Comparative Examination of Scale-explicit Biological and Physical Processes: Recruitment of Pacific hake (Merluccius productus).
The creation, maintenance, and destruction of aquatic organism distributions result from biological and physical processes that operate at different spatial and temporal scales. Rate diagrams plot and contour ratios of process rates as a function of spatial and temporal scale to summarize the relative importance of demographics, growth, and kinematics. The utility of this approach is demonstrated by examining physical and biological processes that influence the distribution and survival of larval and juvenile Pacific hake (Merluccius productus) in the California Current region. Processes that influence changes in hake biomass switch from mortality and drift among larvae to somatic growth and active locomotion among juveniles. Comparison of hake rate diagrams with those of capelin (Mallotus villosus) and Atlantic cod (Gadus morhua) show that dominant processes differ across scales, across life history stages, and across species. Published in: Canadian Journal of Fisheries and Aquatic Sciences. 56 (Suppl.) 170-179. 1999.
01 Jan 1999
Fishing, hunting and trapping
National Centres Of Excellence (NCE) Project: Ocean Production Enhancement Network
Strategic Research Theme
Oceans, Fisheries and Aquaculture