Concordia University
Candidat Postdoctoral fellow
superviseur(e): Eric Pedersen
Début: 2021-03-01
Fin: 2023-02-28

Projet

Size Spectra Modeling to Assess Productivity, Recovery, and Sustainable Levels of Community Harvesting of Eastern Canadian Marine Shelf Ecosystems
Off the east coast of Canada we observe some marine ecosystems that are still recovering from prior overexploitation, such as the Newfoundland shelf, while other regions have witnessed recent expansion of fishing industries, such as the waters off of Nunavut. This project seeks to analyze trends in overall ecosystem health and to assess the overall impacts fishing activities have on fish and invertebrate communities from the southern Grand Banks to northern Nunavut using a technique called size spectra modeling. Size spectra modeling analyzes the amount of fish within given size ranges observed in order to determine trends in observed community productivity and how they compare to what hypothetically could be observed under theoretical pristine environmental conditions. Our partner organization would benefit from such results as the determination of what areas are observing increases in fish productivity (or alternatively experiencing negative trends) and inform appropriate levels of exploitation.

Publications

1- Spatial and ontogenetic variation in isotopic niche among recovering fish communities revealed by Bayesian modeling
Kyle J. Krumsick, Jonathan A. D. Fisher
2019 PLOS ONE

2- Community size spectra provide indicators of ecosystem recovery on the Newfoundland and Labrador shelf
Krumsick, KJ, JAD Fisher
2020 Marine Ecology Progress Series

3- Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador
Krumsick, Kyle J., George A. Rose
2012 ICES Journal of Marine Science