Arctic spring: key processes influencing timing of primary producers in ice-covered waters

Professor CJ Mundy from University of Manitoba, Canada, has kindly offered to give a talk in Roskilde before his participation in the NOW Polynya conference.

2017.10.31

Date Mon 20 Nov
Time 13:00 14:00
Location Roskilde P1.16 7425116 Videolokale (max.40 pers)

Arctic spring: key processes influencing timing of primary producers in ice-covered waters

A key element in the structure and function of ecosystems is the timing of primary production. This statement is especially relevant for the Arctic as pulses of primary production in spring and potentially fall, followed by little to no production during winter darkness, control marine ecosystem productivity. Not surprisingly, light limitation, dependent on sunlight transmitted through the snow and ice cover, is the dominant factor controlling the start of spring blooms as well as local variability in primary production. Production first occurs as an algal bloom in the ice bottom (ice algae), followed by the development of a phytoplankton (pelagic) bloom in the water column. However, when one looks closer, it becomes apparent that the system is not solely driven by light limitation and that several other factors play a role. This talk will touch on most of these factors via a discussion on our current understanding of key processes that influence timing of primary production in the ice-covered Arctic marine environment. To accomplish this, I will highlight recent research I have been involved with.

Bio:

Dr. Mundy is an Associate Professor in the Centre for Earth Observation Science, Department of Environment and Geography at the University of Manitoba in Canada. His research interests involve the examination of physical and biological processes in the polar marine ecosystem, with a particular focus on primary producers in ice-covered environments. To this end, his work is largely field oriented, investigating both ice-covered and open oceans via oceanographic research vessels and sea ice-based field camps.

http://umanitoba.ca/faculties/environment/departments/geography/staff/Mundy.html

http://umanitoba.ca/faculties/environment/departments/ceos/people/cmundy.html

Arctic Research Centre