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Nursery function of an estuarine tidal marsh for the brown shrimp Crangon crangon

(1997) JOURNAL OF SEA RESEARCH. 38(1-2). p.109-121
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Abstract
The brown shrimp Crangon crangon migrates into the brackish part of the Westerschelde estuary (southwest Netherlands) shortly after metamorphosis and uses the tidal marsh habitat as a nursery until reaching a total length of about 15 mm. The importance of the marsh as a nursery was evaluated by estimating foraging activity, predation mortality and residence time. In early postlarval stages, C. crangon utilised the intertidal creeks of an estuarine tidal marsh from (March-April) until late autumn (October-November). Postlarval shrimp leaving the marsh with the ebb tide always had significantly more food in their stomachs than shrimp entering the marsh with the incoming flood water. Predation upon the shrimp population was relatively low during most months, but it increased between August and October when common gobies, Pomatoschistus microps, were present in high densities. There was also predation by the small seabass Dicentrarchus labrax. The marsh creeks function both as foraging areas and as predation refuge. Depending on temperature, postlarval shrimp stayed in the marsh for a period of two to three weeks. Quantitatively, the value of the marsh as a nursery area had changed drastically during a second year of sampling, illustrating high natural year-to-year variability. However, the seasonal pattern remained. Recruitment to the subtidal adult population represents an export of animals from the marsh to the estuary. This export is negligible in terms of biomass (as compared to the total biomass of the estuarine population) but it may be important in terms of numbers of individuals.
Keywords
Crangon, tidal marsh, Westerschelde estuary, feeding ground, predation refuge, WADDEN SEA, SALT-MARSH, BRISTOL CHANNEL, PREDATION RISK, FOOD, HABITATS, CONSUMPTION, CRUSTACEANS, POPULATION, SELECTION

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Citation

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Chicago
Cattrijsse, André, Hederick R Dankwa, and Jan Mees. 1997. “Nursery Function of an Estuarine Tidal Marsh for the Brown Shrimp Crangon Crangon.” Journal of Sea Research 38 (1-2): 109–121.
APA
Cattrijsse, André, Dankwa, H. R., & Mees, J. (1997). Nursery function of an estuarine tidal marsh for the brown shrimp Crangon crangon. JOURNAL OF SEA RESEARCH, 38(1-2), 109–121.
Vancouver
1.
Cattrijsse A, Dankwa HR, Mees J. Nursery function of an estuarine tidal marsh for the brown shrimp Crangon crangon. JOURNAL OF SEA RESEARCH. 1997;38(1-2):109–21.
MLA
Cattrijsse, André, Hederick R Dankwa, and Jan Mees. “Nursery Function of an Estuarine Tidal Marsh for the Brown Shrimp Crangon Crangon.” JOURNAL OF SEA RESEARCH 38.1-2 (1997): 109–121. Print.
@article{176084,
  abstract     = {The brown shrimp Crangon crangon migrates into the brackish part of the Westerschelde estuary (southwest Netherlands) shortly after metamorphosis and uses the tidal marsh habitat as a nursery until reaching a total length of about 15 mm. The importance of the marsh as a nursery was evaluated by estimating foraging activity, predation mortality and residence time. In early postlarval stages, C. crangon utilised the intertidal creeks of an estuarine tidal marsh from (March-April) until late autumn (October-November). Postlarval shrimp leaving the marsh with the ebb tide always had significantly more food in their stomachs than shrimp entering the marsh with the incoming flood water. Predation upon the shrimp population was relatively low during most months, but it increased between August and October when common gobies, Pomatoschistus microps, were present in high densities. There was also predation by the small seabass Dicentrarchus labrax. The marsh creeks function both as foraging areas and as predation refuge. Depending on temperature, postlarval shrimp stayed in the marsh for a period of two to three weeks. Quantitatively, the value of the marsh as a nursery area had changed drastically during a second year of sampling, illustrating high natural year-to-year variability. However, the seasonal pattern remained. Recruitment to the subtidal adult population represents an export of animals from the marsh to the estuary. This export is negligible in terms of biomass (as compared to the total biomass of the estuarine population) but it may be important in terms of numbers of individuals.},
  author       = {Cattrijsse, Andr{\'e} and Dankwa, Hederick R and Mees, Jan},
  issn         = {1385-1101},
  journal      = {JOURNAL OF SEA RESEARCH},
  keyword      = {Crangon,tidal marsh,Westerschelde estuary,feeding ground,predation refuge,WADDEN SEA,SALT-MARSH,BRISTOL CHANNEL,PREDATION RISK,FOOD,HABITATS,CONSUMPTION,CRUSTACEANS,POPULATION,SELECTION},
  language     = {eng},
  number       = {1-2},
  pages        = {109--121},
  title        = {Nursery function of an estuarine tidal marsh for the brown shrimp Crangon crangon},
  url          = {http://dx.doi.org/10.1016/S1385-1101(97)00036-1},
  volume       = {38},
  year         = {1997},
}

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