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Asynchronous carbon sink saturation in African and Amazonian tropical forests 期刊论文
NATURE, 2020, 579 (7797) : 80-+
作者:  Wannes Hubau;  Simon L. Lewis;  Oliver L. Phillips;  Kofi Affum-Baffoe;  Hans Beeckman;  Aida Cuní;  -Sanchez;  Armandu K. Daniels;  Corneille E. N. Ewango;  Sophie Fauset;  Jacques M. Mukinzi;  Douglas Sheil;  Bonaventure Sonké;  Martin J. P. Sullivan;  Terry C. H. Sunderland;  Hermann Taedoumg;  Sean C. Thomas;  Lee J. T. White;  Katharine A. Abernethy;  Stephen Adu-Bredu;  Christian A. Amani;  Timothy R. Baker;  Lindsay F. Banin;  Fidè;  le Baya;  Serge K. Begne;  Amy C. Bennett;  Fabrice Benedet;  Robert Bitariho;  Yannick E. Bocko;  Pascal Boeckx;  Patrick Boundja;  Roel J. W. Brienen;  Terry Brncic;  Eric Chezeaux;  George B. Chuyong;  Connie J. Clark;  Murray Collins;  James A. Comiskey;  David A. Coomes;  Greta C. Dargie;  Thales de Haulleville;  Marie Noel Djuikouo Kamdem;  Jean-Louis Doucet;  Adriane Esquivel-Muelbert;  Ted R. Feldpausch;  Alusine Fofanah;  Ernest G. Foli;  Martin Gilpin;  Emanuel Gloor;  Christelle Gonmadje;  Sylvie Gourlet-Fleury;  Jefferson S. Hall;  Alan C. Hamilton;  David J. Harris;  Terese B. Hart;  Mireille B. N. Hockemba;  Annette Hladik;  Suspense A. Ifo;  Kathryn J. Jeffery;  Tommaso Jucker;  Emmanuel Kasongo Yakusu;  Elizabeth Kearsley;  David Kenfack;  Alexander Koch;  Miguel E. Leal;  Aurora Levesley;  Jeremy A. Lindsell;  Janvier Lisingo;  Gabriela Lopez-Gonzalez;  Jon C. Lovett;  Jean-Remy Makana;  Yadvinder Malhi;  Andrew R. Marshall;  Jim Martin;  Emanuel H. Martin;  Faustin M. Mbayu;  Vincent P. Medjibe;  Vianet Mihindou;  Edward T. A. Mitchard;  Sam Moore;  Pantaleo K. T. Munishi;  Natacha Nssi Bengone;  Lucas Ojo;  Fidè;  le Evouna Ondo;  Kelvin S.-H. Peh;  Georgia C. Pickavance;  Axel Dalberg Poulsen;  John R. Poulsen;  Lan Qie;  Jan Reitsma;  Francesco Rovero;  Michael D. Swaine;  Joey Talbot;  James Taplin;  David M. Taylor;  Duncan W. Thomas;  Benjamin Toirambe;  John Tshibamba Mukendi;  Darlington Tuagben;  Peter M. Umunay;  Geertje M. F. van der Heijden;  Hans Verbeeck;  Jason Vleminckx;  Simon Willcock;  Hannsjö;  rg Wö;  ll;  John T. Woods;  Lise Zemagho
收藏  |  浏览/下载:23/0  |  提交时间:2020/05/13

Structurally intact tropical forests sequestered about half of the global terrestrial carbon uptake over the 1990s and early 2000s, removing about 15 per cent of anthropogenic carbon dioxide emissions(1-3). Climate-driven vegetation models typically predict that this tropical forest '  carbon sink'  will continue for decades(4,5). Here we assess trends in the carbon sink using 244 structurally intact African tropical forests spanning 11 countries, compare them with 321 published plots from Amazonia and investigate the underlying drivers of the trends. The carbon sink in live aboveground biomass in intact African tropical forests has been stable for the three decades to 2015, at 0.66 tonnes of carbon per hectare per year (95 per cent confidence interval 0.53-0.79), in contrast to the long-term decline in Amazonian forests(6). Therefore the carbon sink responses of Earth'  s two largest expanses of tropical forest have diverged. The difference is largely driven by carbon losses from tree mortality, with no detectable multi-decadal trend in Africa and a long-term increase in Amazonia. Both continents show increasing tree growth, consistent with the expected net effect of rising atmospheric carbon dioxide and air temperature(7-9). Despite the past stability of the African carbon sink, our most intensively monitored plots suggest a post-2010 increase in carbon losses, delayed compared to Amazonia, indicating asynchronous carbon sink saturation on the two continents. A statistical model including carbon dioxide, temperature, drought and forest dynamics accounts for the observed trends and indicates a long-term future decline in the African sink, whereas the Amazonian sink continues to weaken rapidly. Overall, the uptake of carbon into Earth'  s intact tropical forests peaked in the 1990s. Given that the global terrestrial carbon sink is increasing in size, independent observations indicating greater recent carbon uptake into the Northern Hemisphere landmass(10) reinforce our conclusion that the intact tropical forest carbon sink has already peaked. This saturation and ongoing decline of the tropical forest carbon sink has consequences for policies intended to stabilize Earth'  s climate.


  
Sensitivity of Deep Ocean Mixing to Local Internal Tide Breaking and Mixing Efficiency 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Cimoli, Laura;  Caulfield, Colm-cille P.;  Johnson, Helen L.;  Marshall, David P.;  Mashayek, Ali;  Naveira Garabato, Alberto C.;  Vic, Clement
收藏  |  浏览/下载:10/0  |  提交时间:2020/02/17
AMOC sensitivity to surface buoyancy fluxes: the role of air-sea feedback mechanisms 期刊论文
CLIMATE DYNAMICS, 2019, 53: 4521-4537
作者:  Kostov, Yavor;  Johnson, Helen L.;  Marshall, David P.
收藏  |  浏览/下载:5/0  |  提交时间:2019/11/27
North Atlantic  Meridional overturning circulation  Surface heat flux  Surface freshwater flux  Seasonality  Sensitivity  Mixed layer  
Northern red oak regeneration: 25-year results of cutting and prescribed fire in Michigan oak and pine stands 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 429: 467-479
作者:  Granger, Joshua J.;  Buckley, David S.;  Sharik, Terry L.;  Zobel, John M.;  DeBord, William W.;  Hartman, Jason P.;  Henning, Jason G.;  Keyser, Tara L.;  Marshall, Jordan M.
收藏  |  浏览/下载:10/0  |  提交时间:2019/04/09
Quercus rubra L.  Deer browsing  Frost damage  Pinus resinosa Sol. ex. Aiton.  Acer rubrum L.  
Impacts of Atmospheric Reanalysis Uncertainty on Atlantic Overturning Estimates at 25 degrees N 期刊论文
JOURNAL OF CLIMATE, 2018, 31 (21) : 8719-8744
作者:  Pillar, Helen R.;  Johnson, Helen L.;  Marshall, David P.;  Heimbach, Patrick;  Takao, So
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
Mobile measurement of methane emissions from natural gas developments in northeastern British Columbia, Canada 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2017, 17 (20)
作者:  Atherton, Emmaline;  Risk, David;  Fougere, Chelsea;  Lavoie, Martin;  Marshall, Alex;  Werring, John;  Williams, James P.;  Minions, Christina
收藏  |  浏览/下载:9/0  |  提交时间:2019/04/09
The impact of Southern Ocean residual upwelling on atmospheric CO2 on centennial and millennial timescales 期刊论文
CLIMATE DYNAMICS, 2017, 48
作者:  Lauderdale, Jonathan M.;  Williams, Richard G.;  Munday, David R.;  Marshall, David P.
收藏  |  浏览/下载:3/0  |  提交时间:2019/04/09
Southern Ocean  Atmospheric carbon dioxide  Ocean overturning  Ocean residual circulation  Ocean upwelling  Ocean carbon cycle  Climate metric  
Merging paleobiology with conservation biology to guide the future of terrestrial ecosystems 期刊论文
SCIENCE, 2017, 355 (6325)
作者:  Barnosky, Anthony D.;  Hadly, Elizabeth A.;  Gonzalez, Patrick;  Head, Jason;  Polly, P. David;  Lawing, A. Michelle;  Eronen, Jussi T.;  Ackerly, David D.;  Alex, Ken;  Biber, Eric;  Blois, Jessica;  Brashares, Justin;  Ceballos, Gerardo;  Davis, Edward;  Dietl, Gregory P.;  Dirzo, Rodolfo;  Doremus, Holly;  Fortelius, Mikael;  Greene, Harry W.;  Hellmann, Jessica;  Hickler, Thomas;  Jackson, Stephen T.;  Kemp, Melissa;  Koch, Paul L.;  Kremen, Claire;  Lindsey, Emily L.;  Looy, Cindy;  Marshall, Charles R.;  Mendenhall, Chase;  Mulch, Andreas;  Mychajliw, Alexis M.;  Nowak, Carsten;  Ramakrishnan, Uma;  Schnitzler, Jan;  Das Shrestha, Kashish;  Solari, Katherine;  Stegner, Lynn;  Stegner, M. Allison;  Stenseth, Nils Chr;  Wake, Marvalee H.;  Zhang, Zhibin
收藏  |  浏览/下载:12/0  |  提交时间:2019/11/27
Eddy saturation and frictional control of the Antarctic Circumpolar Current 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2017, 44 (1)
作者:  Marshall, David P.;  Ambaum, Maarten H. P.;  Maddison, James R.;  Munday, David R.;  Novak, Lenka
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/09
ocean eddies  eddy saturation  bottom drag  Antarctic Circumpolar Current  ocean stratification  heat content