Biological-Physical Processes Determining Pseudocalanus Spp. (Crustacea; Copepoda) Distribution And Abundance On Georges Bank In The Northwest Atlantic ...

• Main Authors: Bucklin, Ann, Mcgillicuddy, Dennis J., Manning, Christopher A.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: ASC 2003 - P - Theme session 2024
• Subjects: Ecosystem observation, processes and dynamics; Northwest Atlantic
• Online Access: https://dx.doi.org/10.17895/ices.pub.25348813.v1; https://ices-library.figshare.com/articles/conference_contribution/Biological-Physical_Processes_Determining_Pseudocalanus_Spp_Crustacea_Copepoda_Distribution_And_Abundance_On_Georges_Bank_In_The_Northwest_Atlantic/25348813/1

No abstracts are to be cited without prior reference to the author.The planktonic copepod sibling species, Pseudocalanus moultoni and P. newmani, co-occur on Georges Bank (Northwest Atlantic), but differ in Spring-time evolution of distribution and abundance. Previous studies have described Bank-wide species’ distribution and abundance in monthly snap-shots from January to June of 1997 and 1999, using species-specific PCR (SS-PCR) to discriminate the sibling species. Numerical models were used to infer the biological sources and sinks implied by the observed changes in abundance between monthly surveys and the flow during the intervening periods. Based on such observation, visualization, and modeling, the two species appeared to have distinct sources in the early spring, but overlapping distributions by early summer, with the springtime increase for both species driven by a complex mixture of hydrodynamic transport and species-specific population dynamics. New observations have examined distribution and ...