Ecosystems services in mosaic landscapes Brent Swallow Global Coordinator of the ASB Partnership for the Tropical Forest Margins, World Agroforestry Centre, Nairobi, Kenya

Learning points 1.Ecosystem services as an integrating concept / framework 2.Overall trends and tradeoffs between ecosystem services 3.High prevalence of mosaic landscapes across most of the developing world 4.Importance of scale and stake in the ecosytem services generated by mosaic landscapes 5.Potential for synergies and tradeoffs among ecosystem services in mosaic landscapes 6.Limits on the effectiveness of rules for safeguarding ecosystem services and growing interest in recognition, rights and rewards

Millennium Ecosystem Assessment Findings

Ecosystem Services The benefits people obtain from ecosystems

Consequences of Ecosystem Change for Human Well-being

Unprecedented change in structure and function of ecosystems More land was converted to cropland in the 30 years after 1950 than in the 150 years between 1700 and Cultivated Systems in 2000 cover 25% of Earth’s terrestrial surface (Defined as areas where at least 30% of the landscape is in croplands, shifting cultivation, confined livestock production, or freshwater aquaculture)

ServiceStatus Foodcrops  livestock  capture fisheries  aquaculture  wild foods  Fibertimber +/– cotton, silk +/– wood fuel  Genetic resources  Biochemicals, medicines  Fresh water  Status of Provisioning Services

Status of Regulating and Cultural Services Status Regulating Services Air quality regulation  Climate regulation – global  Climate regulation – regional and local  Water regulation +/– Erosion regulation  Water purification and waste treatment  Disease regulation +/– Pest regulation  Pollination  Natural hazard regulation  Cultural Services Spiritual and religious values  Aesthetic values  Recreation and ecotourism +/–

Degradation of ecosystem services often causes significant harm to human well-being –The total economic value associated with managing ecosystems more sustainably is often higher than the value associated with conversion –Conversion may still occur because private economic benefits are often greater for the converted system

Level of poverty remains high and inequities are growing Economics and Human Development –1.1 billion people surviving on less than $1 per day of income. 70% in rural areas where they are highly dependent on ecosystem services –Inequality has increased over the past decade. During the 1990s, 21 countries experienced declines in their rankings in the Human Development Index Access to Ecosystem Services –An estimated 852 million people were undernourished in 2000–02, up 37 million from the period 1997–99 –Per capita food production has declined in sub-Saharan Africa –Some 1.1 billion people still lack access to improved water supply, and more than 2.6 billion lack access to improved sanitation –Water scarcity affects roughly 1–2 billion people worldwide

Industries based on ecosystem services still the mainstay of many economies Contributions of agriculture –Agricultural labor force accounts for 22% of the world’s population and half the world’s total labor force –Agriculture accounts for 24% of GDP in low income developing countries Market value of ecosystem-service industries –Food production: $980 billion per year –Timber industry: $400 billion per year –Marine fisheries: $80 billion per year –Marine aquaculture: $57 billion per year –Recreational hunting and fishing: >$75 billion per year in the United States alone

Direct drivers growing in intensity Most direct drivers of degradation in ecosystem services remain constant or are growing in intensity in most ecosystems

Importance of mosaics & forest margins areas across humid tropics

FOREST BIODIVERSITY SUITABILITY ACROSS A LANDSCAPE MATRIX Proportional Area & Suitability for Forest Biodiversity Conservation Low High Matrix Habitat Suitability High Low URBAN MONOCULTURES Crop Plantation Imperata grassland Complexagroforests & Swiddens Simple agroforests Trees in fields AGROECOSYSTEMS FOREST PRODUCTION SYSTEMS NTFP harvest CL & enrichment RIL + reserves PROTECTED INTACT HABITAT

Figure 2.1. Relationships between population density and fraction of forest cover in Indonesian districts (Source: Murdiyarso et al., 2006).

Multiple land use types in mosaics & forest margin areas

Biodiversity Plot measurements in Bungo District, Jambi Saida and Gregoir Vincent, in prep Saida and Gregoir Vincent, in prep Total number of trees > 15 cm DBH encountered Number of Tree Species Natural forest Old rubber agroforest Productive rubber agroforest

What biodiversity goals do ‘we’ want to achieve? Do agroecosystems really have low biodiversity value? Ecosystem services of biodiversity indeed be important for local people Integrated Conservation and Development Projects have had mixed results Questions/issues raised in consultations

Biodiversity and Human Activity N of species (in area of constant size) Intensity of Human Activity Extraction Agroforestry Extensive Agriculture Intensive Agriculture Species that go locally extinct when humans are active: exploited or sensitive to disturbance Most vulnerable, hence threatened everywhere, and in need of protection Van Noordwijk et al. 2001

‘demand-driven’ conservation efforts tend to start too late…..

Carbon x profitability tradeoffs – Manupali, Philippines NPV ($,000 / ha) Primary forest Agroforestry Coffee Rubber Sugarcane Pineapple Banana Rice Corn Time-averaged C (tonnes / ha)

Responses Recognition: necessary, problematic Regulation: necessary, rarely sufficient Rights: necessary, but to right people Rewards: not necessary, but often useful

Learning resources and websites Millenium Ecosystem Assessment: ASB lecture notes: Ecoagriculture Partners landscape measures tools: ICRAF: –TULSEA: –RUPES: –PRESA: presa.worldagroforestry.org Learning resources[List useful teaching materials/resources including lecture notes, to audio- visual resources, case studies, etc.]

Recommended Reading MA reports Ecology and Society ( McNeely and Scherr, Ecoagriculture.

Key issues for further discussion in the workshop What is the best way to integrate these broader concepts and frameworks into training on agrobiodiversity? Are there enough learning materials on the shelf, or do these need to be developed / adapted to local contexts?