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Dutch dune revival Voorne and Goeree


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Dynamic Dunes Congress 2015
Keynote Matthijs Broere - Dutch dune revival Voorne and Goeree

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Dutch dune revival Voorne and Goeree

  1. 1. LIFE Dutch Dune Revival: Voorne and Goeree
  2. 2. Contents • Introduction: threats & causes • Dune restoration project • Preparation: data gathering, map drawing, calculations, permits • Preparation: work descriptions, project management • Implementation: actions and methods • Future management • Communication (by Ted Sluijter) • First results: an impression • Conclusions
  3. 3. Introduction: threats & causes • Calcareous dune areas very valuable, also on an international scale. High biodiversity in dune grasslands, shrublands and humid dune slacks. • Threat: strong decline in the past decades of the open and dynamic dune landscape. • Threat: rapid vegetation succession: loss of dune grasslands, dune slacks and accompanying species. • Causes: reduced dynamics (coastal defence), collapsing rabbit populations, nitrogen deposition, vegetation succession.
  4. 4. Introduction: threats & causes •(ha)
  5. 5. 5 sub areas: Voornes Duin • Waterbos 2011 • Stekelhoek 2013 • Quackjeswater 2013 Duinen van Goeree • Vuurtoren 2011 • Strand Noord 2013 Dune restoration project
  6. 6. Preparation: data analysis, map drawing Historical data • target species • target habitats Current distribution • species and habitats Abiotics • hydrology • seepage • humus layer Data essential for • choice of measures and locations • t=0 • preparation of maps • implementation of measures
  7. 7. Preparation: map drawing, calculations Designation of locations and measures: • What? • Where • How much? • When? Ecological protocol: • Current values • N2000 habitats and species • Other species • Vulnerable situations • Mitigation and improvement
  8. 8. Preparation: permits Flora and Fauna Law Nature Protection Law Environmental Law Forest Law …and others Furthermore: Explosives, transport routes etc.
  9. 9. Preparation: work descriptions and project management External expertise: Eelerwoude • Technical work descriptions and maps • Permits • Tender procedure • Co-supervision on the implementation
  10. 10. Implementation: actions and methods • Humid dune slacks: sod-cutting • Dune grasslands: mowing • Shrubs and trees: removal • Start: October 2011 • End: March 2014
  11. 11. Habitat type Before LIFE (hectares) After LIFE (hectares) Difference (hectares) H0000 (No habitat type) 1244,79 1183,52 -61,27 H2110 (Embryonic shifting dunes) 5,02 5,02 0,00 H2120 (White dunes) 2,53 4,16 1,62 H2130 (Grey dunes) 16,32 119,35 103,03 H2160 (Dunes with Hippophae rhamnoides) 72,63 18,67 -53,97 H2180 (Dune forest) 24,35 20,62 -3,73 H2190 (Humid dune slacks) 1,43 18,72 17,29
  12. 12. Sub area Waterbos Voornes Duin • Very wet conditions • Rapid expansion of shrubland and forest • Small remnants of – dune slacks – calcareous dune grasslands • Aspen colonization
  13. 13. Waterbos Actions • Shrub and tree removement • 56 ha dune grasslands H2130 • Sod cutting • 16 hectares of humid dune slacks H2190 • 22.000 m3 • Burried in coastal defense zone • 5,5 kilometers of fencing
  14. 14. Waterbos Main Improvements • Connection with other dune restoration project – exchange of species – connected landscape (H2130) • More landscape dynamics • Humid dune slacks (H2190) • Target species (a.o.): – bog pimpernel (Anagallis tenella) – variegated horsetail (Equisetum variegatum) – fen orchid (Liparis loeselli).
  15. 15. Sub area Vuurtoren Duinen van Goeree • Very dry circumstances • Calcareous dune grasslands • Rapid increase of shrubland • Still lots of good quality dune grasslands
  16. 16. Vuurtoren Actions • Shrub removal: 13 ha • Mowing of rough dune grassland: 25 ha • Very detailed work to spare dune grasslands in good quality
  17. 17. Vuurtoren Main improvements • 25 ha calcareous dune grasslands (H2130) restored • Quality of H2130 improved • Target species (a.o.): – European turtle dove (Streptopelia turtur) – Sand lizard (Lacerta agilis) – Carline thistle (Carlina vulgaris)
  18. 18. Sub area Stekelhoek Voornes Duin • Dense shrubland • Sandy slopes • Steep slopes • Dune slacks covered by shrubland
  19. 19. Stekelhoek Actions • Removal of 17 ha of shrubs and trees • Sod cutting of 9000 m2 of dune slacks • 3500 m3 of soil burried in the coastal defence zone • 2,2 kilometers of fence
  20. 20. Stekelhoek Main improvements • Connection with other dune restoration project – exchange of species – connected landscape (H2130) • Humid dune slacks (H2190) and dune grasslands (H2130) • Target species (a.o.): – Round-leaved wintergreen (Pyrola rotundifolia) – Marsh helleborine (Epipactis palustris) – Common twayblade (Neottia ovata) – Blue winged grasshopper (Oedipoda caerulescens) – Queen of Spain fritillary (Issoria lathonia).
  21. 21. Sub area Quackjeswater Voornes Duin • Dune lake – Eurasian spoonbill (Platalea leucorodia) – Little egret (Egretta garzetta) – Black-necked grebe (Podiceps nigricollis) • Isolated dune grasslands • Humid dune slacks • Aspen expansion • Shrubland increase
  22. 22. Quackjeswater Actions • Shrubs and trees: 12 ha removed • 3200 m2 top soil removement in dune slacks • 2700 m3 of soil removed • 3,3 kilometers fencing
  23. 23. Quackjeswater Main improvements • Connection with other dune restoration project – exchange of species – connected landscape (H2130) • Humid dune slacks (H2190) and dune grasslands (H2130) • Target species (a.o.): – Yellow-wort (Blackstonia perfoliata) – Seaside centaury (Centaurium littorale) – European stonechat (Saxicola rubicola)
  24. 24. Sub area Strand Noord Duinen Goeree • Tiny remnants of dune grassland (H2130) • Overgrown by shrubland • Quality of shrubland with sea buckthorn (H2160) is decreasing – Overgrown by bramble
  25. 25. Strand Noord Actions • Removal of shrubs: 22 ha • Removal of 2600 m3 of top soil (shrubland with a thick humus layer)
  26. 26. Strand Noord Main improvements • Improvement of dune grassland (H2130). • 22 ha of dune grassland (H2130) restored. • Target species (a.o.): – European rabbit (Oryctolagus cuniculus) – Northern wheatear (Oenanthe oenanthe) – Grey hair-grass (Corynephorus canescens) – Common milkwort (Polygala vulgaris)
  27. 27. Future management The work is not finished: Intensive management due to regrowth of shrubs and trees Nutrient removal in • dune grasslands (nitrogen!) • humid dune slacks (nitrogen!)
  28. 28. Future management • Mowing with machines – dune slacks – dune grasslands • Mowing manually – slopes – regrowth of shrubs and trees • Grazing – extensive, year round.
  29. 29. Communications Strategy Excecution Means
  30. 30. Communications No platform for bawlers Individual contacts
  31. 31. Communications Intern: Own staff Volunteers Supporters Extern: Targeting audience
  32. 32. Communications Experts a.o. St. Duinbehoud
  33. 33. Communications ‘Green’ organizations Voorne & Goeree: -Zuidhollands Landschap -KNNV -IVN -Staatsbosbeheer -RAVON -Sticht. Natuur- en Landschap Voorne Putten -Vereniging Natuur- en Landschap Goeree- Overflakkee -WNF afd ZH Eil. -WBE’s Voorne & Goeree
  34. 34. Communications Visiting clubs & associations -Scouting -Atletiekver. De Stelle Runners -Nordic Walking Fitt Up -Meer bewegen voor ouderen -De Stelle Vrouwen -Vrouwen rondom Goeree -Chr. Vrouwenver. CVB -Vrouwengespreksgroep
  35. 35. Communications Residents
  36. 36. Communications Production & distribution DVD Voornes Duin
  37. 37. Communications Flyer
  38. 38. Communications Displays
  39. 39. Communications Newspaper
  40. 40. Communications Work in progress; information
  41. 41. Communications on machinery
  42. 42. Communications Website
  43. 43. Communications Local & nationwide media
  44. 44. Communications Permanent information panels
  45. 45. First results: an impression T=1 Waterbos finished T=1 in the other sub areas in 2015 First results of the Waterbos area are promising Results in nearby reference areas with comparable restoration measures are encouraging
  46. 46. First results: an impression Sub area Waterbos: Before measures: 44 plant species of the Red List present Months after the project: already 59 plant species of the Red List present Many species have expanded their distribution and numbers have been increased Quote of a report of an external party (Van der Goes en Groot, 2012): “Big areas of the forest in the west and north have been removed. Also, many shrubland in the west part has been removed. Lower parts have been sod-cut. Those places are filled with water in spring and they already contain well developed vegetations of common stonewort (Chara vulgaris) and a few bristly stonewort (Chara hispida).Various-leaved pondweed (Potamogeton gramineus) has established in pools. Development can be really quick, proved by recolonization of several species within just a few months: yellow-wort (Blackstonia perfoliata), seaside centaury (Centaurium littorale), distant sedge (Carex distans), sea milkwort (Glaux maritima) and even bog pimpernel (Anagallis tenella)”. Van der Goes en Groot, 2012: “People have been enthusiastic about the humid dune slacks. And not without reason. The restored valleys show a splendid development. The quality of these areas is improving. The first results of the area Waterbos are very promising”
  47. 47. First results: an impression What else can we expect in the LIFE DDR project area? Reference areas in Voornes Duin: Vogelpoel (restoration project 2007) De Pan (restoration project 2005) Quality and surface of H2130 and H2190 has been improved. Recolonization of (amongst others): bog pimpernel (Anagallis tenella), variegated horsetail (Equisetum variegatum), bee orchid (Ophrys apifera), Grass-of-parnassus (Parnassia palustris), small-fruited yellow-sedge (Carex viridula), yellow-wort (Blackstonia perfoliata)
  48. 48. Conclusions Habitat restoration works Thanks to LIFE we managed to reach our goals Threats still exist: intensive management afterwards remains necessary Do not underestimate the importance of proper communication Monitoring might be improved: landscape processes
  49. 49. Thank you for your attention. Questions?
  50. 50. Excursions Please choose: Location 1: De Pan / Stekelhoek / Quackjeswater Guides: Wouter van Steenis, Matthijs Broere Emphasis on ecology Location 2: Waterbos Guides: Gert de Groot, Ted Sluijter Emphasis on technical issues and communication Both excursions will depart from the parking lot at 13:00 h and will return around 16:00 h.