Abundance, annual survival, and recruitment of unexploited and exploited lake charr,Salvelinus namaycush, populations at the Experimental Lakes Area, northwestern Ontario. Mills, K., H., Chalanchuk, S., M., & Allan, D., J. Environmental Biology of Fishes, 64:281-292, 2002.
Paper
Website abstract bibtex Synopsis We studied abundance, annual survival, and recruitment of nine lake charr, Salvelinus namaycush, populations at the Experimental Lakes Area, Ontario, for periods of 9-24 years. We used the Jolly-Seber mark-recapture method to evaluate abundance and annual survival in all populations, and total catches of individual year classes to evaluate recruitment. Seven populations were unexploited and unaffected by whole-lake experiments. One population was exploited prior to mark-recapture study and another was affected by experimental acidification. Abundance ranged from 8 to 24 fish ha −1 in the unaffected populations. Annual survival ranged from 78% to 93% yr −1 in all populations except the exploited population. This population may have been additionally affected by northern pike, Esox lucius, predation. Yearly recruitment was relatively constant in all populations and related to lake charr abundance. Lake charr abundance did not recover in populations affected by exploitation or acidification. Unexploited lake charr populations were characterized by relatively constant abundance, high annual survival, and relatively constant annual recruitment.
@article{
title = {Abundance, annual survival, and recruitment of unexploited and exploited lake charr,Salvelinus namaycush, populations at the Experimental Lakes Area, northwestern Ontario},
type = {article},
year = {2002},
keywords = {ACIDIFICATION,ELA,FISH,L223,L224,L239,L260,L305,L373,L375,L382,L442,LONGTERM DATA,Northwestern Ontario,Ontario,PH,PREDATION,Whole-lake manipulation,northern pike},
pages = {281-292},
volume = {64},
websites = {https://link.springer.com/content/pdf/10.1023%2FA%3A1016058705612.pdf},
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abstract = {Synopsis We studied abundance, annual survival, and recruitment of nine lake charr, Salvelinus namaycush, populations at the Experimental Lakes Area, Ontario, for periods of 9-24 years. We used the Jolly-Seber mark-recapture method to evaluate abundance and annual survival in all populations, and total catches of individual year classes to evaluate recruitment. Seven populations were unexploited and unaffected by whole-lake experiments. One population was exploited prior to mark-recapture study and another was affected by experimental acidification. Abundance ranged from 8 to 24 fish ha −1 in the unaffected populations. Annual survival ranged from 78% to 93% yr −1 in all populations except the exploited population. This population may have been additionally affected by northern pike, Esox lucius, predation. Yearly recruitment was relatively constant in all populations and related to lake charr abundance. Lake charr abundance did not recover in populations affected by exploitation or acidification. Unexploited lake charr populations were characterized by relatively constant abundance, high annual survival, and relatively constant annual recruitment.},
bibtype = {article},
author = {Mills, K. H. and Chalanchuk, S. M. and Allan, D. J.},
journal = {Environmental Biology of Fishes}
}
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