Relations between the Food Spectrum of Fishes and the Composition of Zooplankton and Benthos in a Subarctic Lake

Berezina, Nadezhda A.; Litvinchuk, L. F.; Maximov, A. L.

doi:10.1134/s1995082921040052

Cited by 8 publications

(8 citation statements)

References 18 publications

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“…Benthic amphipods are the most important prey items of perch and vendace in Lake Krivoe (Berezina et al, 2018 ). There are marked seasonal differences in the foraging strategies with distinct prey switching caused by the availability of prey (Berezina et al, 2018 , 2021 ). As noted above, this dietary shift can partly explain the negative correlation between water temperature and recruitment of M .…”

Section: Discussionmentioning

confidence: 99%

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Population dynamics of the glacial relict amphipods in a subarctic lake: role of density‐dependent and density‐independent factors

Maximov

2021

Ecology and Evolution

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Relative role of intrinsic density-dependent factors (such as inter-and intraspecific competition, predation) and extrinsic density-independent factors (environmental changes) in population dynamics is a key issue in ecology. Density-dependent mechanisms are considered as important drivers of population dynamics in many vertebrate and insect species; however, their influence on the population dynamics of freshwater invertebrates is not clearly understood. In this study, I examined interannual variations in the abundance of the glacial relict amphipod Monoporeia affinis in a small subarctic lake based on long-term (2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019) monitoring data. The results suggest that the population dynamics of amphipods in the lake is influenced by the combined effects of both intrinsic and extrinsic factors. The reproductive success of amphipod cohorts was inversely related to its initial abundance, indicating it is influenced by density-dependent factors. M. affinis recruitment was negatively correlated with population density and near-bottom temperature but positively correlated with food availability, which is defined as the concentration of chlorophyll a. Multiple regression with chlorophyll, temperature, and abundance of parent cohort as independent factors explained about 80% of the variation in the reproductive success of amphipods. The negative correlation between amphipod recruitment and water temperature indicates that the current climate conditions adversely affect the populations of glacial relict amphipods even in cold-water lakes of the subarctic zone. Results of this study can be useful in environmental assessments to separate population oscillations connected with density-dependent mechanisms from human-mediated changes.

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Section: Discussionmentioning

confidence: 99%

“…There are only three fish species in the lake. Two of them perch, Perca fluviatilis, and vendace, Coregonus albula, feed mainly on macrofauna including M. affinis (Berezina et al, 2018(Berezina et al, , 2021.…”

Section: Study Speciesmentioning

confidence: 99%

Population dynamics of the glacial relict amphipods in a subarctic lake: role of density‐dependent and density‐independent factors

Maximov

2021

Ecology and Evolution

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“…Zooplankton biomass is dominated by the two most common groups of planktonic crustaceans, including cladocerans and copepods. The most abundant species were two species of cladocerans, Bosmina longirostris and Sida crystallina, and the cyclopoid copepod, Cyclops scutifer [32,34].…”

Section: Lake Ecosystem Descriptionmentioning

confidence: 99%

“…), and megalopteran Sialis flavilatera contributed notably to the benthic biomass of the lake. Sergentia coracina, Procladius choreus, and species of the genera Ablabesmyia were the most frequent taxa of chironomid dipterans [34]. Zooplankton biomass is dominated by the two most common groups of planktonic crustaceans, including cladocerans and copepods.…”

Section: Lake Ecosystem Descriptionmentioning

confidence: 99%

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Seasonal Diet Changes and Trophic Links of Cold-Water Fish (Coregonus albula) within a Northern Lake Ecosystem

Berezina,

Terentjev,

Zubova

et al. 2024

Animals

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The seasonal feeding patterns of the cold-adapted fish, Coregonus albula, are poorly studied in high-latitude lakes but could provide insight for predicting the effects of global warming. We examined vendace’s diet composition, traced the carbon and nitrogen isotope ratios from producers to consumers in the food web, and estimated vendace’s trophic position in a subarctic lake (the White Sea basin). Results showed the vendace to be a typical euryphagous fish, but clear seasonal differences were found in the relative importance of plankton and benthos in the diet. The vendace consumed primarily benthic amphipods in the summer, planktonic cladocerans in the autumn, and copepods in the winter–spring (under ice); larvae of aquatic insects were the second-most important food items throughout the year. Because of the substantial proportion of fish embryos in its diet, the vendace had a trophic position similar to that of a predatory fish (perch). The Bayesian food source-mixing model revealed that the majority of vendace energy derives from planktonic copepods. The dominant Cyclops had the lowest carbon isotope values, suggesting a carbon-depleted diet typical for methanotrophic bacteria, as its probable food source was in a lake under ice. Understanding the feeding patterns of vendace provides information to better predict the potential biotic effects of environmental change on lake ecosystems.

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Interannual variability of secondary production: long-term study of subarctic population of Monoporeia affinis (Amphipoda)

Maximov

2023

Hydrobiologia

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Relations between the Food Spectrum of Fishes and the Composition of Zooplankton and Benthos in a Subarctic Lake

Cited by 8 publications

References 18 publications

Population dynamics of the glacial relict amphipods in a subarctic lake: role of density‐dependent and density‐independent factors

Population dynamics of the glacial relict amphipods in a subarctic lake: role of density‐dependent and density‐independent factors

Seasonal Diet Changes and Trophic Links of Cold-Water Fish (Coregonus albula) within a Northern Lake Ecosystem

Interannual variability of secondary production: long-term study of subarctic population of Monoporeia affinis (Amphipoda)

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