FN Archimer Export Format
PT J
TI Microscopic charcoals in ocean sediments off Africa track past fire intensity from the continent
BT 
AF Haliuc, Aritina
   Daniau, Anne-Laure
   Mouillot, Florent
   Chen, Wentao
   Leys, Bérangère
   David, Valérie
   Hanquiez, Vincent
   Dennielou, Bernard
   Schefuß, Enno
   Bayon, Germain
   Crosta, Xavier
AS 1:1;2:1;3:2;4:2;5:3;6:1;7:1;8:4;9:5;10:4;11:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:PDG-REM-GEOOCEAN-ASTRE;9:;10:PDG-REM-GEOOCEAN-ASTRE;11:;
C1 University Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600, Pessac, France
   UMR CEFE, University Montpellier, CNRS, EPHE, IRD, Univ. Paul Valery Montpellier 3, 1919 route de Mende, 34293, Montpellier, CEDEX 5, France
   Aix Marseille University, Avignon University, CNRS, IRD, IMBE, Aix Technopole de l’environnement Arbois Méditerranée Avenue Louis Philibert - Batiment Villemin, 13545, Aix-en-Provence, Cedex 4, France
   University Brest, CNRS, Ifremer, Geo-Ocean, F-29280, Plouzané, France
   MARUM – Center for Marine Environmental Sciences, University of Bremen, Leobener Strasse 8, 28359, Bremen, Germany
C2 UNIV BORDEAUX, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
   IFREMER, FRANCE
   UNIV BREMEN MARUM, GERMANY
SI BREST
SE PDG-REM-GEOOCEAN-ASTRE
UM GEO-OCEAN
IN WOS Ifremer UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 7.9
TC 2
UR https://archimer.ifremer.fr/doc/00834/94612/101993.pdf
   https://archimer.ifremer.fr/doc/00834/94612/101994.pdf
   https://archimer.ifremer.fr/doc/00834/94612/101995.pdf
LA English
DT Article
CR CONGOLOBE
   NAUSICAA-IMAGES 2-MD105
   ZAIANGO
   ZAIANGO1
   ZAIANGO2
   ZAIANGOROV
BO Pourquoi pas ?
   Marion Dufresne
   L'Atalante
AB Fires in Africa account for more than half of global fire-carbon emissions but the long-term evolution of fire activity and its link to global climate change remains elusive. Paleofire records provide descriptive information about fire changes through time, going beyond the range of satellite observations, although fire regime characteristics are challenging to reconstruct. To address this conceptual gap, we report here the abundance and morphometric data for a large set of microscopic charcoal samples (n = 128) recovered from surface ocean sediments offshore Africa. We show that in subtropical Southern Africa, large and intense fires prevailing in open savanna-grassland ecosystems produce a high abundance of small and elongated microcharcoal particles. In contrast, in the forest ecosystems of equatorial and tropical regions of western and central Africa, low-intensity fires dominate, producing low amounts of squared microcharcoal particles. Microcharcoal concentration and morphotype in marine sediment records off Africa are thus indicative of fire regime characteristics. Applied to down-core marine charcoal records, these findings reveal that at orbital time-scale intense and large, open grassland-savanna fires occurred during wet periods in the sub-tropical areas. A strong contribution of fire carbon emissions during periods of precession and summer insolation maxima in the geological record is thus expected. 
PY 2023
PD APR
SO Communications Earth & Environment
SN 2662-4435
PU Springer Science and Business Media LLC
VL 4
IS 1
UT 000975284100001
DI 10.1038/s43247-023-00800-x
ID 94612
ER

EF