Benthic foraminiferal response to orbital-scale variability in primary productivity off the Portuguese margin over the last 1.3 Myr

doi:10.1016/j.palaeo.2021.110532

NIGPAS OpenIR

	Benthic foraminiferal response to orbital-scale variability in primary productivity off the Portuguese margin over the last 1.3 Myr
通讯作者	Li, Baohua(bh-li@nigpas.ac.cn)
	Guo, Qimei 1,2; Kim, Jin-Kyoung 3; Singh, Arun D.4; Yu, Jing 5; Li, Baohua 1,2,3
	2021-09-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	577 页码:13
摘要	Detailed analyses of benthic foraminiferal fauna and planktonic foraminiferal stable carbon isotopes at IODP Site U1391 were performed to reconstruct orbital-scale variability in primary productivity off the Portuguese margin over the last 1.3 Myr. Q-mode factor analysis of benthic foraminiferal census data from the >250 mu m fraction reveals four assemblages, which is mainly controlled by the organic matter flux to the seafloor deriving from surface water productivity. The Sphaeroidina bulloides assemblage accounts for nearly half of the total variance, consisting of S. bulloides, the agglutinated taxa and Lenticulina as major components and Cibicidoides robertsonianus, Planulina ariminensis and Uvigerina peregrina parva as subsidiary species. Cibicidoides wuellerstorfi and Bulimina mexicana are important accessory species of the Cibicidoides pachyderma-dominated assemblage. The miliolids assemblage is dominated by miliolids and B. mexicana with Uvigerina mediterranea as the important associated species. The Praeglobobulimina ovata assemblage is represented by P. ovata along with Globobulimina affinis, Melonis pompiloides, Melonis barleeanum and U. peregrina parva as important accessory species. High productivity often occurs during the interglacial stages and is characterized by the S. bulloides assemblage with subsidiary P. ovata assemblage, while low productivity often occurs during the glacial stages and is marked by the miliolids assemblage and the C. pachyderma assemblage. In addition to the distinct glacial/interglacial variations, there is a long-term decreasing trend in primary productivity recorded by benthic foraminifera, which is supported by a broadly increasing trend in the sediment redness (a*). Continuous wavelet analysis of high productivity-related Factor 1 loading (the S. bulloides assemblage) suggests that variations in primary productivity have a middle Pleistocene transition (MPT)-related shift in cyclicity from the similar to 41-kyr dominant cycle prior to the MPT to the similar to 100-kyr dominant cycle after the MPT. Cross-spectral analyses between the Factor 1 loading record and delta O-18 of Globigerina bulloides reveal the control of global ice volume changes on primary productivity. The high coherency between the Factor 1 loading record and delta C-13 of G. bulloides on the glacial/interglacial timescale suggests that primary productivity off the Portuguese margin may be largely affected by nutrient availability which was related to the Iberian surface hydrographic changes associated with changes in global ice volume.
关键词	Benthic foraminiferal turnover Surface water productivity Western Iberian margin Middle-to-late Pleistocene High-latitude forcing
DOI	10.1016/j.palaeo.2021.110532
收录类别	SCI
语种	英语
关键词[WOS]	MEDITERRANEAN OUTFLOW WATER ; SURFACE OCEAN PRODUCTIVITY ; WESTERN IBERIAN MARGIN ; NORTH-ATLANTIC ; CONTINENTAL-MARGIN ; EARLY-PLEISTOCENE ; DISSOLVED-OXYGEN ; STABLE-ISOTOPE ; GULF ; DEEP
资助项目	Chinese Academy of Sciences (CAS) Strategic Priority Project[XDB26000000] ; National Natural Science Foundation of China[41276044] ; National Natural Science Foundation of China[41776073] ; National Natural Science Foundation of China[41806069] ; State Key Laboratory of Palaeobiology and Stratigraphy[20182104] ; Ministry of Ocean and Fisheries Korea
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000678383100009
项目资助者	Chinese Academy of Sciences (CAS) Strategic Priority Project ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; Ministry of Ocean and Fisheries Korea
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/38464
通讯作者	Li, Baohua
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 4.Banaras Hindu Univ, Ctr Adv Study Geol, Varanasi 221005, Uttar Pradesh, India 5.Jiangxi Bur Geol & Mineral Resources, Jiujiang 332000, Peoples R China
推荐引用方式 GB/T 7714	Guo, Qimei,Kim, Jin-Kyoung,Singh, Arun D.,et al. Benthic foraminiferal response to orbital-scale variability in primary productivity off the Portuguese margin over the last 1.3 Myr[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,577:13.
APA	Guo, Qimei,Kim, Jin-Kyoung,Singh, Arun D.,Yu, Jing,&Li, Baohua.(2021).Benthic foraminiferal response to orbital-scale variability in primary productivity off the Portuguese margin over the last 1.3 Myr.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,577,13.
MLA	Guo, Qimei,et al."Benthic foraminiferal response to orbital-scale variability in primary productivity off the Portuguese margin over the last 1.3 Myr".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 577(2021):13.