Tag Archives: Sampling work

Aggregates

During the green edge 2016 experiment, at the beginning of June, we observed an aggregate event :  A morning the hole used for water column sampling was full of millions of large organic particles : aggregates. The same situation repeats every day during a full week before disappearing completely.

Continue reading Aggregates

Uranium + Thorium

As last year, scientists from the GreenEdge project are in the little village of Qikiqtarjuaq. Dozens of experiments are carried out at the ice camp. Here is an account of a new series of activities to evaluate the amount of organic matter that is exported from the surface to the bottom of the ocean. 

In the first meters of the water column, enough light makes it through the ice to maintain an active primary production. This bloom is restricted to the first few meters of the water column and therefore, we may wonder how is it possible for organisms living at the bottom of the ocean to survive without food? Part of the answer resides in the amount of exported organic matter. Continue reading Uranium + Thorium