Artículo
Linked canopy, climate, and faunal change in the Cenozoic of Patagonia
Dunn, Regan E.; Strömberg, Caroline A. E.; Madden, Richard R.; Khon, Matthew J.; Carlini, Alfredo Armando
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Fecha de publicación:
01/2015
Editorial:
American Association For The Advancement Of Science
Revista:
Science
ISSN:
1095-9203
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Vegetation structure is a key determinant of ecosystems and ecosystem function, but paleoecological techniques to quantify it are lacking. We present a method for reconstructing leaf area index (LAI) based on light-dependent morphology of leaf epidermal cells and phytoliths derived from them. Using this proxy, we reconstruct LAI for the Cenozoic (49 million to 11 million years ago) of middle-latitude Patagonia. Our record shows that dense forests opened up by the late Eocene; open forests and shrubland habitats then fluctuated, with a brief middle-Miocene regreening period. Furthermore, endemic herbivorous mammals show accelerated tooth crown height evolution during open, yet relatively grass-free, shrubland habitat intervals. Our Patagonian LAI record provides a high-resolution, sensitive tool with which to dissect terrestrial ecosystem response to changing Southern Ocean conditions during the Cenozoic.
Palabras clave:
Palaeoclima
,
Faunal Change
,
Tertiary
,
Patagonia
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Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Dunn, Regan E.; Strömberg, Caroline A. E.; Madden, Richard R.; Khon, Matthew J.; Carlini, Alfredo Armando; Linked canopy, climate, and faunal change in the Cenozoic of Patagonia; American Association For The Advancement Of Science; Science; 347; 6219; 1-2015; 258-261
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