Modelling the predation, growth and population dynamics of fish within a spatially-resolved shelf-sea ecosystem model

Bryant, Andrew; Heath, Michael R.; Broekhuizen, Niall; Ollason, J. G.; Gurney, William; Greenstreet, Simon P. R.

doi:10.1016/0077-7579(95)90055-1

Cited by 34 publications

(12 citation statements)

References 27 publications

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“…Readers wishing to use particular data presented should consult the text and relevant cited literature in order that a reasonable degree of precision might be assessed. The total macrobenthic biomass was apportioned between three guilds, carnivores, deposit feeders and filter feeders following Bryant et al (1995). However, while these authors assigned between 2% and 5% of the total biomass to the macrobenthos carnivore group, we now believe this to be an underestimate.…”

Section: Benthosmentioning

confidence: 94%

“…Assuming a conversion factor to ash-free dry weight of 0.136 (see above) and carbon fraction of ash-free dry weight of 0.6 (e.g. Bryant et al, 1995), this is equivalent to 5.47 gAFDW m 2 and 3.28 gC m 2…”

Section: Benthosmentioning

confidence: 99%

“…In the discussion above it is clear that the potential zooplankton production is sufficient to support these higher predation rates. In quarter 4, pelagic planktivorous fish stop growing and may actually lose weight (Bryant et al, 1995), and this negative production, combined with predation losses, results in a fall in the standing crop biomass. Negative production in fish still feeding gives rise to negative gross growth efficiencies reflecting continuing metabolic costs.…”

Section: Food Supply To Fishmentioning

confidence: 99%

“…Biomass density and total North Sea biomass of the macrobenthic community were estimated from the ICES North Sea Benthos Survey database (Heip et al, 1992;Basford et al, 1993; see also Bryant et al, 1995), with additional reference to Eleftheriou and Basford (1989) and Basford et al (1990). The survey was carried out in April and, in the absence of seasonal data, it was assumed to be valid for the whole year.…”

Section: Benthosmentioning

confidence: 99%

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Seasonal variation in the consumption of food by fish in the North Sea and implications for food web dynamics

Greenstreet

Bryant

Broekhuizen

et al. 1997

ICES Journal of Marine Science

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Previous North Sea food web studies are reviewed. These studies used estimates of primary production and fish energy requirements, then manipulated the energy flow pathway between the two to balance the budget. The resulting pathways largely ignored actual fish diets and consumption rates. In the present paper, North Sea biomass flow food webs are constructed for each quarter of the year from published estimates of fish abundance, diet and daily food consumption, and using long-term Continuous Plankton Recorder and North Sea benthos survey data. Estimates of daily production of each component of the web are derived from specific daily growth and gross growth efficiency measurements. The flow of biomass from secondary production to fish is sufficient to supply the food requirements of planktivorous pelagic fish and benthivorous demersal fish. Piscivorous pelagic fish obtain much of their food requirements from outside the North Sea. The food requirements of piscivorous demersal fish also do not appear to be adequately supplied from within the North Sea, but, in this case, immigration is not thought to provide the shortfall. The high predation pressure on demersal piscivores may explain why this group appears to be especially vulnerable to fishing. The supply of biomass from primary production to secondary producers appears to be sufficient without the need to postulate import into the North Sea. Indeed, the supply to the benthos is such that a detritivore trophic level can be inserted between organic settlement and production of macrobenthos

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Section: Benthosmentioning

confidence: 94%

Section: Benthosmentioning

confidence: 99%

Section: Food Supply To Fishmentioning

confidence: 99%

Section: Benthosmentioning

confidence: 99%

See 2 more Smart Citations

Seasonal variation in the consumption of food by fish in the North Sea and implications for food web dynamics

Greenstreet

Bryant

Broekhuizen

et al. 1997

ICES Journal of Marine Science

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“…During the last few years, various food web models have been published emphasizing the importance of linking lower trophic levels (LTLs) with higher trophic levels (HTLs) for exploring the environment and fishing effects on ecosystems (Travers et al, 2007). For example, Bryant et al (1995) proposed the development and analysis of a fish module within the nutrient-based ecosystem model ERSEM (Baretta et al, 1995). NEMURO.FISH (Ito et al, 2004;Megrey et al, 2007;Rose et al, 2007) has been developed for saury (Cololabis saira) and herring (Clupea harengus) through linking a LTL biogeochemical model with a HTL fish population-bioenergetics model.…”

Section: Introductionmentioning

confidence: 99%

Application of a bioenergetics growth model for European anchovy (Engraulis encrasicolus) linked with a lower trophic level ecosystem model

et al. 2011

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A bioenergetics model is implemented for European anchovy (Engraulis encrasicolus) and applied to the north-eastern Aegean Sea (eastern Mediterranean Sea). The model reproduces the growth of anchovy in a one-way linked configuration with a lower trophic level (LTL) ecosystem model. The LTL model provides densities for three zooplankton functional groups (heterotrophic flagellates, microzooplankton and mesozooplankton) which serve as available energy via consumption for the anchovy model. Our model follows the basic structure of NEMURO.FISH type models (North Pacific Ecosystem Model for Understanding Regional Oceanography for Including Saury and Herring). Several model parameters were specific for the Mediterranean or the Black Sea anchovy and some others were adopted from related species and NEM-URO.FISH due to lack of biological information on E. encrasicolus. Simulation results showed that the fastest growth rate occurs during spring and the slowest growth rate from August to December. Zooplankton abundance during autumn was low implying that decreased prey density lead to a reduction in anchovy weight, especially for the age-3 class. Feeding parameters were adjusted to adequately fit the model growth estimates to available weight-at-age data. A detailed sensitivity analyses is conducted to evaluate the importance of the biological processes (consumption, respiration, egestion, specific dynamic action, excretion and egg production) and their parameters to fish growth. The most sensitive parameters were the intercept and exponent slope of the weight-dependent consumption and respiration process equations. Fish weight was fairly sensitive to temperature-dependent parameters.

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Predicted seabird distributions in the North Sea: the consequences of being hungry

Ollason

Bryant

Davis

et al. 1997

ICES Journal of Marine Science

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Modelling the predation, growth and population dynamics of fish within a spatially-resolved shelf-sea ecosystem model

Cited by 34 publications

References 27 publications

Seasonal variation in the consumption of food by fish in the North Sea and implications for food web dynamics

Seasonal variation in the consumption of food by fish in the North Sea and implications for food web dynamics

Application of a bioenergetics growth model for European anchovy (Engraulis encrasicolus) linked with a lower trophic level ecosystem model

Predicted seabird distributions in the North Sea: the consequences of being hungry

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