Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator

Autor: Michele Casini, Filip Käll, Martin Hansson, Maris Plikshs, Tatjana Baranova, Olle Karlsson, Karl Lundström, Stefan Neuenfeldt, Anna Gårdmark, Joakim Hjelm

Publikováno v: Royal Society Open Science, Vol 3, Iss 10 (2016)

Investigating the factors regulating fish condition is crucial in ecology and the management of exploited fish populations. The body condition of cod (Gadus morhua) in the Baltic Sea has dramatically decreased during the past two decades, with large

Externí odkaz: https://doaj.org/article/78416894656f4c16bfed710d7f73a57e

A no-take zone and partially protected areas are not enough to save the Kattegat cod, but enhance biomass and abundance of the local fish assemblage

Autor: Mattias Sköld, Patrik Börjesson, Håkan Wennhage, Joakim Hjelm, Johan Lövgren, Katja Ringdahl

To supplement catch and effort regulations with the purpose to rebuild the cod (Gadus morhua) stock in Kattegat, Sweden and Denmark established a large (426 km2) year-round no-take zone (NTZ) surrounded by partially protected areas (PPAs) in 2009. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cf5d055f3b1cb09f3e9b05462cb40be
https://pub.epsilon.slu.se/29262/

Comments on Local cod (Gadus morhua) revealed by egg surveys and population genetic analysis after longstanding depletion on the Swedish Skagerrak Coast by Svedäng et al

Autor: Massimiliano Cardinale, Joakim Hjelm, Stefano Mariani

Publikováno v: ICES Journal of Marine Science. 76:1209-1211

Svedäng et al. (2018) concluded that “the occurrence of locally spawned cod eggs suggests that spawning on the Swedish Skagerrak coast takes place, which belong to either a coastal subpopulation that is a remnant stock of a once much larger cod po

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96d906ff41b3d23d36dd1ff60c9dc382
https://doi.org/10.1093/icesjms/fsz095

Designing spawning closures can be complicated: Experience from cod in the Baltic Sea

Autor: Friedrich W. Köster, Hans-Harald Hinrichsen, Karin Hüssy, Christopher Zimmermann, Margit Eero, Bastian Huwer, Joakim Hjelm, Marie Storr-Paulsen, Maris Plikshs, Piotr Margonski

Publikováno v: Ocean & Coastal Management, 169 . pp. 129-136.
Eero, M, Hinrichsen, H-H, Hjelm, J, Huwer, B, Hüssy, K, Köster, F W, Margonski, P, Plikshs, M, Storr-Paulsen, M & Zimmermann, C 2019, ' Designing spawning closures can be complicated: Experience from cod in the Baltic Sea ', Ocean & Coastal Management, vol. 169, pp. 129-136 . https://doi.org/10.1016/j.ocecoaman.2018.12.018

Highlights: • Designing spawning closures requires consideration of the mechanisms through which the closures can affect the fish stocks. • Small area closures may have unintended negative effects to the stocks due to fishing effort reallocation.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fed4b7c504e50ea08573cf2bcfb4fa91
http://oceanrep.geomar.de/45097/

Fishing, reproductive volume and regulation: population dynamics and exploitation of the eastern Baltic cod

Autor: Massimiliano Cardinale, Jonas Knape, Michele Casini, Anders Wikström, Joakim Hjelm, Niclas Jonzén, Anna Gårdmark

Publikováno v: Population Ecology. 58:199-211

The relative importance of exploitation rate and environmental variability in generating fluctuations of harvested populations is a key issue in academic ecology as well as population management. We studied how the eastern Baltic cod (Gadus morhua) i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bd07bb4d87a51035b1d9ca096664e84
https://doi.org/10.1007/s10144-015-0520-3