Estimating limits to the spatial extent and suitability of sole (Solea solea) nursery grounds in the Dover Strait

Eastwood, Paul D.; Meaden, G.; Carpentier, André C.; Rogers, Stuart I.

doi:10.1016/s1385-1101(03)00079-0

Cited by 46 publications

(42 citation statements)

References 32 publications

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“…Other mapping studies have described similar habitat associations for juvenile flatfish. Eastwood et al (2003) found that common sole in the English Channel favored shallow depths (3e10 m), temperatures between 16 and 18 C, and salinities greater than 34. Likewise, Stoner et al (2001) found that young-of-the-year winter flounder, Pseudopleuronectes americanus, in New Jersey estuaries concentrated themselves in waters less than 2 m, and warmer than 22 C. Notably, our distribution results support the classification of embayments into distinct habitat types (termed bay, lagoon and estuary in this study).…”

Section: Environmental Influence On Juvenile Distributionsmentioning

confidence: 94%

“…To date, this spatially explicit approach has been used in combination with Generalized Linear Models (Riou et al, 2001), Generalized Additive Models (Stoner et al, 2001), regression quantiles (Eastwood et al, 2003) and regression trees (this study) to achieve three basic goals: (1) quantify the spatial extent of nursery habitat types, (2) relate finfish densities to key environmental factors that vary among nursery habitat types, and (3) produce estimates for nursery habitat productivity in terms of 0-group individuals available to recruit to adult stocks. In our study, we employed regression trees (to evaluate #2) and an IDW interpolation method (to assess #1,3) separately, as opposed to modeling the distribution of environmental factors within a GIS to infer habitat usage.…”

Section: Utility Of Mapping Nursery Habitat Availability and Usementioning

confidence: 99%

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Availability, usage and expected contribution of potential nursery habitats for the California halibut

Fodrie

Mendoza

2006

Estuarine, Coastal and Shelf Science

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Coastal ecosystems have been identified as important nursery habitats for many of the world's fishery species. Beyond this, there remain many questions about what exactly constitutes high-value, even critical, habitat for juvenile fish. A first step in investigating nursery habitat value should be to catalogue the spatial coverage (availability) of all potential nursery habitats as well as the distribution (usage) of juvenile fish within those habitats. We conducted two years of fall surveys in the nearshore areas of San Diego County, CA, examining the spatial distribution of 0-group California halibut, Paralichthys californicus. The database generated by 527 otter trawls and block-net seine collections was used to produce a series of models employing regression trees to study the abiotic factors (water column and bottom features) that affect juvenile distributions. Along the exposed coast, highest 0-group densities (0. ). The spatial coverage of potential nursery habitats was calculated using a Geographic Information System (GIS) database, and the total number of resident 0-group halibut within each site was estimated (habitat area Â juvenile halibut density) as a proxy for expected contribution of halibut advancing to the adult stock from each nursery. Although 85% of the potential nursery habitat area occurred along the exposed coastline, 69% (2003) to 58% (2004) of 0-group halibut resided in protected embayments. Embayment contribution is much greater in the southern half of the study region, largely due to Mission and San Diego bays. We conclude that all nursery habitat types demonstrate the potential to contribute significantly to stock fitness, and that in general, shallow and better-protected habitats are highly utilized nurseries for 0-group halibut and deserve special attention in management or conservation efforts.

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Section: Environmental Influence On Juvenile Distributionsmentioning

confidence: 94%

Section: Utility Of Mapping Nursery Habitat Availability and Usementioning

confidence: 99%

Availability, usage and expected contribution of potential nursery habitats for the California halibut

Fodrie

Mendoza

2006

Estuarine, Coastal and Shelf Science

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“…Several other studies applied models between catch rates and environmental variables by using a quantile regression method at different depth strata for T. obesus (Song and Zhou 2010), T. albacores (Wu and Song 2010) and Prionace glauca . Quantile regression is a robust technique that can provide a good approach to detecting how a species may respond to environmental fluctuations (Eastwood et al 2003). When the distribution of parameters is free and even though part of the limiting factors is used, it can more accurately estimate the responses of a species with respect to habitat variables, especially for the upper quantiles in regression models (Cade and Noon 2003).…”

Section: Introductionmentioning

confidence: 99%

Development of integrated habitat indices for bigeye tuna, Thunnus obesus, in waters near Palau

Song

Nishida

et al. 2012

Mar. Freshwater Res.

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Abstract.A survey was conducted in waters near Palau in 2005, to improve our understanding of the relationship between environmental variables and the spatial distributions of Thunnus obesus. Catch rates and environmental variables (water temperature, salinity and dissolved oxygen) at six depth strata between 40 and 280 m were collected at 77 sampling stations in the survey. Models were developed to estimate an integrated habitat index (IHI) for T. obesus on the basis of quantile regression. The findings of the present study were as follows: (1) the performance of IHI models in predicting habitat utilisation by T. obesus was good, (2) the impacts of the weighted average temperature and dissolved oxygen were significant on the spatial distribution of T. obesus, (3) the influence of the environmental variables on T. obesus distribution differed among different depth strata, (4) the present study provides an effective approach to predict the spatial distribution of the pelagic fishes caught by longline and (5) the weighted average temperature and dissolved oxygen should be included in the T. obesus catch per unit effort (CPUE) standardisations.

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“…The shallow marine coastal zones of the Southern Bight of the North Sea (SBNS) and the Eastern English Channel (EEC) provide nursery areas, identified as essential fish habitat, for a wide variety of commercial fish species, particularly flatfish (Amara 2003, Eastwood et al 2003. However, this coastline is also characterised by substantial urban and industrial development, resulting in heavy inputs of chemical contaminants, as well as significant loss or alteration of marine habitat at some locations.…”

Section: Introductionmentioning

confidence: 99%

Growth and condition indices in juvenile sole Solea solea measured to assess the quality of essential fish habitat

Amara¹,

Méziane²,

Gilliers³

et al. 2007

Mar. Ecol. Prog. Ser.

143

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) and highest condition indices (mean K = 1.19; TAG:ST = 2.18) at the Authie, Canche and Somme estuaries. The indices measured in this study correlated well with anthropogenic disturbance and may provide a useful tool to assess habitat quality. Sites with highest sediment chemical contaminants had the lowest habitat quality and, through growth and lipid-storage limitation, could dramatically lower over-winter survival of the juveniles living in these nursery grounds.

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Estimating limits to the spatial extent and suitability of sole (Solea solea) nursery grounds in the Dover Strait

Cited by 46 publications

References 32 publications

Availability, usage and expected contribution of potential nursery habitats for the California halibut

Availability, usage and expected contribution of potential nursery habitats for the California halibut

Development of integrated habitat indices for bigeye tuna, Thunnus obesus, in waters near Palau

Growth and condition indices in juvenile sole Solea solea measured to assess the quality of essential fish habitat

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