Table 1 Matrix documenting how different environmental variables and processes may potentially increase or decrease rates of Si(OH)4 utilization over the analysed interval at ODP Site 1098A.

From: Temporal controls on silicic acid utilisation along the West Antarctic Peninsula

Environmental variable

↑ Si(OH) 4 utilization

↓ Si(OH) 4 utilization

↑ Sea ice (↑ F. curta)

↑ Spring stratification ↑ productivity

↑ Brine ↑ UCDW/nutrient onto shelf

↑ Solar irradiance

↑ Summer stratification ↑ productivity

↑ SWW

↑ UCDW/nutrient onto shelf

↑ Glacial discharge (↓ δ18Odiatom)

↑ Spring stratification ↑ productivity

↑ nutrients (glacial flour) and/or ↑ autumn and winters sea-ice formation ↑ UCDW/nutrients onto shelf

  1. SWW, Southern Hemisphere Westerly Wind; UCDW, Upper Circumpolar Deep Water.