Effect of environmental variability and spawner characteristics on the recruitment of Baltic herring Clupea harengus populations

Cardinale, Massimiliano; Möllmann, Christian; Bartolino, Valerio; Casini, Michèle; Kornilovs, Georgs; Raid, Tiit; Margoński, Piotr; Grzyb, Anna N.; Raitaniemi, Jari; Gröhsler, Tomas; Flinkman, Juha

doi:10.3354/meps08125

Cited by 49 publications

(49 citation statements)

References 50 publications

(47 reference statements)

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“…The drop in WAA and condition of the spawners could have indirectly contributed to the general decrease in the herring stock, by hampering the population recruitment success (Cardinale et al 2009), likely through reduced fecundity and hatching success of the eggs (Laine & Rajasilta 1999). The decrease in herring body growth also directly contributes to explain the sharper decrease in herring spawning stock biomass, than in stock abundance, since the early 1980s (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Linking fisheries, trophic interactions and climate: threshold dynamics drive herring Clupea harengus growth in the central Baltic Sea

Casini¹,

Bartolino²,

Molinero³

et al. 2010

Mar. Ecol. Prog. Ser.

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How multiple stressors influence fish stock dynamics is a crucial question in ecology in general and in fisheries science in particular. Using time-series covering a 30 yr period, we show that the body growth of the central Baltic Sea herring Clupea harengus, both in terms of condition and weight-at-age (WAA), has shifted from being mainly driven by hydro-climatic forces to an interspecific density-dependent control. The shift in the mechanisms of regulation of herring growth is triggered by the abundance of sprat, the main food competitor for herring. Abundances of sprat above the threshold of ~18 × 10 10 ind. decouple herring growth from hydro-climatic factors (i.e. salinity), and become the main driver of herring growth variations. At high sprat densities, herring growth is considerably lower than at low sprat levels, regardless of the salinity conditions, indicative of hysteresis in the response of herring growth to salinity changes. The threshold dynamic accurately explains the changes in herring growth during the past 3 decades and in turn contributes to elucidate the parallel drastic drop in herring spawning stock biomass. Studying the interplay between different stressors can provide fundamental information for the management of exploited resources. The management of the central Baltic herring stock should be adaptive and take into consideration the dual response of herring growth to hydro-climatic forces and food-web structure for a sound ecosystem approach to fisheries. KEY WORDS: Condition · Weight-at-age · WAA · Ecological threshold · Inter-specific densitydependence · Hydro-climate · Herring · Sprat · Ecosystem-based fisheries management · Alternative dynamics Resale or republication not permitted without written consent of the publisher Contribution to the Theme Section 'Threshold dynamics in marine coastal systems'OPEN PEN ACCESS CCESS

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Section: Discussionmentioning

confidence: 99%

“…at age 3+). At age 3+, central Baltic herring are fully reproductive (ICES 2009a) and therefore their mean body weight may have an effect on the stock recruitment success (Cardinale et al 2009). Fish older than 5 yr were excluded since in some years they were scarcely represented in our samples (<10 ind.…”

Section: Methodsmentioning

confidence: 99%

Linking fisheries, trophic interactions and climate: threshold dynamics drive herring Clupea harengus growth in the central Baltic Sea

Casini¹,

Bartolino²,

Molinero³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…Consequently, the net effect of temperature changes may be different, even opposite, according to the status of main prey, competitor, or predator populations. This has recently been examined in several Northeast Atlantic ecosystems, notably the Baltic (Cardinale et al 2009, Lindegren et al 2010, the Barents Sea (Svendsen et al 2007, Stige et al 2010, and the North Sea (Kempf et al 2010).…”

Section: The Stock-recruitment Relationship Is Enhanced By Including mentioning

confidence: 99%

Temporal shifts in recruitment dynamics of North Atlantic fish stocks: effects of spawning stock and temperature

Ottersen

Stige²,

Durant³

et al. 2013

Mar. Ecol. Prog. Ser.

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Effects of variation in spawning stock and sea temperature on long-term temporal patterns in recruitment dynamics of 38 commercially harvested fish stocks in the northern North Atlantic were studied. Different statistical models were explored within a Ricker stock-recruitment framework. This includes, in order of complexity, adding a linear temperature term, a nonlinear (smooth) temperature effect, and non-stationarities (trends in intercept or in temperature effect) and finally allowing for a stepwise change (a threshold). The different models were compared in a uniform approach using Akaike's information criterion corrected for small sample size as the model selection criterion. The relationship between recruitment, spawning stock biomass and temperature varied over time. The most frequent alteration in the non-stationary linear models was, for 14 stocks, in the intercept in recruitment success, suggesting a change in pre-recruit mortality over time. Threshold models performed better than the best linear or nonlinear stationary models for 27 of the stocks, suggesting that abrupt changes (maybe even regime shifts) are common. For half of the stocks studied, the temperature effect was statistically significant when added to the model of the relationship between recruitment success and spawning stock biomass. This includes all 6 of the herring stocks studied, with a positive effect for cold-water stocks and negative effect for stocks in the more temperate southern areas. For the 4 plaice stocks analysed, all located towards the centre of the overall distribution range of plaice, a tendency toward recruitment being favoured by lower temperatures was found.

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“…Latest studies into the Central Baltic Sea herring recruitment-environment relationship [2] revealed as important stock recruitment predictors the temperature and the stock weight-at-age of the spawners. Moreover, the food supply is also considered as a significant predictor, suggesting that changes in climate and/or food web structure may indirectly affect herring recruitment via prey availability for the recruits or spawners.…”

Section: Effect Of Environmental Trendsmentioning

confidence: 99%

“…There is a number of studies published on the Central Baltic Sea herring recruitment-environment relationship [2,3] and on substantial decrease in growth rate of the herring that has been observed since the beginning of the 1980s [4][5][6]. It is reported [7] that the decline in the Central Baltic Sea herring spawning stock biomass was partly caused by the reduction in mean weights-atage.…”

Section: Introductionmentioning

confidence: 99%

Central Baltic Sea herring: effect of environmental trends and fishery management

Aps

Fetissov

Holmgren

et al. 2011

WIT Transactions on Ecology and the Environment

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Uncertainty is an endemic condition of the Baltic Sea herring (Clupea harengus membras, L) fishery management. It is a condition exacerbated by the fishing fleet overcapacity and consequent exploitation of the herring stock at a level believed to be unsustainable. Some sources of uncertainty are mainly related to biology and fishing technique: the unsolved problem of herring assessment and management units, the recruitment-environment relationship and the reduction in mean weights-at-age, uncertain ageing of fish, the problem of unaccounted fishing mortality caused by the fish selection through the trawl net. Fishing fleet overcapacity is believed to be behind of the regulatory overfishing when setting the Total Allowable Catches (TACs) higher than the scientific advice (decision overfishing) and tolerating the extensive underreporting of catches (implementation overfishing). Two scenarios for the Central Baltic Sea herring fishery management options are constructed and the Bayesian networks are used to represent and update uncertainties encountered in the process of the management related situation assessment. First scenario represents the current status of the fishery management resulting in fishing mortality (F) higher than F MSY -the fishing mortality that corresponds to the Maximum Sustainable Yield (MSY). The second scenario demonstrates the assumed potential impact of economic incentives (e.g. zoning, individual transferable quotas (ITQs), territorial use rights etc.) on the reduction of excessive fishing capacity and bringing actual fishing mortality closer to F MSY .

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Effect of environmental variability and spawner characteristics on the recruitment of Baltic herring Clupea harengus populations

Cited by 49 publications

References 50 publications

Linking fisheries, trophic interactions and climate: threshold dynamics drive herring Clupea harengus growth in the central Baltic Sea

Linking fisheries, trophic interactions and climate: threshold dynamics drive herring Clupea harengus growth in the central Baltic Sea

Temporal shifts in recruitment dynamics of North Atlantic fish stocks: effects of spawning stock and temperature

Central Baltic Sea herring: effect of environmental trends and fishery management

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