Meiobenthos Ecosystems as Indicators of the Effects of Dredging

Pequegnat, Willis E.

doi:10.1016/b978-0-12-197502-9.50041-1

Cited by 12 publications

(13 citation statements)

References 7 publications

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“…However, meiofauna could be better indicators of environmental stress than macrofauna due to their smaller size, shorter generation time, and a life-style almost always limited to the benthos (Fenchel 1967, Marcotte & Coull 1974, Pequegnat 1975, Cantelmo & Rao 1978, Boucher 1980. The majority of studies dealing with the effects of petroleum hydrocarbons on meiofauna have looked at communities affected by accidental oil spills from tankers or refineries (Rutzler & Sterrer 1970, Wormaldmunities, elements needed to define effects that are caused by oil (Mann & Clarke 1978, Teal & Howarth 1984.…”

Section: Introductionmentioning

confidence: 99%

Responses of benthic meiofauna to long-term, low-level additions of No. 2 fuel oil

Frithsen¹,

Elmgren²,

Rudnick³

1985

Mar. Ecol. Prog. Ser.

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Three experiments were conducted to investigate the responses of benthic rneiofauna to long-term, low-level additions of No. 2 fuel oil in large (13 m3), outdoor tanks (mesocosms) containing sediment and sea water from Narragansett Bay, Rhode Island, USA. In the first experiment, an average water column oil concentration of 190 ppb was maintained for 168 d followed by a 64 d period of no oil additions. During the second experiment, an average oil concentration of 90 ppb was maintained for 122 d. A 386 d period of no oil additions (Experiment 111) followed Experiment 11. The abundances of metazoan meiofauna decreased during oil addition periods in Experiments I and I1 with the oil more extensively affecting the meiofauna in the first experiment. In both experiments, ostracods and harpacticoid copepods were the most sensitive metazoan groups. In contrast, abundances of protozoan meiofauna (foraminiferans and ciliates) were higher in the oiled mesocosms. Abundances of most meiofaunal groups returned to levels similar to the controls within 2 to 7 mo following the termination of oil additions. However, the abundances of kinorhynchs and halacarids remained depressed for more than 1 yr after the last oil addition, presumably due to residual oil in the sediments.

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Section: Introductionmentioning

confidence: 99%

Responses of benthic meiofauna to long-term, low-level additions of No. 2 fuel oil

Frithsen¹,

Elmgren²,

Rudnick³

1985

Mar. Ecol. Prog. Ser.

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“…Data from the 6-month survey, however, indicated that disturbed treatments were still significantly different from controls. In view of this and the fact that few studies have considered the medium to long-term effects of disturbance on meiobenthos (Pequegnat, 1975), it was decided to extend the test of the above hypothesis to cover a longer period and 24 months was arbitrarily chosen. This provided an opportunity to analyse temporal trajectories of response to disturbance and to test the hypothesis that these would be convergent.…”

Section: Introductionmentioning

confidence: 99%

Persistent effects of physical disturbance on meiobenthos in mangrove sediments

Dye

2006

Marine Environmental Research

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“…Similar short-term recovery rates, following natural defaunation events (such as storms and anoxia), have also been reported (Saloman and Naughton 1977;Simon and Dauer 1977). Meiobenthic assemblages, on the other hand, have been reported to have very low rates (years) of recovery Pequegnat 1975;. For reviews of impacts from beach nourishment, see Naqvi and Pullen (1982) and Nelson and Pullen (1985).…”

Section: B-30mentioning

confidence: 99%