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No. de sistema: 000036760

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 100615m20099999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
245 0 0 a| Climate drying and associated forest decline in the lowlands of northern Guatemala during the late Holocene
520 1 _ a| Palynological studies document forest disappearance during the late Holocene in the tropical Maya lowlands of northern Guatemala. The question remains as to whether this vegetation change was driven exclusively by anthropogenic deforestation, as previously suggested, or whether it was partly attributable to climate changes. We report multiple palaeoclimate and palaeoenvironment proxies (pollen, geochemical, sedimentological) from sediment cores collected in Lake Petén Itzá, northern Guatemala. Our data indicate that the earliest phase of late Holocene tropical forest reduction in this area started at not, vert, similar 4500 cal yr BP, simultaneous with the onset of a circum-Caribbean drying trend that lasted for not, vert, similar 1500 yr. This forest decline preceded the appearance of anthropogenically associated Zea mays pollen. We conclude that vegetation changes in Petén during the period from not, vert, similar 4500 to not, vert, similar 3000 cal yr BP were largely a consequence of dry climate conditions. Furthermore, palaeoclimate data from low latitudes in North Africa point to teleconnective linkages of this drying trend on both sides of the Atlantic Ocean.
650 _ 4 a| Cuaternario
650 _ 4 a| Paleoclimatología
650 _ 4 a| Deforestación
650 _ 4 a| Paleoambiental
650 _ 4 a| Sedimentos fluviales
650 _ 4 a| Bosques tropicales
651 _ 4 a| Lago Petén Itzá (Petén, Guatemala)
700 1 _ a| Mueller, Andreas D.
700 1 _ a| Islebe, Gerald A.
c| Doctor
e| coaut.
700 1 _ a| Hillesheim, Michael B.
e| coaut.
700 1 _ a| Grzesik, Dustin A.
e| coaut.
700 1 _ a| Anselmetti, Flavio S.
e| coaut.
700 1 _ a| Ariztegui, Daniel
e| coaut.
700 1 _ a| Brenner, Mark
e| coaut.
700 1 _ a| Curtis, Jason H.
e| coaut.
700 1 _ a| Hodell, David A.
e| coaut.
700 1 _ a| Venz, Kathryn A.
e| coaut.
773 0 _
t| Quaternary Research
g| Vol. 71, no. 2 (March, 2009), p. 133-141
x| 0033-5894
902 _ _ a| Pizaña/Brenda
904 _ _ a| Junio 2010
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Desastres
905 _ _ a| Servibosques
905 _ _ a| Biblioelectrónica
LNG eng
Cerrar
Climate drying and associated forest decline in the lowlands of northern Guatemala during the late Holocene
Mueller, Andreas D. (autor)
Islebe, Gerald A. (autor)
Hillesheim, Michael B. (autor)
Grzesik, Dustin A. (autor)
Anselmetti, Flavio S. (autor)
Ariztegui, Daniel (autor)
Brenner, Mark (autor)
Curtis, Jason H. (autor)
Hodell, David A. (autor)
Venz, Kathryn A. (autor)
Contenido en: Quaternary Research. Vol. 71, no. 2 (March, 2009), p. 133-141. ISSN: 0033-5894
No. de sistema: 36760
Tipo: Artículo
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Inglés

"Palynological studies document forest disappearance during the late Holocene in the tropical Maya lowlands of northern Guatemala. The question remains as to whether this vegetation change was driven exclusively by anthropogenic deforestation, as previously suggested, or whether it was partly attributable to climate changes. We report multiple palaeoclimate and palaeoenvironment proxies (pollen, geochemical, sedimentological) from sediment cores collected in Lake Petén Itzá, northern Guatemala. Our data indicate that the earliest phase of late Holocene tropical forest reduction in this area started at not, vert, similar 4500 cal yr BP, simultaneous with the onset of a circum-Caribbean drying trend that lasted for not, vert, similar 1500 yr. This forest decline preceded the appearance of anthropogenically associated Zea mays pollen. We conclude that vegetation changes in Petén during the period from not, vert, similar 4500 to not, vert, similar 3000 cal yr BP were largely a consequence of dry climate conditions. Furthermore, palaeoclimate data from low latitudes in North Africa point to teleconnective linkages of this drying trend on both sides of the Atlantic Ocean."