Ongoing ecological shifts in a large lake are driven by climate change and eutrophication: evidences from a three-decade study in Lake Garda

Hydrobiologia, Journal Year: 2017, Volume and Issue: 824(1), P. 177 - 195

Published: Nov. 9, 2017

Language: Английский

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Climate-driven changes in lakes from the Peruvian Andes

Journal of Paleolimnology, Journal Year: 2015, Volume and Issue: 54(1), P. 153 - 160

Published: May 7, 2015

Language: Английский

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Spatial distribution of environmental indicators in surface sediments of Lake Bolshoe Toko, Yakutia, Russia

Biogeosciences, Journal Year: 2019, Volume and Issue: 16(20), P. 4023 - 4049

Published: Oct. 18, 2019

Abstract. Rapidly changing climate in the Northern Hemisphere and associated socio-economic impacts require reliable understanding of lake systems as important freshwater resources sensitive sentinels environmental change. To better understand time-series data sediment cores, it is necessary to gain information on within-lake spatial variabilities indicator data. Therefore, we retrieved a set 38 samples from surface along habitat gradients boreal, deep, yet pristine Lake Bolshoe Toko southern Yakutia, Russia. Our methods comprise laboratory analyses sediments for multiple proxy parameters, including diatom chironomid taxonomy, oxygen isotopes silica, grain-size distributions, elemental compositions (XRF), organic carbon content, mineralogy (XRD). We analysed water cations, anions, isotopes. results show that assemblages are strongly influenced by depth dominated planktonic species, i.e. Pliocaenicus bolshetokoensis. Species richness diversity higher northern part basin, with availability benthic, periphytic, niches shallower waters. δ18Odiatom values deeper south-western lake, probably related temperature differences. The highest amount taxa underrepresented training used palaeoclimate inference was found close Utuk River at littoral profundal sites. Abiotic components not symmetrically distributed but vary restricted areas differential forcing. Grain size matter mainly controlled both river input depth. Mineral (XRD) distributions methamorphic lithology Stanovoy mountain range, while elements (XRF) intermingled due catchment diagenetic conclude represents valuable archive multiproxy reconstruction based diatoms (including isotopes), chironomids, sediment–geochemical parameters. suggest coring locations preferably intermediate basin deep central account representative bioindicator temporal resolution, respectively.

Language: Английский

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Phytoplankton and anthropogenic changes in pelagic environments

Hydrobiologia, Journal Year: 2020, Volume and Issue: 848(1), P. 251 - 284

Published: June 12, 2020

Language: Английский

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Climate variability promotes unprecedented cyanobacterial blooms in a remote, oligotrophic Ontario lake: evidence from paleolimnology

Journal of Paleolimnology, Journal Year: 2019, Volume and Issue: 62(1), P. 31 - 52

Published: March 30, 2019

Language: Английский

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