Decline in the deepwater benthic communities abundance in the Onego Lake under multifactor influence

Kalinkina, Nataliya Michailovna; Sidorova, Anastasiya; Polyakova, T. N.; Belkina, Nataliya Alexandrovna; Berezina, Nadezhda A.; Litvinova, I. A.

doi:10.15393/j1.art.2016.5182

Cited by 9 publications

(11 citation statements)

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“…Differentials in reflectivity (albedo index) of ice (30-40%) or snow (50-90%) along with that of water (10%) also determine solar energy transfer to the lake. Ice cover thus influences the timing of spring phytoplankton blooms (Kalinkina et al 2016). (Livingstone et al 2010Dibike et al 2011, Surdu et al 2017 River discharge represents the main source of nutrient and pollutant input into Lakes Onego and Ladoga.…”

Section: Discussionmentioning

confidence: 99%

“…Winters in the study area became milder from 1970 to 2017, causing an increase in thaws and the amount of liquid precipitation and a decrease in soil freezing. Leaching of humic substances along with iron and phosphorus from soils into lakes increased, thus changing the composition of suspended load, which shifted lake water colour toward browner hues (Kalinkina et al 2016, Sabilina 2016. This brownification is associated with changes in water column chemistry, water quality, and trophic structure (Kalinkina et al 2016.…”

Section: Discussionmentioning

confidence: 99%

“…Leaching of humic substances along with iron and phosphorus from soils into lakes increased, thus changing the composition of suspended load, which shifted lake water colour toward browner hues (Kalinkina et al 2016, Sabilina 2016. This brownification is associated with changes in water column chemistry, water quality, and trophic structure (Kalinkina et al 2016. Other boreal lakes exhibit similar processes (Lenard and Ejankowski 2017).…”

Section: Discussionmentioning

confidence: 99%

“…The lake also showed an increase in the amount of iron in upper silty layers and browner water colour. These observations indicate changes in water quality and lake ecology (Kalinkina et al 2016).…”

Section: Introductionmentioning

confidence: 88%

“…2016, and 40.0 m 3 /s in 2017. The Shuya River, with its abundant suspended organic matter of humic origin, exerted a major influence on the formation of bottom sediments in the northwestern part of the Bay (Kalinkina et al 2016).…”

Section: Shuya River Inflowmentioning

confidence: 99%

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Climate change impacts on the watersheds of Lakes Onego and Ladoga from remote sensing and in situ data

et al. 2019

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This study investigated climate change impacts on watershed parameters as well as on water balance, water temperatures, and ice-cover regime for 2 large lakes in western Russia, Lakes Ladoga and Onego. Parts of the study occurred during a period of pronounced warming and limited ice cover on Lake Ladoga, which precluded winter surveys of the lake. This limitation notwithstanding, the research provides background climatic and hydrological conditions for the joint Russian-Swiss project "Lake Ladoga-Life under the ice." For both Lakes Onego and Ladoga from 1955 to 2017, air temperature, precipitation, and evaporation data all showed increasing trends, and inflow, outflow, and water levels showed no discernible changes from baseline conditions. Thermal and ice conditions of Lake Onego showed greater sensitivity to climatic changes than corresponding conditions for Lake Ladoga because of the latter's significantly smaller volume and lower heat content. The total ice-cover duration for Lake Onego decreased ∼20 days during the observation period. Detailed data analysis also revealed key characteristics of the Shuya River discharge into Petrozavodsk Bay, where a major part of the fieldwork occurred. River discharge into Lakes Ladoga and Onego increased in the winter. These processes collectively can change the hydrochemical conditions, water quality, and habitat.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 88%

Section: Shuya River Inflowmentioning

confidence: 99%

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Climate change impacts on the watersheds of Lakes Onego and Ladoga from remote sensing and in situ data

et al. 2019

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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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Distribution of the Mass Species of Benthic Crustaceans on the Nearshore Slope of Lake Ladoga

Zuyev

2023

Inland Water Biol

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Decline in the deepwater benthic communities abundance in the Onego Lake under multifactor influence

Cited by 9 publications

References 0 publications

Climate change impacts on the watersheds of Lakes Onego and Ladoga from remote sensing and in situ data

Climate change impacts on the watersheds of Lakes Onego and Ladoga from remote sensing and in situ data

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

Distribution of the Mass Species of Benthic Crustaceans on the Nearshore Slope of Lake Ladoga

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