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No. de sistema: 000058841

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008 _ _ 180427m20189999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
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245 0 0 a| Climate forcings on vegetation of the southeastern Yucatán Peninsula (Mexico) during the middle to late Holocene
506 _ _ a| Acceso electrónico sólo para usuarios de ECOSUR
520 1 _ a| Climate and vegetation history from the Yucatán Peninsula, southeastern Mexico, are inferred from a mangrove sediment core deposited between the middle and late Holocene (~5600–1700 cal yr B.P.) in the Rio Hondo Delta. Fossil pollen and concentrations of Ca and Fe and Ca/Fe ratio in sediments are used to record changes in vegetation and climate. Palaeoecological and palaeoclimatic interpretations obtained from pollen abundances and associations and Fe/Ca ratio coincide with dynamics of major global forcings of climate change like ITCZ, ENSO and global cooling. Mesic conditions enabled tropical forest expansion during the middle Holocene (~5600–3650 cal yr B.P.), although there were periodic dry episodes at ~5200 cal yr B.P. and at ~4300 cal yr B.P. that caused disturbance and enabled herbaceous vegetation to expand. Changes in sedi- mentation and a gradual change from semi-evergreen to dry tropical forest occurred at ~3650 cal yr B.P., with increasing ENSO activity and southward migration of the ITCZ during transition of the middle to late Holocene. The driest period and lowest forest cover occurred between ~2600 and 2000 cal yr B.P. Data show that over the last two millennia, influence of the ENSO on southeastern Mexico is stronger compared to other proxy-records of climate variability from the Caribbean region.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Cambio climático
650 _ 4 a| Polen fósil
650 _ 4 a| Geoquímica
650 _ 4 a| Cuaternario
650 _ 4 a| Paleoecología
651 _ 4 a| Yucatán (Península) (México)
651 _ 4 a| Río Hondo
700 1 _ a| Aragón Moreno, Alejandro Antonio
700 1 _ a| Islebe, Gerald A.
c| Doctor
e| coaut.
700 1 _ a| Roy, Priyadarsi D.
e| coaut.
700 1 _ a| Torrescano Valle, Nuria
e| coaut.
700 1 _ a| Mueller, Andreas D.
e| coaut.
773 0 _
t| Palaeogeography, Palaeoclimatology, Palaeoecology
g| Vol. 495 (April 2018), p. 214-226
x| 0031-0182
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Abril 2018
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Biblioelectrónica
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*Solicítelo con su bibliotecario/a
Climate forcings on vegetation of the southeastern Yucatán Peninsula (Mexico) during the middle to late Holocene
Aragón Moreno, Alejandro Antonio (autor)
Islebe, Gerald A. (autor)
Roy, Priyadarsi D. (autor)
Torrescano Valle, Nuria (autor)
Mueller, Andreas D. (autor)
Nota: Acceso electrónico sólo para usuarios de ECOSUR
Contenido en: Palaeogeography, Palaeoclimatology, Palaeoecology. Vol. 495 (April 2018), p. 214-226. ISSN: 0031-0182
No. de sistema: 58841
Tipo: - Artículo con arbitraje
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Inglés

"Climate and vegetation history from the Yucatán Peninsula, southeastern Mexico, are inferred from a mangrove sediment core deposited between the middle and late Holocene (~5600–1700 cal yr B.P.) in the Rio Hondo Delta. Fossil pollen and concentrations of Ca and Fe and Ca/Fe ratio in sediments are used to record changes in vegetation and climate. Palaeoecological and palaeoclimatic interpretations obtained from pollen abundances and associations and Fe/Ca ratio coincide with dynamics of major global forcings of climate change like ITCZ, ENSO and global cooling. Mesic conditions enabled tropical forest expansion during the middle Holocene (~5600–3650 cal yr B.P.), although there were periodic dry episodes at ~5200 cal yr B.P. and at ~4300 cal yr B.P. that caused disturbance and enabled herbaceous vegetation to expand. Changes in sedi- mentation and a gradual change from semi-evergreen to dry tropical forest occurred at ~3650 cal yr B.P., with increasing ENSO activity and southward migration of the ITCZ during transition of the middle to late Holocene. The driest period and lowest forest cover occurred between ~2600 and 2000 cal yr B.P. Data show that over the last two millennia, influence of the ENSO on southeastern Mexico is stronger compared to other proxy-records of climate variability from the Caribbean region."


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