FN Archimer Export Format
PT J
TI Millennial-scale vegetation changes in the tropical Andes using ecological grouping and ordination methods
BT 
AF URREGO, Dunia H.
   HOOGHIEMSTRA, Henry
   RAMA-CORREDOR, Oscar
   MARTRAT, Belen
   GRIMALT, Joan O.
   THOMPSON, Lonnie
   BUSH, Mark B.
   GONZALEZ-CARRANZA, Zaire
   HANSELMAN, Jennifer
   VALENCIA, Bryan
   VELASQUEZ-RUIZ, Cesar
AS 1:1;2:2;3:3;4:3;5:3;6:4,5;7:6;8:2;9:7;10:6;11:8;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 Univ Exeter, Geog, Coll Life & Environm Sci, Exeter, Devon, England.
   Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Amsterdam, Netherlands.
   IDAEA CSIC, Dept Environm Chem, Barcelona, Spain.
   Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA.
   Ohio State Univ, Byrd Polar & Climate Res Ctr, Columbus, OH 43210 USA.
   Florida Inst Technol, Dept Biol Sci, Melbourne, FL 32901 USA.
   Westfield State Univ, Dept Biol, Westfield, MA USA.
   Univ Nacl Colombia, Biosci Sch, Sede Medellin, Colombia.
C2 UNIV EXETER, ENGLAND
   UNIV AMSTERDAM, NETHERLANDS
   IDAEA CSIC, SPAIN
   UNIV OHIO STATE, USA
   UNIV OHIO STATE, USA
   FLORIDA INST TECHNOL, USA
   UNIV WESTFIELD STATE, USA
   UNIV NACL COLOMBIA, COLOMBIA
IN DOAJ
IF 3.543
TC 10
UR https://archimer.ifremer.fr/doc/00421/53285/54277.pdf
   https://archimer.ifremer.fr/doc/00421/53285/54278.pdf
LA English
DT Article
CR MD 132 / P.I.C.A.S.S.O.-IMAGES11
BO Marion Dufresne
AB We compare eight pollen records reflecting climatic and environmental change from northern and southern sites in the tropical Andes. Our analysis focuses on the last 30 000 years, with particular emphasis on the Pleistocene to Holocene transition. We explore ecological grouping and downcore ordination results as two approaches for extracting environmental variability from pollen records. We also use the records of aquatic and shoreline vegetation as markers for lake level fluctuations and moisture availability. Our analysis focuses on the signature of millennial-scale climate variability in the tropical Andes, in particular Heinrich stadials (HS) and Greenland interstadials (GI). The pollen records show an overall warming trend during the Pleistocene-Holocene transition, but the onset of post-glacial warming differs in timing among records. We identify rapid responses of the tropical vegetation to millennial-scale climate variability. The signatures of HS and the Younger Dryas are generally recorded as downslope upper forest line (UFL) migrations in our transect, and are likely linked to air temperature cooling. The GI1 signal is overall comparable between northern and southern records and indicates upslope UFL migrations and warming in the tropical Andes. Our marker for lake level changes indicated a north-to-south difference that could be related to moisture availability. The air temperature signature recorded by the Andean vegetation was consistent with millennial-scale cryosphere and sea surface temperature changes but suggests a potential difference between the magnitude of temperature change in the ocean and the atmosphere. We also show that arboreal pollen percentage (AP %) and detrended correspondence analysis (DCA) scores are two complementary approaches to extract environmental variability from pollen records. 
PY 2016
SO Climate Of The Past
SN 1814-9324
PU Copernicus Gesellschaft Mbh
VL 12
IS 3
UT 000376072300007
BP 697
EP 711
DI 10.5194/cp-12-697-2016
ID 53285
ER

EF