2020
DOI: 10.1111/fog.12474
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Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation

Abstract: The survival of fish eggs and larvae, and therefore recruitment success, can be critically affected by transport in ocean currents. Combining a model of early‐life stage dispersal with statistical stock–recruitment models, we investigated the role of larval transport for recruitment variability across spatial scales for the population complex of North Sea cod (Gadus morhua). By using a coupled physical–biological model, we estimated the egg and larval transport over a 44‐year period. The oceanographic componen… Show more

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Cited by 15 publications
(11 citation statements)
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“…We focused here on the cause and consequence of variation in the geographic distribution of age‐0 juveniles in the GOA and our findings suggest that wind‐driven transport interacts with a spatial mosaic of habitat suitability to affect recruitment. This has fundamental utility as we explore how to integrate transport and retention mechanisms in models of stock dynamics (e.g., Romagnoni et al., 2020). It also has system‐level importance because directional alignment between flow and spatial translation of suitable habitat is hypothesized to affect the rate at which populations redistribute geographically (e.g., poleward flowing current aligned with global climate‐forced spatial translation of isotherms) (Sorte, 2013).…”
Section: Discussionmentioning
confidence: 99%
“…We focused here on the cause and consequence of variation in the geographic distribution of age‐0 juveniles in the GOA and our findings suggest that wind‐driven transport interacts with a spatial mosaic of habitat suitability to affect recruitment. This has fundamental utility as we explore how to integrate transport and retention mechanisms in models of stock dynamics (e.g., Romagnoni et al., 2020). It also has system‐level importance because directional alignment between flow and spatial translation of suitable habitat is hypothesized to affect the rate at which populations redistribute geographically (e.g., poleward flowing current aligned with global climate‐forced spatial translation of isotherms) (Sorte, 2013).…”
Section: Discussionmentioning
confidence: 99%
“…This correlation was performed due to the lack of data on larvae and settlers during these years. In general, the influence of current on recruitment can serve as an indicator of effective connectivity between areas (Romagnoni et al, 2020). However, sea urchin density during the post-settlement phase experiences important decreases due to predators (Hereu, Zabala & Sala, 2008) and, as consequence, bottom current speed should be more closely correlated to larvae and settlers than to recruits.…”
Section: Discussionmentioning
confidence: 99%
“…However, in this area larval dispersion could be strongly dependent on the bottom current speed (Farina et al, 2018). The presence of "source-sink" dynamics via larval dispersal mediated by bottom current speed could affect conservation and management strategies for sustainable fisheries (Romagnoni et al, 2020;Kritzer & Sale, 2004;Kerr et al, 2017). This is especially important for conservation requirements in a Marine Reserve (Paterno et al, 2017) and it is an aspect of concern for future research in this area.…”
Section: Discussionmentioning
confidence: 99%
“…However, in this area larval dispersion could be strongly dependent on the bottom current speed (Farina et al 2018). The presence of "source-sink" dynamics via larval dispersal mediated by bottom current speed could affect conservation and management strategies for sustainable fisheries (Romagnoni et al, 2020;Kritzer and Sale 2004;Kerr et al, 2016). This is especially important for conservation requirements in a Marine Reserve (Paterno et al, 2017) and it is an aspect of concern for future research in this area.…”
Section: Manuscript To Be Reviewedmentioning
confidence: 99%