abundance of chironomids (Diptera: Chironomidae) in humic compared to clear-water lakes, whereas stoneflies (Plecoptera) and mayflies (Ephemeroptera: Baetidae) were more abundant in clear-water lakes. Taxon explained 65% of the differences in the FA composition of littoral invertebrates. However, the proportion and content of polyunsaturated FAs of several taxa were significantly higher in clear-water lakes compared to humic lakes. Our results reveal differences in both community structure and nutritional quality of littoral invertebrates for fish between humic and clear-water lakes.

Keywords: lakes; dissolved organic carbon; organic material; zoobenthos; biotic communities; invertebrates; Isopoda; Chironomidae; nutrients (animals and humans); fatty acids

Free keywords: polyunsaturated fatty acids; benthic invertebrates; terrestrial organic matter; Asellus aquaticus; Chironomidae

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 1