TY - JOUR A1 - Ahnen, M. L. A1 - Ansoldi, S. A1 - Antonelli, L. A. A1 - Arcaro, C. A1 - Babic, A. A1 - Banerjee, B. A1 - Bangale, P. A1 - Barres de Almeida, U. A1 - Barrio, J. A. A1 - Gonzalez, J. Becerra A1 - Bednarek, W. A1 - Bernardini, E. A1 - Berti, A. A1 - Bhattacharyya, W. A1 - Blanch, O. A1 - Bonnoli, G. A1 - Carosi, R. A1 - Carosi, A. A1 - Chatterjee, A. A1 - Colak, S. M. A1 - Colin, P. A1 - Colombo, E. A1 - Contreras, J. L. A1 - Cortina, J. A1 - Covino, S. A1 - Cumani, P. A1 - Da Vela, P. A1 - Dazzi, F. A1 - De Angelis, A. A1 - De Lotto, B. A1 - Delfino, M. A1 - Delgado, Jose Miguel Martins A1 - Di Pierro, F. A1 - Doert, M. A1 - Dominguez, A. A1 - Prester, D. Dominis A1 - Doro, M. A1 - Glawion, D. Eisenacher A1 - Engelkemeier, M. A1 - Ramazani, V. Fallah A1 - Fernandez-Barral, A. A1 - Fidalgo, D. A1 - Fonseca, M. V. A1 - Font, L. A1 - Fruck, C. A1 - Galindo, D. A1 - Lopez, R. J. Garcia A1 - Garczarczyk, M. A1 - Gaug, M. A1 - Giammaria, P. A1 - Godinovic, N. A1 - Gora, D. A1 - Guberman, D. A1 - Hadasch, D. A1 - Hahn, A. A1 - Hassan, T. A1 - Hayashida, M. A1 - Herrera, J. A1 - Hose, J. A1 - Hrupec, D. A1 - Ishio, K. A1 - Konno, Y. A1 - Kubo, H. A1 - Kushida, J. A1 - Kuvezdic, D. A1 - Lelas, D. A1 - Lindfors, E. A1 - Lombardi, S. A1 - Longo, F. A1 - Lopez, M. A1 - Maggio, C. A1 - Majumdar, P. A1 - Makariev, M. A1 - Maneva, G. A1 - Manganaro, M. A1 - Maraschi, L. A1 - Mariotti, M. A1 - Martinez, M. A1 - Mazin, D. A1 - Menzel, U. A1 - Minev, M. A1 - Miranda, J. M. A1 - Mirzoyan, R. A1 - Moralejo, A. A1 - Moreno, V. A1 - Moretti, E. A1 - Nagayoshi, T. A1 - Neustroev, V. A1 - Niedzwiecki, A. A1 - Nievas Rosillo, M. A1 - Nigro, C. A1 - Nilsson, K. A1 - Ninci, D. A1 - Nishijima, K. A1 - Noda, K. A1 - Nogues, L. A1 - Paiano, S. A1 - Palacio, J. A1 - Paneque, D. A1 - Paoletti, R. A1 - Paredes, J. M. A1 - Pedaletti, G. A1 - Peresano, M. A1 - Perri, L. A1 - Persic, M. A1 - Moroni, P. G. Prada A1 - Prandini, E. A1 - Puljak, I. A1 - Garcia, J. R. A1 - Reichardt, I. A1 - Ribo, M. A1 - Rico, J. A1 - Righi, C. A1 - Rugliancich, A. A1 - Saito, T. A1 - Satalecka, K. A1 - Schroeder, S. A1 - Schweizer, T. A1 - Shore, S. N. A1 - Sitarek, J. A1 - Snidaric, I. A1 - Sobczynska, D. A1 - Stamerra, A. A1 - Strzys, M. A1 - Suric, T. A1 - Takalo, L. A1 - Tavecchio, F. A1 - Temnikov, P. A1 - Terzic, T. A1 - Teshima, M. A1 - Torres-Alba, N. A1 - Treves, A. A1 - Tsujimoto, S. A1 - Vanzo, G. A1 - Vazquez Acosta, M. A1 - Vovk, I. A1 - Ward, J. E. A1 - Will, M. A1 - Zaric, D. A1 - Arbet-Engels, A. A1 - Baack, D. A1 - Balbo, M. A1 - Biland, A. A1 - Blank, M. A1 - Bretz, T. A1 - Bruegge, K. A1 - Bulinski, M. A1 - Buss, J. A1 - Dmytriiev, A. A1 - Dorner, D. A1 - Einecke, S. A1 - Elsaesser, D. A1 - Herbst, T. A1 - Hildebrand, D. A1 - Kortmann, L. A1 - Linhoff, L. A1 - Mahlke, M. A1 - Mannheim, K. A1 - Mueller, S. A. A1 - Neise, D. A1 - Neronov, A. A1 - Noethe, M. A1 - Oberkirch, J. A1 - Paravac, A. A1 - Rhode, W. A1 - Schleicher, B. A1 - Schulz, F. A1 - Sedlaczek, K. A1 - Shukla, A. A1 - Sliusar, V. A1 - Walter, R. A1 - Archer, A. A1 - Benbow, W. A1 - Bird, R. A1 - Brose, Robert A1 - Buckley, J. H. A1 - Bugaev, V. A1 - Christiansen, J. L. A1 - Cui, W. A1 - Daniel, M. K. A1 - Falcone, A. A1 - Feng, Q. A1 - Finley, J. P. A1 - Gillanders, G. H. A1 - Gueta, O. A1 - Hanna, D. A1 - Hervet, O. A1 - Holder, J. A1 - Hughes, G. A1 - Huetten, M. A1 - Humensky, T. B. A1 - Johnson, C. A. A1 - Kaaret, P. A1 - Kar, P. A1 - Kelley-Hoskins, N. A1 - Kertzman, M. A1 - Kieda, D. A1 - Krause, M. A1 - Krennrich, F. A1 - Kumar, S. A1 - Lang, M. J. A1 - Lin, T. T. Y. A1 - Maier, G. A1 - McArthur, S. A1 - Moriarty, P. A1 - Mukherjee, R. A1 - Ong, R. A. A1 - Otte, A. N. A1 - Park, N. A1 - Petrashyk, A. A1 - Pichel, A. A1 - Pohl, Martin A1 - Quinn, J. A1 - Ragan, K. A1 - Reynolds, P. T. A1 - Richards, G. T. A1 - Roache, E. A1 - Rovero, A. C. A1 - Rulten, C. A1 - Sadeh, I. A1 - Santander, M. A1 - Sembroski, G. H. A1 - Shahinyan, K. A1 - Sushch, Iurii A1 - Tyler, J. A1 - Wakely, S. P. A1 - Weinstein, A. A1 - Wells, R. M. A1 - Wilcox, P. A1 - Wilhel, A. A1 - Williams, D. A. A1 - Williamson, T. J. A1 - Zitzer, B. A1 - Perri, M. A1 - Verrecchia, F. A1 - Leto, C. A1 - Villata, M. A1 - Raiteri, C. M. A1 - Jorstad, S. G. A1 - Larionov, V. M. A1 - Blinov, D. A. A1 - Grishina, T. S. A1 - Kopatskaya, E. N. A1 - Larionova, E. G. A1 - Nikiforova, A. A. A1 - Morozova, D. A. A1 - Troitskaya, Yu. V. A1 - Troitsky, I. S. A1 - Kurtanidze, O. M. A1 - Nikolashvili, M. G. A1 - Kurtanidze, S. O. A1 - Kimeridze, G. N. A1 - Chigladze, R. A. A1 - Strigachev, A. A1 - Sadun, A. C. T1 - Extreme HBL behavior of Markarian 501 during 2012 JF - Astronomy and astrophysics : an international weekly journal / European Southern Observatory (ESO) N2 - Aims. We aim to characterize the multiwavelength emission from Markarian 501 (Mrk 501), quantify the energy-dependent variability, study the potential multiband correlations, and describe the temporal evolution of the broadband emission within leptonic theoretical scenarios. Methods. We organized a multiwavelength campaign to take place between March and July of 2012. Excellent temporal coverage was obtained with more than 25 instruments, including the MAGIC, FACT and VERITAS Cherenkov telescopes, the instruments on board the Swift and Fermi spacecraft, and the telescopes operated by the GASP-WEBT collaboration. Results. Mrk 501 showed a very high energy (VHE) gamma-ray flux above 0.2 TeV of similar to 0.5 times the Crab Nebula flux (CU) for most of the campaign. The highest activity occurred on 2012 June 9, when the VHE flux was similar to 3 CU, and the peak of the high-energy spectral component was found to be at similar to 2 TeV. Both the X-ray and VHE gamma-ray spectral slopes were measured to be extremely hard, with spectral indices <2 during most of the observing campaign, regardless of the X-ray and VHE flux. This study reports the hardest Mrk 501 VHE spectra measured to date. The fractional variability was found to increase with energy, with the highest variability occurring at VHE. Using the complete data set, we found correlation between the X-ray and VHE bands; however, if the June 9 flare is excluded, the correlation disappears (significance <3 sigma) despite the existence of substantial variability in the X-ray and VHE bands throughout the campaign. Conclusions. The unprecedentedly hard X-ray and VHE spectra measured imply that their low- and high-energy components peaked above 5 keV and 0.5 TeV, respectively, during a large fraction of the observing campaign, and hence that Mrk 501 behaved like an extreme high-frequency-peaked blazar (EHBL) throughout the 2012 observing season. This suggests that being an EHBL may not be a permanent characteristic of a blazar, but rather a state which may change over time. The data set acquired shows that the broadband spectral energy distribution (SED) of Mrk 501, and its transient evolution, is very complex, requiring, within the framework of synchrotron self-Compton (SSC) models, various emission regions for a satisfactory description. Nevertheless the one-zone SSC scenario can successfully describe the segments of the SED where most energy is emitted, with a significant correlation between the electron energy density and the VHE gamma-ray activity, suggesting that most of the variability may be explained by the injection of high-energy electrons. The one-zone SSC scenario used reproduces the behavior seen between the measured X-ray and VHE gamma-ray fluxes, and predicts that the correlation becomes stronger with increasing energy of the X-rays. KW - astroparticle physics KW - acceleration of particles KW - radiation mechanisms: non-thermal KW - BL Lacertae objects: general KW - BL Lacertae objects: individual: Mrk501 Y1 - 2018 U6 - https://doi.org/10.1051/0004-6361/201833704 SN - 1432-0746 VL - 620 PB - EDP Sciences CY - Les Ulis ER - TY - JOUR A1 - Taal, H. Rob A1 - St Pourcain, Beate A1 - Thiering, Elisabeth A1 - Das, Shikta A1 - Mook-Kanamori, Dennis O. A1 - Warrington, Nicole M. A1 - Kaakinen, Marika A1 - Kreiner-Moller, Eskil A1 - Bradfield, Jonathan P. A1 - Freathy, Rachel M. A1 - Geller, Frank A1 - Guxens, Monica A1 - Cousminer, Diana L. A1 - Kerkhof, Marjan A1 - Timpson, Nicholas J. A1 - Ikram, M. Arfan A1 - Beilin, Lawrence J. A1 - Bonnelykke, Klaus A1 - Buxton, Jessica L. A1 - Charoen, Pimphen A1 - Chawes, Bo Lund Krogsgaard A1 - Eriksson, Johan A1 - Evans, David M. A1 - Hofman, Albert A1 - Kemp, John P. A1 - Kim, Cecilia E. A1 - Klopp, Norman A1 - Lahti, Jari A1 - Lye, Stephen J. A1 - McMahon, George A1 - Mentch, Frank D. A1 - Mueller-Nurasyid, Martina A1 - O'Reilly, Paul F. A1 - Prokopenko, Inga A1 - Rivadeneira, Fernando A1 - Steegers, Eric A. P. A1 - Sunyer, Jordi A1 - Tiesler, Carla A1 - Yaghootkar, Hanieh A1 - Breteler, Monique M. B. A1 - Debette, Stephanie A1 - Fornage, Myriam A1 - Gudnason, Vilmundur A1 - Launer, Lenore J. A1 - van der Lugt, Aad A1 - Mosley, Thomas H. A1 - Seshadri, Sudha A1 - Smith, Albert V. A1 - Vernooij, Meike W. A1 - Blakemore, Alexandra I. F. A1 - Chiavacci, Rosetta M. A1 - Feenstra, Bjarke A1 - Fernandez-Banet, Julio A1 - Grant, Struan F. A. A1 - Hartikainen, Anna-Liisa A1 - van der Heijden, Albert J. A1 - Iniguez, Carmen A1 - Lathrop, Mark A1 - McArdle, Wendy L. A1 - Molgaard, Anne A1 - Newnham, John P. A1 - Palmer, Lyle J. A1 - Palotie, Aarno A1 - Pouta, Annneli A1 - Ring, Susan M. A1 - Sovio, Ulla A1 - Standl, Marie A1 - Uitterlinden, Andre G. A1 - Wichmann, H-Erich A1 - Vissing, Nadja Hawwa A1 - DeCarli, Charles A1 - van Duijn, Cornelia M. A1 - McCarthy, Mark I. A1 - Koppelman, Gerard H. A1 - Estivill, Xavier A1 - Hattersley, Andrew T. A1 - Melbye, Mads A1 - Bisgaard, Hans A1 - Pennell, Craig E. A1 - Widen, Elisabeth A1 - Hakonarson, Hakon A1 - Smith, George Davey A1 - Heinrich, Joachim A1 - Jarvelin, Marjo-Riitta A1 - Jaddoe, Vincent W. V. A1 - Adair, Linda S. A1 - Ang, Wei A1 - Atalay, Mustafa A1 - van Beijsterveldt, Toos A1 - Bergen, Nienke A1 - Benke, Kelly A1 - Berry, Diane J. A1 - Bradfield, Jonathan P. A1 - Charoen, Pimphen A1 - Coin, Lachlan A1 - Cousminer, Diana L. A1 - Das, Shikta A1 - Davis, Oliver S. P. A1 - Elliott, Paul A1 - Evans, David M. A1 - Feenstra, Bjarke A1 - Flexeder, Claudia A1 - Frayling, Tim A1 - Freathy, Rachel M. A1 - Gaillard, Romy A1 - Geller, Frank A1 - Groen-Blokhuis, Maria A1 - Goh, Liang-Kee A1 - Guxens, Monica A1 - Haworth, Claire M. A. A1 - Hadley, Dexter A1 - Hebebrand, Johannes A1 - Hinney, Anke A1 - Hirschhorn, Joel N. A1 - Holloway, John W. A1 - Holst, Claus A1 - Hottenga, Jouke Jan A1 - Horikoshi, Momoko A1 - Huikari, Ville A1 - Hypponen, Elina A1 - Iniguez, Carmen A1 - Kaakinen, Marika A1 - Kilpelainen, Tuomas O. A1 - Kirin, Mirna A1 - Kowgier, Matthew A1 - Lakka, Hanna-Maaria A1 - Lange, Leslie A. A1 - Lawlor, Debbie A. A1 - Lehtimaki, Terho A1 - Lewin, Alex A1 - Lindgren, Cecilia A1 - Lindi, Virpi A1 - Maggi, Reedik A1 - Marsh, Julie A1 - Middeldorp, Christel A1 - Millwood, Iona A1 - Mook-Kanamori, Dennis O. A1 - Murray, Jeffrey C. A1 - Nivard, Michel A1 - Nohr, Ellen Aagaard A1 - Ntalla, Ioanna A1 - Oken, Emily A1 - O'Reilly, Paul F. A1 - Palmer, Lyle J. A1 - Panoutsopoulou, Kalliope A1 - Pararajasingham, Jennifer A1 - Prokopenko, Inga A1 - Rodriguez, Alina A1 - Salem, Rany M. A1 - Sebert, Sylvain A1 - Siitonen, Niina A1 - Sovio, Ulla A1 - St Pourcain, Beate A1 - Strachan, David P. A1 - Sunyer, Jordi A1 - Taal, H. Rob A1 - Teo, Yik-Ying A1 - Thiering, Elisabeth A1 - Tiesler, Carla A1 - Uitterlinden, Andre G. A1 - Valcarcel, Beatriz A1 - Warrington, Nicole M. A1 - White, Scott A1 - Willemsen, Gonneke A1 - Yaghootkar, Hanieh A1 - Zeggini, Eleftheria A1 - Boomsma, Dorret I. A1 - Cooper, Cyrus A1 - Estivill, Xavier A1 - Gillman, Matthew A1 - Grant, Struan F. A. A1 - Hakonarson, Hakon A1 - Hattersley, Andrew T. A1 - Heinrich, Joachim A1 - Hocher, Berthold A1 - Jaddoe, Vincent W. V. A1 - Jarvelin, Marjo-Riitta A1 - Lakka, Timo A. A1 - McCarthy, Mark I. A1 - Melbye, Mads A1 - Mohlke, Karen L. A1 - Dedoussis, George V. A1 - Ong, Ken K. A1 - Pearson, Ewan R. A1 - Pennell, Craig E. A1 - Price, Thomas S. A1 - Power, Chris A1 - Raitakari, Olli T. A1 - Saw, Seang-Mei A1 - Scherag, Andre A1 - Simell, Olli A1 - Sorensen, Thorkild I. A. A1 - Timpson, Nicholas J. A1 - Widen, Elisabeth A1 - Wilson, James F. A1 - Ang, Wei A1 - van Beijsterveldt, Toos A1 - Bergen, Nienke A1 - Benke, Kelly A1 - Berry, Diane J. A1 - Bradfield, Jonathan P. A1 - Charoen, Pimphen A1 - Coin, Lachlan A1 - Cousminer, Diana L. A1 - Das, Shikta A1 - Elliott, Paul A1 - Evans, David M. A1 - Frayling, Tim A1 - Freathy, Rachel M. A1 - Gaillard, Romy A1 - Groen-Blokhuis, Maria A1 - Guxens, Monica A1 - Hadley, Dexter A1 - Hottenga, Jouke Jan A1 - Huikari, Ville A1 - Hypponen, Elina A1 - Kaakinen, Marika A1 - Kowgier, Matthew A1 - Lawlor, Debbie A. A1 - Lewin, Alex A1 - Lindgren, Cecilia A1 - Marsh, Julie A1 - Middeldorp, Christel A1 - Millwood, Iona A1 - Mook-Kanamori, Dennis O. A1 - Nivard, Michel A1 - O'Reilly, Paul F. A1 - Palmer, Lyle J. A1 - Prokopenko, Inga A1 - Rodriguez, Alina A1 - Sebert, Sylvain A1 - Sovio, Ulla A1 - St Pourcain, Beate A1 - Standl, Marie A1 - Strachan, David P. A1 - Sunyer, Jordi A1 - Taal, H. Rob A1 - Thiering, Elisabeth A1 - Tiesler, Carla A1 - Uitterlinden, Andre G. A1 - Valcarcel, Beatriz A1 - Warrington, Nicole M. A1 - White, Scott A1 - Willemsen, Gonneke A1 - Yaghootkar, Hanieh A1 - Boomsma, Dorret I. A1 - Estivill, Xavier A1 - Grant, Struan F. A. A1 - Hakonarson, Hakon A1 - Hattersley, Andrew T. A1 - Heinrich, Joachim A1 - Jaddoe, Vincent W. V. A1 - Jarvelin, Marjo-Riitta A1 - McCarthy, Mark I. A1 - Pennell, Craig E. A1 - Power, Chris A1 - Timpson, Nicholas J. A1 - Widen, Elisabeth A1 - Ikram, M. Arfan A1 - Fornage, Myriam A1 - Smith, Albert V. A1 - Seshadri, Sudha A1 - Schmidt, Reinhold A1 - Debette, Stephanie A1 - Vrooman, Henri A. A1 - Sigurdsson, Sigurdur A1 - Ropele, Stefan A1 - Coker, Laura H. A1 - Longstreth, W. T. A1 - Niessen, Wiro J. A1 - DeStefano, Anita L. A1 - Beiser, Alexa A1 - Zijdenbos, Alex P. A1 - Struchalin, Maksim A1 - Jack, Clifford R. A1 - Nalls, Mike A. A1 - Au, Rhoda A1 - Hofman, Albert A1 - Gudnason, Haukur A1 - van der Lugt, Aad A1 - Harris, Tamara B. A1 - Meeks, William M. A1 - Vernooij, Meike W. A1 - van Buchem, Mark A. A1 - Catellier, Diane A1 - Gudnason, Vilmundur A1 - Windham, B. Gwen A1 - Wolf, Philip A. A1 - van Duijn, Cornelia M. A1 - Mosley, Thomas H. A1 - Schmidt, Helena A1 - Launer, Lenore J. A1 - Breteler, Monique M. B. A1 - DeCarli, Charles T1 - Common variants at 12q15 and 12q24 are associated with infant head circumference JF - Nature genetics N2 - To identify genetic variants associated with head circumference in infancy, we performed a meta-analysis of seven genome-wide association studies (GWAS) (N = 10,768 individuals of European ancestry enrolled in pregnancy and/or birth cohorts) and followed up three lead signals in six replication studies (combined N = 19,089). rs7980687 on chromosome 12q24 (P = 8.1 x 10(-9)) and rs1042725 on chromosome 12q15 (P = 2.8 x 10(-10)) were robustly associated with head circumference in infancy. Although these loci have previously been associated with adult height(1), their effects on infant head circumference were largely independent of height (P = 3.8 x 10(-7) for rs7980687 and P = 1.3 x 10(-7) for rs1042725 after adjustment for infant height). A third signal, rs11655470 on chromosome 17q21, showed suggestive evidence of association with head circumference (P = 3.9 x 10(-6)). SNPs correlated to the 17q21 signal have shown genome-wide association with adult intracranial volume(2), Parkinson's disease and other neurodegenerative diseases(3-5), indicating that a common genetic variant in this region might link early brain growth with neurological disease in later life. Y1 - 2012 U6 - https://doi.org/10.1038/ng.2238 SN - 1061-4036 VL - 44 IS - 5 SP - 532 EP - + PB - Nature Publ. Group CY - New York ER - TY - JOUR A1 - Arnison, Paul G. A1 - Bibb, Mervyn J. A1 - Bierbaum, Gabriele A1 - Bowers, Albert A. A1 - Bugni, Tim S. A1 - Bulaj, Grzegorz A1 - Camarero, Julio A. A1 - Campopiano, Dominic J. A1 - Challis, Gregory L. A1 - Clardy, Jon A1 - Cotter, Paul D. A1 - Craik, David J. A1 - Dawson, Michael A1 - Dittmann-Thünemann, Elke A1 - Donadio, Stefano A1 - Dorrestein, Pieter C. A1 - Entian, Karl-Dieter A1 - Fischbach, Michael A. A1 - Garavelli, John S. A1 - Goeransson, Ulf A1 - Gruber, Christian W. A1 - Haft, Daniel H. A1 - Hemscheidt, Thomas K. A1 - Hertweck, Christian A1 - Hill, Colin A1 - Horswill, Alexander R. A1 - Jaspars, Marcel A1 - Kelly, Wendy L. A1 - Klinman, Judith P. A1 - Kuipers, Oscar P. A1 - Link, A. James A1 - Liu, Wen A1 - Marahiel, Mohamed A. A1 - Mitchell, Douglas A. A1 - Moll, Gert N. A1 - Moore, Bradley S. A1 - Mueller, Rolf A1 - Nair, Satish K. A1 - Nes, Ingolf F. A1 - Norris, Gillian E. A1 - Olivera, Baldomero M. A1 - Onaka, Hiroyasu A1 - Patchett, Mark L. A1 - Piel, Jörn A1 - Reaney, Martin J. T. A1 - Rebuffat, Sylvie A1 - Ross, R. Paul A1 - Sahl, Hans-Georg A1 - Schmidt, Eric W. A1 - Selsted, Michael E. A1 - Severinov, Konstantin A1 - Shen, Ben A1 - Sivonen, Kaarina A1 - Smith, Leif A1 - Stein, Torsten A1 - Suessmuth, Roderich D. A1 - Tagg, John R. A1 - Tang, Gong-Li A1 - Truman, Andrew W. A1 - Vederas, John C. A1 - Walsh, Christopher T. A1 - Walton, Jonathan D. A1 - Wenzel, Silke C. A1 - Willey, Joanne M. A1 - van der Donk, Wilfred A. T1 - Ribosomally synthesized and post-translationally modified peptide natural products overview and recommendations for a universal nomenclature JF - Natural product reports : a journal of current developments in bio-organic chemistry N2 - This review presents recommended nomenclature for the biosynthesis of ribosomally synthesized and post-translationally modified peptides (RiPPs), a rapidly growing class of natural products. The current knowledge regarding the biosynthesis of the >20 distinct compound classes is also reviewed, and commonalities are discussed. Y1 - 2013 U6 - https://doi.org/10.1039/c2np20085f SN - 0265-0568 VL - 30 IS - 1 SP - 108 EP - 160 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Koenig, Julian A1 - Abler, Birgit A1 - Agartz, Ingrid A1 - akerstedt, Torbjorn A1 - Andreassen, Ole A. A1 - Anthony, Mia A1 - Baer, Karl-Juergen A1 - Bertsch, Katja A1 - Brown, Rebecca C. A1 - Brunner, Romuald A1 - Carnevali, Luca A1 - Critchley, Hugo D. A1 - Cullen, Kathryn R. A1 - de Geus, Eco J. C. A1 - de la Cruz, Feliberto A1 - Dziobek, Isabel A1 - Ferger, Marc D. A1 - Fischer, Hakan A1 - Flor, Herta A1 - Gaebler, Michael A1 - Gianaros, Peter J. A1 - Giummarra, Melita J. A1 - Greening, Steven G. A1 - Guendelman, Simon A1 - Heathers, James A. J. A1 - Herpertz, Sabine C. A1 - Hu, Mandy X. A1 - Jentschke, Sebastian A1 - Kaess, Michael A1 - Kaufmann, Tobias A1 - Klimes-Dougan, Bonnie A1 - Koelsch, Stefan A1 - Krauch, Marlene A1 - Kumral, Deniz A1 - Lamers, Femke A1 - Lee, Tae-Ho A1 - Lekander, Mats A1 - Lin, Feng A1 - Lotze, Martin A1 - Makovac, Elena A1 - Mancini, Matteo A1 - Mancke, Falk A1 - Mansson, Kristoffer N. T. A1 - Manuck, Stephen B. A1 - Mather, Mara A1 - Meeten, Frances A1 - Min, Jungwon A1 - Mueller, Bryon A1 - Muench, Vera A1 - Nees, Frauke A1 - Nga, Lin A1 - Nilsonne, Gustav A1 - Ordonez Acuna, Daniela A1 - Osnes, Berge A1 - Ottaviani, Cristina A1 - Penninx, Brenda W. J. H. A1 - Ponzio, Allison A1 - Poudel, Govinda R. A1 - Reinelt, Janis A1 - Ren, Ping A1 - Sakaki, Michiko A1 - Schumann, Andy A1 - Sorensen, Lin A1 - Specht, Karsten A1 - Straub, Joana A1 - Tamm, Sandra A1 - Thai, Michelle A1 - Thayer, Julian F. A1 - Ubani, Benjamin A1 - van Der Mee, Denise J. A1 - van Velzen, Laura S. A1 - Ventura-Bort, Carlos A1 - Villringer, Arno A1 - Watson, David R. A1 - Wei, Luqing A1 - Wendt, Julia A1 - Schreiner, Melinda Westlund A1 - Westlye, Lars T. A1 - Weymar, Mathias A1 - Winkelmann, Tobias A1 - Wu, Guo-Rong A1 - Yoo, Hyun Joo A1 - Quintana, Daniel S. T1 - Cortical thickness and resting-state cardiac function across the lifespan BT - a cross-sectional pooled mega-analysis JF - Psychophysiology : journal of the Society for Psychophysiological Research N2 - Understanding the association between autonomic nervous system [ANS] function and brain morphology across the lifespan provides important insights into neurovisceral mechanisms underlying health and disease. Resting-state ANS activity, indexed by measures of heart rate [HR] and its variability [HRV] has been associated with brain morphology, particularly cortical thickness [CT]. While findings have been mixed regarding the anatomical distribution and direction of the associations, these inconsistencies may be due to sex and age differences in HR/HRV and CT. Previous studies have been limited by small sample sizes, which impede the assessment of sex differences and aging effects on the association between ANS function and CT. To overcome these limitations, 20 groups worldwide contributed data collected under similar protocols of CT assessment and HR/HRV recording to be pooled in a mega-analysis (N = 1,218 (50.5% female), mean age 36.7 years (range: 12-87)). Findings suggest a decline in HRV as well as CT with increasing age. CT, particularly in the orbitofrontal cortex, explained additional variance in HRV, beyond the effects of aging. This pattern of results may suggest that the decline in HRV with increasing age is related to a decline in orbitofrontal CT. These effects were independent of sex and specific to HRV; with no significant association between CT and HR. Greater CT across the adult lifespan may be vital for the maintenance of healthy cardiac regulation via the ANS-or greater cardiac vagal activity as indirectly reflected in HRV may slow brain atrophy. Findings reveal an important association between CT and cardiac parasympathetic activity with implications for healthy aging and longevity that should be studied further in longitudinal research. KW - aging KW - autonomic nervous system KW - cortical thickness KW - heart rate KW - heart KW - rate variability KW - sex Y1 - 2020 U6 - https://doi.org/10.1111/psyp.13688 SN - 0048-5772 SN - 1469-8986 VL - 58 IS - 7 PB - Wiley CY - Hoboken ER - TY - JOUR A1 - Meyer, Sören A1 - Matissek, M. A1 - Mueller, S. M. A1 - Taleshi, M. S. A1 - Ebert, Franziska A1 - Francesconi, Kevin A. A1 - Schwerdtle, Tanja T1 - In vitro toxicological characterisation of three arsenic-containing hydrocarbons JF - Metallomics : integrated biometal science N2 - Arsenic-containing hydrocarbons are one group of fat-soluble organic arsenic compounds (arsenolipids) found in marine fish and other seafood. A risk assessment of arsenolipids is urgently needed, but has not been possible because of the total lack of toxicological data. In this study the cellular toxicity of three arsenic-containing hydrocarbons was investigated in cultured human bladder (UROtsa) and liver (HepG2) cells. Cytotoxicity of the arsenic-containing hydrocarbons was comparable to that of arsenite, which was applied as the toxic reference arsenical. A large cellular accumulation of arsenic, as measured by ICP-MS/MS, was observed after incubation of both cell lines with the arsenolipids. Moreover, the toxic mode of action shown by the three arsenic-containing hydrocarbons seemed to differ from that observed for arsenite. Evidence suggests that the high cytotoxic potential of the lipophilic arsenicals results from a decrease in the cellular energy level. This first in vitro based risk assessment cannot exclude a risk to human health related to the presence of arsenolipids in seafood, and indicates the urgent need for further toxicity studies in experimental animals to fully assess this possible risk. Y1 - 2014 U6 - https://doi.org/10.1039/c4mt00061g SN - 1756-5901 SN - 1756-591X VL - 6 IS - 5 SP - 1023 EP - 1033 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Solly, Emily A1 - Schöning, Ingo A1 - Boch, Steffen A1 - Mueller, J. A1 - Socher, S. A. A1 - Trumbore, S. E. A1 - Schrumpf, M. T1 - Mean age of carbon in fine roots from temperate forests and grasslands with different management JF - Biogeosciences N2 - Fine roots are the most dynamic portion of a plant's root system and a major source of soil organic matter. By altering plant species diversity and composition, soil conditions and nutrient availability, and consequently belowground allocation and dynamics of root carbon (C) inputs, land-use and management changes may influence organic C storage in terrestrial ecosystems. In three German regions, we measured fine root radiocarbon (C-14) content to estimate the mean time since C in root tissues was fixed from the atmosphere in 54 grassland and forest plots with different management and soil conditions. Although root biomass was on average greater in grasslands 5.1 +/- 0.8 g (mean +/- SE, n = 27) than in forests 3.1 +/- 0.5 g (n = 27) (p < 0.05), the mean age of C in fine roots in forests averaged 11.3 +/- 1.8 yr and was older and more variable compared to grasslands 1.7 +/- 0.4 yr (p < 0.001). We further found that management affects the mean age of fine root C in temperate grasslands mediated by changes in plant species diversity and composition. Fine root mean C age is positively correlated with plant diversity (r = 0.65) and with the number of perennial species (r = 0.77). Fine root mean C age in grasslands was also affected by study region with averages of 0.7 +/- 0.1 yr (n= 9) on mostly organic soils in northern Germany and of 1.8 +/- 0.3 yr (n = 9) and 2.6 +/- 0.3 (n = 9) in central and southern Germany (p < 0.05). This was probably due to differences in soil nutrient contents and soil moisture conditions between study regions, which affected plant species diversity and the presence of perennial species. Our results indicate more long-lived roots or internal redistribution of C in perennial species and suggest linkages between fine root C age and management in grasslands. These findings improve our ability to predict and model belowground C fluxes across broader spatial scales. Y1 - 2013 U6 - https://doi.org/10.5194/bg-10-4833-2013 SN - 1726-4170 VL - 10 IS - 7 SP - 4833 EP - 4843 PB - Copernicus CY - Göttingen ER - TY - JOUR A1 - Aich, Valentin A1 - Liersch, Stefan A1 - Vetter, T. A1 - Huang, S. A1 - Tecklenburg, J. A1 - Hoffmann, P. A1 - Koch, H. A1 - Fournet, S. A1 - Krysanova, Valentina A1 - Mueller, N. A1 - Hattermann, Fred T1 - Comparing impacts of climate change on streamflow in four large African river basins JF - Hydrology and earth system sciences : HESS N2 - This study aims to compare impacts of climate change on streamflow in four large representative African river basins: the Niger, the Upper Blue Nile, the Oubangui and the Limpopo. We set up the eco-hydrological model SWIM (Soil and Water Integrated Model) for all four basins individually. The validation of the models for four basins shows results from adequate to very good, depending on the quality and availability of input and calibration data. For the climate impact assessment, we drive the model with outputs of five bias corrected Earth system models of Coupled Model Intercomparison Project Phase 5 (CMIP5) for the representative concentration pathways (RCPs) 2.6 and 8.5. This climate input is put into the context of climate trends of the whole African continent and compared to a CMIP5 ensemble of 19 models in order to test their representativeness. Subsequently, we compare the trends in mean discharges, seasonality and hydrological extremes in the 21st century. The uncertainty of results for all basins is high. Still, climate change impact is clearly visible for mean discharges but also for extremes in high and low flows. The uncertainty of the projections is the lowest in the Upper Blue Nile, where an increase in streamflow is most likely. In the Niger and the Limpopo basins, the magnitude of trends in both directions is high and has a wide range of uncertainty. In the Oubangui, impacts are the least significant. Our results confirm partly the findings of previous continental impact analyses for Africa. However, contradictory to these studies we find a tendency for increased streamflows in three of the four basins (not for the Oubangui). Guided by these results, we argue for attention to the possible risks of increasing high flows in the face of the dominant water scarcity in Africa. In conclusion, the study shows that impact intercomparisons have added value to the adaptation discussion and may be used for setting up adaptation plans in the context of a holistic approach. Y1 - 2014 U6 - https://doi.org/10.5194/hess-18-1305-2014 SN - 1027-5606 SN - 1607-7938 VL - 18 IS - 4 SP - 1305 EP - 1321 PB - Copernicus CY - Göttingen ER - TY - JOUR A1 - Piontek, J. A1 - Winkler, Lars A1 - Bal, M. S. A1 - Lassowski, Birgit A1 - Mueller, Sandra L. A1 - Gast, Klaus A1 - Blasig, Ingolf E. T1 - Investigating of homophilic interactions of the tight junction proteins occludin and claudin-5 Y1 - 2004 ER - TY - JOUR A1 - Dutta, Anushree A1 - Schürmann, Robin A1 - Kogikoski Junior, Sergio A1 - Mueller, Niclas S. A1 - Reich, Stephanie A1 - Bald, Ilko T1 - Kinetics and mechanism of plasmon-driven dehalogenation reaction of brominated purine nucleobases on Ag and Au JF - ACS catalysis / American Chemical Society N2 - Plasmon-driven photocatalysis is an emerging and promising application of noble metal nanoparticles (NPs). An understanding of the fundamental aspects of plasmon interaction with molecules and factors controlling their reaction rate in a heterogeneous system is of high importance. Therefore, the dehalogenation kinetics of 8-bromoguanine (BrGua) and 8-bromoadenine (BrAde) on aggregated surfaces of silver (Ag) and gold (Au) NPs have been studied to understand the reaction kinetics and the underlying reaction mechanism prevalent in heterogeneous reaction systems induced by plasmons monitored by surface enhanced Raman scattering (SERS). We conclude that the time-average constant concentration of hot electrons and the time scale of dissociation of transient negative ions (TNI) are crucial in defining the reaction rate law based on a proposed kinetic model. An overall higher reaction rate of dehalogenation is observed on Ag compared with Au, which is explained by the favorable hot-hole scavenging by the reaction product and the byproduct. We therefore arrive at the conclusion that insufficient hole deactivation could retard the reaction rate significantly, marking itself as rate-determining step for the overall reaction. The wavelength dependency of the reaction rate normalized to absorbed optical power indicates the nonthermal nature of the plasmon-driven reaction. The study therefore lays a general approach toward understanding the kinetics and reaction mechanism of a plasmon-driven reaction in a heterogeneous system, and furthermore, it leads to a better understanding of the reactivity of brominated purine derivatives on Ag and Au, which could in the future be exploited, for example, in plasmon-assisted cancer therapy. KW - hot-electrons KW - plasmon-driven catalysis KW - fractal kinetics KW - brominated KW - purines KW - SERS KW - hole scavengers Y1 - 2021 U6 - https://doi.org/10.1021/acscatal.1c01851 SN - 2155-5435 VL - 11 IS - 13 SP - 8370 EP - 8381 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Holldack, Karsten A1 - Ovsyannikov, Ruslan A1 - Kuske, P. A1 - Mueller, R. A1 - Schaelicke, A. A1 - Scheer, M. A1 - Gorgoi, Mihaela A1 - Kuehn, D. A1 - Leitner, T. A1 - Svensson, S. A1 - Martensson, N. A1 - Föhlisch, Alexander T1 - Single bunch X-ray pulses on demand from a multi-bunch synchrotron radiation source JF - Nature Communications N2 - Synchrotron radiation facilities routinely operate in a multi-bunch regime, but applications relying on time-of-flight schemes require single bunch operation. Here we show that pulse picking by resonant excitation in a storage ring creates in addition to the multi-bunch operation a distinct and separable single bunch soft X-ray source. It has variable polarization, a photon flux of up to 10(7)-10(9) ph s(-1)/0.1%BW at purity values of 10(4)-10(2) and a repetition rate of 1.25 MHz. The quasi-resonant excitation of incoherent betatron oscillations of electrons allows horizontal pulse separation at variable (also circular) polarization accessible for both, regular 30 ps pulses and ultrashort pulses of 2-3 ps duration. Combined with a new generation of angularly resolving electron spectrometers this creates unique opportunities for time-resolved photoemission studies as confirmed by time-of-flight spectra. Our pulse picking scheme is particularly suited for surface physics at diffraction-limited light sources promising ultimate spectral resolution. Y1 - 2014 U6 - https://doi.org/10.1038/ncomms5010 SN - 2041-1723 VL - 5 PB - Nature Publ. Group CY - London ER - TY - JOUR A1 - Meyer, Sören A1 - Raber, Georg A1 - Ebert, Franziska A1 - Leffers, L. A1 - Mueller, Sandra Maria A1 - Taleshi, M. S. A1 - Francesconi, Kevin A. A1 - Schwerdtle, Tanja T1 - In vitro toxicological characterisation of arsenic-containing fatty acids and three of their metabolites JF - Toxicology research N2 - Arsenic-containing fatty acids are a group of fat-soluble arsenic species (arsenolipids) which are present in marine fish and other seafood. Recently, it has been shown that arsenic-containing hydrocarbons, another group of arsenolipids, exert toxicity in similar concentrations comparable to arsenite although the toxic modes of action differ. Hence, a risk assessment of arsenolipids is urgently needed. In this study the cellular toxicity of a saturated (AsFA 362) and an unsaturated (AsFA 388) arsenic-containing fatty acid and three of their proposed metabolites (DMA(V), DMAPr and thio-DMAPr) were investigated in human liver cells (HepG2). Even though both arsenic-containing fatty acids were less toxic as compared to arsenic-containing hydrocarbons and arsenite, significant effects were observable at mu M concentrations. DMA(V) causes effects in a similar concentration range and it could be seen that it is metabolised to its highly toxic thio analogue thio-DMA(V) in HepG2 cells. Nevertheless, DMAPr and thio-DMAPr did not exert any cytotoxicity. In summary, our data indicate that risks to human health related to the presence of arsenic-containing fatty acids in marine food cannot be excluded. This stresses the need for a full in vitro and in vivo toxicological characterisation of these arsenolipids. Y1 - 2015 U6 - https://doi.org/10.1039/c5tx00122f SN - 2045-452X SN - 2045-4538 VL - 4 IS - 5 SP - 1289 EP - 1296 PB - Royal Society of Chemistry CY - Cambridge ER - TY - GEN A1 - Hollmann, C. A1 - Reuter, D. A1 - Werner, S. A1 - Avota, Elita A1 - Mueller, N. A1 - Japtok, Lukasz A1 - Kleuser, Burkhard A1 - Becker, Katrin Anne A1 - Gulbins, Erich A1 - Schneider-Schaulies, Jürgen A1 - Beyersdorf, Niklas T1 - Pharmacological inhibition of acid sphingomyelinase or genetic ablation enhances CD4(+) Foxp3(+) regulatory T cell activity T2 - European journal of immunology Y1 - 2016 SN - 0014-2980 SN - 1521-4141 VL - 46 SP - 14 EP - 14 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Tucker, Marlee A. A1 - Boehning-Gaese, Katrin A1 - Fagan, William F. A1 - Fryxell, John M. A1 - Van Moorter, Bram A1 - Alberts, Susan C. A1 - Ali, Abdullahi H. A1 - Allen, Andrew M. A1 - Attias, Nina A1 - Avgar, Tal A1 - Bartlam-Brooks, Hattie A1 - Bayarbaatar, Buuveibaatar A1 - Belant, Jerrold L. A1 - Bertassoni, Alessandra A1 - Beyer, Dean A1 - Bidner, Laura A1 - van Beest, Floris M. A1 - Blake, Stephen A1 - Blaum, Niels A1 - Bracis, Chloe A1 - Brown, Danielle A1 - de Bruyn, P. J. Nico A1 - Cagnacci, Francesca A1 - Calabrese, Justin M. A1 - Camilo-Alves, Constanca A1 - Chamaille-Jammes, Simon A1 - Chiaradia, Andre A1 - Davidson, Sarah C. A1 - Dennis, Todd A1 - DeStefano, Stephen A1 - Diefenbach, Duane A1 - Douglas-Hamilton, Iain A1 - Fennessy, Julian A1 - Fichtel, Claudia A1 - Fiedler, Wolfgang A1 - Fischer, Christina A1 - Fischhoff, Ilya A1 - Fleming, Christen H. A1 - Ford, Adam T. A1 - Fritz, Susanne A. A1 - Gehr, Benedikt A1 - Goheen, Jacob R. A1 - Gurarie, Eliezer A1 - Hebblewhite, Mark A1 - Heurich, Marco A1 - Hewison, A. J. Mark A1 - Hof, Christian A1 - Hurme, Edward A1 - Isbell, Lynne A. A1 - Janssen, Rene A1 - Jeltsch, Florian A1 - Kaczensky, Petra A1 - Kane, Adam A1 - Kappeler, Peter M. A1 - Kauffman, Matthew A1 - Kays, Roland A1 - Kimuyu, Duncan A1 - Koch, Flavia A1 - Kranstauber, Bart A1 - LaPoint, Scott A1 - Leimgruber, Peter A1 - Linnell, John D. C. A1 - Lopez-Lopez, Pascual A1 - Markham, A. Catherine A1 - Mattisson, Jenny A1 - Medici, Emilia Patricia A1 - Mellone, Ugo A1 - Merrill, Evelyn A1 - Mourao, Guilherme de Miranda A1 - Morato, Ronaldo G. A1 - Morellet, Nicolas A1 - Morrison, Thomas A. A1 - Diaz-Munoz, Samuel L. A1 - Mysterud, Atle A1 - Nandintsetseg, Dejid A1 - Nathan, Ran A1 - Niamir, Aidin A1 - Odden, John A1 - Oliveira-Santos, Luiz Gustavo R. A1 - Olson, Kirk A. A1 - Patterson, Bruce D. A1 - de Paula, Rogerio Cunha A1 - Pedrotti, Luca A1 - Reineking, Bjorn A1 - Rimmler, Martin A1 - Rogers, Tracey L. A1 - Rolandsen, Christer Moe A1 - Rosenberry, Christopher S. A1 - Rubenstein, Daniel I. A1 - Safi, Kamran A1 - Said, Sonia A1 - Sapir, Nir A1 - Sawyer, Hall A1 - Schmidt, Niels Martin A1 - Selva, Nuria A1 - Sergiel, Agnieszka A1 - Shiilegdamba, Enkhtuvshin A1 - Silva, Joao Paulo A1 - Singh, Navinder A1 - Solberg, Erling J. A1 - Spiegel, Orr A1 - Strand, Olav A1 - Sundaresan, Siva A1 - Ullmann, Wiebke A1 - Voigt, Ulrich A1 - Wall, Jake A1 - Wattles, David A1 - Wikelski, Martin A1 - Wilmers, Christopher C. A1 - Wilson, John W. A1 - Wittemyer, George A1 - Zieba, Filip A1 - Zwijacz-Kozica, Tomasz A1 - Mueller, Thomas T1 - Moving in the Anthropocene BT - global reductions in terrestrial mammalian movements JF - Science N2 - Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint were on average one-half to one-third the extent of their movements in areas with a low human footprint. We attribute this reduction to behavioral changes of individual animals and to the exclusion of species with long-range movements from areas with higher human impact. Global loss of vagility alters a key ecological trait of animals that affects not only population persistence but also ecosystem processes such as predator-prey interactions, nutrient cycling, and disease transmission. Y1 - 2018 U6 - https://doi.org/10.1126/science.aam9712 SN - 0036-8075 SN - 1095-9203 VL - 359 IS - 6374 SP - 466 EP - 469 PB - American Assoc. for the Advancement of Science CY - Washington ER - TY - JOUR A1 - Noonan, Michael J. A1 - Tucker, Marlee A. A1 - Fleming, Christen H. A1 - Akre, Thomas S. A1 - Alberts, Susan C. A1 - Ali, Abdullahi H. A1 - Altmann, Jeanne A1 - Antunes, Pamela Castro A1 - Belant, Jerrold L. A1 - Beyer, Dean A1 - Blaum, Niels A1 - Boehning-Gaese, Katrin A1 - Cullen Jr, Laury A1 - de Paula, Rogerio Cunha A1 - Dekker, Jasja A1 - Drescher-Lehman, Jonathan A1 - Farwig, Nina A1 - Fichtel, Claudia A1 - Fischer, Christina A1 - Ford, Adam T. A1 - Goheen, Jacob R. A1 - Janssen, Rene A1 - Jeltsch, Florian A1 - Kauffman, Matthew A1 - Kappeler, Peter M. A1 - Koch, Flavia A1 - LaPoint, Scott A1 - Markham, A. Catherine A1 - Medici, Emilia Patricia A1 - Morato, Ronaldo G. A1 - Nathan, Ran A1 - Oliveira-Santos, Luiz Gustavo R. A1 - Olson, Kirk A. A1 - Patterson, Bruce D. A1 - Paviolo, Agustin A1 - Ramalho, Emiliano Estero A1 - Rosner, Sascha A1 - Schabo, Dana G. A1 - Selva, Nuria A1 - Sergiel, Agnieszka A1 - da Silva, Marina Xavier A1 - Spiegel, Orr A1 - Thompson, Peter A1 - Ullmann, Wiebke A1 - Zieba, Filip A1 - Zwijacz-Kozica, Tomasz A1 - Fagan, William F. A1 - Mueller, Thomas A1 - Calabrese, Justin M. T1 - A comprehensive analysis of autocorrelation and bias in home range estimation JF - Ecological monographs : a publication of the Ecological Society of America. N2 - Home range estimation is routine practice in ecological research. While advances in animal tracking technology have increased our capacity to collect data to support home range analysis, these same advances have also resulted in increasingly autocorrelated data. Consequently, the question of which home range estimator to use on modern, highly autocorrelated tracking data remains open. This question is particularly relevant given that most estimators assume independently sampled data. Here, we provide a comprehensive evaluation of the effects of autocorrelation on home range estimation. We base our study on an extensive data set of GPS locations from 369 individuals representing 27 species distributed across five continents. We first assemble a broad array of home range estimators, including Kernel Density Estimation (KDE) with four bandwidth optimizers (Gaussian reference function, autocorrelated‐Gaussian reference function [AKDE], Silverman's rule of thumb, and least squares cross‐validation), Minimum Convex Polygon, and Local Convex Hull methods. Notably, all of these estimators except AKDE assume independent and identically distributed (IID) data. We then employ half‐sample cross‐validation to objectively quantify estimator performance, and the recently introduced effective sample size for home range area estimation ( N̂ area ) to quantify the information content of each data set. We found that AKDE 95% area estimates were larger than conventional IID‐based estimates by a mean factor of 2. The median number of cross‐validated locations included in the hold‐out sets by AKDE 95% (or 50%) estimates was 95.3% (or 50.1%), confirming the larger AKDE ranges were appropriately selective at the specified quantile. Conversely, conventional estimates exhibited negative bias that increased with decreasing N̂ area. To contextualize our empirical results, we performed a detailed simulation study to tease apart how sampling frequency, sampling duration, and the focal animal's movement conspire to affect range estimates. Paralleling our empirical results, the simulation study demonstrated that AKDE was generally more accurate than conventional methods, particularly for small N̂ area. While 72% of the 369 empirical data sets had >1,000 total observations, only 4% had an N̂ area >1,000, where 30% had an N̂ area <30. In this frequently encountered scenario of small N̂ area, AKDE was the only estimator capable of producing an accurate home range estimate on autocorrelated data. KW - animal movement KW - kernel density estimation KW - local convex hull KW - minimum convex polygon KW - range distribution KW - space use KW - telemetry KW - tracking data Y1 - 2018 U6 - https://doi.org/10.1002/ecm.1344 SN - 0012-9615 SN - 1557-7015 VL - 89 IS - 2 PB - Wiley CY - Hoboken ER - TY - JOUR A1 - Zibulski, Romy A1 - Herzschuh, Ulrike A1 - Pestryakova, Luidmila Agafyevna A1 - Wolter, Juliane A1 - Mueller, S. A1 - Schilling, N. A1 - Wetterich, Sebastian A1 - Schirrmeister, Lutz A1 - Tian, Fang T1 - River flooding as a driver of polygon dynamics: modern vegetation data and a millennial peat record from the Anabar River lowlands (Arctic Siberia) JF - Biogeosciences N2 - The spatial and temporal variability of a low-centred polygon on the eastern floodplain area of the lower Anabar River (72.070 degrees N, 113.921 degrees E; northern Yakutia, Siberia) has been investigated using a multi-method approach. The present-day vegetation in each square metre was analysed, revealing a community of Larix, shrubby Betula, and Salix on the polygon rim, a dominance of Carex and Andromeda polifolia in the rim-to-pond transition zone, and a predominantly monospecific Scorpidium scorpioides coverage within the pond. The total organic carbon (TOC) content, TOC/TN (total nitrogen) ratio, grain size, vascular plant macrofossils, moss remains, diatoms, and pollen were analysed for two vertical sections and a sediment core from a transect across the polygon. Radiocarbon dating indicates that the formation of the polygon started at least 1500 yr ago; the general positions of the pond and rim have not changed since that time. Two types of pond vegetation were identified, indicating two contrasting development stages of the polygon. The first was a well-established moss association, dominated by submerged or floating Scorpidium scorpioides and/or Drepanocladus spp. and overgrown by epiphytic diatoms such as Tabellaria flocculosa and Eunotia taxa. This stage coincides temporally with a period in which the polygon was only drained by lateral subsurface water flow, as indicated by mixed grain sizes. A different moss association occurred during times of repeated river flooding (indicated by homogeneous medium-grained sand that probably accumulated during the annual spring snowmelt), characterized by an abundance of Meesia triquetra and a dominance of benthic diatoms (e. g. Navicula vulpina), indicative of a relatively high pH and a high tolerance of disturbance. A comparison of the local polygon vegetation (inferred from moss and macrofossil spectra) with the regional vegetation (inferred from pollen spectra) indicated that the moss association with Scorpidium scorpioides became established during relatively favourable climatic conditions, while the association dominated by Meesia triquetra occurred during periods of harsh climatic conditions. Our study revealed a strong riverine influence (in addition to climatic influences) on polygon development and the type of peat accumulated. Y1 - 2013 U6 - https://doi.org/10.5194/bg-10-5703-2013 SN - 1726-4170 VL - 10 IS - 8 SP - 5703 EP - 5728 PB - Copernicus CY - Göttingen ER - TY - GEN A1 - Omidbakhshfard, Mohammad Amin A1 - Neerakkal, Sujeeth A1 - Gupta, Saurabh A1 - Omranian, Nooshin A1 - Guinan, Kieran J. A1 - Brotman, Yariv A1 - Nikoloski, Zoran A1 - Fernie, Alisdair R. A1 - Mueller-Roeber, Bernd A1 - Gechev, Tsanko S. T1 - A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress T2 - Postprints der Universität Potsdam : Mathematisch Naturwissenschaftliche Reihe N2 - Abiotic stresses cause oxidative damage in plants. Here, we demonstrate that foliar application of an extract from the seaweed Ascophyllum nodosum, SuperFifty (SF), largely prevents paraquat (PQ)-induced oxidative stress in Arabidopsis thaliana. While PQ-stressed plants develop necrotic lesions, plants pre-treated with SF (i.e., primed plants) were unaffected by PQ. Transcriptome analysis revealed induction of reactive oxygen species (ROS) marker genes, genes involved in ROS-induced programmed cell death, and autophagy-related genes after PQ treatment. These changes did not occur in PQ-stressed plants primed with SF. In contrast, upregulation of several carbohydrate metabolism genes, growth, and hormone signaling as well as antioxidant-related genes were specific to SF-primed plants. Metabolomic analyses revealed accumulation of the stress-protective metabolite maltose and the tricarboxylic acid cycle intermediates fumarate and malate in SF-primed plants. Lipidome analysis indicated that those lipids associated with oxidative stress-induced cell death and chloroplast degradation, such as triacylglycerols (TAGs), declined upon SF priming. Our study demonstrated that SF confers tolerance to PQ-induced oxidative stress in A. thaliana, an effect achieved by modulating a range of processes at the transcriptomic, metabolic, and lipid levels. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 823 KW - Ascophyllum nodosum KW - Arabidopsis thaliana KW - biostimulant KW - paraquat KW - priming KW - oxidative stress tolerance KW - reactive oxygen species Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-445093 SN - 1866-8372 IS - 823 ER - TY - JOUR A1 - Repasch, Marisa A1 - Scheingross, Joel S. A1 - Hovius, Niels A1 - Vieth-Hillebrand, Andrea A1 - Mueller, Carsten W. A1 - Höschen, Carmen A1 - Szupiany, Ricardo N. A1 - Sachse, Dirk T1 - River organic carbon fluxes modulated by hydrodynamic sorting of particulate organic matter JF - Geophysical research letters N2 - Rivers regulate the global carbon cycle by transferring particulate organic carbon (POC) from terrestrial landscapes to marine sedimentary basins, but the processes controlling the amount and composition of fluvially exported POC are poorly understood. We propose that hydrodynamic sorting processes modify POC fluxes during fluvial transit. We test this hypothesis by studying POC transported along a similar to 1,200 km reach of the Rio Bermejo, Argentina. Nanoscale secondary ion mass spectrometry revealed that POC was either fine, mineral-associated organic matter, or coarse discrete organic particles. Mineral-associated POC is more resistant to oxidation and has a lower particle settling velocity than discrete POC. Consequently, hydraulic sorting and downstream fining amplify the proportion of fine, mineral-associated POC from similar to 55% to similar to 78% over 1,220 km of downstream transit. This suggests that mineral-associated POC has a greater probability of export and preservation in marine basins than plant detritus, which may be oxidized to CO2 during transit. KW - compound-specific stable isotopes KW - carbon fluxes KW - rivers KW - NanoSIMS; KW - sediment transport KW - hydrodynamic sorting Y1 - 2022 U6 - https://doi.org/10.1029/2021GL096343 SN - 0094-8276 SN - 1944-8007 VL - 49 IS - 3 PB - American Geophysical Union CY - Washington ER - TY - JOUR A1 - Heger, Tina A1 - Bernard-Verdier, Maud A1 - Gessler, Arthur A1 - Greenwood, Alex D. A1 - Grossart, Hans-Peter A1 - Hilker, Monika A1 - Keinath, Silvia A1 - Kowarik, Ingo A1 - Küffer, Christoph A1 - Marquard, Elisabeth A1 - Mueller, Johannes A1 - Niemeier, Stephanie A1 - Onandia, Gabriela A1 - Petermann, Jana S. A1 - Rillig, Matthias C. A1 - Rodel, Mark-Oliver A1 - Saul, Wolf-Christian A1 - Schittko, Conrad A1 - Tockner, Klement A1 - Joshi, Jasmin Radha A1 - Jeschke, Jonathan M. T1 - Towards an Integrative, Eco-Evolutionary Understanding of Ecological Novelty: Studying and Communicating Interlinked Effects of Global Change JF - Bioscience N2 - Global change has complex eco-evolutionary consequences for organisms and ecosystems, but related concepts (e.g., novel ecosystems) do not cover their full range. Here we propose an umbrella concept of "ecological novelty" comprising (1) a site-specific and (2) an organism-centered, eco-evolutionary perspective. Under this umbrella, complementary options for studying and communicating effects of global change on organisms, ecosystems, and landscapes can be included in a toolbox. This allows researchers to address ecological novelty from different perspectives, e.g., by defining it based on (a) categorical or continuous measures, (b) reference conditions related to sites or organisms, and (c) types of human activities. We suggest striving for a descriptive, non-normative usage of the term "ecological novelty" in science. Normative evaluations and decisions about conservation policies or management are important, but require additional societal processes and engagement with multiple stakeholders. KW - Anthropocene KW - eco-evolutionary experience KW - global change KW - novel ecosystems KW - shifting baselines Y1 - 2019 U6 - https://doi.org/10.1093/biosci/biz095 SN - 0006-3568 SN - 1525-3244 VL - 69 IS - 11 SP - 888 EP - 899 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Omidbakhshfard, Mohammad Amin A1 - Neerakkal, Sujeeth A1 - Gupta, Saurabh A1 - Omranian, Nooshin A1 - Guinan, Kieran J. A1 - Brotman, Yariv A1 - Nikoloski, Zoran A1 - Fernie, Alisdair R. A1 - Mueller-Roeber, Bernd A1 - Gechev, Tsanko S. T1 - A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress JF - International Journal of Molecular Sciences N2 - Abiotic stresses cause oxidative damage in plants. Here, we demonstrate that foliar application of an extract from the seaweed Ascophyllum nodosum, SuperFifty (SF), largely prevents paraquat (PQ)-induced oxidative stress in Arabidopsis thaliana. While PQ-stressed plants develop necrotic lesions, plants pre-treated with SF (i.e., primed plants) were unaffected by PQ. Transcriptome analysis revealed induction of reactive oxygen species (ROS) marker genes, genes involved in ROS-induced programmed cell death, and autophagy-related genes after PQ treatment. These changes did not occur in PQ-stressed plants primed with SF. In contrast, upregulation of several carbohydrate metabolism genes, growth, and hormone signaling as well as antioxidant-related genes were specific to SF-primed plants. Metabolomic analyses revealed accumulation of the stress-protective metabolite maltose and the tricarboxylic acid cycle intermediates fumarate and malate in SF-primed plants. Lipidome analysis indicated that those lipids associated with oxidative stress-induced cell death and chloroplast degradation, such as triacylglycerols (TAGs), declined upon SF priming. Our study demonstrated that SF confers tolerance to PQ-induced oxidative stress in A. thaliana, an effect achieved by modulating a range of processes at the transcriptomic, metabolic, and lipid levels. KW - Ascophyllum nodosum KW - Arabidopsis thaliana KW - biostimulant KW - paraquat KW - priming KW - oxidative stress tolerance KW - reactive oxygen species Y1 - 2019 U6 - https://doi.org/10.3390/ijms21020474 SN - 1422-0067 VL - 21 IS - 2 PB - Molecular Diversity Preservation International CY - Basel ER - TY - JOUR A1 - Geirhos, Agnes A1 - Domhardt, Matthias A1 - Lunkenheimer, Frederike A1 - Temming, Svenja A1 - Holl, Reinhard A1 - Minden, Kirsten A1 - Warschburger, Petra A1 - Meissner, Thomas A1 - Mueller-Stierlin, Annabel S. A1 - Baumeister, Harald T1 - Feasibility and potential efficacy of a guided internet- and mobile-based CBT for adolescents and young adults with chronic medical conditions and comorbid depression or anxiety symptoms (youthCOACH(CD)): a randomized controlled pilot trial JF - BMC pediatrics N2 - Background: Adolescents and young adults (AYA) with a chronic medical condition show an increased risk for developing mental comorbidities compared to their healthy peers. Internet- and mobile-based cognitive behavioral therapy (iCBT) might be a low-threshold treatment to support affected AYA. In this randomized controlled pilot trial, the feasibility and potential efficacy of youthCOACH(CD), an iCBT targeting symptoms of anxiety and depression in AYA with chronic medical conditions, was evaluated. Methods: A total of 30 AYA (M-age 16.13; SD= 2.34; 73% female), aged 12-21 years either suffering from cystic fibrosis, juvenile idiopathic arthritis or type 1 diabetes, were randomly assigned to either a guided version of the iCBT youthCOACH(CD) (IC, n=15) or to a waitlist control group (CG, n=15), receiving an unguided version of the iCBT six months post-randomization. Participants of the IG and the CG were assessed before (t0), twelve weeks after (t1) and six months after (t2) randomization. Primary outcome was the feasibility of the iCBT. Different parameters of feasibility e.g. acceptance, client satisfaction or potential side effects were evaluated. First indications of the possible efficacy with regard to the primary efficacy outcome, the Patient Health Questionnaire Anxiety and Depression Scale, and further outcome variables were evaluated using linear regression models, adjusting for baseline values. Results: Regarding feasibility, intervention completion was 60%; intervention satisfaction (M = 25.42, SD = 5.85) and perceived therapeutic alliance (M = 2.83, SD = 1.25) were moderate and comparable to other iCBTs. No patterns emerged regarding subjective and objective negative side effects due to participation in youthCOACH(CD). Estimates of potential efficacy showed between group differences, with a potential medium-term benefit of youthCOACH(CD) (beta = -0.55, 95%Cl: -1.17; 0.07), but probably not short-term (beta = 0.20, 95%Cl: -0.47; 0.88). Conclusions: Our results point to the feasibility of youthCOACH(CD) and the implementation of a future definitive randomized controlled trial addressing its effectiveness and cost-effectiveness. Due to the small sample size, conclusions are premature, however, further strategies to foster treatment adherence should be considered. KW - Chronic medical condition KW - Depression KW - Anxiety KW - Internet- and mobile KW - based intervention KW - Cognitive behavioral therapy KW - Randomized controlled KW - pilot trial KW - Type 1 diabetes KW - Cystic fibrosis KW - Juvenile idiopathic KW - arthritis Y1 - 2022 U6 - https://doi.org/10.1186/s12887-022-03134-3 SN - 1471-2431 VL - 22 IS - 1 PB - Springer Nature CY - London ER -