Seasonal changes in distribution of intertidal macrofauna in the lower Mersey Estuary, U.K.

Moore, D.M.

doi:10.1016/0302-3524(78)90069-5

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…Seasonal changes in zonation of intertidal infauna may occur because of erosion, deposition, and profile changes on the shore (Ansell et al 1972;Moore 1978;Yco & Risk 1979), or because of the temperature regime (Hager & Croker 1979;Reading 1979). or the salinity regime (Boesch 1977).…”

Section: Seasonal Zonation Changesmentioning

confidence: 98%

Persistence of infaunal polychaete zonation patterns on a sheltered, intertidal sand flat

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1984

New Zealand Journal of Marine and Freshwater Research

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Macrofaunal polychaete densities across a fine-sand intertidal flat in Pauatahanui Inlet, North Island, New Zealand, were examined seasonally from a pair of adjacent transects. Density patterns had shore-normal trends, despite weak tidal-cycle environmental gradients. Abundances frequently corresponded between transects separated by 15 m. Capitella sp., Nicon aestuariensis, and Scolecolepides benhami declined in density downshore, whereas Heteromastus filiformis increased. Microspio maori and Axiothella serrata lacked strong trends. Boccardia acus' density was affected by the size and number of the bivalve Chione stutchburyi, its substratum. Basic zonation patterns of each species persisted over a 2 year period. Within the density concentrations seasonal cycles were apparent, with some population redistribution attributable to differential mortality (H. filiformis), to recruitment (M. maori, A. serrata), or to migration (N. aestuariensis, S. benhami).

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Section: Seasonal Zonation Changesmentioning

confidence: 98%

Persistence of infaunal polychaete zonation patterns on a sheltered, intertidal sand flat

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1984

New Zealand Journal of Marine and Freshwater Research

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“…Richness in organic matter impacts the settling of benthic communities preyed upon by juvenile flatfishes. The amount of organic matter is the highest in these areas, and conditions are particularly suitable for the development of benthic invertebrate prey (Moore 1978;Elliott and Taylor 1989). High land-based run-off is favourable to the productivity of invertebrate prey and consequently to the productivity of flatfish species.…”

Section: In Situ Estimation Population Scalementioning

confidence: 99%

“…When densities of juveniles are pooled for all marine species, the maximum juvenile density is observed in the middle mesohaline region of estuaries (Nicolas et al 2010). The amount of organic matter is the highest in these areas, and conditions are particularly suitable for the development of benthic invertebrate prey (Moore 1978;Elliott and Taylor 1989). This high abundance of benthic prey leads to high fish density, especially of juvenile marine species (Courrat et al 2009).…”

Section: In Situ Estimation Population Scalementioning

confidence: 99%

The food limitation hypothesis for juvenile marine fish

2013

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Coastal zones are productive areas that serve as nursery grounds for a large number of marine species. However, the processes involved in survival success during the juvenile phase are not well‐known. Some authors suggest that the availability of prey is important to support the production of pre‐recruit fish whose fitness is enhanced through optimal feeding conditions. Accordingly, recruitment is limited by the carrying capacity of the nursery habitat. In contrast, other authors state that the carrying capacity of the nursery grounds is not fully exploited, suggesting that there is no effect of food limitation. This study combines an overview of the literature, focused on flatfish that are especially dependent on coastal and estuarine nursery grounds, an extension to other marine fishes and a modelling approach on growth and survival of juvenile fish to explore the controversy of food limitation in their nursery grounds. We demonstrate that the relative lack of growth limitation observed for young marine fishes at the individual scale is related to an observational bias: fish have been affected by size‐selective mortality linked to food limitation, but only surviving individuals are observed. As the population is skewed towards the faster‐growing juveniles, the growth of survivors remains close to optimal, even when food resources are limited. Food limitation is of major influence in determining the carrying capacity of the nursery habitat. To sustain marine fish populations and related fisheries, management action is needed to protect coastal and estuarine areas and maintain or restore nursery productivity.

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“…daily) variations (Morrisey et al, 1992). Various studies have reported seasonal effects in invertebrate abundance and biomass, but of varying magnitudes (Moore, 1978;Reise, 1985;. Seasonal variation in invertebrate abundance is generally the result of recruitment events, which can be detected by using a 0.5 mm sieve size or smaller (Edgar et al, 1999a).…”

Section: Temporal Variationmentioning

confidence: 98%

Spatial variation of intertidal macroinvertebrates and environmental variables in Robbins Passage wetlands, NW Tasmania

2007

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Macroinvertebrate composition, abundance and biomass were investigated at four intertidal sites throughout the Robbins Passage wetlands, Tasmania, over a 12-month period, in order to identify differences among and within sites, and to determine whether environmental variables could explain these differences. As this region is the most important shorebird area in Tasmania, we wanted to quantify the potential food source for shorebirds within the wetlands. Thirty-five taxa from 28,928 individuals were identified, with a mean abundance of 6026.6 ind m -2 and biomass of 27.1 gDW m -2 . Bivalves and gastropods dominated the assemblage in terms of abundance and biomass (79% and 60%, respectively). There was a significant interaction among tidal level, site and season for invertebrate abundance and diversity, while biomass differed significantly among sites. In general, the mid-intertidal stratum had the greatest invertebrate density and diversity, while the low intertidal stratum had the greatest biomass. Community composition varied among the four sites, with the bivalve Paphies elongata dominating at two of the sites, while gastropods and polychaetes were more abundant at the other sites. Differences in invertebrate composition and abundance could partly be explained by seagrass biomass, i.e., dry mass of seagrass leaves and roots. Areas with seagrass had increased invertebrate abundance and diversity, but mean sediment particle size, % organic carbon and % seagrass cover had no significant effect. These results will assist in the investigation of habitat use by shorebirds and the identification of important shorebird feeding areas within the wetlands.

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Seasonal changes in distribution of intertidal macrofauna in the lower Mersey Estuary, U.K.

Cited by 11 publications

References 12 publications

Persistence of infaunal polychaete zonation patterns on a sheltered, intertidal sand flat

Persistence of infaunal polychaete zonation patterns on a sheltered, intertidal sand flat

The food limitation hypothesis for juvenile marine fish

Spatial variation of intertidal macroinvertebrates and environmental variables in Robbins Passage wetlands, NW Tasmania

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