Reconstructing half a century of coregonine recruitment reveals species-specific dynamics and synchrony across the Laurentian Great Lakes DOI Creative Commons
Taylor A. Brown, Lars G. Rudstam, Suresh A. Sethi

et al.

ICES Journal of Marine Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Abstract Understanding how multiple species and populations vary in their recruitment dynamics can elucidate the processes driving across space time. Lake Whitefish (Coregonus clupeaformis) Cisco (C. artedi) are socioecologically important fishes range; however, many Laurentian Great Lakes have experienced declining, poor, or sporadic recent decades. We integrated catch age data from 38 long-term surveys each of Simcoe, resulting a combined time series spanning 1960–2019. estimated year-class strength (YCS) lake using longitudinal mixed-effects regressions relative cohort abundance. subsequently quantified interspecific, spatial, temporal synchrony YCS correlation dynamic factor analyses. was positively spatially synchronous on average, all six lakes elevated during 1980s–1990s. In contrast, sporadic, not synchronous, highly variable around long-term, lake-specific means. between any lake. Collectively, our analyses demonstrate that these exhibit differential may be regulated by species-specific factors. Results this study leveraged future research causes consequences cross-species, cross-basin variability.

Language: Английский

Field and laboratory validation of new sampling gear to quantify coregonine egg deposition and larval emergence across spawning habitat gradients DOI
Brian C. Weidel, Cameron Davis, Brian P. O’Malley

et al.

Journal of Great Lakes Research, Journal Year: 2023, Volume and Issue: 49(5), P. 1059 - 1068

Published: July 16, 2023

Language: Английский

Citations

6
Lakeshore areas of conservation interest: Characteristics of nursery areas of the threatened lake‐dwelling grayling, Thymallus thymallus DOI Creative Commons
Topi K. Lehtonen,

Esa Hirvonen,

Irma Kolari

et al.

Aquaculture Fish and Fisheries, Journal Year: 2024, Volume and Issue: 4(2)

Published: March 23, 2024

Abstract Research‐based knowledge is essential for effective conservation and restoration of threatened aquatic species habitats. Here, our aim was to gather this on the lake‐dwelling grayling ( Thymallus thymallus ), typically a riverine fish. Such atypical populations are particularly vulnerable anthropogenic impacts, including fishing pressure, climate change, eutrophication waterway construction, some which affect especially early life stages. However, there little information available guide management in lakes. Accordingly, we assessed characteristics nursery areas population Lake Puruvesi (eastern Finland). In particular, used beach seines two consecutive years sample lakeshore sites (including islands) that were priori presumed suitable grayling. We occurrence fry (larvae post‐larvae <40 mm length) regarding depth, year, site's exposure (fetch), bottom shear stress, substrate coarseness shoreline's north–south orientation. Overall, found low numbers at every fourth site, with sites’ dominant being most relevant variables. more exposed (i.e. higher fetch values) fine‐grained substrates dominated by sand or gravel had fry. Average stress shoreline orientation along axis did not have significant effect. Together, results suggest important zones barren exposed. Hence, share those reproduction common hope these findings will facilitate grayling's efforts.

Language: Английский

Citations

1
Larval coregonine density and diet composition along beaches of northern Lake Michigan DOI
M. L. Cubbage, Tomas O. Höök, David B. Bunnell

et al.

Journal of Great Lakes Research, Journal Year: 2024, Volume and Issue: 50(4), P. 102380 - 102380

Published: Aug. 1, 2024

Language: Английский

Citations

0
Factors influencing larval coregonine spatial distribution in Lake Geneva (Europe) and Lake Superior (North America) during a single season near known spawning sites DOI Creative Commons

Jamie A. Dobosenski,

Daniel L. Yule, Jean Guillard

et al.

International Journal of Limnology, Journal Year: 2024, Volume and Issue: 60, P. 12 - 12

Published: Jan. 1, 2024

Survival rate of the larval stage is an important driver fish recruitment. To understand mechanisms regulating survival it to relative importance abiotic and biotic factors that shape spatial distributions. We studied Coregonus distributions in surface waters (surface 1 m) by repeatedly sampling study sites two lakes varied greatly trophic state regional climate. evaluated bathymetric depth, Julian Day, edible zooplankton densities (EZ, ind. L −1 ) wind vectors on using generalized additive modeling. In both systems, counts declined a negative exponential fashion with indicating shallow depths are critical nursery habitat. The north-south Day (which was positively correlated temperature) influenced Lake Geneva related variables linearly, whereas east-west vector EZ were unimportant. Highest during offshore south slightly Day. Superior, depth unrelated EZ, vector. Larval highest when onshore southwest winds preceded sampling. Differences how affected distribution (offshore vs. onshore) might be size Superior larvae considerably smaller (average length 12.9 mm 15.9 mm); thus, more apt subjected advection. Within coastal waters, influence distributions, but their seemingly varies lake-to-lake.

Language: Английский

Citations

0
U.S. Geological Survey Tunison Laboratory of Aquatic Science research to rehabilitate native prey fish of the Lake Ontario fish community—Coregonine fishes DOI
James E. McKenna, James H. Johnson,

Steven R. LaPan

et al.

Scientific investigations report, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Language: Английский

Citations

0
Reconstructing half a century of coregonine recruitment reveals species-specific dynamics and synchrony across the Laurentian Great Lakes DOI Creative Commons
Taylor A. Brown, Lars G. Rudstam, Suresh A. Sethi

et al.

ICES Journal of Marine Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

Abstract Understanding how multiple species and populations vary in their recruitment dynamics can elucidate the processes driving across space time. Lake Whitefish (Coregonus clupeaformis) Cisco (C. artedi) are socioecologically important fishes range; however, many Laurentian Great Lakes have experienced declining, poor, or sporadic recent decades. We integrated catch age data from 38 long-term surveys each of Simcoe, resulting a combined time series spanning 1960–2019. estimated year-class strength (YCS) lake using longitudinal mixed-effects regressions relative cohort abundance. subsequently quantified interspecific, spatial, temporal synchrony YCS correlation dynamic factor analyses. was positively spatially synchronous on average, all six lakes elevated during 1980s–1990s. In contrast, sporadic, not synchronous, highly variable around long-term, lake-specific means. between any lake. Collectively, our analyses demonstrate that these exhibit differential may be regulated by species-specific factors. Results this study leveraged future research causes consequences cross-species, cross-basin variability.

Language: Английский

Citations

0