Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes
Five major factors control nutrient and organic matter inputs in high-Arctic lakes, all potentially affected by climate change: ice cover; run-off from the watershed; aquatic and terrestrial primary productivity; guano deposition from birds. Quantifying these controls is a key first step to understa...
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ftunivsalento:oai:iris.unisalento.it:11587/517439 2024-06-23T07:49:55+00:00 Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes CALIZZA, EDOARDO COSTANTINI, Maria Letizia ROSSI, David PASQUALI, Vittorio CAREDDU, GIULIO ROSSI, Loreto Calizza, Edoardo Costantini, Maria Letizia Rossi, David Pasquali, Vittorio Careddu, Giulio Rossi, Loreto 2016 STAMPA https://hdl.handle.net/11587/517439 https://doi.org/10.1007/s12210-016-0515-9 http://www.springerlink.com/content/120941/ eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000382669200020 volume:27 firstpage:191 lastpage:199 numberofpages:9 journal:RENDICONTI LINCEI. SCIENZE FISICHE E NATURALI https://hdl.handle.net/11587/517439 doi:10.1007/s12210-016-0515-9 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84962194773 http://www.springerlink.com/content/120941/ nitrogen carbon sediment biogeochemical cycle climate change hydro-ecology svalbard info:eu-repo/semantics/article 2016 ftunivsalento https://doi.org/10.1007/s12210-016-0515-9 2024-05-31T03:33:12Z Five major factors control nutrient and organic matter inputs in high-Arctic lakes, all potentially affected by climate change: ice cover; run-off from the watershed; aquatic and terrestrial primary productivity; guano deposition from birds. Quantifying these controls is a key first step to understand what combination of factors underlies the biological productivity in Arctic lakes and drives their ecological response to climate change. Based on C and N elemental content and stable isotope analysis in sediments belonging to three lakes in North Spitsbergen (Svalbard), Digital Elevation Models and drainage maps, we propose an integrated approach for the analysis of nutrient and organic matter inputs in lakes and the role of catchment hydro-geomorphology in determining inter-lake differences in the isotopic composition of sediments. Given its high run-off and large catchment, organic deposits in Tvillingvatnet were dominated by terrestrial inputs, whereas inputs were mainly of aquatic origin in Storvatnet, a lowland lake characterised by low potential run-off. In Kolhamna, organic deposits seemed to be dominated by inputs from birds. Isotopic signatures were similar between samples within each lake, representing precise tracers for studies on the effect of climate change on biogeochemical cycles in lakes. The presented approach proved to be an effective research pathway for the identification of factors underlying nutrient and organic matter inputs within each water body, as well as for the modelling of expected changes in nutrient content associated with changes in isotopic composition of sediments. Article in Journal/Newspaper Arctic Climate change Svalbard Spitsbergen Università del Salento: CINECA IRIS Arctic Svalbard Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Storvatnet ENVELOPE(13.659,13.659,66.147,66.147) Kolhamna ENVELOPE(11.922,11.922,78.932,78.932) Rendiconti Lincei 27 S1 191 199 |
institution |
Open Polar |
collection |
Università del Salento: CINECA IRIS |
op_collection_id |
ftunivsalento |
language |
English |
topic |
nitrogen carbon sediment biogeochemical cycle climate change hydro-ecology svalbard |
spellingShingle |
nitrogen carbon sediment biogeochemical cycle climate change hydro-ecology svalbard CALIZZA, EDOARDO COSTANTINI, Maria Letizia ROSSI, David PASQUALI, Vittorio CAREDDU, GIULIO ROSSI, Loreto Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
topic_facet |
nitrogen carbon sediment biogeochemical cycle climate change hydro-ecology svalbard |
description |
Five major factors control nutrient and organic matter inputs in high-Arctic lakes, all potentially affected by climate change: ice cover; run-off from the watershed; aquatic and terrestrial primary productivity; guano deposition from birds. Quantifying these controls is a key first step to understand what combination of factors underlies the biological productivity in Arctic lakes and drives their ecological response to climate change. Based on C and N elemental content and stable isotope analysis in sediments belonging to three lakes in North Spitsbergen (Svalbard), Digital Elevation Models and drainage maps, we propose an integrated approach for the analysis of nutrient and organic matter inputs in lakes and the role of catchment hydro-geomorphology in determining inter-lake differences in the isotopic composition of sediments. Given its high run-off and large catchment, organic deposits in Tvillingvatnet were dominated by terrestrial inputs, whereas inputs were mainly of aquatic origin in Storvatnet, a lowland lake characterised by low potential run-off. In Kolhamna, organic deposits seemed to be dominated by inputs from birds. Isotopic signatures were similar between samples within each lake, representing precise tracers for studies on the effect of climate change on biogeochemical cycles in lakes. The presented approach proved to be an effective research pathway for the identification of factors underlying nutrient and organic matter inputs within each water body, as well as for the modelling of expected changes in nutrient content associated with changes in isotopic composition of sediments. |
author2 |
Calizza, Edoardo Costantini, Maria Letizia Rossi, David Pasquali, Vittorio Careddu, Giulio Rossi, Loreto |
format |
Article in Journal/Newspaper |
author |
CALIZZA, EDOARDO COSTANTINI, Maria Letizia ROSSI, David PASQUALI, Vittorio CAREDDU, GIULIO ROSSI, Loreto |
author_facet |
CALIZZA, EDOARDO COSTANTINI, Maria Letizia ROSSI, David PASQUALI, Vittorio CAREDDU, GIULIO ROSSI, Loreto |
author_sort |
CALIZZA, EDOARDO |
title |
Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
title_short |
Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
title_full |
Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
title_fullStr |
Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
title_full_unstemmed |
Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
title_sort |
stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes |
publishDate |
2016 |
url |
https://hdl.handle.net/11587/517439 https://doi.org/10.1007/s12210-016-0515-9 http://www.springerlink.com/content/120941/ |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(13.659,13.659,66.147,66.147) ENVELOPE(11.922,11.922,78.932,78.932) |
geographic |
Arctic Svalbard Guano Storvatnet Kolhamna |
geographic_facet |
Arctic Svalbard Guano Storvatnet Kolhamna |
genre |
Arctic Climate change Svalbard Spitsbergen |
genre_facet |
Arctic Climate change Svalbard Spitsbergen |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000382669200020 volume:27 firstpage:191 lastpage:199 numberofpages:9 journal:RENDICONTI LINCEI. SCIENZE FISICHE E NATURALI https://hdl.handle.net/11587/517439 doi:10.1007/s12210-016-0515-9 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84962194773 http://www.springerlink.com/content/120941/ |
op_doi |
https://doi.org/10.1007/s12210-016-0515-9 |
container_title |
Rendiconti Lincei |
container_volume |
27 |
container_issue |
S1 |
container_start_page |
191 |
op_container_end_page |
199 |
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1802640646460145664 |