Study

Mangrove rehabilitation along urban coastlines: a Singapore case study

  • Published source details Friess D.A. (2017) Mangrove rehabilitation along urban coastlines: a Singapore case study. Regional Studies in Marine Science, 16, 279-289

Actions

This study is summarised as evidence for the following.

Action Category

Restore/create brackish/saline marshes or swamps (multiple actions)

Action Link
Marsh and Swamp Conservation
  1. Restore/create brackish/saline marshes or swamps (multiple actions)

    A site comparison study involving one mangrove creation site in Singapore (Friess 2017) reported that the average height of surviving trees increased over five years, but that above-ground biomass remained lower than in nearby natural mangrove forests after ≥15 years. Statistical significance was not assessed. After five years, surviving trees were 1.5–2.0 m tall (vs <0.45 m tall when sown or planted). After ≥15 years, the above-ground biomass in the created mangrove (36 t C/ha) was lower than in mature natural mangroves in the rest of Singapore (105–227 t C/ha). Methods: In 1996, a mangrove creation project was established on Pulau Semakau Island. Creation involved depositing ash and other waste materials between granite bunds, adding a 0.5–1.0 m thick layer of mangrove mud, planting propagules, planting nursery-reared seedlings, exposing acid soil to seawater to raise its pH, and removing barnacles and seaweed growing on seedlings. Both loop-root mangrove Rhizophora mucronata and tall-stilt mangrove Rhizophora apiculata were planted, at the elevations they occupied in nearby natural forests. This summary takes some methodological details from Tanaka et al. (2003). The date of biomass monitoring is not clear, but was likely in 2011 or later.

    Additional Reference: Tanaka Y, Arita K, Yauchi E. 2003. A mangrove mitigation project in Singapore. Asia and Pacific Coasts 2003: Proceedings of the 2nd International Conference, Makuhari, Japan, 256–257.

    (Summarised by: Nigel Taylor)

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust