Species with sympatric geographical distributions can be expected to interact with each other in a number of ways, for example through competition, parasitism or predation. This may lead to the evolution of behavioural or morphological traits which can either facilitate or counteract these interactions.
During the expedition Beringa 2005 were we able to visit four field areas and obtained four long sequences of sediment from three of these: Utka, Esso, and Ossora. All the cores are rich in organic matter and well suited for the planned palaeoecological and geochemical analyses.
Botanists on the Beringia 2005 expedition have sampled the Beringian flora in order to test Hultén’s proposals on the history and evolution of the arctic flora in the light of new phytogeographical and molecular evidence.
The third leg of the Beringia 2005 research expedition consisted of a joint crossing of the central Arctic Ocean involving Swedish icebreaker Oden and U.S. Coast Guard Cutter Healy.
During the expedition Beringia 2005 our investigations focussed on the Okhotsk-Chukotka volcano-plutonic belt (OCVB) of the Chukotka Peninsula in eastern Russia.
This theme included research projects within geological history and tectonics (study of the movement of the earth’s plates) and biodiversity from a prehistoric ecological perspective.