Changes in environmental conditions and the population dynamics of Calanus finmarchicus in the Labrador Sea (1990-2006) ...

• Main Authors: Head, Erica, Azetsu-Scott, Kumiko, Harrison, Glen, Hendry, Ross, Li, William, Yashayaev, Igor, Yeats, Philip
• Format: Conference Object
• Language: unknown
• Published: ASC 2008 - Theme session Q 2024
• Subjects: Ecosystem observation, processes and dynamics; Pressures, impacts, conservation, and management; Bedford; Central Basin; Greenland; Calanus finmarchicus; Labrador Sea
• Online Access: https://dx.doi.org/10.17895/ices.pub.25244281; https://ices-library.figshare.com/articles/conference_contribution/Changes_in_environmental_conditions_and_the_population_dynamics_of_Calanus_finmarchicus_in_the_Labrador_Sea_1990-2006_/25244281

No abstracts are to be cited without prior reference to the author.A suite of physical, chemical and biological variables are measured at stations along a section across the Labrador Sea between southern Labrador and southern Greenland once a year by scientists from the Bedford Institute of Oceanography. Satellite images of sea surface temperature and chlorophyll provide extended coverage over space and time. From 1990 until 2006 near-surface temperatures increased by about 1°C. Over the same period nitrate concentrations in the central basin increased, while silicate concentrations decreased. Total inorganic carbon concentrations, measured since the mid-1990s, increased and pH decreased. The phytoplankton community appeared to respond to these changes with an overall increase in spring/summer chlorophyll concentrations, but with changes in size/species composition. The zooplankton community did not show large changes in biomass or community composition. On the other hand, for Calanus finmarchicus, which ...