Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms

Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms

16 pages, 5 figures, 4 tables, 1 appendix

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Bibliographic Details
Main Authors: Teixidó, Nuria, Garrabou, Joaquim, Gutt, Julian, Arntz, Wolf E.
Format: artículo biblioteca
Published: Inter Research 2004-09-07
Subjects:Antarctica, Benthic communities, Disturbance, Growth forms, Life-history traits, Recovery, Underwater photography, GIS,
Online Access:http://hdl.handle.net/10261/134996
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spelling dig-icm-es-10261-1349962020-12-10T11:53:57Z Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms Teixidó, Nuria Garrabou, Joaquim Gutt, Julian Arntz, Wolf E. Antarctica Benthic communities Disturbance Growth forms Life-history traits Recovery Underwater photography GIS 16 pages, 5 figures, 4 tables, 1 appendix The response of an Antarctic benthic community to iceberg disturbance was investigated using underwater photographs (1 m2 each) on the SE Weddell Sea shelf. This study: (1) characterises composition, coverage, number of patches and area of sessile benthic fauna, (2) describes faunal heterogeneity using MDS ordination and identifies 'structural taxa' of each recovery stage, and (3) analyses changes of growth-form patterns during Antarctic recovery. We observed changes in the space occupation of benthic organisms along the recolonisation stages. Uncovered sediment characterised the early stages ranging from 98 to 91 % of the coverage. The later stages showed high (70.5%) and intermediate (52.5%) values of benthic coverage, where demosponges, bryozoans and ascidians exhibited a high number of patches and taxa. Several 'structural species' were identified among the stages, and information is provided on their coverage, number of patches and area. Overall, maximum areas of patches increased as recovery proceeded. Early stages were characterised by the presence of pioneer taxa, which only partly covered the bottom sediment but were locally abundant (e.g. the bryozoan Cellarinella spp. and the gorgonian Primnosis antarctica with a maximum coverage of 13 and 3%, and 51 and 30 patches m -2, respectively). Soft bush-like bryozoans, sheet-like sabellid polychaetes, and tree-like sponges, gorgonians, bryozoans and ascidians were the first colonisers. Mound-like sponges and ascidians as well as tree-like organisms with a long lifespan and different reproductive strategies defined the late stages. We conclude by comparing the selected 'structural species' and relating their life-history traits to differences in distribution in the course of Antarctic recovery N.T. was funded by a Bremen University fellowship. Peer Reviewed 2016-07-22T11:58:23Z 2016-07-22T11:58:23Z 2004-09-07 2016-07-22T11:58:24Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.3354/meps278001 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 278: 1-16 (2004) http://hdl.handle.net/10261/134996 10.3354/meps278001 https://doi.org/10.3354/meps278001 Sí open Inter Research
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Antarctica
Benthic communities
Disturbance
Growth forms
Life-history traits
Recovery
Underwater photography
GIS
Antarctica
Benthic communities
Disturbance
Growth forms
Life-history traits
Recovery
Underwater photography
GIS
spellingShingle Antarctica
Benthic communities
Disturbance
Growth forms
Life-history traits
Recovery
Underwater photography
GIS
Antarctica
Benthic communities
Disturbance
Growth forms
Life-history traits
Recovery
Underwater photography
GIS
Teixidó, Nuria
Garrabou, Joaquim
Gutt, Julian
Arntz, Wolf E.
Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
description 16 pages, 5 figures, 4 tables, 1 appendix
format artículo
topic_facet Antarctica
Benthic communities
Disturbance
Growth forms
Life-history traits
Recovery
Underwater photography
GIS
author Teixidó, Nuria
Garrabou, Joaquim
Gutt, Julian
Arntz, Wolf E.
author_facet Teixidó, Nuria
Garrabou, Joaquim
Gutt, Julian
Arntz, Wolf E.
author_sort Teixidó, Nuria
title Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
title_short Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
title_full Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
title_fullStr Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
title_full_unstemmed Recovery in Antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
title_sort recovery in antarctic benthos after iceberg disturbance: trends in benthic composition, abundance and growth forms
publisher Inter Research
publishDate 2004-09-07
url http://hdl.handle.net/10261/134996
work_keys_str_mv AT teixidonuria recoveryinantarcticbenthosaftericebergdisturbancetrendsinbenthiccompositionabundanceandgrowthforms
AT garraboujoaquim recoveryinantarcticbenthosaftericebergdisturbancetrendsinbenthiccompositionabundanceandgrowthforms
AT guttjulian recoveryinantarcticbenthosaftericebergdisturbancetrendsinbenthiccompositionabundanceandgrowthforms
AT arntzwolfe recoveryinantarcticbenthosaftericebergdisturbancetrendsinbenthiccompositionabundanceandgrowthforms
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