Examples include vegetated floodplains (whether permanent, seasonal or episodic), marshes, groundwater seeps, bogs, peatlands, mires and fens. 

Wetlands are often highly variable across both space and time. They often play a critically important role as biodiversity habitats and refuges at a landscape scale. 

This category corresponds to IUCN-GET biome TF1 (Palustrine wetlands).
Stocks (assets)
Flows (benefits)

Area of ecosystem asset

Units

ha

Example approach

Estimate % of total land area covered by ecosystem type, multiplied by total land area

Example methods/guidance/data sources/references

Internal records

Notes

TBD – please submit your suggestion at the feedback tab in the bottom right hand corner.

Units

ha

Example approach

Estimate extent using national/state/territory map data

Example methods/guidance/data sources/references

National/state/territory maps

Notes

TBD – please submit your suggestion at the feedback tab in the bottom right hand corner.

Units

ha

Example approach

Measure extent using remote sensing in combination with ground-truthing for detailed site mapping

Example methods/guidance/data sources/references

Producer or third party GIS

Notes

TBD – please submit your suggestion at the feedback tab in the bottom right hand corner.

Flood protection – number of people and/or buildings in a lower risk category

Units

Number

SEEA ES sub-type

River flood mitigation services

Intermediate or final (see SEEA-EA 2021, Table 6.3)

Final

Example approach

N/A

Example methods/guidance/data sources/references

N/A

Notes

This metric refers to the number of people and/or buildings that can be identified as being in a lower flood risk category than they would have been in the absence of the ecosystem providing the flood mitigation service. Usually this involves an assumption that the relevant ecosystem would otherwise have been bare land (see SEEA-EA 2021, Table 7.7), and requires some form of hydrological modelling to determine risk exposure in the existing situation as well as the baseline scenario.
River flood mitigation services may be provided along with water flow regulation services (including baseline flow maintenance services and peak flow mitigation services).

Units

Number

SEEA ES sub-type

River flood mitigation services

Intermediate or final (see SEEA-EA 2021, Table 6.3)

Final

Example approach

N/A

Example methods/guidance/data sources/references

N/A

Notes

This metric refers to the number of people and/or buildings that can be identified as being in a lower flood risk category than they would have been in the absence of the ecosystem providing the flood mitigation service. Usually this involves an assumption that the relevant ecosystem would otherwise have been bare land (see SEEA-EA 2021, Table 7.7), and requires some form of hydrological modelling to determine risk exposure in the existing situation as well as the baseline scenario.
River flood mitigation services may be provided along with water flow regulation services (including baseline flow maintenance services and peak flow mitigation services).

Units

Number

SEEA ES sub-type

River flood mitigation services

Intermediate or final (see SEEA-EA 2021, Table 6.3)

Final

Example approach

N/A

Example methods/guidance/data sources/references

N/A

Notes

This metric refers to the number of people and/or buildings that can be identified as being in a lower flood risk category than they would have been in the absence of the ecosystem providing the flood mitigation service. Usually this involves an assumption that the relevant ecosystem would otherwise have been bare land (see SEEA-EA 2021, Table 7.7), and requires some form of hydrological modelling to determine risk exposure in the existing situation as well as the baseline scenario.
River flood mitigation services may be provided along with water flow regulation services (including baseline flow maintenance services and peak flow mitigation services).

Units

tC or tCO2

SEEA ES sub-type

Global climate regulation services

Intermediate or final (see SEEA-EA 2021, Table 6.3)

Final

Example approach

Estimate using internal records and tools/calculators

Example methods/guidance/data sources/references

A variety of greenhouse gas accounting tools, some of which include methods to estimate sequestered and/or retained carbon, can be found at the Primary Industries Climate Challenges Centre

Notes

The ecosystem service of carbon retention is measured by the opening stock of retained carbon (see SEEA-EA s. 6.4.3, pp. 139-140) as a proxy for the flow of this service. The scope conventionally covers above- and below-ground living and dead biomass and soil carbon up to 2m depth. Carbon retained in harvested wood products should not be considered an ecosystem service (SEEA-EA, s. 6.4.3, pp. 139-140), although it could be included in an entity’s carbon account or impact statement. An increase in retained carbon from year to year should equal the flow of the ecosystem service of carbon sequestration.

Units

tC or tCO2

SEEA ES sub-type

Global climate regulation services

Intermediate or final (see SEEA-EA 2021, Table 6.3)

Final

Example approach

Estimate using using national/state/territory map data and/or remote sensing inputs

Example methods/guidance/data sources/references

E.g. ForestNow

Notes

The ecosystem service of carbon retention is measured by the opening stock of retained carbon (see SEEA-EA s. 6.4.3, pp. 139-140) as a proxy for the flow of this service. The scope conventionally covers above- and below-ground living and dead biomass and soil carbon up to 2m depth. Carbon retained in harvested wood products should not be considered an ecosystem service (SEEA-EA, s. 6.4.3, pp. 139-140), although it could be included in an entity’s carbon account or impact statement. An increase in retained carbon from year to year should equal the flow of the ecosystem service of carbon sequestration.

Units

tC or tCO2

SEEA ES sub-type

Global climate regulation services

Intermediate or final (see SEEA-EA 2021, Table 6.3)

Final

Example approach

Measure using site-specific remote and/or in-field sensing inputs and/or lab testing

Example methods/guidance/data sources/references

E.g. FullCAM

Notes

The ecosystem service of carbon retention is measured by the opening stock of retained carbon (see SEEA-EA s. 6.4.3, pp. 139-140) as a proxy for the flow of this service. The scope conventionally covers above- and below-ground living and dead biomass and soil carbon up to 2m depth. Carbon retained in harvested wood products should not be considered an ecosystem service (SEEA-EA, s. 6.4.3, pp. 139-140), although it could be included in an entity’s carbon account or impact statement. An increase in retained carbon from year to year should equal the flow of the ecosystem service of carbon sequestration.

Retained carbon – N/A

Units

N/A

Example approach

N/A

Example methods/guidance/data sources/references

N/A

Notes

There is no observable market for the ecosystem service of retaining existing carbon stocks, and the value of the service of retaining any newly sequestered carbon would be included in the valuation applied to the ecosystem service of carbon sequestration (see below), therefore it is not recommended that any monetary value is applied to retained carbon.

Units

N/A

Example approach

N/A

Example methods/guidance/data sources/references

N/A

Notes

There is no observable market for the ecosystem service of retaining existing carbon stocks, and the value of the service of retaining any newly sequestered carbon would be included in the valuation applied to the ecosystem service of carbon sequestration (see below), therefore it is not recommended that any monetary value is applied to retained carbon.

Units

N/A

Example approach

N/A

Example methods/guidance/data sources/references

N/A

Notes

There is no observable market for the ecosystem service of retaining existing carbon stocks, and the value of the service of retaining any newly sequestered carbon would be included in the valuation applied to the ecosystem service of carbon sequestration (see below), therefore it is not recommended that any monetary value is applied to retained carbon.

Last updated: 25th July 2023