The benthos as the basis of vendace, Coregonus albula, and perch, Perca fluviatilis, diets in an oligotrophic sub-Arctic lake

Berezina, Nadezhda A.; Strelnikova, A. P.; Maximov, A. L.

doi:10.1007/s00300-018-2319-0

Cited by 16 publications

(9 citation statements)

References 36 publications

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“…Food shortage for amphipods is more probable in warmer water because of higher metabolic rate and energy losses at high temperature. In Lake Krivoe, amphipods are consumed by perch (Perca fluviatilis) and vendace (Coregonus albula) (Berezina et al, 2018). These fish switch to feeding on M. affinis in late August-October when deep waters warm up during autumn mixing.…”

Section: Discussionmentioning

confidence: 99%

“…The importance of other supposed density-dependent (predation and other interspecific interactions) factors as a mechanism regulating M. affinis population in the lake is equivocal. 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(Berezina et al, , 2021.…”

Section: Discussionmentioning

confidence: 99%

“…affinis population in the lake is equivocal. 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 ).…”

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%

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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%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Study Speciesmentioning

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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“…Хищный образ жизни у корюшки наблюдается только у крупных особей (> 250 мм), в основном ей характерен бентосный тип питания. Ряпушка является типичным планктонофагом в бореальных озерах (Northcote, Hammar, 2006), в олиготрофных субарктических озерах с низкими количественными показателями зоопланктона ряпушка переходит на бентосное питание (Berezina et al, 2018). Оз.…”

Section: Discussionunclassified

Питание сига coregonus lavaretus, европейской ряпушки c. Albula и европейской корюшки osmerus eperlanus в оз. Имандра

Zubova¹,

Ран²,

Kashulin³

2019

Труды ФНС

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Аннотация. Исследовано питание наиболее многочисленных видов рыб крупнейшего субарктического оз. Имандра-сига Coregonus lavaretus, европейской ряпушки C. albula и европейской корюшки Osmerus eperlanus. Было выявлено, что по типу питания европейская корюшка может быть классифицирована в Имандре, как типичный хищник-ихтиофаг, питающийся в основном ряпушкой и девятииглой корюшкой, в то время как малотычинковый сиг и европейская ряпушка-как всеядные хищники, отдающие предпочтение макрозообентосу. Ключевые слова: оз. Имандра, доминантный и субдоминантный вид, питание, сиг Сoregonus lavaretus, ряпушка C. albula, корюшка Osmerus eperlanus.

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Nutritional quality of littoral macroinvertebrates and pelagic zooplankton in subarctic lakes

Vesterinen

Keva

Kahilainen

et al. 2020

Limnology & Oceanography

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Littoral benthic primary production is considered the most important energy source of consumers in subarctic lakes. We analyzed essential fatty acid (EFA) and amino acid (EAA) content of 23 littoral benthic macroinvertebrate taxa as well as cladocerans and copepods from pelagic and littoral habitats of 8–9 subarctic lakes to compare their nutritional quality. Pelagic crustacean zooplankton had significantly higher EFA and total FA content (on average 2.6‐fold and 1.6‐fold, respectively) than littoral macroinvertebrates in all our study lakes. Specifically, docosahexaenoic acid (DHA), one of the most important EFA for juvenile fish, was almost exclusively found in pelagic copepods. In littoral macroinvertebrates, only Lymnaea (Gastropoda), Eurycercus (Cladocera), and Gammarus (Amphipoda) contained a low amount of DHA, whereas most littoral invertebrate taxa contained moderate amounts of eicosapentaenoic acid (EPA). The difference in DHA content may explain why so many generalist fish shift their diet to pelagic zooplankton at their peak abundance in mid/late‐summer. Meanwhile, the differences in EAA content between pelagic zooplankton and littoral invertebrates were much lower than for EFA suggesting a wider availability of EAA in subarctic lakes, except for methionine. In the studied subarctic lakes, EFA and EAA variation in consumers was more related to taxon‐specific than lake‐specific characteristics. This indicates that climate‐induced changes in the abundance and community structure of zooplankton vs. littoral macroinvertebrates will be important parameters in determining the availability of EFA and EAA to juvenile fish, and potentially fish production.

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The benthos as the basis of vendace, Coregonus albula, and perch, Perca fluviatilis, diets in an oligotrophic sub-Arctic lake

Cited by 16 publications

References 36 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

Питание сига coregonus lavaretus, европейской ряпушки c. Albula и европейской корюшки osmerus eperlanus в оз. Имандра

Nutritional quality of littoral macroinvertebrates and pelagic zooplankton in subarctic lakes

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