Tidal and diel fluctuations in abundance of meiobenthic copepods on an intertidal estuarine sandbank

Hicks, Grf

doi:10.3354/meps087015

Cited by 14 publications

(9 citation statements)

References 22 publications

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“…The most parsimonious explanation for our inability to detect decreased sediment copepod densities during periods of increased emergence is that emerging copepods resettle rapidly. Few die1 differences in sediment copepod densities also occur in intertidal habitats, which suggests that resettlement from either hydrodynamic advect~on or emergence is rapid (Coull & Feller 1988, Feller et al 1990, Hicks 1992.…”

Section: Discussionmentioning

confidence: 99%

Significance of copepod emergence to benthic, pelagic, and phytal linkages in a subtidal seagrass bed

Walters¹,

Bell²

1994

Mar. Ecol. Prog. Ser.

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The role of meiobenthic copepod emergence in linkages among benthic, pelagic, and phytal habitats was examined in a subtidal seagrass (Tl~alassia testudjnurn) bed at the mouth of Tampa Bay, Florida. USA. On 4 dates the ability of emerging copepods to affect the density and composition of benthic and phytal assemblages was tested during 2 h periods of minimum and maximum emergence. Copepod exchanges between benthic and phytal habitats and the duration of pelagic excursions also were examined throughout a night by measuring settlement into 2 types of sediment traps and onto natural and defaunated seagrass blades. The ability of emerging fauna to disperse through the water column was determined from horizontal collectors. Changes In copepod densities and composition during periods of active emergence did not indicate an unequivocal exchange between sediment and seagrass blade assemblages. Copepod resettlement onto the sediments was greater during periods of increased emergence and suggested that emerging copepods typically did not remain in the water column for a prolonged (> 2 h) time. The dispersal of copepods through the water column was haphazard and unaffected by prevailing currents. Species and habitat affiliation influenced both the dispersal and settlement behaviors of emerging copepods. Although appreciable numbers of sediment-associated copepods can enter and disperse through the water column, our results suggest that the effects of emergence on linkages between benthic, pelagic, and phytal habitats are minimal or limited in duration.

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Section: Discussionmentioning

confidence: 99%

Significance of copepod emergence to benthic, pelagic, and phytal linkages in a subtidal seagrass bed

Walters¹,

Bell²

1994

Mar. Ecol. Prog. Ser.

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“…The dynamics of the water body with respect to current velocity and re-suspension of meiofauna to the water column is argued to affect meiofauna population (Hicks 1992).…”

Section: Discussionmentioning

confidence: 99%

Meiofauna Occurrence and Distribution in Different Substrate Types of Bonny Brackish Wetland of the Niger Delta

Chindah¹,

Braide²

2010

Journal of Applied Sciences and Environmental Management

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ABSTRACT:The meiobenthic community of different sediment types was studied for 12 months between January and December 1997 in the Bnny estuarine environment. Five replicates core samples were collected from three sediment types (Muddy, Sandy and Chikoko sediments). Meiofaunal densities in order of magnitude are muddy (356 to 899 cm 3 ), sandy (278 to 866 cm 3 ) and chikoko (133 to 252 cm 3 ). Most of the taxa groups had higher densities in dry season than in wet season with significant seasonal variations observed for Sandy sediment and Muddy sediment while Chikoko sediment densities did not show significant seasonal variation (t -test < 0.5). The meiofaunal densities for the different sediment types showed marked significant variation (ANOVA, p < 0.05). @ JASEM

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“…Very few studies have, however, looked at more than one species simultaneously in the same habitat (e.g. Hicks 1992, Saigusa & Kazushi 2000.…”

Section: Introductionmentioning

confidence: 99%

Diel and tidal variations of benthic assemblages in sediments associated with boulder fields

Cruz‐Motta

2005

Mar. Ecol. Prog. Ser.

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During daytime low tides, assemblages living in sediments below boulders differ from those living in sediments not overlaid by boulders. It is, however, not known whether these differences are consistent under different tidal or diel conditions. In this study, the composition of assemblages living in sediments associated with boulder fields (below and adjacent to boulders) under different diel (day and night) and tidal (high and low) conditions, was investigated. Significant differences between assemblages living in sediments below boulders and those living in sediments without boulders persisted during different combinations of daylight and state of tide. Species responsible for these differences did, however, change in relation to the level of the tide, but not to time of day. The presence of boulders in sediments allows the coexistence of species usually found on rocky substrata with those usually found in sediments. Mechanisms to explain intertidal movements of invertebrates in either hard or soft-bottom benthic assemblages have been very well described in the literature. The patterns of spatial distribution, in relation to diel and tidal fluctuations, of individual taxa found in this study, however, cannot easily be explained by these mechanisms. Consequently, the mechanisms of migrational movements of benthic assemblages associated with boulder fields need development of new conceptual models. A model considering the structural complexity of the boulder fields and the interactions between hard-and soft-bottom habitats is proposed herein.

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Tidal and diel fluctuations in abundance of meiobenthic copepods on an intertidal estuarine sandbank

Cited by 14 publications

References 22 publications

Significance of copepod emergence to benthic, pelagic, and phytal linkages in a subtidal seagrass bed

Significance of copepod emergence to benthic, pelagic, and phytal linkages in a subtidal seagrass bed

Meiofauna Occurrence and Distribution in Different Substrate Types of Bonny Brackish Wetland of the Niger Delta

Diel and tidal variations of benthic assemblages in sediments associated with boulder fields

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