The Restore Ubin Mangroves (R.U.M.) Initiative is for all those who care about restoring mangroves to the abandoned aquaculture areas at Pulau Ubin. The Initiative brings together the community of experts from tertiary institutions, NGOs, commercial enterprises that depend on Ubin mangroves, and individual enthusiasts, with the support of NParks and the corporate sector. More about the members of R.U.M.
A clip about R.U.M. thanks to Nor Lastrina Hamid.
8 Oct 2016: Free Pulau Ubin Mangrove Walk by Restore Ubin Mangroves (R.U.M) Initiative from Rina Lim Zui Hou on Vimeo.
How does R.U.M hope to restore the mangroves at abandoned aquaculture areas at Pulau Ubin?
We hope to let Mother Nature do the planting!
Mangroves are like Goldilocks and the three bears. Mangrove seeds and seedlings will settle and grow naturally (establish) if the shore is suitable for them. This means, for example, that the shore should not be too high or too low (elevation), the water flows not too fast or too slow (hydrology). In conditions that are 'just nice' for them, mangroves will flourish.
This is why attempts to plant mangroves without considering elevation and hydrology often fail. Wasting time, effort and money. Because the seedlings are often planted in the wrong place: unsuitable elevation or hydrology. Sometimes, the wrong kind of mangroves are planted: not suited to the site. Until we fix the ground conditions, planting will continue to fail.
What is Ecological Mangrove Restoration (EMR)?
We will have a better chance of success if our restoration works with, not against, Mother Nature.
By re-creating 'just nice' ecological conditions for mangroves to flourish, Ecological Mangrove Restoration aims to give Mother Nature a hand. Thus allowing mangroves to naturally establish in abandoned aquaculture ponds.
This involves a thorough study of the ground situation. The resulting data allowing us to determine the minimal adjustments needed to allow rapid establishment of natural mangroves. For example, breaking down just a few bunds (mud walls), or raising a few parts of the shore and lowering others.
|Mangrove saplings flourish where conditions are 'just nice'.|
Why is Ecological Mangrove Restoration better than planting mangroves?
Creating conditions for mangroves to naturally establish is much better than planting mangroves because Mother Nature plants mangroves in the right mix of species. The resulting mangrove forest will be diverse, instead of one or a few species (monoculture) in typical planted mangroves. A diverse natural mangrove forest tends to provides a nursery, food, shelter for a wider range of wildlife, be more resilient to disease, and better at providing good water quality and other important ecosystem services.
How is Ecological Mangrove Restoration done?
Ecological Mangrove Restoration is somewhat like doing surgery to restore someone's health. Before we do the surgery, we need to do an MRI or X-ray or other scans and checks. Only then will we know how to do the surgery with minimal harm to the person, and maximise the chances of full recovery.
The steps in Ecological Mangrove Restoration are similar:
Step 1: Understand the ecology of natural mangroves at the site. Where are they settling and growing well (establishment)? How are they doing: producing seedlings? This tells us what conditions are ideal for mangroves to establish naturally at the target site.
Step 2: Understand the water flows (hydrology) that controls the distribution and establishment of mangrove seedlings.
Step 3: Assess the barriers to natural establishment. These could be water flows (hydrology), or the shore is too low or too high (elevation).
Step 4: Select the appropriate site to restore through Steps 1 to 3.
Step 5: Recreate the appropriate hydrology by dealing with the barriers to natural establishment.
Step 6: Plant seedlings if establishment is too slow or a higher tree density is desired.
Has Ecological Mangrove Restoration been tried before? And was it successful?
Ecological Mangrove Restoration has been often practiced in the US to create numerous restored mangrove sites in a cost-effective and ecological manner.
The Mangrove Action Project also applied Ecological Mangrove Restoration in Indonesia. Here is a series of photos of Ecological Mangrove Restoration in action in Tiwoho, Sulawesi from 2001 to 2011.
|EMR in action in Tiwoho, Sulawesi from 2001 to 2011|
(EMR took place in 2005).
Source: Mangrove Action Project Indonesia, 2013
In a collaboration with Mangrove Action Project and a local university, Dr Dan Friess and his team was involved in applying Ecological Mangrove Restoration to restore a site in Makassar, Sulawesi, Indonesia. The site comprised 29 abandoned aquaculture ponds which faced a lot of erosion problems. A pre-survey was done in Sep 2013, restoration works carried out in Dec 2013, and a post-survey in Jun 2014. Six months after restoration works, seedling establishment was already happening.
I want to know MORE about Ecological Mangrove Restoration!
Here you go! Downloads from Mangrove Restoration.com
How will Ecological Mangrove Restoration be conducted in Pulau Ubin?
Phase I involves collection of essential baseline data on the physical environment. This will show where Ecological Mangrove Restoration is likely to be successful, and what locations need to be modified in order to increase restoration success. Key activities include:
- Conduct baseline elevation surveys of abandoned ponds to understand their physical and hydrological condition.
- Conduct baseline elevation surveys of neighbouring natural mangrove forests, to understand species-specific requirements for restoration.
- Conduct baseline fish and bird surveys to understand the biodiversity of the proposed areas.
- Mangroves will likely establish and grow
- Modification of the physical environment is required (e.g sediment enrichment to raise surface elevations, earthworks to lower elevations)
- Drainage channels are required
What else will be considered in mangrove restoration on Ubin?
It is important to R.U.M. that the community who live on Ubin and who love Ubin have a part to play in mangrove restoration.
Our hope is to restore Ubin mangroves not just ecologically and biologically, but also their social and cultural role and value to the community on Ubin and beyond.
Therefore, R.U.M. will be doing outreach to Ubin villagers, to update them on our activities and learn from them their memories about Ubin mangroves. We will also be sharing with the general public through monthly R.U.M. walks, as well as public talks and exhibitions.
Can ordinary people help out in the restoration effort?
YES! R.UM. welcomes everyone who cares about mangroves to help in our activities. More details here.
How can I find out what R.U.M. activities are happening and how do I sign up for them?
Upcoming activities will be posted on this blog and on the R.U.M. facebook group. These will include sign up processes. Subscribe to the blog and join the R.U.M. facebook group to get the latest updates.
I have more questions!
Contact us and we will try our best to answer them.