More space for rivers the manifold values of floodplains for challenges in water quality and quantity

Transcription

1 A future task in good hands More space for rivers the manifold values of floodplains for challenges in water quality and quantity Prof. Dr. Beate Jessel President, Federal Agency for Nature Conservation, Germany 7 th Sino-German Workshop on Biodiversity Conservation Challenges in Water Quality & Quantity - Approaches & Methodologies for Freshwater Ecosystem Management in the Context of TEEB Shenyang, China 6/7-9 July 2014

2 Outline of the presentation Introduction Current status of Manifold values of Arguing with Ecosystem Services Conclusions & Outlook Introduction Current status of in Germany The manifold ecosystem services of seminatural riverbanks esp. addressing water quality (nutrient retention) and quantity (flood protection) Limitations of economic valuation and potentials of arguing with ecosystem services, e.g. in TEEB DE Conclusions and outlook 7th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, July 2014

3 Wetland ecosystem services Foto: NABU Deutschland Recreation and tourism Flood protection Manifold ecosystem services of Nutrient retention and filtering functions Carbon sequestration

4 Current status of floodplain ecosystems in Germany Rhein, Germany Ems, Germany Industrial development in floodplains Intensive agricultural land-use in floodplains 6th Sino-German Workshop on Biodiversity Conservation TEEB for Cities and Urban-Rural Interactions with a focus on wetland ecosystem services, Bonn, July 2013

5 Current status of floodplain ecosystems in Germany Report on the status of floodplains in Germany (2009) Assessment of the potential natural distribution of nationwide Overview on the current status of in Germany Presentation of results in an easily understandable format

6 Current status of floodplain ecosystems in Germany km²/4,4 % of land cover in Germany would be natural alluvial areas, refering to 79 rivers Flood plains of big rivers used to be up to 10 km wide Massive loss of inundation areas 2/3 of former inundation areas are lost, even in remaining areas intensive land use BfN 2009

7 Incomplete consideration of costs and benefits Introduction Current status of Benefits Costs Manifold values of Arguing with Ecosystem Services Conclusions & Outlook Loss of Biodiversity Increased Flood Risks Reduced Nutrient Retention Modified after TEEB DE th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, China, July 2013

8 Addressing water quality: dike relocation and nutrient retention Close-to-nature river banks have the capacity to store up to t nitrogen and t phosphorus annually. The purification services of German rivers and in terms of nutrient retention have a monetary value of approx. 500 Mio. annually, that would need to be spent on comparably effective measures in agriculture. Source: Scholz et al. (2012)

9 Addressing water quantity: dike relocation and flood protection Through dike relocation (420 ha, completed 2009) in the Lenzener Elbe valley, the peak of floods in 2011 was reduced by approx. 35 cm than that of comparable floods in In the city of Schnackenburg, approx. 5 km upstream, the peak was reduced by more than 20 cm. Foto: J. Purps 2007 Source: Alexy u. Faulhaber (2011) Foto: K. Nabel 2011

10 Net present value in Mio Addressing water quality & quantity: Multifunctionality of Investment costs Benefit (avoided flood damages) Benefit (willingness to pay for biodiversity) Benefit (increased nutrient retention) Total (broad) multifunctional perspective Total (traditional) flood protection perspective Source: TEEB DE (2014), based on Grossmann et al. 2010) Foto: NABU Deutschland

11 Manifold ecosystem services and limits of valuation methodologies Foto: NABU Deutschland Groundwater recharge Biodiversity Cultural Identity Manifold additional ecosystem services of Recreation and tourism Carbon sequestration

12 Iceberg effect of valuation: monetary terms build a small top only Introduction Current status of Manifold values of Arguing with Ecosystem Services Conclusions & Outlook Monetary Value Quantitative Assessment Qualitative Review Monetarisation: e.g., avoided water purification costs, recreational value Quantification: e.g., quanity of clean water that reaches oceans Type of Use: For example, health, income and well being Full range of Ecosystem Services & Biodiversity Knowledge Gaps: The known and unkown ecosystem services Modified after TEEB DE 2012, ten Brink th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, July 2014

13 Rationales for nature conservation Introduction Current status of Manifold values of Arguing with Ecosystem Services Conclusions & Outlook Good reasons to protect nature Emotional rationale Ecological rationale Aesthetical rationale Ethical rationale and economic rationale Reflecting different types of values Intrinsic value of nature Economic values of nature Non-economic (e.g. cultural) values of Ecosystem Services and Biodiversity 7th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, July 2014

14 Ecosystem services a beneficial concept for nature conservation Introduction Current status of Manifold values of Arguing with Ecosystem Services Conclusions & Outlook Nature conservation policy Conservation of biological diversity Ecosystem Services linking different policies and science with policy Science Ecosystem Services Other sectoral policies Local sustainable development Improving drinking water provision Health Climate mitigation. 7th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, July 2014

15 Natural Capital Germany - TEEB DE Introduction Current status of Manifold values of published: I. Introduction brochure The value of nature for economy and society published: II. Business brochure Businesses perspective first draft: 1. Natural Capital and Climate Policy synergies & conflicts (2014) in compilation: 2. ES in rural areas and their valorisation (draft title, to be published 2014/15) Arguing with Ecosystem Services Conclusions & Outlook in preparation: 3. ES in the city protecting health and improve quality of life (draft title) 4. Natural Capital Germany A synthesis report 7th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, July 2014

16 Conclusions & Outlook Introduction Current status of Manifold values of Arguing with Ecosystem Services Conclusions & Outlook Intact and close-to-nature Offer a broad range of ecosystem services valuable to society All services should be taken into account when undertaking cost-benefit analysis Economic Valuation Is important to assess specific values of ecosystems Cannot assess all services, esp. cultural services Scenarios as an option to include unknown values Fostering science-policy-practice dialogue TEEB helps to raise awareness among researchers, policy-makers, practitioners and public for the role of ecosystem services and biodiversity 7th Sino-German Workshop on Biodiversity Conservation TEEB and Challenges in Water Quality & Quantity, Shenyang, July 2014

17 A future task in good hands More space for rivers the manifold values of floodplains for challenges in water quality and quantity Prof. Dr. Beate Jessel President, Federal Agency for Nature Conservation, Germany 7 th Sino-German Workshop on Biodiversity Conservation Challenges in Water Quality & Quantity - Approaches & Methodologies for Freshwater Ecosystem Management in the Context of TEEB Shenyang, China 6/7-9 July 2014