Coastal Vulnerability Model:
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Coastal Vulnerability Model: Mapping the Coastal Protection Benefits Provided by the Natural Environment. Greg Guannel , K. Arkema , M. Papenfus , G. Verutes , J . Bernhardt, A. Guerry , C.-K. Kim, M. Ruckelshaus, and J. Toft. fabiencousteau.org. Wave, Wind. Geomorphology, Relief.

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Fabiencousteau org

Coastal Vulnerability Model:

Mapping the Coastal Protection Benefits

Provided by the Natural Environment

Greg Guannel, K. Arkema, M. Papenfus, G. Verutes,

J. Bernhardt, A. Guerry, C.-K. Kim, M. Ruckelshaus, and J. Toft

fabiencousteau.org


Fabiencousteau org

Wave, Wind

Geomorphology, Relief

NOAA

Storm Surge

Natural Habitats

SaveGuanaCayReef


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Wave, Wind

adclassix.com

Geomorphology, Relief

NOAA

Storm Surge

Marine InVEST

jimmymacofphoenix.com

Natural Habitats

SaveGuanaCayReef


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Marine InVEST Models

Input Data (reflect scenarios)

Model Outputs

(ecosystem services & values)

ECOSYSTEM SERVICES

VALUATION

Value ofcarbon sequestered

Carbon Sequestration

Carbon

TERRESTRIAL SYSTEMS

Wave Energy

Value of captured wave energy

Wave

Energy

BIO-PHYSICAL

Coastal Protection

Avoided

Area

Avoided damages

Bathymetry & Topography

HabitatRisk

Species distribution

SCENARIOS

Value of recreation

activity

Recreation

Tourism Revenue

Oceanography

Habitat type

WaterQuality

Fishery

Landed

Biomass

Net present value of finfish and shellfish

SOCIO-ECONOMIC

Aquaculture

Harvested

Biomass

Population density

Visitation Rates

Aesthetic Quality

Aquaculture operation costs

Property values


Mapping coastal vulnerability to erosion and flooding

Mapping Coastal Vulnerability to Erosion and Flooding


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  • Oi!

  • Are there areas that are more exposed to impacts of high waves and winds than others?

  • Are there natural factors that can reduce these impacts?


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  • Is this area vulnerable to erosion and inundation during storms?

  • How do changes in the natural environment affect that vulnerability?

  • Why does this bloody hell matter to peopleanyways?


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  • Fascinating questions!

  • Let’s solve them, with the CV model!


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Coastal Protection Model

Two Types of Habitats

Two Types of Hazards

Living

Erosion

Non-living

Flooding


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Coastal Protection Model

Inputs

Coastal Vulnerability Model

  • Know the Environment

  • Evaluate Scenarios

Erosion/Inundation Model


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Coastal Vulnerability Index

  • Qualitative assessment of vulnerability based on mixture of relative and absolute ranking of variables


Coastal vulnerability outputs

Coastal Vulnerability Outputs


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What’s in an Index?....rock


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Living Things! (mostly)


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Lots of Water…AND LAND!


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Relative Sea Level Change

British Columbia. Ministry of Water, Land and Air Protection

Need to take land movement into account!


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Coastal ExposureIndex?

Wind


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Wind Exposure

U


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Wave Exposure

U

Exposed shorelines: ocean waves

Sheltered shorelines: locally-generated waves


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Flooding!


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Coastal Vulnerability Index

  • Qualitative assessment of vulnerability based on mixture of relative and absolute ranking of variables


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  • Example Inputs


Fabiencousteau org

  • Example Inputs


Vulnerability index output

Vulnerability Index Output


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  • Oh! And What Did Martha Say?

  • Why does this bloody hell matter to people anyways?


Limitations and assumptions

Limitations and Assumptions

- Complex coastal processes summarized by 7 variables

Screening Tool

- No prediction of shoreline change

Qualitative Tool

- Site-specific sediment transport patterns ignored

General Tool


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Application


Model steps

Model Steps

  • Run Fetch Calculator

    • Fetch distances

    • Exposed/Non-Exposed Shorelines

  • Run Vulnerability Index


Erosion inundation model

Erosion/Inundation Model

[email protected]


Fabiencousteau org

Erosion/Inundation Model


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Erosion/Inundation Model

Can treat effects of coral reefs, mangroves, marshes, seagrass beds, oyster reefs and sand dunes


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Example Outputs: Oyster Reefs

Fetch Distances

Bathymetry Cross-Section


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Example Outputs: Oyster Reefs

Design Wave

H=1m; T=5s


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Example Outputs: Seagrass Beds


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Let’s Run the Model!


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Model Interface


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Parameters Table


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Geomorphology

How to Represent Structures?


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Natural Habitats

How/Why remove habitats in CV run?


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Wind and Wave Data


Model outputs

Model Outputs

  • Vulnerability Index

  • Erosion Index

  • Inundation Index


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Update – Ranking Natural Habitats

Current Ranking


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Update – Ranking Natural Habitats

More habitats = more protection!


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Wave Exposure – New Approach


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