Wind-driven upwelling of iron sustains dense blooms and food webs in the eastern Weddell Gyre
Nature Communications, 2023 This study reports a dense, late summer phytoplankton bloom in the Southern Ocean that accumulated unusually high levels of organic matter and supported feeding hot spots for birds and whales.
Sebastien Moreau +30 more
doaj +1 more source
Abundance of the iron containing biomolecule, heme b, during the progression of a spring phytoplankton bloom in a mesocosm experiment. [PDF]
PLoS ONE, 2017 Concentrations of heme b were determined in a mesocosm experiment situated in Gullmar Fjord off Sweden. The mesocosm experiment lasted for ca. one hundred days and was characterised by the growth of a primary nutrient replete and a secondary nutrient ...
Jessica Bellworthy +3 more
doaj +1 more source
Seasonal dispersal of fjord meltwaters as an important source of iron and manganese to coastal Antarctic phytoplankton [PDF]
Biogeosciences, 2021 Glacial meltwater from the western Antarctic Ice Sheet is hypothesized to be an important source of cryospheric iron, fertilizing the Southern Ocean, yet its trace-metal composition and factors that control its dispersal remain poorly constrained.
K. O. Forsch +7 more
doaj +1 more source
Rapid formation of large aggregates during the spring bloom of Kerguelen Island: observations and model comparisons [PDF]
Biogeosciences, 2014 While production of aggregates and their subsequent sinking is known to be one pathway for the downward movement of organic matter from the euphotic zone, the rapid transition from non-aggregated to aggregated particles has not been reported previously ...
M.-P. Jouandet +5 more
doaj +1 more source
First phytoplankton community assessment of the Kong Håkon VII Hav, Southern Ocean, during austral autumn [PDF]
Biogeosciences, 2022 We studied phytoplankton and protozooplankton community composition based on light microscopy, flow cytometry, and photosynthetic pigment data in the Atlantic sector of the Southern Ocean during March 2019 (early austral autumn).
H. M. Kauko +9 more
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The Madagascar Bloom – a serendipitous study [PDF]
, 2013 The late austral summer (February-April) phytoplankton bloom that occurs east of Madagascar exhibits significant interannual variability and at its largest extent covers ~1% of the world’s ocean surface area.
Quartly, GD +3 more
core +1 more source
Iron stable isotopes track pelagic iron cycling during a subtropical phytoplankton bloom [PDF]
Proceedings of the National Academy of Sciences, 2014 Significance The supply and bioavailability of dissolved iron sets the magnitude of surface productivity for approximately 40% of the global ocean; however, our knowledge of how it is transferred between chemical states and pools is poorly constrained.
Michael J. Ellwood +9 more
openaire +3 more sources
Origin and fate of particulate and dissolved organic matter in a naturally iron-fertilized region of the Southern Ocean [PDF]
Biogeosciences, 2015 Natural iron fertilization of high-nutrient low-chlorophyll (HNLC) waters induces annually occurring spring phytoplankton blooms off the Kerguelen Islands (Southern Ocean).
L. Tremblay +3 more
doaj +1 more source
Different iron storage strategies among bloom-forming diatoms [PDF]
Proceedings of the National Academy of Sciences, 2018 Diatoms are prominent eukaryotic phytoplankton despite being limited by the micronutrient iron in vast expanses of the ocean. As iron inputs are often sporadic, diatoms have evolved mechanisms such as the ability to store iron that enable them to bloom when iron is resupplied and then persist when low iron levels are reinstated ...
Robert H. Lampe +8 more
openaire +3 more sources
Stable composition of the nano- and picoplankton community during the ocean iron fertilization experiment LOHAFEX. [PDF]
PLoS ONE, 2014 The iron fertilization experiment LOHAFEX was conducted in a cold-core eddy in the Southern Atlantic Ocean during austral summer. Within a few days after fertilization, a phytoplankton bloom developed dominated by nano- and picoplankton groups.
Stefan Thiele +5 more
doaj +1 more source