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apps Other research productkeyboard_double_arrow_right Other ORP type 2018 English Funded by:EC | ARCTIC, EC | ACTIVE PERMAFROST, EC | CC-TOPEC| ARCTIC ,EC| ACTIVE PERMAFROST ,EC| CC-TOPTesi, Tommaso; Geibel, Marc C.; Pearce, Christof; Panova, Elena; Vonk, Jorien E.; Karlsson, Emma; Salvado, Joan A.; Kruså, Martin; Bröder, Lisa; Humborg, Christoph; Semiletov, Igor; Gustafsson, Örjan;Recent Arctic studies suggest that sea ice decline and permafrost thawing will affect phytoplankton dynamics and stimulate heterotrophic communities. However, in what way the plankton composition will change as the warming proceeds remains elusive. Here we investigate the chemical signature of the plankton-dominated fraction of particulate organic matter (POM) collected along the Siberian Shelf. POM (> 10 µm) samples were analysed using molecular biomarkers (CuO oxidation and IP25) and dual-carbon isotopes (δ13C and Δ14C). In addition, surface water chemical properties were integrated with the POM (> 10 µm) dataset to understand the link between plankton composition and environmental conditions. δ13C and Δ14C exhibited a large variability in the POM (> 10 µm) distribution while the content of terrestrial biomarkers in the POM was negligible. In the Laptev Sea (LS), δ13C and Δ14C of POM (> 10 µm) suggested a heterotrophic environment in which dissolved organic carbon (DOC) from the Lena River was the primary source of metabolisable carbon. Within the Lena plume, terrestrial DOC probably became part of the food web via bacteria uptake and subsequently transferred to relatively other heterotrophic communities (e.g. dinoflagellates). Moving eastwards toward the sea-ice-dominated East Siberian Sea (ESS), the system became progressively more autotrophic. Comparison between δ13C of POM (> 10 µm) samples and CO2aq concentrations revealed that the carbon isotope fractionation increased moving towards the easternmost and most productive stations. In a warming scenario characterised by enhanced terrestrial DOC release (thawing permafrost) and progressive sea ice decline, heterotrophic conditions might persist in the LS while the nutrient-rich Pacific inflow will likely stimulate greater primary productivity in the ESS. The contrasting trophic conditions will result in a sharp gradient in δ13C between the LS and ESS, similar to what is documented in our semi-synoptic study.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=copernicuspu::934f1a0d14fd1df66ba02fe00390f672&type=result"></script>'); --> </script>
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2007 ItalyAuthors: DI BERARDINO, DINO;DI BERARDINO, DINO;handle: 11588/340050
Il presente progetto, della durata prevista di anni 3, si prefigge il duplice scopo di : 1)Analizzare il DNA di spermatozoi ed ovociti di alcune razze bovine italiane allo scopo di determinare l’incidenza di base delle aneuploidie di origine paterna (spermatozoi) e materna (ovociti); ciò al fine di stabilire un ‘data-base’ sulle aneuploidie (attualmente inesistente), il quale oltre a configurare il quadro attuale della situazione (reproductive health), potrà servire come punto di partenza per futuri accertamenti, onde tenere sotto controllo l’andamento delle aneuploidie nel tempo, specialmente in relazione al lavoro di selezione e di miglioramento genetico e all’evolversi-alquanto preoccupante- delle condizioni ambientali; 2)Costituire una ‘Banca’ di sonde molecolari ‘painting’ cromosoma-specifiche, che potranno essere impiegate per ulteriori approfondimenti ed analisi su cellule germinali e/o somatiche non solo di altre razze bovine, bensì anche di altre specie della famiglia Bovidae, quali la bufalina, l’ovina e la caprina. Detta Banca potrebbe rappresentare un ‘Polo di riferimento’ per Istituzioni di ricerca nazionali ed internazionali impegnate nei programmi di selezione e di miglioramento genetico nonchè nella salvaguardia delle razze e/o tipi genetici bovini minacciati di estinzione.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=11588/340050&type=result"></script>'); --> </script>
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apps Other research productkeyboard_double_arrow_right Other ORP type 2018 English Funded by:EC | ARCTIC, EC | ACTIVE PERMAFROST, EC | CC-TOPEC| ARCTIC ,EC| ACTIVE PERMAFROST ,EC| CC-TOPTesi, Tommaso; Geibel, Marc C.; Pearce, Christof; Panova, Elena; Vonk, Jorien E.; Karlsson, Emma; Salvado, Joan A.; Kruså, Martin; Bröder, Lisa; Humborg, Christoph; Semiletov, Igor; Gustafsson, Örjan;Recent Arctic studies suggest that sea ice decline and permafrost thawing will affect phytoplankton dynamics and stimulate heterotrophic communities. However, in what way the plankton composition will change as the warming proceeds remains elusive. Here we investigate the chemical signature of the plankton-dominated fraction of particulate organic matter (POM) collected along the Siberian Shelf. POM (> 10 µm) samples were analysed using molecular biomarkers (CuO oxidation and IP25) and dual-carbon isotopes (δ13C and Δ14C). In addition, surface water chemical properties were integrated with the POM (> 10 µm) dataset to understand the link between plankton composition and environmental conditions. δ13C and Δ14C exhibited a large variability in the POM (> 10 µm) distribution while the content of terrestrial biomarkers in the POM was negligible. In the Laptev Sea (LS), δ13C and Δ14C of POM (> 10 µm) suggested a heterotrophic environment in which dissolved organic carbon (DOC) from the Lena River was the primary source of metabolisable carbon. Within the Lena plume, terrestrial DOC probably became part of the food web via bacteria uptake and subsequently transferred to relatively other heterotrophic communities (e.g. dinoflagellates). Moving eastwards toward the sea-ice-dominated East Siberian Sea (ESS), the system became progressively more autotrophic. Comparison between δ13C of POM (> 10 µm) samples and CO2aq concentrations revealed that the carbon isotope fractionation increased moving towards the easternmost and most productive stations. In a warming scenario characterised by enhanced terrestrial DOC release (thawing permafrost) and progressive sea ice decline, heterotrophic conditions might persist in the LS while the nutrient-rich Pacific inflow will likely stimulate greater primary productivity in the ESS. The contrasting trophic conditions will result in a sharp gradient in δ13C between the LS and ESS, similar to what is documented in our semi-synoptic study.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=copernicuspu::934f1a0d14fd1df66ba02fe00390f672&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=copernicuspu::934f1a0d14fd1df66ba02fe00390f672&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2007 ItalyAuthors: DI BERARDINO, DINO;DI BERARDINO, DINO;handle: 11588/340050
Il presente progetto, della durata prevista di anni 3, si prefigge il duplice scopo di : 1)Analizzare il DNA di spermatozoi ed ovociti di alcune razze bovine italiane allo scopo di determinare l’incidenza di base delle aneuploidie di origine paterna (spermatozoi) e materna (ovociti); ciò al fine di stabilire un ‘data-base’ sulle aneuploidie (attualmente inesistente), il quale oltre a configurare il quadro attuale della situazione (reproductive health), potrà servire come punto di partenza per futuri accertamenti, onde tenere sotto controllo l’andamento delle aneuploidie nel tempo, specialmente in relazione al lavoro di selezione e di miglioramento genetico e all’evolversi-alquanto preoccupante- delle condizioni ambientali; 2)Costituire una ‘Banca’ di sonde molecolari ‘painting’ cromosoma-specifiche, che potranno essere impiegate per ulteriori approfondimenti ed analisi su cellule germinali e/o somatiche non solo di altre razze bovine, bensì anche di altre specie della famiglia Bovidae, quali la bufalina, l’ovina e la caprina. Detta Banca potrebbe rappresentare un ‘Polo di riferimento’ per Istituzioni di ricerca nazionali ed internazionali impegnate nei programmi di selezione e di miglioramento genetico nonchè nella salvaguardia delle razze e/o tipi genetici bovini minacciati di estinzione.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=11588/340050&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=11588/340050&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu