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Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litter and methodologies, adding major uncertainty to syntheses, comparisons and meta-analyses across different experiments and sites. In the TeaComposition initiative, the potential litter decomposition is investigated by using standardized substrates (Rooibos and Green tea) for comparison of litter mass loss at 336 sites (ranging from −9 to +26 °C MAT and from 60 to 3113 mm MAP) across different ecosystems. In this study we tested the effect of climate (temperature and moisture), litter type and land-use on early stage decomposition (3 months) across nine biomes. We show that litter quality was the predominant controlling factor in early stage litter decomposition, which explained about 65% of the variability in litter decomposition at a global scale. The effect of climate, on the other hand, was not litter specific and explained <0.5% of the variation for Green tea and 5% for Rooibos tea, and was of significance only under unfavorable decomposition conditions (i.e. xeric versus mesic environments). When the data were aggregated at the biome scale, climate played a significant role on decomposition of both litter types (explaining 64% of the variation for Green tea and 72% for Rooibos tea). No significant effect of land-use on early stage litter decomposition was noted within the temperate biome. Our results indicate that multiple drivers are affecting early stage litter mass loss with litter quality being dominant. In order to be able to quantify the relative importance of the different drivers over time, long-term studies combined with experimental trials are needed.
Djukic I., Kepfer-Rojas S., Schmidt I.K., Larsen K.S., Beier C., Berg B., et al. (2018). Early stage litter decomposition across biomes. SCIENCE OF THE TOTAL ENVIRONMENT, 628-629, 1369-1394 [10.1016/j.scitotenv.2018.01.012].
Early stage litter decomposition across biomes
Djukic I.;Kepfer-Rojas S.;Schmidt I. K.;Larsen K. S.;Beier C.;Berg B.;Verheyen K.;Caliman A.;Paquette A.;Gutierrez-Giron A.;Humber A.;Valdecantos A.;Petraglia A.;Alexander H.;Augustaitis A.;Saillard A.;Fernandez A. C. R.;Sousa A. I.;Lillebo A. I.;da Rocha Gripp A.;Francez A. -J.;Fischer A.;Bohner A.;Malyshev A.;Andric A.;Smith A.;Stanisci A.;Seres A.;Schmidt A.;Avila A.;Probst A.;Ouin A.;Khuroo A. A.;Verstraeten A.;Palabral-Aguilera A. N.;Stefanski A.;Gaxiola A.;Muys B.;Bosman B.;Ahrends B.;Parker B.;Sattler B.;Yang B.;Jurani B.;Erschbamer B.;Ortiz C. E. R.;Christiansen C. T.;Carol Adair E.;Meredieu C.;Mony C.;Nock C. A.;Chen C. -L.;Wang C. -P.;Baum C.;Rixen C.;Delire C.;Piscart C.;Andrews C.;Rebmann C.;Branquinho C.;Polyanskaya D.;Delgado D. F.;Wundram D.;Radeideh D.;Ordonez-Regil E.;Crawford E.;Preda E.;Tropina E.;Groner E.;Lucot E.;Hornung E.;Gacia E.;Levesque E.;Benedito E.;Davydov E. A.;Ampoorter E.;Bolzan F. P.;Varela F.;Kristofel F.;Maestre F. T.;Maunoury-Danger F.;Hofhansl F.;Kitz F.;Sutter F.;Cuesta F.;de Almeida Lobo F.;de Souza F. L.;Berninger F.;Zehetner F.;Wohlfahrt G.;Vourlitis G.;Carreno-Rocabado G.;Arena G.;Pinha G. D.;Gonzalez G.;Canut G.;Lee H.;Verbeeck H.;Auge H.;Pauli H.;Nacro H. B.;Bahamonde H. A.;Feldhaar H.;Jager H.;Serrano H. C.;Verheyden H.;Bruelheide H.;Meesenburg H.;Jungkunst H.;Jactel H.;Shibata H.;Kurokawa H.;Rosas H. L.;Rojas Villalobos H. L.;Yesilonis I.;Melece I.;Van Halder I.;Quiros I. G.;Makelele I.;Senou I.;Fekete I.;Mihal I.;Ostonen I.;Borovska J.;Roales J.;Shoqeir J.;Lata J. -C.;Theurillat J. -P.;Probst J. -L.;Zimmerman J.;Vijayanathan J.;Tang J.;Thompson J.;Dolezal J.;Sanchez-Cabeza J. -A.;Merlet J.;Henschel J.;Neirynck J.;Knops J.;Loehr J.;von Oppen J.;Thorlaksdottir J. S.;Loffler J.;Cardoso-Mohedano J. -G.;Benito-Alonso J. -L.;Torezan J. M.;Morina J. C.;Jimenez J. J.;Quinde J. D.;Alatalo J.;Seeber J.;Stadler J.;Kriiska K.;Coulibaly K.;Fukuzawa K.;Szlavecz K.;Gerhatova K.;Lajtha K.;Kappeler K.;Jennings K. A.;Tielborger K.;Hoshizaki K.;Green K.;Ye L.;Pazianoto L. H. R.;Dienstbach L.;Williams L.;Yahdjian L.;Brigham L. M.;van den Brink L.;Rustad L.;Zhang L.;Morillas L.;Xiankai L.;Carneiro L. S.;Di Martino L.;Villar L.;Bader M. Y.;Morley M.;Lebouvier M.;Tomaselli M.;Sternberg M.;Schaub M.;Santos-Reis M.;Glushkova M.;Torres M. G. A.;Giroux M. -A.;de Graaff M. -A.;Pons M. -N.;Bauters M.;Mazon M.;Frenzel M.;Didion M.;Wagner M.;Hamid M.;Lopes M. L.;Apple M.;Schadler M.;Weih M.;Gualmini M.;Vadeboncoeur M. A.;Bierbaumer M.;Danger M.;Liddell M.;Mirtl M.;Scherer-Lorenzen M.;Ruzek M.;Carbognani M.;Di Musciano M.;Matsushita M.;Zhiyanski M.;Puscas M.;Barna M.;Ataka M.;Jiangming M.;Alsafran M.;Carnol M.;Barsoum N.;Tokuchi N.;Eisenhauer N.;Lecomte N.;Filippova N.;Holzel N.;Ferlian O.;Romero O.;Pinto O. B.;Peri P.;Weber P.;Vittoz P.;Turtureanu P. D.;Fleischer P.;Macreadie P.;Haase P.;Reich P.;Petrik P.;Choler P.;Marmonier P.;Muriel P.;Ponette Q.;Guariento R. D.;Canessa R.;Kiese R.;Hewitt R.;Ronn R.;Adrian R.;Kanka R.;Weigel R.;Gatti R. C.;Martins R. L.;Georges R.;Meneses R. I.;Gavilan R. G.;Dasgupta S.;Wittlinger S.;Puijalon S.;Freda S.;Suzuki S.;Charles S.;Gogo S.;Drollinger S.;Mereu S.;Wipf S.;Trevathan-Tackett S.;Lofgren S.;Stoll S.;Trogisch S.;Hoeber S.;Seitz S.;Glatzel S.;Milton S. J.;Dousset S.;Mori T.;Sato T.;Ise T.;Hishi T.;Kenta T.;Nakaji T.;Michelan T. S.;Camboulive T.;Mozdzer T. J.;Scholten T.;Spiegelberger T.;Zechmeister T.;Kleinebecker T.;Hiura T.;Enoki T.;Ursu T. -M.;di Cella U. M.;Hamer U.;Klaus V. H.;Rego V. M.;Di Cecco V.;Busch V.;Fontana V.;Piscova V.;Carbonell V.;Ochoa V.;Bretagnolle V.;Maire V.;Farjalla V.;Zhou W.;Luo W.;McDowell W. H.;Hu Y.;Utsumi Y.;Kominami Y.;Zaika Y.;Rozhkov Y.;Kotroczo Z.;Toth Z.
2018
Abstract
Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litter and methodologies, adding major uncertainty to syntheses, comparisons and meta-analyses across different experiments and sites. In the TeaComposition initiative, the potential litter decomposition is investigated by using standardized substrates (Rooibos and Green tea) for comparison of litter mass loss at 336 sites (ranging from −9 to +26 °C MAT and from 60 to 3113 mm MAP) across different ecosystems. In this study we tested the effect of climate (temperature and moisture), litter type and land-use on early stage decomposition (3 months) across nine biomes. We show that litter quality was the predominant controlling factor in early stage litter decomposition, which explained about 65% of the variability in litter decomposition at a global scale. The effect of climate, on the other hand, was not litter specific and explained <0.5% of the variation for Green tea and 5% for Rooibos tea, and was of significance only under unfavorable decomposition conditions (i.e. xeric versus mesic environments). When the data were aggregated at the biome scale, climate played a significant role on decomposition of both litter types (explaining 64% of the variation for Green tea and 72% for Rooibos tea). No significant effect of land-use on early stage litter decomposition was noted within the temperate biome. Our results indicate that multiple drivers are affecting early stage litter mass loss with litter quality being dominant. In order to be able to quantify the relative importance of the different drivers over time, long-term studies combined with experimental trials are needed.
Djukic I., Kepfer-Rojas S., Schmidt I.K., Larsen K.S., Beier C., Berg B., et al. (2018). Early stage litter decomposition across biomes. SCIENCE OF THE TOTAL ENVIRONMENT, 628-629, 1369-1394 [10.1016/j.scitotenv.2018.01.012].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/869286
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.
