TY - JOUR
T1 - Imprint of eastern Indian Ocean surface oceanography on modern organic-walled dinoflagellate cyst assemblages
AU - Hessler, Ines
AU - Young, Martin
AU - Holzwarth, Ulrike
AU - Mohtadi, Mahyar
AU - Lückge, Andreas
AU - Behling, Hermann
PY - 2013/5
Y1 - 2013/5
N2 - Assemblages of organic-walled dinoflagellate cysts (dinocysts) from 116 marine surface samples have been analysed to assess the relationship between the spatial distribution of dinocysts and modern local environmental conditions [e.g. sea surface temperature (SST), sea surface salinity (SSS), productivity] in the eastern Indian Ocean. Results from the percentage analysis and statistical methods such as multivariate ordination analysis and end-member modelling, indicate the existence of three distinct environmental and oceanographic regions in the study area. Region 1 is located in western and eastern Indonesia and controlled by high SSTs and a low nutrient content of the surface waters. The Indonesian Throughflow (ITF) region (Region 2) is dominated by heterotrophic dinocyst species reflecting the region's high productivity. Region 3 is encompassing the area offshore north-west and west Australia which is characterised by the water masses of the Leeuwin Current, a saline and nutrient depleted southward current featuring energetic eddies.
AB - Assemblages of organic-walled dinoflagellate cysts (dinocysts) from 116 marine surface samples have been analysed to assess the relationship between the spatial distribution of dinocysts and modern local environmental conditions [e.g. sea surface temperature (SST), sea surface salinity (SSS), productivity] in the eastern Indian Ocean. Results from the percentage analysis and statistical methods such as multivariate ordination analysis and end-member modelling, indicate the existence of three distinct environmental and oceanographic regions in the study area. Region 1 is located in western and eastern Indonesia and controlled by high SSTs and a low nutrient content of the surface waters. The Indonesian Throughflow (ITF) region (Region 2) is dominated by heterotrophic dinocyst species reflecting the region's high productivity. Region 3 is encompassing the area offshore north-west and west Australia which is characterised by the water masses of the Leeuwin Current, a saline and nutrient depleted southward current featuring energetic eddies.
KW - Eastern Indian Ocean
KW - Marine surface sediments
KW - Organic-walled dinoflagellate cysts
KW - Sea surface conditions
UR - http://www.scopus.com/inward/record.url?scp=84879103575&partnerID=8YFLogxK
U2 - 10.1016/j.marmicro.2013.02.005
DO - 10.1016/j.marmicro.2013.02.005
M3 - Article
AN - SCOPUS:84879103575
SN - 0377-8398
VL - 101
SP - 89
EP - 105
JO - Marine Micropaleontology
JF - Marine Micropaleontology
ER -