Planktic foraminiferal responses to orbital scale oceanographic changes off the western Iberian margin over the last 900kyr: Results from IODP site U1391

New Insights Into the Surface‐Ocean Dynamics of the Northeastern Atlantic Ocean Across the Marine Isotope Stage 7

“…Earlier studies from the Iberian Margin have used these two species as proxies for deciphering the meridional shifts in polar/sub‐polar fronts through time (e.g., Singh et al., 2015, 2023; Vautravers & Shackleton, 2006; Voelker et al., 2009). The abundance variations of G. bulloides and G. glutinata are good indicators of changes in surface productivity and nutrient conditions, as both the species proliferate in the eastern boundary upwelling conditions of the North Atlantic Ocean (e.g., Ottens, 1992; Salgueiro et al., 2008; Singh et al., 2015, 2023; Vautravers & Shackleton, 2006; Wilke et al., 2009). The abundance record of G. inflata combined with N. incompta indicates the PC influence (Salgueiro et al., 2008; Singh et al., 2015, 2023; Vautravers & Shackleton, 2006), because these species show strong correspondence to the North Atlantic Transitional water mass (e.g., Chapman, 2010; Ottens, 1992; Pflaumann et al., 1996).…”

“…The abundance variations of G. bulloides and G. glutinata are good indicators of changes in surface productivity and nutrient conditions, as both the species proliferate in the eastern boundary upwelling conditions of the North Atlantic Ocean (e.g., Ottens, 1992;Salgueiro et al, 2008;Singh et al, 2015Singh et al, , 2023Vautravers & Shackleton, 2006;Wilke et al, 2009). The abundance record of G. inflata combined with N. incompta indicates the PC influence (Salgueiro et al, 2008;Singh et al, 2015Singh et al, , 2023Vautravers & Shackleton, 2006), because these species show strong 2017). Tie-points (listed in Table 1) are marked by wine red arrows with solid and dashed ones denoting primary (Hodell et al, 2023) and secondary tie-points (this study) respectively.…”

“…Abundance records of N. pachyderma and T. quinqueloba are used to trace the signatures of polar and sub-polar water masses respectively. Earlier studies from the Iberian Margin have used these two species as proxies for deciphering the meridional shifts in polar/sub-polar fronts through time (e.g., Singh et al, 2015Singh et al, , 2023Vautravers & Shackleton, 2006;Voelker et al, 2009). The abundance variations of G. bulloides and G. glutinata are good indicators of changes in surface productivity and nutrient conditions, as both the species proliferate in the eastern boundary upwelling conditions of the North Atlantic Ocean (e.g., Ottens, 1992;Salgueiro et al, 2008;Singh et al, 2015Singh et al, , 2023Vautravers & Shackleton, 2006;Wilke et al, 2009).…”

Respostas dos foraminíferos planctônicos às variações da Célula de Revolvimento Meridional do Atlântico (AMOC) desde o Último Máximo Glacial na Bacia de Campos

“…Diversos estudos têm sido realizados sobre estimativas de mudanças climáticas e variações na hidrografia superficial dos oceanos, utilizando a variação na composição das assembleias de foraminíferos planctônicos (censos de fauna) e informações geoquímicas extraídas de suas carapaças (isótopos e elementos-traço) (e.g. de Abreu et al, 2005;Kucera et al, 2005;Barrows e Juggins, 2005;Carlson et al, 2008;Alonso-Garcia et al, 2011;Pivel et al, 2013;Santos et al, 2013;Singh et al, 2015).…”

Stable Isotope Analysis of Japan Sea and East China Sea Sediments: Late Pleistocene Paleoceanographic Reconstructions

“…Globigerina quinqueloba (Natland, 1938), which are productivity indices (Chapman et al, 1996;Conan & Brummer, 2000;Domitsu & Oda, 2005;Prell, 1984;Rohling et al, 1997;Stefanelli et al, 2005). Dominance of Neogloboquadrina pachyderma (rightcoiling) is indicative of cold (0-9°C), polar front water in the northern Japan Sea (Singh et al, 2015) and presently dominates (>50%) the foraminiferal assemblages in central and northern Japan Sea sediments (Domitsu & Oda, 2005). However, N. pachyderma is more closely related to the presence of a pycnocline rather than the mixing of surface waters .…”