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Open AccessArticle

How to Assess the Ecological Status of Highly Humic Lakes? Development of a New Method Based on Benthic Invertebrates

1
Laboratory of Hydrobiology, Institute of Biology, University of Latvia, Jelgavas 1, LV-1004 Riga, Latvia
2
Statistics Unit, Riga Stradiņš University, Baložu 14, LV-1048 Riga, Latvia
3
Institute of Food Safety, Animal Health and Environment BIOR, Lejupes 3, LV-1076 Riga, Latvia
4
European Commission, Joint Research Centre, 21027 Ispra, Italy
*
Authors to whom correspondence should be addressed.
Water 2021, 13(2), 223; https://doi.org/10.3390/w13020223
Received: 7 December 2020 / Revised: 13 January 2021 / Accepted: 14 January 2021 / Published: 18 January 2021
(This article belongs to the Special Issue Freshwater Macroinvertebrates: Main Gaps and Future Trends)
Highly humic lakes are typical for the boreal zone. These unique ecosystems are characterised as relatively undisturbed habitats with brown water, high acidity, low nutrient content and lack of macrophytes. Current lake assessment methods are not appropriate for ecological assessment of highly humic lakes because of their unique properties and differing human pressures acting on these ecosystems. This study proposes a new approach suitable for the ecological status assessment of highly humic lakes impacted by hydrological modifications. Altogether, 52 macroinvertebrate samples from 15 raised bog lakes were used to develop the method. The studied lakes are located in the raised bogs at the central and eastern parts of Latvia. Altered water level was found as the main threat to the humic lake habitats since no other pressures were established. A multimetric index based on macroinvertebrate abundance, littoral and profundal preferences, Coleoptera taxa richness and the Biological Monitoring Working Party (BMWP) Score is suggested as the most suitable tool to assess the ecological quality of the highly humic lakes. View Full-Text
Keywords: highly humic lakes; macroinvertebrates; ecological status assessment highly humic lakes; macroinvertebrates; ecological status assessment
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MDPI and ACS Style

Ozoliņš, D.; Skuja, A.; Jēkabsone, J.; Kokorite, I.; Avotins, A.; Poikane, S. How to Assess the Ecological Status of Highly Humic Lakes? Development of a New Method Based on Benthic Invertebrates. Water 2021, 13, 223. https://doi.org/10.3390/w13020223

AMA Style

Ozoliņš D, Skuja A, Jēkabsone J, Kokorite I, Avotins A, Poikane S. How to Assess the Ecological Status of Highly Humic Lakes? Development of a New Method Based on Benthic Invertebrates. Water. 2021; 13(2):223. https://doi.org/10.3390/w13020223

Chicago/Turabian Style

Ozoliņš, Dāvis; Skuja, Agnija; Jēkabsone, Jolanta; Kokorite, Ilga; Avotins, Andris; Poikane, Sandra. 2021. "How to Assess the Ecological Status of Highly Humic Lakes? Development of a New Method Based on Benthic Invertebrates" Water 13, no. 2: 223. https://doi.org/10.3390/w13020223

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