Details

Autor(en) / Beteiligte

• 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
• Morón, Sara
• Green, Walton
• Bayona, German
• Montes, Camilo
• Quintero, Oscar
• Ramirez, Rafael
• Mora, Germán
• Schouten, Stefan
• Bermudez, Hermann
• Navarrete, Rosa
• Parra, Francisco
• Alvarán, Mauricio
• Osorno, Jose
• Crowley, James L
• Valencia, Victor
• Vervoort, Jeff

Titel

Effects of Rapid Global Warming at the Paleocene-Eocene Boundary on Neotropical Vegetation

Ist Teil von

• Science (American Association for the Advancement of Science), 2010-11, Vol.330 (6006), p.957-961

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2010

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• Temperatures in tropical regions are estimated to have increased by 3° to 5°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.