Ecosystem services

Ecosystems support people through both products and processes. Some benefits are hard to price, but that does not make them absent.

Lesson 2 of 33 parts Practice Flashcards

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Provisioning service and Regulating service

Objective: Explain provisioning service and regulating service, distinguish their meanings, and apply them to a described case.

Provisioning service: Provisioning services are products obtained from ecosystems. Regulating service: Regulating services arise from ecological processes that moderate environmental conditions. Ecosystem-service categories organize benefits to people without implying that ecological value is limited to a price. Regulating processes often have thresholds and finite capacity. A wetland may retain some contaminants without safely handling any amount of pollution. Benefits can be distributed unequally, and actions favoring one service can reduce others. Evaluate the local evidence and affected groups when using service language in a management decision. Application: A community harvests food from a managed ecosystem. This most directly illustrates provisioning service. A wetland reduces some floodwater peaks. This most directly illustrates regulating service.

Worked examples

Try itOriginal teaching scenario: A community harvests food from a managed ecosystem. Which idea from this section does it most directly illustrate?Show answer

Step 1 — Read the observation: A community harvests food from a managed ecosystem. Step 2 — Recall the relevant idea: Provisioning services are products obtained from ecosystems. Step 3 — Connect the observation to the idea: The scenario is an illustration of provisioning service. Step 4 — Check the limit: This short scenario illustrates the concept; it does not establish every detail or exclude every other influence in a real situation.

Try itOriginal teaching scenario: A wetland reduces some floodwater peaks. Which idea from this section does it most directly illustrate?Show answer

Step 1 — Read the observation: A wetland reduces some floodwater peaks. Step 2 — Recall the relevant idea: Regulating services arise from ecological processes that moderate environmental conditions. Step 3 — Connect the observation to the idea: The scenario is an illustration of regulating service. Step 4 — Check the limit: This short scenario illustrates the concept; it does not establish every detail or exclude every other influence in a real situation.

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Provisioning service and Regulating service

Objective: Explain provisioning service and regulating service, distinguish their meanings, and apply them to a described case.

Worked examples

Try itOriginal teaching scenario: A community harvests food from a managed ecosystem. Which idea from this section does it most directly illustrate?Show answer

Try itOriginal teaching scenario: A wetland reduces some floodwater peaks. Which idea from this section does it most directly illustrate?Show answer

Cultural service and Pollination service

Objective: Explain cultural service and pollination service, distinguish their meanings, and apply them to a described case.

Cultural service: Cultural services include recreational, educational, aesthetic, and spiritual benefits. Pollination service: Animal-mediated pollination enables reproduction in many wild and cultivated plants. Ecosystem-service categories organize benefits to people without implying that ecological value is limited to a price. Regulating processes often have thresholds and finite capacity. A wetland may retain some contaminants without safely handling any amount of pollution. Benefits can be distributed unequally, and actions favoring one service can reduce others. Evaluate the local evidence and affected groups when using service language in a management decision. Application: A protected landscape supports recreation and cultural connection. This most directly illustrates cultural service. Insects transfer pollen among crop flowers. This most directly illustrates pollination service.

Worked examples

Try itOriginal teaching scenario: A protected landscape supports recreation and cultural connection. Which idea from this section does it most directly illustrate?Show answer

Step 1 — Read the observation: A protected landscape supports recreation and cultural connection. Step 2 — Recall the relevant idea: Cultural services include recreational, educational, aesthetic, and spiritual benefits. Step 3 — Connect the observation to the idea: The scenario is an illustration of cultural service. Step 4 — Check the limit: This short scenario illustrates the concept; it does not establish every detail or exclude every other influence in a real situation.

Try itOriginal teaching scenario: Insects transfer pollen among crop flowers. Which idea from this section does it most directly illustrate?Show answer

Step 1 — Read the observation: Insects transfer pollen among crop flowers. Step 2 — Recall the relevant idea: Animal-mediated pollination enables reproduction in many wild and cultivated plants. Step 3 — Connect the observation to the idea: The scenario is an illustration of pollination service. Step 4 — Check the limit: This short scenario illustrates the concept; it does not establish every detail or exclude every other influence in a real situation.

Water purification and Service trade-off

Objective: Explain water purification and service trade-off, distinguish their meanings, and apply them to a described case.

Water purification: Ecosystem processes can remove or transform some contaminants, with capacity depending on conditions. Service trade-off: Changing an ecosystem can increase one benefit while reducing another. Ecosystem-service categories organize benefits to people without implying that ecological value is limited to a price. Regulating processes often have thresholds and finite capacity. A wetland may retain some contaminants without safely handling any amount of pollution. Benefits can be distributed unequally, and actions favoring one service can reduce others. Evaluate the local evidence and affected groups when using service language in a management decision. Application: Wetland soils retain part of an incoming pollutant load. This most directly illustrates water purification. A land conversion increases crop output but reduces habitat. This most directly illustrates service trade-off.

Worked examples

Try itOriginal teaching scenario: Wetland soils retain part of an incoming pollutant load. Which idea from this section does it most directly illustrate?Show answer

Step 1 — Read the observation: Wetland soils retain part of an incoming pollutant load. Step 2 — Recall the relevant idea: Ecosystem processes can remove or transform some contaminants, with capacity depending on conditions. Step 3 — Connect the observation to the idea: The scenario is an illustration of water purification. Step 4 — Check the limit: This short scenario illustrates the concept; it does not establish every detail or exclude every other influence in a real situation.

Try itOriginal teaching scenario: A land conversion increases crop output but reduces habitat. Which idea from this section does it most directly illustrate?Show answer

Step 1 — Read the observation: A land conversion increases crop output but reduces habitat. Step 2 — Recall the relevant idea: Changing an ecosystem can increase one benefit while reducing another. Step 3 — Connect the observation to the idea: The scenario is an illustration of service trade-off. Step 4 — Check the limit: This short scenario illustrates the concept; it does not establish every detail or exclude every other influence in a real situation.

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