Centurial Variation in Size at Maturity of Eastern Baltic Cod (Gadus morhua) Mirrors Conditions for Growth DOI Creative Commons
Henrik Svedäng, Sara Hornborg, Anders Grimvall

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(10)

Published: Oct. 1, 2024

ABSTRACT The status of Eastern Baltic cod (EBC) Gadus morhua has remained poor despite low fishing mortality for over a decade, including ban since 2019. Although the decline in productivity can be explained by lower individual growth and survival rates, other aspects life‐history changes such as maturation patterns EBC so far not been sufficiently explored. According to current stock assessments, median size at maturity ( L 50 ) halved from 40 around 20 cm total length 1990s, while overall distribution become increasingly truncated. It previously suggested that attributed both fishing‐induced evolution phenotypic plasticity induced rates. However, is currently occurring cm, process must have initiated much smaller sizes, is, long before fish could caught dominant trawl fishery 35 cm. In this study, we aimed further investigate what drivers may led reduced determining variations sexual longer time series than done (1930s 1980s) include prey quality. We found declined already 1930s thereafter stable up 1990s. On centurial perspective, positively correlated potential 95 ), diversity, biomass, catch yield per recruit, Fulton's condition factor was related . Our results suggest links between parameters external are complex, but present unprecedented early onset hence 1990s signals potential, which also hampered EBC.

Language: Английский

Stakeholder workshops on western Baltic cod fisheries–conflict and consensus in the face of a highly dynamic ecosystem DOI Creative Commons
Wolf‐Christian Lewin, Marlon Pierce, Robert Arlinghaus

et al.

Biological Conservation, Journal Year: 2025, Volume and Issue: 302, P. 110983 - 110983

Published: Jan. 17, 2025

Language: Английский

Citations

0
Trophic lengthening triggered by filamentous, N2‐fixing cyanobacteria disrupts pelagic but not benthic food webs in a large estuarine ecosystem DOI Creative Commons
Markus Steinkopf, Uwe Krumme,

Detlef E. Schulz–Bull

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(2)

Published: Feb. 1, 2024

Eutrophication, increased temperatures and stratification can lead to massive, filamentous, N

Language: Английский

Citations

3
Centurial Variation in Size at Maturity of Eastern Baltic Cod (Gadus morhua) Mirrors Conditions for Growth DOI Creative Commons
Henrik Svedäng, Sara Hornborg, Anders Grimvall

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(10)

Published: Oct. 1, 2024

ABSTRACT The status of Eastern Baltic cod (EBC) Gadus morhua has remained poor despite low fishing mortality for over a decade, including ban since 2019. Although the decline in productivity can be explained by lower individual growth and survival rates, other aspects life‐history changes such as maturation patterns EBC so far not been sufficiently explored. According to current stock assessments, median size at maturity ( L 50 ) halved from 40 around 20 cm total length 1990s, while overall distribution become increasingly truncated. It previously suggested that attributed both fishing‐induced evolution phenotypic plasticity induced rates. However, is currently occurring cm, process must have initiated much smaller sizes, is, long before fish could caught dominant trawl fishery 35 cm. In this study, we aimed further investigate what drivers may led reduced determining variations sexual longer time series than done (1930s 1980s) include prey quality. We found declined already 1930s thereafter stable up 1990s. On centurial perspective, positively correlated potential 95 ), diversity, biomass, catch yield per recruit, Fulton's condition factor was related . Our results suggest links between parameters external are complex, but present unprecedented early onset hence 1990s signals potential, which also hampered EBC.

Language: Английский

Citations

0