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Sci Total Environ

Title:		Accelerated recovery of lake macroinvertebrates in the third decade since the reversal of acidification
Author(s):		Petruzelova J; Bojkova J; Sychra J; de Donnova S; Vrba J; Polaskova V; Seifert L; Sorfova V; Kopacek J;
Address:		"Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic. Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic. Electronic address: bojkova@sci.muni.cz. Institute of Hydrobiology, Biology Centre of the Czech Academy of Science, Na Sadkach 702, CZ-37005 Ceske Budejovice, Czech Republic; Faculty of Science, University of South Bohemia, Branisovska 1760, CZ-37005 Ceske Budejovice, Czech Republic. Electronic address: jaroslav.vrba@prf.jcu.cz. Bavarian Forest National Park, Freyungerstrasse 2, D-94481 Grafenau, Germany. Electronic address: linda.seifert@npv-bw.bayern.de. Institute of Hydrobiology, Biology Centre of the Czech Academy of Science, Na Sadkach 702, CZ-37005 Ceske Budejovice, Czech Republic; Faculty of Science, University of South Bohemia, Branisovska 1760, CZ-37005 Ceske Budejovice, Czech Republic. Electronic address: jkopacek@hbu.cas.cz"
Journal Title:		Sci Total Environ
Year:		2023
Volume:		20230601
Issue:
Page Number:		164553 -
DOI:		10.1016/j.scitotenv.2023.164553
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Chemical reversal from acidification has been progressing in European freshwaters since the late 1980s, responding to successful control of atmospheric pollution by acidifying emissions. However, biological recovery is often delayed after improvements in water composition. We studied macroinvertebrate recovery from acidification in eight glacial lakes in the Bohemian Forest (central Europe) between 1999 and 2019. The chemical composition of these lakes reflects a complex of environmental changes, dominated by a very steep decline in acid deposition and, currently, by elevated nutrient leaching following climate-induced tree dieback within their catchments. Temporal trends in species richness, abundance, species traits and community composition were evaluated with regard to water chemistry, littoral habitat properties and fish colonisation. The results showed accelerated recovery of macroinvertebrates following two decades of gradual improvement in water composition and slowly progressing biological rehabilitation. We observed a significant increase in macroinvertebrate species richness and abundance, coupled with distinct changes in community composition, the extent of changes varying between lakes, reflecting different littoral habitat properties (vegetated vs. stony) and water chemistry. Overall, the communities shifted toward more specialised (grazers, filterers, and phytophilous species) and acid-tolerant taxa at the expense of detritivorous, eurytopic and acid-resistant taxa. Where fish reappeared, open-water taxa declined greatly. Compositional changes were likely driven by the combined effects of water chemistry reversal, rehabilitation of habitat conditions and fish colonisation. Despite favourable trends, communities in recovering lakes still lack several biotic elements, particularly less vagile, acid-sensitive taxa and specialised herbivores known from the regional species pool. It is expected that future progress in lake recovery will be further promoted or inhibited by stochastic colonisation or disturbance events"
Keywords:		Animals *Lakes/chemistry *Environmental Monitoring/methods Ecosystem Fishes Water Hydrogen-Ion Concentration Invertebrates Acid stress Biological recovery Bohemian Forest Feeding habits Species traits;
Notes:		"MedlinePetruzelova, Jana Bojkova, Jindriska Sychra, Jan de Donnova, Selma Vrba, Jaroslav Polaskova, Vendula Seifert, Linda Sorfova, Vanda Kopacek, Jiri eng Netherlands 2023/06/04 Sci Total Environ. 2023 Sep 20; 892:164553. doi: 10.1016/j.scitotenv.2023.164553. Epub 2023 Jun 1"