Özet:

Stable isotopes offer an opportunity to investigate lake dynamics in the absence of whole catchment studies. This study considered multi-year δ18O values for six different lakes located in the Italian Alps. We studied δ18O values of two large (L. Caldonazzo and L. Levico) and four small lakes (L. Lavarone, L. Santo di Cembra, L. Serraia, and L. Tovel) characterised by different hydrological regimes (> or <1 year renewal time) and size (> or <50 ha). Differences in isotope composition along the water column, between years and layers were used to investigate the extend of lake water renewal, mixis, stratification, and groundwater infiltration. Lakes with short renewal time had significantly different spring overturn values, while lakes with longer renewal time had substantially constant values. The isotope content of the water column also clarified the extent of mixis for some lakes: Lavarone underwent complete mixing only in some years, while Tovel, previously considered meromictic, could no longer be considered as such. With the exception of L. Tovel, characterised by a peculiar hydrology, thermal stratification was reflected in yearly isotope patterns. Analysis of hypolimnetic isotope values indicated that in L. Lavarone and L. Serraia strong storm events altered summer hypolimnetic δ18O values suggesting groundwater infiltration. Furthermore, epilimnetic isotope enrichment was related to lake elevation by a linear relationship. The extraordinarily hot 2003 summer led to a higher evaporation with respect to other years considered. Multi-annual data on the isotopic values of rainfall for L. Tovel (1178 m a.s.l.) provided the necessary background for data interpretation since precipitation governs isotope inputs. Based on our data, we proposed a general scheme of the seasonal δ18O pattern in temperate lakes distinguishing between small and large lakes. PERINI, Matteo, Federica CAMIN, Flavio CORRADINI, Ulrike OBERTEGGER, and Giovanna FLAIM. 2009. “Use of δ18O in the Interpretation of Hydrological Dynamics in Lakes”. Journal of Limnology 68 (2):174-82. https://doi.org/10.4081/jlimnol.2009.174. More Citation Formats ACM ACS APA ABNT Chicago Harvard MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Downloads Download data is not yet available. Citations List of Cited By : Planktothrix populations in subalpine lakes: selection for strains with strong gas vesicles as a function of lake depth, morphometry and circulation DOMENICO D’ALELIO, ANDREA GANDOLFI, ADRIANO BOSCAINI, GIOVANNA FLAIM, MONICA TOLOTTI, NICO SALMASO Freshwater Biology : 2011 Shift from nival to pluvial recharge of an aquifer-fed lake increases water temperature Giovanna Flaim, Ami Nishri, Federica Camin, Stefano Corradini, Ulrike Obertegger Inland Waters : 2019 Temporal and lake-specific variations in oxygen and hydrogen stable isotopes in a boreal lake-chain during two hydrologically differing years Paula Kankaala, Eloni Sonninen, Eeva Einola, Jussi Huotari, Timo Huttula, Suvi Mäkelä, Anne Ojala, Martti Rask, Tiina Tulonen, Lauri Arvola Inland Waters : 2023 Carbon and oxygen stable isotopes of freshwater fish otoliths from the São Francisco River, northeastern Brazil NATAN S. PEREIRA, ALCIDES N. SIAL, PATRÍCIA B. PINHEIRO, FABRÍCIO L. FREITAS, ADRIANA M.C. SILVA Anais da Academia Brasileira de Ciências : 2021 Optimization of oxygen-18 ratio measurements by equilibration – Isotope ratio mass spectrometry using various water content matrices Francois Guyon, Laetitia Gaillard, Dana Alina Magdas Talanta : 2018 Tracing and quantifying lake water and groundwater fluxes in the area under mining dewatering pressure using coupled O and H stable isotope approach Dominika Lewicka-Szczebak, Mariusz-Orion Jędrysek Isotopes in Environmental and Health Studies : 2013 Effects of the 2017 drought on isotopic and geochemical gradients in the Adige catchment, Italy Gabriele Chiogna, Patrick Skrobanek, Tahoora Sheikhy Narany, Ralf Ludwig, Christine Stumpp Science of The Total Environment : 2018 Stable isotopes of lakes and precipitation along an altitudinal gradient in the Eastern Alps Giovanna Flaim, Federica Camin, Agostino Tonon, Ulrike Obertegger Biogeochemistry : 2013 Positive and negative impacts of five Austrian gravel pit lakes on groundwater quality Christian Muellegger, Andreas Weilhartner, Tom J. Battin, Thilo Hofmann Science of The Total Environment : 2013 Themes by Openjournaltheme.com authors FOR AUTHORS SUBMIT YOUR PAPER Guide for Authors Benefits for Authors How to write a scientific paper How to write a Review article Article Processing Charge Registering new species in ZooBank reviewers FOR REVIEWERS Benefits for Reviewers How to review Thanks to Reviewers links LINKS CNR-IRSA - Water Research Institute Associazione Italiana di Oceanologia e Limnologia International Society of Limnology EFFS - European Federation for Freshwater Sciences International Society for Microbial Ecology flyer JOURNAL FLYER Phytoplankton-zooplankton coupling in a cascade of hypertrophic fishponds 21 September 2023 Marija Radojičić et al. Vol. 82 (2023) Seasonal variation in the relative strength of bottom-up vs top-down effects in pelagic cladoceran populations identified through contribution analysis of birth rate 7 September 2023 Anna A. Kasparson et al. Vol. 82 (2023) In situ effects of arsenic, aluminium and chromium stresses on algal periphyton of the river Ganga at Varanasi, India 30 June 2023 Arpana Yadav et al. Vol. 82 (2023) Periphyton growth on allochthonous input in streams may lead to higher individual growth rates of the invasive New Zealand mud snail (Potamopyrgus antipodarum) 20 June 2023 Sally Ghannam et al. Vol. 82 (2023) Gross mismatches between salmonid stocking and capture record data in a large Alpine lake basin in Northern Italy suggest a low stocking effectiveness for an endangered native trout 16 June 2023 Gianluca Polgar et al. Vol. 82 (2023) @j_limnology Most read last month Longitudinal recovery gradient of macroinvertebrates during different hydrological scenarios in a downstream river reach 107 A georeferenced dataset for occurrence records of the phylum Rotifera in Africa 90 The Freshwater Biodiversity Information System (FBIS) fish data: a georeferenced dataset of freshwater fishes occurring in South Africa 74 Most Cited Article Formation of large colonies: a defense mechanism of Microcystis aeruginosa under continuous grazing pressure by flagellate Ochromonas sp. Cited: 60 19 January 2012 Zhen Yang et al. A numerical index for evaluating phytoplankton response to changes in nutrient levels in deep mediterranean reservoirs Cited: 60 1 February 2009 Aldo MARCHETTO et al. Last Updated: 3 October 2023 Keywords The Journal of Limnology is an Open Access, academic peer-reviewed journal published by PAGEPress®, Pavia, Italy on behalf of the CNR-IRSA, Italy. All credits and honors to PKP for their OJS. Registered in print in Verbania, 7-10-1959, n. 58.

Anahtar Kelimeler: