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Udisti R., S. Becagli, E. Castellano, O. Cerri, A. Mannini, F. Marino, A. Morganti, E. Salvietti, M. Severi, R. Traversi. |
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2004-05 summer and winter-over campaign for aerosol sampling at dome c (east Antarctica): sampling strategies and first results |
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Journal Article |
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Year |
2008 |
Publication |
Terra antarctica |
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14 |
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187-198 |
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Terra Antarctica Report, 2008, 14, 187-198. |
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1181 |
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Bachelor's thesis |
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1122-8628 |
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yes |
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5406 |
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Author |
Udisti R., S. Becagli, E. Castellano, O. Cerri, A. Mannini, F. Marino, A. Morganti, E. Salvietti, M. Severi, R. Traversi. |
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Title |
Present time atmosphere-snow interaction at Dome C from size-segregated aerosol, superficial snow and hoar chemical analysis: a tool in interpreting past atmospheres from ice core stratigraphies. |
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Conference - International - Communication |
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Year |
2006 |
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EGU general assembly. Vienna, Austria, 02-07 Aprile 2006. |
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1181 |
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yes |
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5417 |
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Author |
Udisti R., S. Becagli, E. Castellano, O. Cerri, A. Mannini, A. Morganti, E. Salvietti, M. Severi, R. Traversi, F. Lucarelli, S. Nava, F. Marino. |
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Title |
All year-round aerosol sampling at Dome C, Central East Antarctica: first results of the 2004-2005 campaign and scientific activity carrying on in the present 2005-06 campaign. |
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Conference - International - Communication |
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Year |
2006 |
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2006 International Aerosol Conference, 10-15 Settembre 2006, St. Paul Minnesota, USA |
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1181 |
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yes |
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5426 |
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Udisti R., S. Becagli, E. Castellano, O. Cerri, F. Marino, A. Morganti, F. Rugi, M. Severi, R. Traversi.si. |
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Title |
Today and past climate-environment feedback processes from temporal trends of selected markers of bio-geo-chemical cycles in antarctic depositions. |
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Conference - National - Communication |
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2007 |
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Congresso Nazionale di Chimica degli Ambienti Polari, Venezia, Giugno 2007 |
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1181 |
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yes |
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5437 |
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Author |
Udisti R., E. Castellano, I. Fattori, M. Innocenti, A. Mannini, E. Salvietti, M. Severi. |
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Title |
Inner and coastal Antarctic aerosol: a view of the composition of background tropospheric aerosol. |
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Conference - International - Communication |
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2005 |
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X EuCheMS-DCE International Conference – “The role of Chemistry in the Environment: our choice, our life. Research, education and professional”. Rimini (Italy), 4-7 Settembre 2005. Abstract book, p. 29. |
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1181 |
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yes |
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Serial |
5413 |
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Author |
Udisti R, Dayan U, Becagli S, Busetto M, Frosini D, Legrand M, Lucarelli F, Preunkert S, Severi M, Traversi R, Vitale V, |
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Title |
Sea spray aerosol in central Antarctica. Present atmospheric behaviour and implications for paleoclimatic reconstructions
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Type |
Journal Article |
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Year |
2012 |
Publication |
Atmospheric Environment |
Abbreviated Journal |
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Volume |
52 |
Issue |
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Pages |
109-120 |
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Keywords |
Inland Antarctica aerosol, Sea spray aerosol, Fractionating effects, Size distribution, Transport processes, Source characterization, Snow-aerosol interaction, |
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Abstract |
From November 2004 to December 2007, size-segregated aerosol samples were collected all-year-round at Dome C (East Antarctica) by using PM10 and PM2.5 samplers, and multi-stage impactors. The data set obtained from the chemical analysis provided the longest and the most time-resolved record of sea spray aerosol (sea salt Na+) in inner Antarctica. Sea spray showed a sharp seasonal pattern. The highest values measured in winter (ApreNov) were about ten times larger than in summer (DeceMar). For the first time, a size-distribution seasonal pattern was also shown: in winter, sea spray particles are mainly submicrometric, while their summer size-mode is around 1-2 mm. Meteorological analysis on a synoptic scale allowed the definition of atmospheric conditions leading sea spray to Dome C. An extreme-value approach along with specific environmental based criteria was taken to yield stronger fingerprints linking atmospheric circulation (means and anomalies) to extreme sea spray events. Air mass backtrajectory analyses for some high sea spray events allowed the identification of two major air mass pathways, reflecting different size distributions: micrometric fractions for transport from the closer Indian-Pacific sector, and sub-micrometric particles for longer trajectories over the Antarctic Plateau. The seasonal pattern of the SO4 /Naþ ratio enabled the identification of few events depleted in sulphate, with respect to the seawater composition. By using methanesulphonic acid (MSA) profile to evaluate the biogenic SO4 contribution, a more reliable sea salt sulphate was calculated. In this way, few events (mainly in April and in September) were identified originating probably from the “frost flower” source. A comparison with daily-collected superficial snow samples revealed that there is a temporal shift between aerosol and snow sea spray trends. This feature could imply a more complex deposition processes of sea spray, involving significant contribution of wet and diamond dust deposition, but further work has to be carried out to rule out the effect of wind re-distribution and to have more statistic significance. |
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Programme |
414 |
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ISSN |
1352-2310 |
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yes |
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Call Number |
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Serial |
4660 |
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Author |
Uchida T., Hondoh T., Mae S., Duval P. & Lipenkov V.Y. |
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Title |
Effects of temperature and pressure on the transformation rate from air bubbles to air-hydrate crystals in ice sheets. |
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Journal Article |
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Year |
1994 |
Publication |
Annals of glaciology |
Abbreviated Journal |
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Volume |
20 |
Issue |
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Pages |
143-147 |
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159 |
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0260-3055 |
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yes |
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278 |
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Author |
Tuomas Kankaanpää, Eero Vesterinen, Bess Hardwick, Niels M. Schmidt, Tommi Andersson, Paul E. Aspholm, Isabel C. Barrio, Niklas Beckers, Joël Bêty, Tone Birkemoe, Melissa DeSiervo, Katherine H. I. Drotos, Dorothee Ehrich, Olivier Gilg, Vladimir Gilg, Nils Hein, Toke T. Høye, Kristian M. Jakobsen, Camille Jodouin, Jesse Jorna, Mikhail V. Kozlov, Jean-Claude Kresse, Don-Jean Leandri-Breton, Nicolas Lecomte, Maarten Loonen, Philipp Marr, Spencer K. Monckton, Maia Olsen, Josée-Anne Otis, Michelle Pyle, Ruben E. Roos, Katrine Raundrup, Daria Rozhkova, Brigitte Sabard, Aleksandr Sokolov, Natalia Sokolova, Anna M. Solecki, Christine Urbanowicz, Catherine Villeneuve, Evgenya Vyguzova, Vitali Zverev, Tomas Roslin |
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Title |
Parasitoids indicate major climate-induced shifts in arctic communities |
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Journal |
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2020 |
Publication |
Global Change Biology |
Abbreviated Journal |
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26 |
Issue |
11 |
Pages |
6276-6295 |
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Keywords |
Arctic climate change DNA barcoding Dryas food webs functional traits host–parasitoid interactions insect herbivory pollinators |
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Abstract |
Climatic impacts are especially pronounced in the Arctic, which as a region is warming twice as fast as the rest of the globe. Here, we investigate how mean climatic conditions and rates of climatic change impact parasitoid insect communities in 16 localities across the Arctic. We focus on parasitoids in a widespread habitat, Dryas heathlands, and describe parasitoid community composition in terms of larval host use (i.e., parasitoid use of herbivorous Lepidoptera vs. pollinating Diptera) and functional groups differing in their closeness of host associations (koinobionts vs. idiobionts). Of the latter, we expect idiobionts—as being less fine-tuned to host development—to be generally less tolerant to cold temperatures, since they are confined to attacking hosts pupating and overwintering in relatively exposed locations. To further test our findings, we assess whether similar climatic variables are associated with host abundances in a 22 year time series from Northeast Greenland. We find sites which have experienced a temperature rise in summer while retaining cold winters to be dominated by parasitoids of Lepidoptera, with the reverse being true for the parasitoids of Diptera. The rate of summer temperature rise is further associated with higher levels of herbivory, suggesting higher availability of lepidopteran hosts and changes in ecosystem functioning. We also detect a matching signal over time, as higher summer temperatures, coupled with cold early winter soils, are related to high herbivory by lepidopteran larvae, and to declines in the abundance of dipteran pollinators. Collectively, our results suggest that in parts of the warming Arctic, Dryas is being simultaneously exposed to increased herbivory and reduced pollination. Our findings point to potential drastic and rapid consequences of climate change on multitrophic-level community structure and on ecosystem functioning and highlight the value of collaborative, systematic sampling effort. |
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1036 |
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1365-2486 |
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7686 |
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Tunino M.L., Parrilli E., Giaquinto L., Duilo A., Sannia G., Feller G. & Marino G. |
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Title |
Secretion of a-amylasefrom Pseudoalteromonas haloplanktis: two different pathways in different hosts. |
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Journal Article |
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Year |
2002 |
Publication |
Journal of bacteriology |
Abbreviated Journal |
J. Bacteriol. |
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184 |
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5814-5817 |
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193 |
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0021-9193 |
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2371 |
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Tuck Geoffrey N, Thomson Robin B, Barbraud Christophe, Delord Karine, Louzao Maite, Herrera Miguel, Weimerskirch Henri, |
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An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross?
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Journal Article |
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2015 |
Publication |
Journal of Applied Ecology |
Abbreviated Journal |
J Appl Ecol |
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Volume |
52 |
Issue |
4 |
Pages |
950-959 |
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109 |
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0021-8901 |
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