An increase in the abundance of anchovies and sardines in the north‐western North Sea since 1995

Beare, D. J.; Burns, Finlay; Jones, Emma; Peach, Kevin; Portilla, Enrique; Greig, Tony; McKenzie, E.; Reid, David G.

doi:10.1111/j.1529-8817.2003.00790.x

Cited by 98 publications

(73 citation statements)

References 14 publications

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“…Anchovy and sardine have moved northward into the North Sea and adjacent waters in the past few decades (Alheit et al 2012, Beare et al 2004, Montero-Serra et al 2015, Petitgas et al 2012). This shift is consistent with warming resulting from climate change.…”

Section: Distribution Shiftsmentioning

confidence: 99%

Climate, Anchovy, and Sardine

Checkley

Asch

Rykaczewski

2017

Annu. Rev. Mar. Sci.

175

129

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Anchovy and sardine populated productive ocean regions over hundreds of thousands of years under a naturally varying climate, and are now subject to climate change of equal or greater magnitude occurring over decades to centuries. We hypothesize that anchovy and sardine populations are limited in size by the supply of nitrogen from outside their habitats originating from upwelling, mixing, and rivers. Projections of the responses of anchovy and sardine to climate change rely on a range of model types and consideration of the effects of climate on lower trophic levels, the effects of fishing on higher trophic levels, and the traits of these two types of fish. Distribution, phenology, nutrient supply, plankton composition and production, habitat compression, fishing, and acclimation and adaptation may be affected by ocean warming, acidification, deoxygenation, and altered hydrology. Observations of populations and evaluation of model skill are essential to resolve the effects of climate change on these fish.

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Section: Distribution Shiftsmentioning

confidence: 99%

Climate, Anchovy, and Sardine

Checkley

Asch

Rykaczewski

2017

Annu. Rev. Mar. Sci.

175

129

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“…Cury and Roy, 1989;Borja et al, 1998;Roy et al, 2007). Survey data indicate that European sardine (Sardina pilchardus) and European anchovy (Engraulis encrasicolus) dramatically increased in the southern North Sea in the mid-1990s (Beare et al, 2004) and the first evidence of spawning activity of sardine and anchovy in the North Sea was detected during the cruises made in [2003][2004] as part of the German GLOBEC programme (J. Alheit, IOW, Warnemünde Germany, pers.…”

Section: Introductionmentioning

confidence: 99%

Co-occurrence of European sardine (Sardina pilchardus), anchovy (Engraulis encrasicolus) and sprat (Sprattus sprattus) larvae in southern North Sea habitats: Abundance, distribution and biochemical-based condition

Kanstinger

2009

Sci. Mar.

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SUMMARY: Spawning populations of European sardines (Sardina pilchardus) and anchovies (Engraulis encrasicolus)have become re-established in the southern North Sea after a ~30-year absence and now co-occur with sprat (Sprattus sprattus). Consequently, little is known concerning potential interactions among these three species in this region. Based upon parallel cruises conducted in June/July 2005, we compared the larval abundance, size-distributions and biochemical-based condition of these species among 1) nearshore (Wadden Sea) areas and offshore (German Bight) areas that were 2) vertically mixed, 3) frontal zones, or 4) stratified waters. In general terms, larval condition (RNA:DNA) was relatively high at all stations. Although fronts clearly acted to concentrate larvae, larval condition was not necessarily higher. For example 9% of sardines captured at the tidal mixing front were categorised as starving, while no starving larvae were sampled in the stratified water masses. Habitats of sardine and sprat larvae were similar, whereas anchovies were primarily restricted to nearshore areas. This is the first study examining the potential role of near-and offshore habitats as nursery areas and the extent to which resource (habitat) partitioning exists among the larvae of sprat and newly established anchovy and sardine in the North Sea.Keywords: clupeiform fish, larvae, habitats, RNA:DNA, growth. RESUMEN: CO-APARICIÓN DE LAS LARVAS DE SARDINA EUROPEA (SARDINA PILCHARDUS), ANCHOA (ENGRAULIS ENCRASICOLUS) Y ES-PADÍN (SPRATTUS SPRATTUS) EN HÁBITATS DEL SUR DEL MAR DEL NORTE:ABUNDANCIA, DISTRIBUCIÓN Y CONDICIÓN BIOQUÍMICA. -La puesta de la sardina (Sardina pilchardus) y de la anchoa (Engraulis encarsicolus) se han restablecido en el sur del mar del Norte después de casi 30 años de ausencia, apareciendo ahora juntamente con el espadín (Spattus sprattus). Consecuentemente, poco se conoce de las interacciones entre estas tres especies en esta región. Se ha llevado a cabo dos campañas entre Junio y Julio 2005, comparando la abundancia larvaria, distribución de tallas y la relación ARN:ADN de estas tres especies de clupeidos entre: 1) zonas costeras (Mar Wadden) y mar abierto (Bahía Alemana), 2) mezcla vertical, 3) zonas frontales y 4) masas de aguas estratificadas. En términos generales, la condición larvaria (relación ARN:ADN) fue relativamente alta en todas las estaciones. Aunque las zonas frontales actúan claramente como concentradoras de larvas, la condición larvaria no fue necesariamente más alta allí. Por ejemplo, el 9% de las larvas de sardinas capturadas en la zona de mezcla de marea fue clasificada en estado de inanición, mientras que las larvas de sardinas en estado de no inanición fueron capturadas en zonas de masas de aguas estratificadas. El hábitat de las larvas de sardina y de las larvas de espadín fueron más similares entre sí, mientras que las larvas de anchoas fueron encontradas en zonas costeras. Este estudio es el primero en investigar la importancia del hábitat de estas especies en zonas costeras y mar a...

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“…The preference of this species for higher temperatures may be responsible for its occurrence in the mixed but warmer areas of the German Bight (Aurich 1953). Survey data indicate that European sardine and anchovy dramatically increased in the southern North Sea in the mid 1990s (Beare et al 2004, Petitgas et al 2012) and spawning activity of sardine and anchovy in the North Sea was detected during the cruises made in 2003 to 2004 as part of the German GLOBEC program (M. Peck, pers. obs.).…”

Section: Discussionmentioning

confidence: 99%