Webguide_19_20_261120191.pdf

Rick&Team Helg. 8 Wed January 2020 Phytoplankton & Chemical Oceanography Helg. 9 Thur January 2020 Phytoplankton & Chemical Oceanography Helg. 10 Fri January 2020 Phytoplankton & Chemical Oceanography Helg. [...] January 2020 13 Mon January 2020 Phytoplankton & Chemical Oceanography Helg. 14 Tue January 2020 Phytoplankton & Chemical Oceanography Helg. 15 Wed January 2020 Phytoplankton & Chemical Oceanography Helg. [...] Winter Break 6 Mon January 2020 Phytoplankton & Chemical Oceanography Dr. Johannes Rick, Kristine Carstens, Marthe Claußen, Silvia Peters Helg. 7 Tue January 2020 Phytoplankton & Chemical Oceanography Dr.

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Observing Phytoplankton via Satellite

the AWI can now use satellite data to determine in which parts of the ocean certain types of phytoplankton are dominant. In addition, they can identify toxic algal blooms and assess the effects of global

The gypsum gravity chute: A phytoplankton-elevator to the ocean floor

Arctic Ocean
Tiny gypsum crystals can make phytoplankton so heavy that they rapidly sink, hereby transporting large quantities of carbon to the ocean’s depths. Experts from the Alfred Wegener Institute

Open ship and Lab

series The Biologische Anstalt Helgoland operates some of the oldest time series in the world. The phytoplankton and zooplankton time series in particular have not only been run continuously for several decades

Global time series resources

This resource can provide important background information for analysts involved in routine phytoplankton counts web-apps.awi.de/Hustedt-Diatoms/Curator/ G-L G GACS : Global Alliance of Continuous [...] uk/research/climate/climate-monitoring/land-and-atmosphere/surface-station-records Helgoland Roads: A phytoplankton time series operated at the Biologische Anstalt Helgoland. You find more information here. HOTS

Research

CO2 concentration and pH in the present Southern Ocean. Phytoplankton ecology in the present Southern Ocean. Southern Ocean phytoplankton are major drivers of global carbon cycling accounting for ~2 Pg [...] this production relies on large phytoplankton blooms of a few key diatom species and the prymnesiophyte Phaeocystis along the Antarctic continent while pelagic phytoplankton contributes to a smaller degree [...] typically Fe-limited. Due to this, primary production and carbon export of oceanic phytoplankton is low while inshore phytoplankton is highly productive and has a high carbon export. Next to iron, light limitation

Fe-Mn Limitation

potential driver of Southern Ocean phytoplankton ecology? The diatom Chaetoceros debilis. Photo: F. Pausch (Photo: Alfred-Wegener-Institut) Primary production by phytoplankton is governed by several factors [...] iron and manganese limitation on the physiology of Antarctic phytoplankton is valuable to understand the requirements for optimal phytoplankton growth in the Southern Ocean and will help to improve predictions [...] factors such as light and nutrient availability in different parts of the world oceans. Phytoplankton concentrations in the Southern Ocean are low despite high concentrations of macronutrients like nitrate and

Inorganics in organics

production is limited by micronutrients such as iron. However, the bioavailability of iron to phytoplankton is predominantly controlled by organic compounds (ligands). These ligands are either actively

Projects

cobalt - potential drivers of Antarctic phytoplankton biodiversity? Light, iron and CO2 availability as potential modulators of Western Antarctic Peninsula phytoplankton community dynamics The impact of krill

Grazers impact on Fe biogeochemistry

quality and quantity. Compared to krill, salps prefer warmer ice-free waters and thrive at lower phytoplankton concentrations due to their filtration mode of feeding. Krill and salps are the most important [...] chemical form of dissolved Fe, the nature of organic matter, Fe bioavailability and their effects on phytoplankton community structure and productivity will be studied in a series of incubation experiments with