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  • Articles  (3)
  • Atmosphere  (3)
  • American Association for the Advancement of Science (AAAS)  (3)
  • Oxford University Press
  • 1
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    Drought sensitivity of the Amazon rainforest (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-03-07
    Description: Amazon forests are a key but poorly understood component of the global carbon cycle. If, as anticipated, they dry this century, they might accelerate climate change through carbon losses and changed surface energy balances. We used records from multiple long-term monitoring plots across Amazonia to assess forest responses to the intense 2005 drought, a possible analog of future events. Affected forest lost biomass, reversing a large long-term carbon sink, with the greatest impacts observed where the dry season was unusually intense. Relative to pre-2005 conditions, forest subjected to a 100-millimeter increase in water deficit lost 5.3 megagrams of aboveground biomass of carbon per hectare. The drought had a total biomass carbon impact of 1.2 to 1.6 petagrams (1.2 x 10(15) to 1.6 x 10(15) grams). Amazon forests therefore appear vulnerable to increasing moisture stress, with the potential for large carbon losses to exert feedback on climate change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, Oliver L -- Aragao, Luiz E O C -- Lewis, Simon L -- Fisher, Joshua B -- Lloyd, Jon -- Lopez-Gonzalez, Gabriela -- Malhi, Yadvinder -- Monteagudo, Abel -- Peacock, Julie -- Quesada, Carlos A -- van der Heijden, Geertje -- Almeida, Samuel -- Amaral, Ieda -- Arroyo, Luzmila -- Aymard, Gerardo -- Baker, Tim R -- Banki, Olaf -- Blanc, Lilian -- Bonal, Damien -- Brando, Paulo -- Chave, Jerome -- de Oliveira, Atila Cristina Alves -- Cardozo, Nallaret Davila -- Czimczik, Claudia I -- Feldpausch, Ted R -- Freitas, Maria Aparecida -- Gloor, Emanuel -- Higuchi, Niro -- Jimenez, Eliana -- Lloyd, Gareth -- Meir, Patrick -- Mendoza, Casimiro -- Morel, Alexandra -- Neill, David A -- Nepstad, Daniel -- Patino, Sandra -- Penuela, Maria Cristina -- Prieto, Adriana -- Ramirez, Fredy -- Schwarz, Michael -- Silva, Javier -- Silveira, Marcos -- Thomas, Anne Sota -- Steege, Hans Ter -- Stropp, Juliana -- Vasquez, Rodolfo -- Zelazowski, Przemyslaw -- Alvarez Davila, Esteban -- Andelman, Sandy -- Andrade, Ana -- Chao, Kuo-Jung -- Erwin, Terry -- Di Fiore, Anthony -- Honorio C, Euridice -- Keeling, Helen -- Killeen, Tim J -- Laurance, William F -- Pena Cruz, Antonio -- Pitman, Nigel C A -- Nunez Vargas, Percy -- Ramirez-Angulo, Hirma -- Rudas, Agustin -- Salamao, Rafael -- Silva, Natalino -- Terborgh, John -- Torres-Lezama, Armando -- New York, N.Y. -- Science. 2009 Mar 6;323(5919):1344-7. doi: 10.1126/science.1164033.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecology and Global Change, School of Geography, University of Leeds, Leeds LS2 9JT, UK. o.phillips@leeds.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19265020" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; *Biomass ; Brazil ; Carbon ; Carbon Dioxide ; Climate ; *Droughts ; *Ecosystem ; South America ; *Trees/growth & development ; Tropical Climate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Effects of rapid global warming at the Paleocene-Eocene boundary on neotropical vegetation (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-11-13
    Description: Temperatures in tropical regions are estimated to have increased by 3 degrees to 5 degrees C, compared with Late Paleocene values, during the Paleocene-Eocene Thermal Maximum (PETM, 56.3 million years ago) event. We investigated the tropical forest response to this rapid warming by evaluating the palynological record of three stratigraphic sections in eastern Colombia and western Venezuela. We observed a rapid and distinct increase in plant diversity and origination rates, with a set of new taxa, mostly angiosperms, added to the existing stock of low-diversity Paleocene flora. There is no evidence for enhanced aridity in the northern Neotropics. The tropical rainforest was able to persist under elevated temperatures and high levels of atmospheric carbon dioxide, in contrast to speculations that tropical ecosystems were severely compromised by heat stress.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jaramillo, Carlos -- Ochoa, Diana -- Contreras, Lineth -- Pagani, Mark -- Carvajal-Ortiz, Humberto -- Pratt, Lisa M -- Krishnan, Srinath -- Cardona, Agustin -- Romero, Millerlandy -- Quiroz, Luis -- Rodriguez, Guillermo -- Rueda, Milton J -- de la Parra, Felipe -- Moron, Sara -- Green, Walton -- Bayona, German -- Montes, Camilo -- Quintero, Oscar -- Ramirez, Rafael -- Mora, German -- Schouten, Stefan -- Bermudez, Hermann -- Navarrete, Rosa -- Parra, Francisco -- Alvaran, Mauricio -- Osorno, Jose -- Crowley, James L -- Valencia, Victor -- Vervoort, Jeff -- New York, N.Y. -- Science. 2010 Nov 12;330(6006):957-61. doi: 10.1126/science.1193833.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancon, Republic of Panama. jaramilloc@si.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21071667" target="_blank"〉PubMed〈/a〉
    Keywords: Angiosperms ; Atmosphere ; Biodiversity ; Carbon Dioxide ; Colombia ; *Ecosystem ; Extinction, Biological ; *Global Warming ; *Plants ; Pollen ; Spores ; Temperature ; Time ; *Trees ; *Tropical Climate ; Venezuela
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    A call for deep-ocean stewardship (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-05-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mengerink, Kathryn J -- Van Dover, Cindy L -- Ardron, Jeff -- Baker, Maria -- Escobar-Briones, Elva -- Gjerde, Kristina -- Koslow, J Anthony -- Ramirez-Llodra, Eva -- Lara-Lopez, Ana -- Squires, Dale -- Sutton, Tracey -- Sweetman, Andrew K -- Levin, Lisa A -- New York, N.Y. -- Science. 2014 May 16;344(6185):696-8. doi: 10.1126/science.1251458.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Environmental Law Institute, Washington, DC 20036, USA. Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, CA 92093-0202, USA. ; Marine Laboratory, Duke University, Beaufort, NC 28516, USA. ; Institute for Advanced Sustainability Studies, Potsdam, Germany. ; National Oceanography Centre, University of Southampton, Southampton, UK. ; Universidad Nacional Autonoma de Mexico, ICML, Mexico. ; Wycliffe Management, 05510 Warsaw, Poland. ; Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, CA 92093-0202, USA. ; Norwegian Institute for Water Research (NIVA), Oslo, Norway. ; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia. ; University of California San Diego, La Jolla, CA 92093, USA. ; Oceanographic Center, College of Oceanography, Nova Southeastern University, Dania Beach, FL 33004, USA. ; International Research Institute of Stavanger, Norway. ; Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, CA 92093-0202, USA. llevin@ucsd.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24833377" target="_blank"〉PubMed〈/a〉
    Keywords: *Air Pollutants ; Atmosphere ; Biodiversity ; *Carbon Dioxide ; Conservation of Natural Resources/*methods ; Minerals ; Mining ; Oceans and Seas ; *Seawater
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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