Geospatial analysis of habitat use by silver hake Merluccius bilinearis in the Gulf of Maine

Pereira, Jose J.; Schultz, Eric T.; Auster, Peter J.

doi:10.3354/esr00576

Cited by 3 publications

(5 citation statements)

References 27 publications

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“…The geostatistical aggregation curves suggest that during the study period, G. argenteus exhibited a proportional density population structure in which local abundance changes in proportion to changes in total species abundance. This is consistent with the proportional density dynamic model (D2) (Petitgas 1998) which is driven by a site-dependent mechanism (Petitgas 1998, Pereira et al 2014, namely, the physical habitat preferences of the species during the period 1998−2019 were not modified by changes in its annual abundance. This spatial pattern has been previously observed in gadiforms in the eastern (e.g.…”

Section: Discussionsupporting

confidence: 86%

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Habitat use by Gadiculus argenteus (Pisces, Gadidae) in the Galician and Cantabrian Sea waters (NE Atlantic)

Arronte

González-Irusta

Somavilla

et al. 2022

Mar. Ecol. Prog. Ser.

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Forage fish species play a crucial role in most ecosystems, transferring energy from plankton to larger fishes. Therefore, understanding the factors driving the dynamics of forage fish populations is essential in marine ecosystems. Gadiculus argenteus is an important forage fish species in the Galicia and Cantabrian Sea ecosystem. In this study, the influence of several biotic and abiotic factors on the distribution of this species was examined using generalized additive models in a 2-step approach. G. argenteus habitat preference was not affected by changes in annual abundance during the study period (1998-2019). From the variables selected in the final models, depth and geographic location (latitude and longitude) were the most important factors to describe the presence of G. argenteus. Peak abundance was found on the upper slope and although the species was found throughout the study area, its higher abundance values were located in Galician waters. The species seemed to avoid coarse sand bottoms, with mean chlorophyll a concentration showing a positive effect on the presence and abundance of G. argenteus. Interestingly, the observed aggregations of G. argenteus showed a remarkable similarity to the commercial trawling footprint in the area, suggesting a strong link between the distribution of this forage species and the distribution of its predators, most of which are important commercial species. Further work should focus on a better understanding of this relationship to provide important information on the study of the structure and functioning of the marine ecosystem of the northern Spanish continental shelf.

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Section: Discussionsupporting

confidence: 86%

“…This spatial pattern has been previously observed in gadiforms in the eastern (e.g. Houghton 1987, Petitgas 1998, González-Irusta & Wright 2016a,b, 2017 and western North Atlantic (Tamdrari et al 2010, Pereira et al 2014.…”

Section: Discussionsupporting

confidence: 82%

Habitat use by Gadiculus argenteus (Pisces, Gadidae) in the Galician and Cantabrian Sea waters (NE Atlantic)

Arronte

González-Irusta

Somavilla

et al. 2022

Mar. Ecol. Prog. Ser.

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“…In addition to oceanographic drivers influencing the spatial distribution of Silver Hake, Reed et al (2019) found that the condition of Silver Hake on the Scotian Shelf was largely determined by zooplankton phenology and community composition and was largely unrelated to density-dependent effects. A geospatial analysis of Silver Hake in the GOM indicated that condition varied over small spatial scales and that the population conformed to the proportional density model, in which local population density is a static proportion of the fixed occupied range (Pereira et al 2014). In contrast to the other moderate-quality species, longfin inshore squid had lower predicted EDs offshore and south (GB and Middle Atlantic Bight) than in the north (GOM) during spring.…”

Section: Moderate-quality Preymentioning

confidence: 89%

“…A geospatial analysis of Silver Hake in the GOM indicated that condition varied over small spatial scales and that the population conformed to the proportional density model, in which local population density is a static proportion of the fixed occupied range (Pereira et al. 2014). In contrast to the other moderate‐quality species, longfin inshore squid had lower predicted EDs offshore and south (GB and Middle Atlantic Bight) than in the north (GOM) during spring.…”

Section: Discussionmentioning

confidence: 99%

Variation in energy density of northwest Atlantic forage species: Ontogenetic, seasonal, annual, and spatial patterns

Wuenschel,

Bean,

Rajaniemi

et al. 2024

Mar Coast Fish

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ObjectiveEnergy density (ED) estimates for marine forage species have been limited, impeding our understanding of this important trophic level. We studied the EDs of eight key forage species: Alewife Alosa pseudoharengus, Atlantic Herring Clupea harengus, Silver Hake Merluccius bilinearis, Northern Sand Lance Ammodytes dubius, Atlantic Mackerel Scomber scombrus, Butterfish Peprilus triacanthus, northern shortfin squid Illex illecebrosus, and longfin inshore squid Doryteuthis pealeii (also known as Loligo pealeii).MethodsSamples were obtained during spring and fall bottom trawl surveys across five regions (Gulf of Maine, Georges Bank, southern New England, northern Middle Atlantic Bight, and southern Middle Atlantic Bight) from 2017 to 2019. In the laboratory, we developed predictive relations between the percent dry weight (%DW) and ED (kJ/g wet weight) determined by proximate composition analysis (n = 606; r2 = 0.76–0.98) to estimate the ED of additional samples (n = 4583). For each species, we modeled ED as a function of size, depth, season, and year (as factors) as well as location (latitude, longitude) using generalized additive models (GAMs).ResultAlewife, Atlantic Herring, Northern Sand Lance, Atlantic Mackerel, and Butterfish were classified as high‐quality prey (ED > 6 kJ/g), although Atlantic Herring ED was nearly half the values reported in earlier studies. Silver Hake, northern shortfin squid, and longfin inshore squid were classified as moderate‐quality prey (4 kJ/g < ED < 6 kJ/g). Most species had higher EDs in the fall following summer feeding than in the spring after spawning and/or reduced winter feeding. The best‐fitting GAMs included weight, depth (by season), season, and year effects for most species. Location (by season) explained significant amounts of variation.ConclusionObserved variation in ED across regions, species, seasons, and years provides the empirical data necessary to consider hypotheses related to “upstream” regulation of ED (via environmental drivers and productivity) and “downstream” effects on recruitment for these forage species as well the species that prey on them.

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“…The 4 case study articles presented in this section review the application and advancement of habitatbased models for pelagic species. Pereira et al (2014, this Theme Section) tested 3 predictions of silver hake Merluccius bilinearis distributions and found that this species demonstrated site-dependent patterns of habitat use in the Gulf of Maine, which may be important for its persistence.…”

Section: Case Studies: California Current and Beyondmentioning

confidence: 99%

Geospatial approaches to support pelagic conservation planning and adaptive management

Wedding

Maxwell²,

Hyrenbach³

et al. 2016

Endang. Species. Res.

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Place-based management in the open ocean faces unique challenges in delineating boundaries around temporally and spatially dynamic systems that span broad geographic scales and multiple management jurisdictions, especially in the 'high seas'. Geospatial technologies are critical for the successful design of pelagic conservation areas, because they provide information on the spatially and temporally dynamic oceanographic features responsible for driving species distribution and abundance in the open ocean, the movements of protected species, and the spatial patterns of distribution of potential threats. Nevertheless, there are major challenges to implementing these geospatial approaches in the open ocean. This Theme Section seeks to bridge the gap between geospatial science and marine conservation by discussing the use of innovative approaches to support effective marine conservation planning strategies for pelagic ecosystems. We highlight the results of this collection of contributions in 3 main sections: (1) conceptual advances in pelagic conservation; (2) novel information techno logies and methodologies; and (3) case studies in the California Current and Pacific Ocean.

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Geospatial analysis of habitat use by silver hake Merluccius bilinearis in the Gulf of Maine

Cited by 3 publications

References 27 publications

Habitat use by Gadiculus argenteus (Pisces, Gadidae) in the Galician and Cantabrian Sea waters (NE Atlantic)

Habitat use by Gadiculus argenteus (Pisces, Gadidae) in the Galician and Cantabrian Sea waters (NE Atlantic)

Variation in energy density of northwest Atlantic forage species: Ontogenetic, seasonal, annual, and spatial patterns

Geospatial approaches to support pelagic conservation planning and adaptive management

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