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Authors Bryars, S; Wear, R
Author Full Name Bryars, Simon; Wear, Rachel
Title INVESTIGATOR GROUP EXPEDITION 2006: SEAGRASSES OF THE INVESTIGATOR GROUP REGION: POSIDONIA MEADOW CONDITION IN A PRISTINE OFFSHORE MARINE ENVIRONMENT
Source TRANSACTIONS OF THE ROYAL SOCIETY OF SOUTH AUSTRALIA
Language English
Document Type Article
Author Keywords Epiphytes; gastropods; flowering
Keywords Plus SOUTH-AUSTRALIA; WESTERN-AUSTRALIA; SINUOSA; ECOLOGY; GRAZERS
Abstract As part of the 'Investigator Expedition', a subtidal survey of seagrasses was conducted in the Investigator Group region of South Australia (S.A.) during May 2006. Seagrasses were collected and identified from Pearson, Flinders, and Topgallant Islands, and from Waterloo Bay on the adjacent mainland. Twelve species of seagrasses have now been documented in the region (including Ward I.), with six species of Posidonia, two species of Amphibolis, two species of Heterozostera, and Halophila australis. The previously undescribed seagrasses of Flinders I. were found to be particularly diverse and widespread. Measures of Posidonia angustifolia/sinuosa condition were taken at 7 in depth from eight sites across four locations (Pearson I., northern Flinders I., eastern Flinders I., Waterloo Bay). A comparison of P. angustifolia/sinuosa condition at these sites with other studies in S.A. indicates that the Investigator Group sites are healthy, and that it P. angustifolia/sinuosa meadow can be suspected of being unhealthy or degraded if aboveground biomass is <100 g DW.m(-2), leaf density is <1000 m(-2), average leaf length is <200 mm, and/or epiphyte load is >1 g DW epiphytes.g DW seagrass(-1). Five species of gastropod were found associated with P. angustifolia/sinuosa across the eight sites. Whilst epiphyte biomass/load was relatively low in the region, a significant positive relationship existed between epiphyte biomass and gastropod density. Flowering in P. angustifolia/sinuosa was noted at some of the sites, particularly on Flinders I.
Author Address [Bryars, Simon; Wear, Rachel] S Australian Res & Dev Inst Aquat Sci, Henley Beach, SA 5022, Australia
Reprint Address Bryars, S (corresponding author), Dept Environm & Heritage, GPO Box 1047, Adelaide, SA 5001, Australia.
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher ROYAL SOC SOUTH AUSTRALIA INC
Publisher City ADELAIDE
Publisher Address SOUTH AUSTRALIAN MUSEUM, NORTH TERRACE C/O HONORARY TREASURER, ADELAIDE, 5000, AUSTRALIA
ISSN 0372-1426
29-Character Source Abbreviation T ROY SOC SOUTH AUST
ISO Source Abbreviation Trans. R. Soc. S. Aust.
Publication Date NOV 30
Year Published 2008
Volume 132
Part Number 2
Beginning Page 81
Ending Page 94
Digital Object Identifier (DOI) 10.1080/03721426.2008.10887096
Page Count 14
Web of Science Category Multidisciplinary Sciences
Subject Category Science & Technology - Other Topics
Document Delivery Number 377CO
Unique Article Identifier WOS:000261229500005
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