The University of Southampton
University of Southampton Institutional Repository

The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica

The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica
The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica
Ice scouring is a key structuring force acting on high latitude shallow benthic communities. Despite its importance, detailed studies of scoured communities are still rare. Here we report the ecological effects of 12 iceberg impacts, across three contrasting study sites, at Adelaide Island, West Antarctic Peninsula. Grounded icebergs were marked with GPS and the newly formed scours (at 10–17 m depth) were sampled within 20 days of formation. Comparisons between scoured and adjacent unscoured assemblages were made using measures of abundance, biomass, taxon richness and the relative abundance of secondary consumers. Ice scouring was catastrophic at all sites, despite differences in substratum type, exposure and background community. Compared with undisturbed areas, scour assemblages were 95% lower in mean macrofaunal abundance and 75.9% lower in species richness. There was no general trend across all sites of ice scouring selecting for secondary consumers. The echinoid Sterechinus neumayeri and bivalve mollusc Mysella charcoti were highly abundant in undisturbed areas and were the biggest contributors to the observed differences between scours and undisturbed areas.
antarctica, benthos, community, disturbacne, ice scour
1442-9985
878-888
Smale, Dan A.
19528a3a-f66c-474d-ae13-c6405b8014ab
Barnes, David K.A.
f53924ec-169f-4620-9e9b-c51a405bf6ca
Fraser, Keiron P.P.
7f42cac7-8764-4f94-a80c-cd93ad2649fc
Smale, Dan A.
19528a3a-f66c-474d-ae13-c6405b8014ab
Barnes, David K.A.
f53924ec-169f-4620-9e9b-c51a405bf6ca
Fraser, Keiron P.P.
7f42cac7-8764-4f94-a80c-cd93ad2649fc

Smale, Dan A., Barnes, David K.A. and Fraser, Keiron P.P. (2007) The influence of ice scour on benthic communities at three contrasting sites at Adelaide Island, Antarctica Austral Ecology, 32, (8), pp. 878-888. (doi:10.1111/j.1442-9993.2007.01776.x).

Record type: Article

Abstract

Ice scouring is a key structuring force acting on high latitude shallow benthic communities. Despite its importance, detailed studies of scoured communities are still rare. Here we report the ecological effects of 12 iceberg impacts, across three contrasting study sites, at Adelaide Island, West Antarctic Peninsula. Grounded icebergs were marked with GPS and the newly formed scours (at 10–17 m depth) were sampled within 20 days of formation. Comparisons between scoured and adjacent unscoured assemblages were made using measures of abundance, biomass, taxon richness and the relative abundance of secondary consumers. Ice scouring was catastrophic at all sites, despite differences in substratum type, exposure and background community. Compared with undisturbed areas, scour assemblages were 95% lower in mean macrofaunal abundance and 75.9% lower in species richness. There was no general trend across all sites of ice scouring selecting for secondary consumers. The echinoid Sterechinus neumayeri and bivalve mollusc Mysella charcoti were highly abundant in undisturbed areas and were the biggest contributors to the observed differences between scours and undisturbed areas.

Full text not available from this repository.

More information

e-pub ahead of print date: 6 November 2007
Published date: December 2007
Keywords: antarctica, benthos, community, disturbacne, ice scour
Organisations: Ocean Biochemistry & Ecosystems

Identifiers

Local EPrints ID: 348330
URI: http://eprints.soton.ac.uk/id/eprint/348330
ISSN: 1442-9985
PURE UUID: c1a0988b-3a03-4ca8-bf21-c186fec0eec2

Catalogue record

Date deposited: 12 Feb 2013 12:02
Last modified: 18 Jul 2017 04:52

Export record

Altmetrics

Contributors

Author: Dan A. Smale
Author: David K.A. Barnes
Author: Keiron P.P. Fraser

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×