coastal infrastructure protection using hard and soft
TRANSCRIPT
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Coastal Infrastructure Protection Using Hard and Soft Engineering Technologies:
the case of Mauritius
Prakash (Sanju) Deenapanray, PhD
ELIA – Ecological Living In Action Ltd La Gaulette
Mauritius ([email protected])
Adaptation Futures, Rotterdam 10 May 2016
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Outline
1. Location of Mauritius • geography of island
• Socio-economic value of coastal activities
2. Results of Technology Needs
Assessment (TNA) – cursory view • Prioritised coastal adaptation technologies
3. Examples of hard and soft engineering
technologies for coastal infrastructure
protection
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Where is Mauritius? (20.17oS, 57.33oE)
Geography of Mauritius Volcanic with escarpments very
close to the coast (e.g South West Coast)
~320 km of coast line surrounded by coral reefs (mix of sandy and
rocky/muddy beaches)
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Socio-economic value of coastal activities
• Coastal areas contain 20% of population (~1.3 million)
• Rs 74 billion (~ US$ 2 billion) in revenue generated
directly from coastal zones (36% of GDP)
• 99% of this revenue is generated by tourism
• In 2015, tourist arrivals was 1,151,723
• ~93% of hotel guest capacity is found in coastal areas
• Total economic value of coastal areas is of the order of
Rs 1 trillion (~ US$ 28.5 billion)
(Sources: TNA Report (2012); Statistics Mauritius)
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Outline
1. Location of Mauritius • geography of island
• socio-economic value of coastal activities
2. Results of Technology Needs
Assessment (TNA) – cursory view • prioritised coastal adaptation technologies
3. Examples of hard and soft engineering
technologies for coastal infrastructure
protection
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1. To identify and prioritize through country-driven
participatory processes, technologies that can contribute to
mitigation and adaptation goals of the participant countries,
while meeting their national sustainable development goals
and priorities (TNA);
2. To identify the barriers that hinder the acquisition,
deployment, and diffusion of the prioritized technologies for
mitigation and adaptation; and
3. To develop Technology Action Plans (TAP) that specify
activities and enabling frameworks to overcome the
barriers and facilitate the transfer, adoption, and diffusion of
selected technologies in the participant countries
Technology Needs Assessment project (2012-2013)
1. Coastal vegetation restoration (soft)
2. Wetland protection (soft)
3. Dune restoration (hard & soft)
4. Rock revetment (hard)
Prioritised technologies for coastal adaptation
(Source: TNA Report (2012)
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Outline
1. Location of Mauritius • geography of island
• socio-economic value of coastal activities
2. Results of Technology Needs
Assessment (TNA) – cursory view • prioritised coastal adaptation technologies
3. Examples of hard and soft engineering
technologies for coastal infrastructure
protection
Rock revetment Coastal
vegetation (mangroves)
Setback & Restricted
beach access
Beach nourishment
Locations of coastal interventions (South West of Mauritius)
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Rock Revetment (Maconde)
Rock revetment (Le Morne / Maconde)
Restoration of coastal vegetation (community-based adaptation projects)
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Beach nourishment (La Preneuse)
Beach nourishment
Setback (>30 from HWM)
1970s (no EIA)
2010s (with EIA)
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Restricted access to vehicles on public beaches
Restricted access
ELIA – Ecological Living In Action Ltd
Thank You
Prakash (Sanju) Deenapanray [[email protected]]
www.EcoLivingInAction.com
Mob: +230 5924 3395