Archives

Managing for Resilience – Guadeloupe, 2011

Part of the 4th International Tropical Marine Ecosystems Management Symposium (ITMEMS), this learning exchange included 58 individuals. The Reef Resilience Network participated as conference leaders and dedicated a day of the conference to resilience concepts, with trainings.

Share on FacebookTweet about this on TwitterEmail this to someone

Coral Reef Resilience – Florida, 2011

This was the 2nd Reef Resilience Conference: Planning for Resilience, with 242 participants. It included a 2-day workshop, with a presentation of viewpoints of the fishing/diving industry and the International Reef Resilience practitioners workshop.

Share on FacebookTweet about this on TwitterEmail this to someone

Restoration and Reef Resilience: Your Input is Needed

Coral Restoration photo for survey

Photo © Kemit-Amon Lewis

We are happy to announce that new coral restoration information and resources are coming soon to the Reef Resilience online toolkit and we’d like to hear from you! Please take this short survey and let us know what you need to be more effective in your work on coral restoration.

Because your response is important to us, we are giving away 5 copies of the new National Geographic book ‘Pristine Seas: Journey to the Ocean’s Last Wild Places’ by Enric Sala to participants. You will be prompted to enter into this raffle at the end of the survey.

Thank you for participating in our survey! Take the survey.

Share on FacebookTweet about this on TwitterEmail this to someone

An Integrated Coral Reef Ecosystem Model to Support Resource Management under a Changing Climate

Ecosystem-based management is a useful management tool that considers both indirect and cumulative effects of added stressors to a system. Ecosystem models, especially those that consider physical and biological disturbances and human uses, can help to inform ecosystem-based management during planning and implementation stages. This study modified the Atlantis Ecosystem Model to quantify and predict the effect of added stressors on the Guam coral reef ecosystem. Specifically, the study focused on three main stressors: climate change, land-based sources of pollution (LBSP), and fishing. The study used the IPCC Fifth Assessment Report highest emission scenario to predict atmospheric COconcentrations and the RCP8.5 projection to predict sea surface temperatures. LBSP was predicted using previous data collected on Guam’s sediment and nutrient loads and river flow. Fishing predictions were based on historical catches. Short term (i.e. 30 years) and long term (i.e. 65 years) simulation tests were run for each stressor.

The short term tests revealed that fishing resulted in the greatest negative impacts with LBSP following close behind. Climate change became the dominant stressor in longer time scales with the bleaching threshold exceeded every year after year 48. It becomes clear that long-term high intensity disturbances from multiple stressors limits and sometimes even prevents ecosystem recovery. Limiting frequency, intensity, and number of stressors can significantly increase reef resilience. This study revealed that reducing LBSP and increasing water quality can delay climate-related impacts for up to 8 years while buying time for the corals to adapt to higher temperatures. The Atlantis Ecosystem Model and others like it can be used to provide a wealth of knowledge to inform ecosystem-based management decisions on both regional and global levels.

Author: Weijerman M., E.A. Fulton, I.C. Kaplan, R. Gorton, R. Leemans, W.M. Mooij, and R.E. Brainard
Year: 2015
View Full Article

PLoS ONE 10(12). doi: 10.1371/journal.pone.0144165

Share on FacebookTweet about this on TwitterEmail this to someone

New Network Resources: Spotlight on the Western Indian Ocean

Cleaning a coral nursery. © Reef Rescuers

Content Here

Improving Management of Spawning Aggregation Fisheries in the Seychelles Using Acoustic Telemetry

Marine managers in the Seychelles are collecting and using behavioral information on Shoemaker spinefoots to develop management strategies that protect spawning aggregations of these commercially important fish. Read the case study.

Reef Rescuers: Coral Gardening as an MPA Management Tool

To repair coral bleaching damage in a marine reserve in the Seychelles, a large scale reef restoration project uses “coral gardening”, a technique that involves collecting small pieces of healthy coral, growing them in underwater nurseries, and then transplanting them to degraded sites. Read the case studyWatch the webinar.

Preparing for Coral Bleaching in the Western Indian Ocean

David Obura of CORDIO East Africa presents updated guidance (in four basic steps!) for monitoring bleaching events in the Western Indian Ocean at basic, intermediate, and expert levels. Watch the webinar.

Share on FacebookTweet about this on TwitterEmail this to someone

Seychelles – Coral Restoration


Reef Rescuers: Coral Gardening as an MPA Management Tool

Location
Cousin Island Special Reserve, Seychelles

A coral transplantation site at Cousin Island Special Reserve. © Reef Rescuers

A coral transplantation site at Cousin Island Special Reserve. © Reef Rescuers

The Challenge
In 1998, the mass coral bleaching event, caused by the coupling of El Nino and the Indian Ocean Dipole, severely affected the reefs of the Seychelles Archipelago. The 1998 bleaching catastrophe decreased live coral cover by up to 97% in some areas and caused many reefs around the islands to collapse into rubble (which later became covered with algae). In the following decades, coral recovery has been extremely slow in the inner granitic islands of Seychelles. Despite the existence of numerous no-take Marine Protected Areas (MPA) – an effective tool to bolster coral reef recovery – it has taken almost 20 years to see coral cover at pre-1998 levels in most areas in the region. Due to continuous global threats, such as changes in climate and ocean chemistry, MPAs alone may not be enough to assist in the recovery of coral reefs in the Seychelles. Consequently, more active conservation strategies are needed to promote reef recovery and build reef resilience and to achieve the long-term conservation of coral reef ecosystem services.

Cleaning the coral nursery. © Reef Rescuers

Cleaning the coral nursery. © Reef Rescuers

Actions Taken
The slow post-bleaching recovery motivated active restoration efforts in the inner islands of the Seychelles archipelago to assist in natural recovery. In 2010, Nature Seychelles launched the Reef Rescuers Project on Praslin Island. Financially supported by the United States Agency for International Development (USAID) and the Global Environment Facility (GEF) through the United Nations Development Program (UNDP), this climate adaptation coral restoration project seeks to repair coral bleaching damage in selected sites around Praslin and Cousin Island Special Reserve, a no-take marine reserve.

Through this project we are piloting the first-ever large scale active reef restoration project in the region using ‘coral gardening,’ a technique that involves collecting small pieces of healthy coral, raising them in underwater nurseries and then transplanting them to degraded sites that have been affected by coral bleaching. Forty thousand fragments of coral from 10 different branching/tabular species (Acropora hyacinthus, A. cytherea, A. abrotanoides, A. appressa, Pocillopora damicornis, P. grandis – senior synonym of P. eydouxi, P. meandrina, P. verrucosa, Stylophora pistillata, S. subseriata; species identification after Veron 2000 and nomenclature after the World Register of Marine Species) have been raised in 13 underwater nurseries located inside the Cousin Island Special Reserve. Between November 2011 and June 2014, a total of 24,431 nursery-grown coral colonies were transplanted to 5,225 m2 (0.52 ha) of degraded reef within the Cousin Island Special Reserve.

Coral colonies self-attaching. © Reef Rescuers

Coral colonies self-attaching. © Reef Rescuers

With the onset of a weak-to-moderately strong El Niño-Southern Oscillation (ENSO) event starting late summer to early fall 2014 and continuing through 2016, we had a unique opportunity to determine the effectiveness of the choice of coral reef species (initially chosen based on survival rates during the last seawater warming anomaly) and the restoration process itself in alleviating the impact of warmer ocean temperatures. We are using standardized protocols to monitor the survival, reproduction, recruitment and bleaching response of donor and transplanted colonies. We continue monitoring at the transplantation site and two control sites, representing a healthy and degraded coral reef. Such monitoring allows us to evaluate the effectiveness of the restoration effort. Additionally, we are assessing the costs of large-scale reef restoration via coral gardening and the life cycle of coral reef restoration technology.

Transporting coral fragments. © Reef Rescuers

Transporting coral fragments. © Reef Rescuers

How successful has it been?
The long-term “success” of this mass transplantation is still being monitored but the project has already had positive outcomes. Forty-one practitioners from 11 countries have been exposed to reef restoration techniques by “on the job” work as volunteers up to three months on site, and eight experts have to date been formally trained through a full-time six-week classroom and field based training program. Before-and-after comparisons in coral cover at the transplanted site showed that the restoration project resulted in a 700% increase in coral cover, from about 2% in 2012 to 16% by the end of 2014. Similarly, we have documented a five-fold increase in fish species richness, a three-fold increase in fish density, and a two-fold increase in coral settlement and recruitment at the transplanted site. We also found that our coral transplants responded better to stressful conditions resulting from increased sea temperatures and a harmful algal bloom. The transplanted corals appear to recover faster and better than corals at other sites. The response of the transplanted reef to thermal stress bleaching is still being monitored. The preliminary analysis of the costs of reef restoration via coral gardening and the life cycle of coral reef restoration technology together with the ecological results so far support the application of large-scale, science-based coral reef restoration projects with long timescales to assist the recovery of damaged reefs. A proposal to scale up the coral farms to a mariculture venture so as to reduce costs through economies of scale has been accepted by the Seychelles government and funding is currently being sought.

Lessons Learned and Recommendations
A tool kit is currently being put together to highlight the lessons learned from the project. In summary, we have learned that:

  • Survival of coral donor colonies is high.
  • Survival of nursery colonies is high for the selected species listed above.
  • There is a natural supply of corals (corals of opportunity) to be grown in the nurseries and that eliminate the need to re-fragment nursery-grown or donor colonies.
  • Nurseries become floating reef ecosystems.
  • Natural cleaning of coral nurseries and coral ropes reduces nursery maintenance and increases transplantation success.
  • There is a positive transplantation effect on settlement and recruitment of new corals, fish diversity and density.
  • The response of transplanted corals to bleaching causative events needs close monitoring to assess the effects of coral gardening on building bleaching resistance.
  • There is citizen science interest internationally in receiving training on coral reef restoration.
  • Partnerships with the tourism sector can be developed to establish coral gardens (seascaping) as a guest attraction and as a key part of the industry’s environmental management programs and Corporate Social Responsibility (CSR).
  • Large-scale coral reef restoration needs to be considered as a cost-effective tool to include in the MPA manager’s toolbox.

Funding Summary
Until 2015, funds to support the Reef Rescuers Project have been sourced and provided by USAID. Further financial support was received under the Government of Seychelles-Global Environment Facility (GEF)-United Nations Development Project (UNDP) Protected Area Project in 2011.

Lead Organizations
Nature Seychelles

Partners
Global Environment Facilitaty (GEF)
USAID

Resources
About the Reef Rescuers project

Transplanted corals attach themselves in pioneering reef restoration project in the Seychelles

Reef Rescuers on CNN Inside Africa

US Oceans Envoy praises Nature Seychelles’ work

Saving the giant clams

Share on FacebookTweet about this on TwitterEmail this to someone