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

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 basis of the marine food web in the Arctic, the phytoplankton, responds to heatwaves much differently than to constantly elevated temperatures. This has been found by the first targeted experiments [...] the topic, which were recently conducted at the Alfred Wegener Institute’s AWIPEV Station. The phytoplankton’s behaviour primarily depends on the cooling phases after or between heatwaves, as shown in a study

State Report (OSR7). The satellite data analysed by the team shows that, for the majority of phytoplankton groups in the Atlantic Ocean, the quantity has barely changed over the past 20 years. The findings

40 percent of the carbon dioxide that we humans produce - more than any other ocean on Earth. Phytoplankton is one of the main reasons for that: The microorganisms take up CO 2 during photosynthesis. But [...] But although the Southern Ocean is rich in nutrients that support their growth, there is little phytoplankton there. One reason for this is a lack of iron in the water. However, a recent study by the Alfred [...] journal Nature Communications Biology, now shows that manganese also plays a crucial role for phytoplankton in the Southern Ocean.

PS93.1 Weekly Report No. 2 | 6 till12 July 2015
Monday 06 July. Our today’s activities are mainly related to the Hovercraft camp and Yngve & Audun. How should we procede?

[1]. Seasonal sea ice cover retreat favors phytoplankton bloom development and the extension of phytoplankton growing season, increasing annual mean phytoplankton biomass and production [2,3]. This increase [...] derive particulate absorption coefficients ( a p ) [8-19]. Chl-a, the proxy of phytoplankton biomass, together with phytoplankton functional types, are then derived from a p . First results for the project [...] PhD project(2015-) Yangyang Liu funded by the China Scholarship Council (CSC) Phytoplankton, the main primary producers at the base of marine food web, have distinctive impacts on the changes of Arctic

Phytoplankton ecophysiology Mission – The aim of our research is to measure, understand and predict the reactions of phytoplankton to various factors such as warming, nutrient deficiency or ocean acidification [...] predict floristic and functional change. Algal bloom in the Barents sea (Photo: ESA) Phytoplankton - Phytoplankton, unicellular photosynthetic organisms, are responsible for about half of the world's primary [...] providing carbon and energy for higher trophic levels, they maintain and shape marine ecosystems. Phytoplankton can be divided into different functional types, which differ in how they influence global elemental

Antarctic phytoplankton ecology and biogeochemistry CO 2 uptake by phytoplankton in the Southern Ocean is mainly constrained by limited trace metal input, in particular iron and manganese. As trace metal [...] Southern Ocean phytoplankton community structure. Mathematical models provide a process understanding on the dynamic regulation of photosynthesis and carbon acquisition for the different phytoplankton functional [...] major goal of the EcoTrace group is to understand how global change will affect Southern Ocean phytoplankton ecology and biogeochemistry. The consequences of climatic changes, particularly on the supply

will inevitably affect coastal phytoplankton communities. To better understand the impact of light, iron and carbon dioxide availability as potential modulators of phytoplankton community dynamics in Ryder [...] CO2 incubation experiments with Ryder ay phytoplankton. Picture: S. Trimborn (Photo: Alfred-Wegener-Institut) Sampling of seawater containing Ryder Bay phytoplankton. Picture: S. Trimborn (Photo: Alfred- [...] Light, iron and carbon dioxide availability as potential modulators of phytoplankton community dynamics in Ryder Bay, Western Antarctic Peninsula The British research station Rothera on the Western Antarctic