Millennial-scale changes in vegetation records from tropical Africa and South America during the last glacial

Hessler, Ines (author)

Dupont, Lydie (author)

Bonnefille, Raymonde (author)

Behling, Hermann (author)

Gonzalez, Catalina (author)

Helmens, Karin F. (author): Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)

Hooghiemstra, Henry (author)

Lebamba, Judicael (author)

Ledru, Marie-Pierre (author)

Lezine, Anne-Marie (author)

Maley, Jean (author)

Marret, Fabienne (author)

Vincens, Annie (author)

(creator_code:org_t)

Elsevier BV, 2010
2010
English.
In: Quaternary Science Reviews. - : Elsevier BV. - 0277-3791 .- 1873-457X. ; 29:21-22, s. 2882-2899

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

To reconstruct the response of vegetation to abrupt climate changes during the last glacial we have compiled pollen records from the circum-Atlantic tropics between 23 degrees N and 23 degrees S from both marine and terrestrial sediment cores. Pollen data were grouped into mega-biomes to facilitate the comparison between the different records. Most tropical African records do not appear to register Dansgaard-Oeschger (D-O) variability, although there are vegetation changes during Heinrich Stadials (HS). There is a stronger signal of D-O and HS variability in the South American records. Records close to the modern northern and southern limits of the Intertropical Convergence Zone (ITCZ) show opposite trends in vegetation development during HS and D-O cycles. The pollen data from tropical South America corroborate the hypothesis of a southward shift in the migration pattern of the ITCZ and a reduction in the Atlantic Meridional Overturning Circulation (AMOC) during HS.

By the author/editor: Hessler, Ines; Dupont, Lydie; Bonnefille, Raym ...; Behling, Hermann; Gonzalez, Catali ...; Helmens, Karin F ...; show more...; Hooghiemstra, He ...; Lebamba, Judicae ...; Ledru, Marie-Pie ...; Lezine, Anne-Mar ...; Maley, Jean; Marret, Fabienne; Vincens, Annie; show less...

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