A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record

Control Mechanisms of Primary Productivity Revealed by Calcareous Nannoplankton From Marine Isotope Stages 12 to 9 at the Shackleton Site (IODP Site U1385)

“…The effect of this intra‐interglacial atmospherically shift at the full interglacial MIS 11c over primary productivity records has been similarly identified in the Alboran Sea (González‐Lanchas et al., 2020) at around 406 ka via enhanced western Mediterranean circulation and complete upwelling development controlled by this atmospheric shift towards a prevalent + NAO‐ like configuration.…”

Potential SST drivers for Chlorophyll-a variability in the Alboran Sea: A source for seasonal predictability?

“…In this sense, apart from NAO, other modes contributing to interannual FIGURE 1 climate variability such as the tropical North Atlantic (Rodrıǵuez-Fonseca et al, 2006;Losada et al, 2007) or ENSO (Brönnimann, 2007;Shaman, 2014) have been identified as drivers of wind anomalies over the western Mediterranean. ENSO and NAO have been highlighted as forcings of anomalous chlorophyll-a distributions and phytoplankton primary production in different subregions of the Mediterranean basin (Katara et al, 2008;Basterretxea et al, 2018;Gonzaĺez-Lanchas et al, 2020). However, the specific signal of these large-scale climate modes on northern Alboran, the linking mechanisms, and the related predictive value are still questions which require further investigation.…”

Paleoproductivity Modes in Central Mediterranean During MIS 20—MIS 18: Calcareous Plankton and Alkenone Variability

“…On the other hand, G. caribbeanica is considered a cosmopolitan taxon (Baumann & Freitag, 2004; Flores et al., 2012; Saavedra‐Pellitero et al., 2017) with a more questionable ecology since it has been related to oligotrophic and warm surface waters (Bollmann, 1997; Bollmann et al., 1998; Toti et al., 2020), to seasonally nutrient‐enriched subpolar to subtropical waters (Baumann & Freitag, 2004). This species is capable of seasonal bloom (Baumann et al., 2005; Flores et al., 2012), and usually used as a proxy for high paleoproductivity (González‐Lanchas et al., 2020; López‐Otálvaro et al., 2008; Maiorano et al., 2013; Quivelli et al., 2020). The increase of medium‐sized Gephyrocapsa and their significant contribution to coccolithophore abundance during MIS 19c, with respect to MIS 20 can be interpreted as a marked change in the paleoenvironment and specifically associated with a persistent warmer environment (SSTs are persistently at their maxima values, with mean values of about 18.5°C; Figure 2b) as well as adequate, seasonal nutrient availability that sustained placolith spring/winter blooming.…”