Bioavailable iron concentrations regulate phytoplankton growth and bloom formation in low-nutrient lakes

M Dengg, CH Stirling, K Safi, NJ Lehto… - Science of the Total …, 2023 - Elsevier
The growth of phytoplankton in lakes is thought to be primarily controlled by macronutrient
concentrations, but the availability of trace metal micronutrients, such as iron (Fe), are …

Trace element (Fe, Co, Ni and Cu) dynamics across the salinity gradient in Arctic and Antarctic glacier fjords

J Krause, MJ Hopwood, J Höfer, S Krisch… - Frontiers in Earth …, 2021 - frontiersin.org
Around the Greenlandic and Antarctic coastlines, sediment plumes associated with glaciers
are significant sources of lithogenic material to the ocean. These plumes contain elevated …

The 79 N Glacier cavity modulates subglacial iron export to the NE Greenland Shelf

S Krisch, MJ Hopwood, J Schaffer, A Al-Hashem… - Nature …, 2021 - nature.com
Approximately half of the freshwater discharged from the Greenland and Antarctic Ice Sheets
enters the ocean subsurface as a result of basal ice melt, or runoff draining via the …

[HTML][HTML] Trace metal and nutrient dynamics across broad biogeochemical gradients in the Indian and Pacific sectors of the Southern Ocean

DJ Janssen, M Sieber, MJ Ellwood, TM Conway… - Marine chemistry, 2020 - Elsevier
Abstract The Southern Ocean is the largest high-nutrient low-chlorophyll environment in the
global ocean, and represents an important source of intermediate and deep waters to lower …

Solubilities and deposition fluxes of atmospheric Fe and Cu over the Northwest Pacific and its marginal seas

T Yang, Y Chen, S Zhou, H Li, F Wang, Y Zhu - Atmospheric Environment, 2020 - Elsevier
Atmospheric input is an important exogenous source of Fe and Cu to the surface ocean.
Here, we investigated temporal and spatial variations, solubilities, size distributions and …

High lability Fe particles sourced from glacial erosion can meet previously unaccounted biological demand: Heard Island, Southern Ocean

P Van der Merwe, K Wuttig, T Holmes… - Frontiers in Marine …, 2019 - frontiersin.org
Iron (Fe) is an essential micronutrient that controls phytoplankton growth in the Southern
Ocean. Dissolved Fe (< 0.4 μm) has been extensively studied due to its relatively high …

A Circum‐Antarctic Plankton Isoscape: Carbon Export Potential Across the Summertime Southern Ocean

L Stirnimann, TG Bornman, HJ Forrer… - Global …, 2024 - Wiley Online Library
Abstract The Southern Ocean accounts for∼ 30% of the ocean's CO2 sink, partly due to its
biological pump that transfers surface‐produced organic carbon to deeper waters. To …

Estimates of the isotope effect for Nitrate assimilation in the Indian Sector of the Southern Ocean

RK Thomas, SE Fawcett, HJ Forrer… - Journal of …, 2024 - Wiley Online Library
Abstract The Southern Ocean is a high‐nutrient, low‐chlorophyll (HNLC) region
characterized by incomplete nitrate (NO3−) consumption by phytoplankton in surface waters …

Effect of dissolved iron (II) and temperature on growth of the Southern Ocean phytoplankton species Fragilariopsis cylindrus and Phaeocystis antarctica

H Aflenzer, L Hoffmann, T Holmes, K Wuttig… - Polar Biology, 2023 - Springer
Low bioavailability of the vital element iron (Fe) limits primary production in large regions of
the Southern Ocean, thus impacting phytoplankton community structures. Primary …

Quantifying lithogenic inputs to the Southern Ocean using long-lived thorium isotopes

H Pérez-Tribouillier, TL Noble, AT Townsend… - Frontiers in Marine …, 2020 - frontiersin.org
Thorium (Th) isotopes were applied to quantify the supply of lithogenic inputs from the
Kerguelen Plateau to the Southern Ocean. The dissolved concentrations of 232Th and …