Perron, Mary Ann C, Charette, Cristina, Francis, Abraham T, Holden, Courtney, Moyle, Madeleine, Boyle, John, Franceschini, Jaclyn, Hickey, Brian MBC, Nurse, Amanda, Ridal, Jeffrey J et al (show 4 more authors)
(2024)
Revisiting the influence of top-down and bottom-up pressures on Wa hia hé:ta (yellow perch Perca flavescens Mitchill, 1814) population dynamics in Kaniatarowanenneh (the Upper St. Lawrence River): Implications for collaborative research.
Canadian Journal of Fisheries and Aquatic Sciences (ja).
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Abstract
<jats:p> Kaniatarowanenneh (St. Lawrence River) is the outflow of one of the world’s largest freshwater ecosystems and its ecological health has implications for resource management. The population dynamics of an ecologically and economically important fish, the Wa hia hé:ta, Mohawk for yellow perch (Perca flavescens Mitchill, 1814), are considered by including data that extends to the past century to redress temporal gaps in comparative literature. We found both a significant top-down effect from piscivorous fish as well as a significant bottom-up effect related to total phosphorus on yellow perch relative abundance in the Lake Ontario-Upper St. Lawrence system. Regarding the bottom-up effect, the current state of yellow perch reflects the population size prior to cultural eutrophication (pre-1940s/50s) likely responding to the re-oligotrophication of the system. These findings emphasize the importance of considering historical records in fish population dynamics research to incorporate shifting population baselines into fisheries management. The study also demonstrates the need for collaborative approaches that bring critical new insights and multivocality. </jats:p>
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Environmental Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 25 Mar 2024 11:47 |
| Last Modified: | 25 Mar 2024 12:03 |
| DOI: | 10.1139/cjfas-2023-0130 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3179880 |
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