1. Economic development in ecological sensitive areas: an utopia or key to the future? Prof. Dr. Patrick Meire Tom Maris, Stefan Vandamme, Eric Struyf University of Antwerp Ecosystem management research group, Chair of Integrated Water Management

2. 2 Intro Nature Harbour Ecology Economy ? This conflict is clearly unsustainable, but unfortunately worldwide still very common!

3. 3 Carrying capacity Ecosystem services

4. 4

5. 5 Salmon mousse with corn salad Fillets of Norman Sole with puree of potatoes Jaffa-fondant cake

6. 6 Ingredients 1cornsalad 2coriander leaves 3celery leaves 4shallots 5cucumber 6lemon 7black pepper 8 olive oil  olives 9smoked salmon 10 sour cream  cows Ingredients 11fillets of sole 12 broth of fish  different species 13 white wine  grapes 14mussels 15shrimps 16mushrooms 17 flour  wheat 18 eggs  chickens 19lemon 20parsley 21potatoes Ingredients 22 sugar  sugarbeet 23cacao 24maizena 25walnuts 26oranges Salmon mousse on cornsalad fillets of Norman Sole with puree of potatoes Jaffa-fondantcake + aperitif, coffee, etc.  at least 30 species necessary!!

7. 7 IngredientsPrice/kg/L 1cornsalad 12 € 2coriander leaves 1,5 € 3celery leaves 1 € 4shallots 1,5 € 5cucumber 1 € 6lemon 2 € 7Black pepper 15 € 8 olive oil  olives 8 € 9smoked salmon 25 € 10 sour cream  cows 2,5 € IngredientsPrice/kg/l 11fillets of sole 30 € 12 broth of fish  different species 2 € 13 white wine  grapes 5 € 14mussels 10 € 15shrimps 20 € 16mushrooms 4 € 17 flour  wheat 1 € 18 eggs  chicken 0,20 € 19lemon 2 € 20parsley 5 € 21potatoes 1 € Ingredients 22 sugar  sugerbeet 1,5 € 23cacao 7 € 24 ma ï zena1 € 25walnuts 6 € 26 oranges 2 €

8. 8 1 Day 2 days 19 days 6 days 28 days Sole

9. 9 During different growth phases, the sole needs different types of food From phytoplankton to worms, shells and crustaceans. Ecosystem services

10. 10 Cyclops DaphniaBosmina

11. 11 The diet of an average juvenile sole and schrimp consists of about 25 species, when adult sole needed more than 70 different prey species to get at that stage! All these species have specific requirements to the environment where they occur and need in their turn other species to feed on! Also different habitats are needed during the lifecycle Ecosystem services

12. 12

13. 13 Products with a high market value (eg Sole) are dependent on species WITHOUT market value and on specific habitats as well without market value

14. 14

15. 15

16. 16 Ecological functioning versus Economy “Goods and services” (Costanza et al., Nature 1997)

17. 17

18. 18 As we goggle at the fluttering financial figures, a different set of numbers passes us by. Last Friday, Pavan Sukhdev, the Deutsche Bank economist leading a European study on ecosystems, reported that we are losing natural capital worth between US$2 trillion and US$5 trillion every year as a result of deforestation alone. The losses incurred so far by the financial sector amount to between US$1 trillion and US$1.5 trillion. Sukhdev arrived at his figure by estimating the value of the services — such as locking up carbon and providing fresh water — that forests perform, and calculating the cost of either replacing them or living without them. The credit crunch is petty when compared to the nature crunch.

19. 19 Ecosystem services Nature Harbour Ecology Economy Ecosystem services

20. 20 Conclusion 1 The carrying capacity of the earth for men is based on the “provisioning services” that we increased due to many different management activities. These services are, however, completely dependent on the supporting and regulating services and these deteriorated due to the human activities.  The consequences are much more far reaching than just the loss of habitat and species There is a clear link between ecosystem services and the economy

21. 21 What does this mean for an estuary? The Schelde as an example

22. 22 35853 42341 28,4 20,3 32000 34000 36000 38000 40000 42000 44000 19001990 Year Surface (ha) 0 5 10 15 20 25 30 % intertidal area total surface% intertidal

23. 23 Tidal evolution Schelde Weser Elbe and Weser Elbe

24. 24 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  biodiversity  habitat for rare species or for global population  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water water regulation and protection against flooding -Risks of flooding has increased significantly -  present management: Sigmaplan / Deltaplan -Heightening of dikes -Controlled inundation areas -Storm surge barrier

25. 25 Slope , current speed   marsh erosion  Continuing habitat loss

26. 26 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  biodiversity  habitat for rare species or for global population  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water protection against erosion -Many dikes are not protected by marshes, -  present managament: Reinforcement of dikes with stones and other forms of hard engineering

27. 27 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  biodiversity  habitat for rare species or for global population  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water sediment trap -Due to a lack of sedimentation areas, extremely high rates -  present managament: Dredging (up to 500.000 ton DW.y -1 removed from the area) NO link to sediment management in basin

28. FreshBrackish Marine Expected number of species

29. 29 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  habitat for rare species or for global population  biodiversity  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water trophic-dynamic regulations of populations habitat for resident and transient populations important habitat for global population nursery migration route -  severely impacted -  present management: “classical nature management” -Juridical measures -Species oriented measures -Vegetation management -  no impact at all on major problems like water quality

30. 30 NIOO Days Veldhoven, 5 Dec 2009 1968-2007 Observations Annual FW averages ? Increasing Chlorophyll a concentrations with decreasing nutrient inputs are contrary to classical story of eutrophication

31. NEW PROBLEMS? Distance to mouth (km) FREQUENT DSI DEPLETION

32. 32 Eutrophication Phaeocystis sp. blooms: “foam algae” Gonyaulax sp. blooms Toxic “red tides” ES from past to present

33. 33 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  habitat for rare species or for global population  biodiversity  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water Primary productivity -Reduced -No management

34. 34

35. 35 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  habitat for rare species or for global population  biodiversity  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water regulation net transport contaminants to North Sea regulation net transport of nutrients to North Sea -Strongly reduced! -Present management Reduction of imissions by environmental legislation  no link to processes  univariate approach

36. 36 VigorOrganisationResilience Supporting services  primary productivity  nutrient cycling  water cycling  habitat for rare species or for global population  biodiversity  nursery function  migration route  soil formation Regulating services  Air quality regulation  climate regulation  Water purification and waste treatment  Regulation of transport of nutrients and contaminants  disease regulation  pest regulation  pollination  Trophic-dynamic regulation  Waterregulation (protection against flooding)  Erosion regulation and sediment trap  Maintaining habitat structure and features (eg. tidal characteristics)  natural hazard regulation Provisioning services  fresh water  clean air  Food  Fiber  Fuel  genetic resources  biochemicals, natural medicines and pharmaceuticals  ornamental resources  fresh water

37. 37 Increase of energy in the system  Tides and discharge from the basin  Organic material (chemical energy) Capacity of the systeem to cope with this has been strogly reduced (the resilience of the systeem decreased)  Further h abitat loss/degradation  Further loss of species  LOSS OF ECOSSTEM SERVICES ES from past to present Conclusions

38. 38 An integrated strategy Requires: -Understanding of ecosystem services -Quantification of ES

39. 39 HT LT Role of marshes Tidal flat Exchange between marsh and pelagic 150 – 300 ton BSi 100 – 200 ton Si Struyf et al. 2005

40. 40 An integrated strategy Requires: -Understanding of ecosystem services -Quantification of ES  determine conservation objectives! What biodiversity we need to have (structural approach)? Which and how much services the ecosystem must deliver (functional approach)?

41. 41 Ecosystem services can be: -A volume of water that can be stored on marshes (  safety) -Amount of primary production needed to sustain the nursery function -Retention of nutrients -Buffering tidal energy -recreation -=  This are different ways to express a carrying capacity of the system An integrated strategy

42. 42 Tidal marsh mudflats Shallow water Service : Primary Production Si regeneration Pelagic habitat River Zm/Zp Phyto plankton Organic Load/ Si Regulation of nutrients biodiversity Habitat function Regulation of nutrients

43. 43 Final CO:  Max (surface S1,..Sn; F1,…,Fm)  Habitat quality Habitat1Habitat1 Conservation Objectives (CO) Species 1 population Surface S1 habitat quality density Function 1 habitat quality volume Surface F1 unit

44. 44 Understanding and quantification of ES Formulation of objectives The calculation of habitats surface needed Measures to maintain or restore habitats An integrated strategy

45. 45

46. 46 Small scale restoration during maintenance Mai 2002Jan 2001

47. 47 Ketenisse Marsh restoration

48. Pilot study Lippenbroek

49. Lippenbroek 1: Ring Dike 2: FCA dike 3: Inlet sluice 4: Outlet sluice 1 23 1 4 1 1 Management scenario Lippenbroek 10 ha of tidal nature developping since March 2006 Pilot project Lippenbroek

50. 50 Ecology: - Introducing estuarine ecosystem - Tidal regime in area - Two times a day! Ring DikeLowered FCA dike FCA estuary Outlet polder Concept FCA - CRT safety, ecology and a new ecosystem Safety: - Lowered dike stretch - Critical tides: whole storage capacity - Only few times/year! ‘New’ ecosystem: Lippenbroek since March 2006! - Area below high water level - Separate in- and outlet sluices at different heights: First CRT in the world with neap-spring tide cycle! Ring DikeLowered FCA dike CRT estuary Outlet Inlet polder

51. Pilot project Lippenbroek 10 ha of tidal nature developping: May 2008

52. Introducing macrotidal regime  Reduction of high water level by 3 meter  No reduction of spring – neap variation

53. 53 Water Quality measurements 3/7/2006 instreamoutstream

54. 54 Water Quality measurements 3/7/2006

55. 55

56. 56 Managed realignment 19901998

57. 57 Paull Holme Stray Humber estuary

58. 58 Hopper dredge Pontoon with diffusor diffusor Hopper dredge “habitat maintenance”

59. 59 Main goals to be achieved Increase the resilience of the system to dissipate the increased energy coming into the system -Tidal energy -Peak discharges from the catchment

60. 60 Main goals to be achieved Increase the resilience of the system to dissipate the increased energy coming into the system -Tidal energy -Peak discharges from the catchment -“Chemical” energy  enhance biogeochemical functioning (source and sink function of habitats)  improve primary production Restore morphological structure

61. 61 Required surface of different habitats The integrated approach Tidal habitats Non tidal habitats

62. 62 Spatial distribution of CO-Schelde: The integrated approach

63. 63 Controlled inundation + reduced tidal area

64. Structure Function Return to pristine situation is impossible. Sustainable solutions: Restoring functions Managed realignment? - Elevation often not suitable - Not always compatible with safetyplan Flood control area: restoring safety Controlled reduced tide: restoring ecology Schelde: solutions?

65. 65 Goals -accessability -safety -ecology Specific targets Current situation SYSTEM MONITORING general knowlegde nutrient cycling hydro/morfo- dynamics Food web RESEARCH MONITORING Knowlegde gaps PROJECT MONITORING Causal relations Projected measures -accessability -safety -ecology Legislation EU HD, BR, WFD National

66. 66 MONEOS Basic system monitoring time Integreated system monitoring Project 1 Project monitoring Project 2 Project monitoring Knowlegde Research monitoring

67. 67 Upscaling in time large variability Point measurements spatial spreading Continuous measurements Temporal spreading Models

68. 68 upscaling in space Remote sensing Point and transect measurements area covering spatial info Models

69. 69 Point measurements Spatial distribution Continuous measurements Temporal distribution Models Transect measurements Spatoial/temporal distribution

70. 70

71. 71 conclusions Ecosystems deliver services to society: -Ecosystem services But are therefore dependent on the presence of species and habitats and their performance.  not delivering these services has a high cost for society Restoration of estuaries should be based to a large extend on improving ES delivery

72. 72 Thanks for your attention