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Negative effects of sediment deposition on grazing activity and survival of the limpet Patella vulgata

Negative effects of sediment deposition on grazing activity and survival of the limpet Patella vulgata
Negative effects of sediment deposition on grazing activity and survival of the limpet Patella vulgata
Sediments are likely to influence the distribution of limpets and dominant sessile species
on intertidal rocky shores by smothering and interfering with feeding activity. This hypothesis
was tested by field observations and laboratory experiments in which the effects of different amounts
and grain sizes of sediments on the grazing and survival of the limpet Patella vulgata L. were measured.
On rocky shores close to Plymouth (south-west UK), natural patchiness of sediment deposits
was related to the distribution of P. vulgata and macroalgae. Sediments severely impaired P. vulgata.
Even a ~1 mm thick layer of sediment (equivalent to 50 mg cm–2) decreased grazing activity by 35%,
with total inhibition and mortality at loads of 200 mg cm–2 of fine sediments. Coarse sediments had
less severe effects than fine sediments.
Sedimentation, Grazing, Patella vulgata, Grain size, Rocky shores
235-240
Airoldi, Laura
fca75828-1c89-4e78-838f-ea6e952dff5e
Hawkins, Stephen J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Airoldi, Laura
fca75828-1c89-4e78-838f-ea6e952dff5e
Hawkins, Stephen J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa

Airoldi, Laura and Hawkins, Stephen J. (2007) Negative effects of sediment deposition on grazing activity and survival of the limpet Patella vulgata. Marine Ecology Progress Series, 332, 235-240. (doi:10.3354/meps).

Record type: Article

Abstract

Sediments are likely to influence the distribution of limpets and dominant sessile species
on intertidal rocky shores by smothering and interfering with feeding activity. This hypothesis
was tested by field observations and laboratory experiments in which the effects of different amounts
and grain sizes of sediments on the grazing and survival of the limpet Patella vulgata L. were measured.
On rocky shores close to Plymouth (south-west UK), natural patchiness of sediment deposits
was related to the distribution of P. vulgata and macroalgae. Sediments severely impaired P. vulgata.
Even a ~1 mm thick layer of sediment (equivalent to 50 mg cm–2) decreased grazing activity by 35%,
with total inhibition and mortality at loads of 200 mg cm–2 of fine sediments. Coarse sediments had
less severe effects than fine sediments.

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Airoldi_Hawkins_2007_MEPS.pdf - Version of Record
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More information

Published date: 5 March 2007
Keywords: Sedimentation, Grazing, Patella vulgata, Grain size, Rocky shores
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 188125
URI: https://eprints.soton.ac.uk/id/eprint/188125
PURE UUID: 48c0fec6-ab38-4957-b878-50d3ebf1a388

Catalogue record

Date deposited: 20 May 2011 10:56
Last modified: 05 Oct 2018 12:12

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