Fluss frei! Dam removal hits Switzerland. DRE Workshop Birmingham

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1 Fluss frei! Dam removal hits Switzerland DRE Workshop Birmingham

2 PROGRAMME 1. Why? the problem 2. What for? the goals 3. How? the project Fluss frei! 4. Where? the project areas 5. Who? the project group Fluss frei! 2

3 Why Einheimische Fische undwhere Krebse What for How Hecht Barbe Hundsbarbe Pigo Rotauge Laube Bachforelle Aal Bachneunauge Ghiozzo Stichling Who Moorgrundel Nase Maifisch Cheppia Brachsmen Schmerle/Bartgrundel Atlantischer Stör Agone Felchen Strömer Sofie Cagnetta Apron/Roi du Doubs Blicke Schleie Elritze Huchen Alborella Moderlieschen Kaulbarsch Seesaibling Trüsche Meerforelle Steinbeisser/Dorngrundel Äsche Rotfeder Alet Savetta Seeforelle Karpfen Atlantischer Lachs Wels Gründling Triotto Strigione Dohlenkrebs Marmorierte Forelle Flussneunauge Egli/Flussbarsch Hasel Groppe Südbarbe/Barbo Bitterling Schneider Steinkrebs Edelkrebs Mittelmeer-Stör M. Roggo Daten: VBGF 2014, Bilder: Michel Roggo, w w w.roggo.ch Fluss frei! 3

4 75% Why unserer Fisch- What und for Krebsarten How 75% sind unserer ausgestorben Where Fisch- und Krebsarten oder Who gefährdet sind au Rotauge Hecht Barbe Hundsbarbe Rotauge Pigo Hecht Aal Barbe Moorgrundel Hundsbarbe MaifischPigo Brachsmen Schleie Kaulbarsch Rotfeder Gründling Laube Laube Bachneunauge Ghiozzo Bachforelle Bachforelle Brachsmen Stichling Schmerle/Bartgrundel Nase Ghiozzo Schmerle/Bartgrundel Agone Agone Felchen Felchen Strömer Sofie Schleie Blicke Elritze 75 Elritze % of our fish and crab species arealborella Moderlieschen Alborella Cagnetta Moderlieschen Apron/Roi du Doubs KaulbarschSeesaibling Trüsche Trüsche threatened or already extinct! Äsche Alet Karpfen Triotto Wels Egli/Flussbarsch Rotfeder Seeforelle Gründling Strigione Steinbeisser/Dorngrundel Savetta Alet Karpfen Äsche Triotto Wels Marmorierte Forelle Egli/Flussbarsch Dohlenkrebs Bachneunauge Cheppia Atlantischer Stör Blicke Huchen Seesaibling Meerforelle Seeforelle Atlantischer Lachs Strigione Flussneunauge Hasel Groppe Südbarbe/Barbo Bitterling Schneider Hasel Groppe Südbarbe/Barbo Bitterling Schneider Steinkrebs Edelkrebs Mittelmeer-Stör nicht gefährdet gefährdet vom Aussterben bedroht ausgestorben nicht gefährdet gefährdet vom Aussterben bedroht ausgestorben Daten: VBGF 2014, Bilder: Michel Roggo, Daten: VBGF 2014, Bilder: Michel Roggo, Fluss frei! 4

5 more than artificial barriers (> 50 cm) on average every 645 m a barrier artificial barriers hydropower plants (>300 kw) large dams Fluss frei! 5

6 VISION By removing obsolete barriers we want to reconnect rivers and improve the aquatic habitats in general. Fluss frei! 6

7 PROJECT GOALS Removal of as many as possible (unnecessary) barriers: longitudinal connectivity of the river stretches is restored Development of a practice-oriented approach for the removal of unnecessary barriers Raising awareness of authorities and the general public Wissenschaftliche Begleitung Bildungs- und Öffentlichkeitsarbeit Tagliamento Fluss frei! 7

8 MODULES Module 1: Analysis and typification Collection, analysis and typification (function, zone etc.) of the existing barriers in selected catchment areas (CA) Module 2: Rating, selection and feasibility Calculation of the removal potential : ecological potential, technical feasibility selection Module 3: Pre-Project Development of pre-projects for the most promising objects of module 2 Module 4: Removal Development and implementation of construction projects (incl. monitoring) Scientific support Sensitization and public relations next object, next catchment area, next canton, Fluss frei! 8

9 RATING Why What for How Where Who How to handle that incredible amount of barriers and identify the most promosing ones.. ECOLOGICAL POTENTIAL - bank&sole morphology - barrier type - passability - river size - protected areas - red list species - river deltas - location in the CA all barriers in a catchment area REDUCTION leave: - natural barriers - barriers in rivers <0.8m sole width FILTER FUNCTIONS according to the location within the CA, ecomorphology often TECHNICAL EFFORT - size of the river - river slope - land ownership - drop height - groundwater - cables/pipes - other structures (bridges etc.) - accessibility FIRST-PICK most promising barriers (highest rating) FINAL PICK - political feasibility - opportunities REMOVAL MONITORING Fluss frei! 9

10 MÖNCHALTORFER AA Legend Barriers artificial drop structure natural drop water usage Ecomorphology natural/near natural slightly modified heavily modified non-natural / artificial culverted TOTAL Drops Structures Fluss frei! 10

11 MÖNCHALTORFER AA REDUCTION Drops Structures barriers Fluss frei! 11

12 MÖNCHALTORFER AA Legend Migration barriers not classified not passable scarcly passable passable natural drops hydropower plants Ecomorphology natural/near natural slightly modified heavily modified non-natural / artificial culverted not verified Revitalization planning cantonal communal FILTER Drops Buildings barriers Fluss frei! 12

13 Why What for How Where Who Legend MÖNCHALTORFER AA Migration barriers 1. Preference 2. Preference 3. Preference Ecomorphology natural/near natural slightly modified heavily modified non-natural / artificial culverted not verified Revitalization planning Buildings barriers Fluss frei! Preference 1 A3 Tüftalerbach A4 - A6 Tüftalerbach A7 - A10 Tüftalerbach A11- A14 Mettlenbach A15 Mettlenbach 0.46 A16 Aa B5 - B14 Aa A19 Aa A20 Aa A21/ A22 Aa cantonal communal high (0.5-1) medium ( ) small (0-0.25) Ecological potential easy, cheap (0.5-1) Bluntschlibach difficult, expensive ( ) A1/ A2 Technical effort really difficult (0-0.25) River nearly impossible (<0.25) RATING 1. PICK Drops Barrier

14 Why What for How Where Who Legend MÖNCHALTORFER AA Migration barriers 1. Preference 2. Preference 3. Preference Ecomorphology natural/near natural slightly modified heavily modified non-natural / artificial culverted not verified Revitalization planning cantonal communal 1. preference 1. preference 1. preference 1. preference 1. preference Fluss frei! 14

15 Anzahl Hindernisse Why What for How Where Who Feasibility studies, pre-projects, today tomorrow? Fluss frei! 15

16 SCHEDULE 1. Phase: Module 1: Analysis and typification Module 2: Rating, selection, fesibility Selection of objects Module 3: Pre-Project Module 4: Removal project Success control Project implementation Sensitization and pubic relations Eco-Naturkongress 2017 Recommendation for action Movie Symposium Final report Implementation Milestone Fluss frei! 16

17 PROJECT AREAS AG ZH Aabach Uster Wyna Mönchaltorfer Aa Reppisch Fluss frei! 17

18 PARTNERS Fluss frei! 18

19 Thanks for your attention questions?