sgflfearthcare

Seagrass Beds and Fauna of St Kilda Harbour

September 2000

Appendix 3

Flora and Fauna Data Collected by Earthcare St Kilda

Dive Site

2. Seagrass (Kiosk)

Type	Phylum	Latin name	Common Name	Date
Fauna	Mollusca	Ostrea angasi	Mud oyster, flat oyster
		Anadaria trapezia	Sydney Cockle
		Austrocochlea odontis	Top shell
		Eumarcia fumigata	Venus shell
		Mylitus edulis	Blue Mussel
		Electroma georgiana	-
	Echinodermata	Asterias amurensis	Pacific Seastar?
	Chordata	Pyura spinifera	-
	Annelida	Sabellidae spallanzanii	Sabellid worm
		Galeolaria caespitosa	Sydney coral
	Arthropoda	Palaemon serenus	Rock pool shrimp
Flora	Rodophyta (red algae)	?	Red algae
	Chlorophyta (green)	Fam. Ulvacea (laeterirens?)	Sea lettuce

Dive Site 3

Pier

Type	Phylum	Latin name	Common Name	Date
Fauna	Mollusca	Neodoris chrysoderma	Nudibranch
		Ostrea angasi	Mud oyster, flat oyster
		Mytilus edulis	Blue mussel
	Annelida	Spirographis spallanzani	Sabellid worm
	Echinodermata	Patiriella sp.	Comon seastar
	Arthropoda	Pinnotheres hickmani	pea crab
	Chordata	Pyura stolonifera	-
Flora	Rodophyta (red algae)	?	Red algae
	Chlorophyta (green)	Fam. Ulvacea (laetevirens?)	Sea lettuce

West of Dive Site 2

Outside Breakwater

Type	Phylum	Latin name	Common Name	Date
Fauna	Mollusca	?	Orange nudibranch
		Thais orbita	?
		Haliotis rubra	Blacklip abalone
		Electroma georgiana	-
		Ostrea angasi	Mud oyster, flat oyster
		Mytilus edulis	Blue Mussel
	Annelida	Spirographis spallanzani	Sabellid worm
	Echinodermata	Patiriella sp.	Common seastar
		Coscinasterias muricata	?
		Asterias amurensis	Pacific Seastar?
	Arthropoda	Pinnotheres hickmani	pea crab
	Chordata	Pyura stolonifera	-
		Polycarpa clavata	-
	Porifera	?	Yellow sponge
Flora	Rodophyta (red algae)	?	Red algae
	Chlorophyta (green)	Ulvacea sp. (laeterirens?)	Sea lettuce
		Caulerpa sp.	Green algae
	Phaeophyta (brown)	?	Brown algae
		Sargassum sp.	-
		Dictyota dichotoma	--

Site 2

and North West Inside Breakwater

Type	Phylum	Latin name	Common Name	Date
Fauna	Mollusca	?	Yellow donid? nudibranch
		Electroma georgiana	-
		Ostrea angasi	Mud oyster, flat oyster
		Mylitus edulis	Blue Mussel
	Echinodermata	Asterias amurensis	Pacific Seastar
	Arthropoda	Pinnotheres hickmani	pea crab
		Macrobrachium sp.	Paloemonid shrimp sp
	Chordata	Pyura stolonifera	-
	Porifera	?	Yellow sponge
		?	Sponge
		?	Yellow encrusting sponge
Flora	Rodophyta (red algae)	Gracilaria secundata	Red algae
	Chlorophyta (green)	Ulvacea sp. (laebevinens?)	Sea lettuce
		Caulerpa sp.	Green algae
	Phaeophyta (brown)	Dictyota dichotoma	-
		Sargassum sp.	-

Site 2

Pylons: Boat Pen Pier

Type	Phylum	Latin name	Common Name	Date
Fauna	Mollusca	Turbo undulatus	Warrener	21.12.99
		Polinices conicus	Moon shell, Sand snail	21.12.99
		Comminella lineolata	False whelk	21.12.99
		Nassaridae sp.	Dogwhelk	21.12.99
		Pectinidae sp.	Scallop	21.12.99
		Haliotidae sp.	Abalone	21.12.99
		Electroma georgiana	-	21.12.99
		Austrocochlea odontis	Top shell	21.12.99
		Eumarcia fumigata	Venus shell	21.12.99
		Nuculana crassa	Beaked nut shell	21.12.99
	Porifera	?	Orange sponge	21.12.99
		Dendrilla rosea	Pink sponge	12.1.00
		Aplysina lendenfeldi	Cigar-shaped, brown sponge
	Echinodermata	Patiriella sp.	Common seastar	21.12.99
	Chordata	Sparidae sp.	Bream sp.
		Dasyatididae sp.	Stingray
		Tetractenos glaber?	Smooth Toadfish?	13.1.00
		Hippocampus sp.	Big-bellied seahorse?	13.1.00
	Annelida	Galeolaria caespitosa	Sydney coral	21.12.99
		Spirographis spallanzani	Sabellid worm	21.12.99
	?	?	Sea squirts?	21.12.99
Flora	Rodophyta (red algae)
	Phaeophyta (brown algae)	Sargassum sp.		21.12.99
		Dictyota dichotoma	Brown algae sp.	13.1.00
	Chlorophyta (green)	Codium fragile	Codiaceae sp.	21.12.99
		Ulva Lactuca	Sea lettuce	21.12.99

Appendix 4 Heavy Metal Analysis.

Tributyltin in estuarine and coastal waters

The guideline concentration for TBT in marine waters is 2 ng L-1. Prior to banning, measurements had been obtained for water samples from a number of sites in NSW and other states (Table 5). Particularly near dockyards or other areas of high shipping densities, concentrations of TBT in excess of 100 ng Sn L-1 were found. In waterways inaccessible to large vessels, concentrations ranged from 10-100 ng Sn L-1. Following banning, concentrations were in most instances near or below the guideline value.
Tributyltin in sediments

Tributyltin in sediments

As with heavy metals, the greatest concentrations of TBT are found in sediments. Data have been obtained for sites in Vic., Qld, SA, WA and NSW for their respective environmental authorities, and the results have been similar for each location (Batley & Scammell 1991; Witney 1991; EPAWA 1990).

Typically concentrations in sediments are low and are of minor environmental concern. In the vicinity of marinas, however, sediment concentrations can exceed 1 µg Sn g-1 or higher, the latter usually the result of paint flakes hydroblasted from boat hulls (Batley & Scammell 1991). Surveys of estuaries around Sydney have shown that, following banning, TBT concentrations are now lower in the upper 1-3 cm of sediment, depending on sedimentation rate. A maximum concentration appears below this depth, diminishing in deeper sediments consistent with its successive degradation to dibutyltin, monobutyltin and inorganic tin.

Reference

PollutionTechnical Annex: 2
State of the Marine Environment Report for Australia
Heavy metals and tributyltin in Australian coastal and estuarine waters
G.E. Batley
CSIRO Centre for Advanced Analytical Chemistry
Menai, NSW 2234

Earthcare St Kilda Ph: 0500 832 784

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