Project Description
Ziggy Marzinelli shares the world of underwater kelp forest recovery. A 70km aquatic restoration project was designed to reinstate Sydney’s Phyllospora comosa – Crayweed forests, a valuable recreational fishing asset as well as a key component of the kelp forest underwater ecosystem. Ziggy’s project successfully reintroduced the missing ecosystem component. In doing so he reinstated a self sustaining recovery trajectory for the Crayweed, which was locally lost in the 1980’s due to poor water quality. This video details the experimental design and highlights the community engagement strategy that delivered positive underwater outcomes.
| Topic | Mins: seconds |
|---|---|
| Titles | 00:00 |
| Introduction to project, value | 00:12 |
| Location of kelp forests | 00:55 |
| Benefits of kelp including economic | 01:20 |
| Impacts/threats | 02:25 |
| Can we restore it? | 03:00 |
| Phyllospora ‘Cray-weed’ case study | 03:30 |
| Threats/stressors- recovery state | 04:00 |
| Should we restore it? | 05:20 |
| Habitat equivalents/requirements | 05:45 |
| Comparison of different ecosystems- Are they the same | 06:20 |
| Replanting –ecological experiment, reference sites and recruitment- Hypothesis | 07:35 |
| System recovery trajectory | 08:30 |
| Restoration treatments/controls/experimental design comparison to reference ecosystem | 08:40 |
| Target areas, reference sites- area, density | 09:40 |
| Survival data | 10:10 |
| Recruitment | 10:23 |
| Reproductive strategy | 10:44 |
| Recruitment data- restored v’s reference sites | 11:13 |
| Malabar Bay case study- recruitment data | 11:44 |
| Little Bay Case study- experiment design | 13:00 |
| Ecosystem complexity- Aims, elements, reference ecosystems, restored sites, controls, goals | 13:50 |
| Epifauna- community structure | 15:10 |
| Restoration goals evaluation | 16:02 |
| Evaluate findings: Patch size, best recruitment, expansion, effects of herbivores, substratum complexity | 16:15 |
| Conclusions/summary | 17:00 |
| Restoration at scale is plausible | 18:00 |
| Agents of degradation and scale of recovery relationship | 18:20 |
| Community engagement: social media, crowdsourcing underwater xmas tree for xmas | 18:40 |
| Stakeholders- government authorities, management plans | 19:15 |
| Community engagement, volunteers | 19:48 |
| Credits | 20:14 |
| End | 20:34 |
Read More – Links
- Restoring Sydney’s underwater forests: Crayweed transplant success
- Operation Crayweed- Restoring Sydney’s Underwater Forests
Learning Resources
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