Integrated Catchment Management Developing Partnerships for a Sustainable Future William B. Bowden Landcare Research

What is “integrated catchment management”? An approach which recognises the catchment or river basin as the appropriate organising unit for research on ecosystem processes for the purpose of managing natural resources in a context that includes social, economic and political considerations.

Key points ICM as a research approach ICM as a management partnership The strategic context for ICM The Motueka Catchment initiative The Waitakere City initiative

Why use an ICM approach?

The fundamental challenges of managing land/water resources Understanding the consequences of resource uses distributed across land Understanding the consequences of resource uses distributed over time

Spatial organisation of resource uses

The fundamental challenges of managing land/water resources Understanding the consequences of resource uses distributed across land Understanding the consequences of resource uses distributed over time

Time Impact magnitude Temporal organisation of resource uses Single impact

Time Impact magnitude Temporal organisation of resource uses Cumulative impacts Threshold

Time Impact magnitude Temporal organisation of resource uses Mixed impact

The fundamental challenges of managing land/water resources Understanding the consequences of resource uses distributed across land Understanding the consequences of resource uses distributed over time Okay….so how to you do it?

What is the relationship between integrated catchment management and an ecosystem approach to resource management?

System components System “currencies” System drivers Plants Soils Inverts Fungi Bacteria Water C/N/P Climate Geology Topog Forest Typical Sites Knowledge Product: How do they work? BMP DSS Models Advice The Ecosystem Approach Exploring the state and function of representative systems.

Plants Soils Inverts Fungi Bacteria Water C/N/P Climate Geology Topog Forest Typical Sites The Ecosystem Approach The Catchment Approach Knowledge Product: How do they work? BMP DSS Models Advice The Simple Catchment Approach Quantifying material pools and fluxes within spatially-explicit systems. In Out

Plants Soils Inverts Fungi Bacteria Water C/N/P Climate Geology Topog Forest Typical Sites Grassland Typical Sites The Ecosystem Approach The Catchment Approach Knowledge Product: How do they work? BMP DSS Models Advice The Paired Catchment Approach Exploring the impacts of simple management alternatives

Plants Soils Inverts Fungi Bacteria Water C/N/P Climate Geology Topog Forest Typical Sites Grassland Typical Sites Wetland Typical Sites Heterogeneous Basins The Ecosystem Approach The Catchment Approach Knowledge Product: How do they work? Exploring linkages among landscape components BMP DSS Models Advice The Integrated Catchment Approach

Knowledge Product: How should they be managed? BMP DSS Models Advice The “Eco-Catchment” Approach Knowledge Product: How do they work? The Ecosystem Approach Plants Soils Inverts Fungi Bacteria Water C/N/P Climate Geology Topog Forest Typical Sites Grassland Typical Sites Wetland Typical Sites The Catchment Approach Heterogeneous Basins …other ecosystems Engineering Policy Economics Industry Tourism Community Culture …other knowledge bases

Knowledge Product: How do they work? Knowledge Product: How should they be managed? BMP DSS Models Advice Plants Soils Inverts Fungi Bacteria Water C/N/P Climate Geology Topog Forest Typical Sites The Ecosystem Approach The Catchment Approach Heterogeneous Basins …other ecosystems Engineering Policy Economics Community Culture Industry Tourism …other knowledge bases Urban “Eco-Catchments” Parks Typical Sites …these plus roads structures …plus fertilisers …plus user expect’n Develop Typical Sites …these plus buildings sewers services …plus energy …plus land value std living

ICM Integrated catchment management … as a way of thinking about “community” interactions Community Expectations Research knowledge Outreach Government Policy Governance Consulting