Presentation to Port Adelaide U3A 5 th September 2017 Catherine - - PowerPoint PPT Presentation

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Presentation to Port Adelaide U3A 5 th September 2017 Catherine - - PowerPoint PPT Presentation

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Presentation to Port Adelaide U3A 5 th September 2017 Catherine McMahon, Estuary Care Foundation https://youtu.be/Dn8dZrWK7fM Shellfish Restoration Shellfish reefs, a component of Living Shorelines. Drawing by Peri Coleman How cost effective is

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Presentation to Port Adelaide U3A 5th September 2017 Catherine McMahon, Estuary Care Foundation

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https://youtu.be/Dn8dZrWK7fM

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Shellfish Restoration

Shellfish reefs, a component of Living Shorelines. Drawing by Peri Coleman

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How cost effective is natural infrastructure?

The Nature Conservancy

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International examples

  • Billion Oyster Project, Hudson River

History Ambitious goal Schools Shell Recycling Involving businesses

  • Chesapeake Bay Foundation

Oyster gardening

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Billion Oyster Project

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BOP 2035

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BOP now

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Harbour School – production hub

Image - http://www.billionoysterproject.org/

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Shell Recycling

www.oysterrecovery.org

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Oyster gardening

Oyster basket at Bert Jabin Yacht Yard, Chesapeake Bay

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Australian shellfish reef

Healthy angasi reef in Tasmania

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Australian Restoration Projects

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Sydney Harbour

OceanWatch Australia is helping NSW coastal communities turn

  • ld oyster shell into living

shorelines in an Australian first

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Port Phillip Bay

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South Australia

  • 1500km of SA coast had shellfish reefs
  • 85% loss shellfish reef worldwide; 99% loss

in SA

  • Reefs may enhance coastal protection
  • Restored reefs can enhance fish stocks
  • Ostrea angasi filter 200 litres of water/day
  • Reef off Ardrossan to be largest in southern

hemisphere

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https://youtu.be/nQ6fUolU81s

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https://www.youtube.com/watch?v=UNXWEyygIeo

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Port River Shellfish Restoration Project

First project group meeting, January 2016

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Shellfish in Kaurna life

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Shellfish in Kaurna life

Healing Mural, Port Adelaide Visitors Centre

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Colonial records

Diary Anthony S Fotheringham Sept 1st 1871

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Records from C20th

Beachcombing at the Outer Harbour South Australia Published by SA Museum, 1954 and 1964

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Now: mussels in Inner Harbour

Mussels on New Port Quays marina, November 2015

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Now: pinna from Snowden’s Beach

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Now: shellfish on ASC

  • il spill containment boom

growth on boom, after 15 months in water 18 August 2016

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Now: shellfish on Flinders Ports beacon

Beacon taken our near Birkenhead, photo 31st October, 2016

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Now: pinna and angasi

pinna & angasi retrieved from Taperoo Beach, August/Sept 2016

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Now: pinna reef

pinna reef at Outer Harbour, January 2017

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Now: live Ostrea angasi

Found north of Outer Harbour breakwater, January 2017

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Support: Port River Shellfish Restoration Project

  • Sites
  • Community NRM Grant $5K
  • SEAPA – donated baskets
  • Pacific Estate Oysters –

donated Ostrea angasi

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Grow sites

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Community support

  • Port Adelaide Residents Environment

Protection Group

  • SA Malacological Society
  • SA Marine Life Society
  • Foundation volunteers
  • Portside Christian College & Ocean

View College

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Support: Australia Day Award

Emerging Group award, January 25th, 2017

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Research questions

  • Can Ostrea angasi (approx 60mm)

survive at our trial sites?

  • What spat can be recruited during

the spawning seasons of mussels and Ostrea angasi ?

  • Can Ostrea angasi spat on shell

survive at our trial sites?

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Setting up our baskets

May 2017

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Mark, measure, weigh

Working bee, 31 May 2017

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and photograph

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Outcomes

Growth on oysters at CYC, June 16, 2017, photograph by Dan Monceaux

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Outcomes

Oysters alive and open, dive by Steve Reynolds, CYC 16th June 2017

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Outcomes

Growth on oyster at Flinders Ports, August 30th Only 3 of more than 300 oysters have died across our 6 sites

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What we don’t want growing

Ciona intestinalis Mussel drills Lepsiella paivae Inner Harbour 14th August 2017

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What’s growing on or with our angasi

Mussel on angasi CYC, 19 August 2017 Shrimps with oysters Flinders Ports, 30 August 2017

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What’s growing on or with our angasi

Limpet on angasi Flinders Ports site 30 August 2017 Pygmy squid

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What’s growing on or with our angasi

Inner Harbour, 24 August 2017

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Community Education

World Environment Forum, June 2017

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Community Education

Science Alive, August 2017

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Plans for the future

  • Trials with spat on shell
  • Provide substrate for our reef

builders

  • Reefs in Inner Harbour
  • Shoreline protection e.g. along

Torrens Island, Living Shorelines

  • Healthy, swimmable Port River
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Existing reef builders

Pacific oysters and mussels in Inner Harbour, August 2017

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Swimmable River

Long Swim Through Port Adelaide reinstated, December 2016

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Estuary Care Foundation SA Inc

Catherine McMahon estuarycare@internode.on.net 0413 578086