1 / 28

MONITORING WETLANDS ALONG THE ‘WESTERN-GREEK BIRD MIGRATION ROUTE’

MONITORING WETLANDS ALONG THE ‘WESTERN-GREEK BIRD MIGRATION ROUTE’. Spatio-temporal change detection using remote sensing and GIS in Logarou Lagoon, Western Greece: a pilot study. By Ruth Lagring Currently working for MUMM – Management Unit of the North Sea Mathematical Models

irina
Download Presentation

MONITORING WETLANDS ALONG THE ‘WESTERN-GREEK BIRD MIGRATION ROUTE’

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MONITORING WETLANDS ALONG THE ‘WESTERN-GREEK BIRD MIGRATION ROUTE’ Spatio-temporal change detection using remote sensing and GIS in Logarou Lagoon, Western Greece: a pilot study By Ruth Lagring Currently working for MUMM – Management Unit of the North Sea Mathematical Models Promoter Prof. Nico Koedam Co-Promoter Ronny Merken Algemene Plantkunde en Natuurbeheer - Plant Biology and Nature Management

  2. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future FACTS Population of long-distance migratory birds is declining worldwide [Berthold, 2001; Birdlife International; Marchant et al., 1990; Çaganet al., 2004; Sanderson et al., 2006; Robbins et al., 1989; Fletcher, 2003] An important cause is the loss of suitable stopover-sites during migration [Berthold, 2001; Çağanet al., 2004; Davidson et al., 1996; Malcolm et al., 2002] p. 2

  3. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Breeding Stopover ‘Area with the needed resources and environmental conditions that support temporary occupancy by individuals of that species’ [Scott et al., 2002] Winter Souce: http://ngm.nationalgeographic.com/map-machine p. 3

  4. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Breeding Winter [ http://ngm.nationalgeographic.com/map-machine] p. 4

  5. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future International Conventions [http://www.cms.int/about/interactive_map/cms_parties_europe.htm] p. 5

  6. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future European Union  Natura 2000 p. 6 [http://en.wikipedia.org/wiki/European_Union]

  7. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Western-Greek Bird Migration Route ‘Flyway of birds following the western coast of the Greek mainland during their migration’ Wetlands [ http://ngm.nationalgeographic.com/map-machine] p. 7

  8. Introduction Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Convention on Wetlands of International Importance, especially as Waterfowl Habitat Wetlands as stopover habitats ‘Areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine waters, the depth of which at low tide does not exceed six meters.’ [Ramsar Convention, 1971] Logarou Lagoon, April 2007 • 2/3rd of the Greek wetland area has been drained (20th century) • Further degradation needs to be prevented p. 8

  9. Hypothesis and objectives Introduction Hypothesisand objectives Materials and methods Results Conclusions Future HYPOTHESIS Loss and/or deterioration of wetlands along the ‘Western-Greek Migration Route’ can result in a critical lack of suitable stopover sites for migrating birds Obj. 1 Screening legal instruments and their implementation in the Greek legislation (literature study) Obj. 2 Screening wetlands along the ‘Western-Greek Migration Route’ p. 9

  10. Hypothesis and objectives Introduction Hypothesisand objectives Materials and methods Results Conclusions Future Obj. 1 Screening legal instruments and their implementation in the Greek legislation (liturature study, in parallel with Bazigou) • Conclusions • Legislation to protect migrating birds and wetlands along the ‘Western-Greek Migration Route’ is not sufficient and the one existing is not implemented [Bazigou, 2007]. • No control to prevent ecological change from occuring in wetlands p. 10

  11. Hypothesis and objectives Introduction Hypothesisand objectives Materials and methods Results Conclusions Future Obj. 2 Screening wetlands along the ‘Western-Greek Migration Route’ 1. Inventory (including small wetlands) • Localisation • Protection or legal status (IBA, RAMSAR, Natura 2000,...) or other (including ‘none’) • Characteristics • Importance to migrating waterfowl 2. Monitoring ecological change in wetlands • Types of ecological change that can be monitored • Technique for change detection in wetland area p. 11

  12. Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Monitoring ecological change in wetlands 1. Monitoring schedule (MedWet) The Mediterranean Initiative of the Ramsar Convention on Wetlands p. 12

  13. Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Monitoring ecological change in wetlands 1. Monitoring schedule (MedWet) The Mediterranean Initiative of the Ramsar Convention on Wetlands p. 13

  14. Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Monitoring ecological change in wetlands 2. Method: Spatio-temporal change detection • Detection of changes in wetland area • Spatial indicator: surface area of habitat types • Using remote sensing and GIS (satellite images) Post-classification change detection using satellite images • Hybrid Unsupervised-Supervised Classification (1977, 1989, 2000) [Tağil, 2007] • Post-classification comparison • Data comparison • Matrix analyses (Raster GIS) (1977-1989, 1989-2000, 1977-2000) [Haack, 2006] p. 14

  15. Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Monitoring ecological change in wetlands 3. Material: Landsat imagery • Available since 1972 till 2003 = historical database • Medium resolution (30 – 80 m2) • Scene size 185 x 185 km2 Global Orthorectified Landsat Data Set (NASA) • Orthorectified and co-registered Landsat images • Landsat MSS (1970s), TM (1990s), ETM+ (ca 2000) • High spatial accuracy • Freely available from GLCF [http://glcf.umiacs.umd.edu/index.shtml] p. 15 [http://glcf.umiacs.umd.edu/index.shtml]

  16. Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Landsat imagery Global Orthorectified Landsat Data Set 1 (1972) 2 (1975) 3 (1978) 4 (1982) 5 (1984) 6 (failed) 7 (1999) [ University of Maryland, 2004] [Source: Tucker et al., 2004] p. 16

  17. Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Monitoring ecological change in wetlands 4. Pilot study: Study area: Logarou Lagoon Amvrakikos Gulf Ramsar, IBA, Natura 2000 (National park) Logarou Lagoon 4900 ha Blue/Green/Near-InfraRed False colour composites Landsat ETM+ 2000-08-22 [ http://ngm.nationalgeographic.com/map-machine] p. 17

  18. Results Materials and methods Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Habitat map ‘85 Aerial photo 85 Unsupervised Supervised Signature editing Asigning classes (208) 20 classes 8 classes Classification schedule (MedWet-guide, field campaign, aerial photos ‘45-’85, satellite imagery, Life Habitat map) MedWet-guide 1977 1977 Selected classes 1. Hybrid Unsupervised-Supervised Classification p. 18

  19. Results Introduction Hypothesis and objectives Materials and methods Results Conclusions Future 1977 2000 1989 2. Post-classification comparison Supervised classified images p. 19

  20. Results Introduction Hypothesis and objectives Materials and methods Results Conclusions Future 2. Post-classification comparison 1977 1989 2000 p. 20

  21. Results Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Black = change Logarou Lagoon Change Detection Matrix 1977-2000 2. Post-classification comparison Matrix analyses: 1977-2000 p. 21

  22. Results Introduction Hypothesis and objectives Materials and methods Results Conclusions Future 2. Post-classification comparison  Dynamism of wetland system  Ecological change has been monitored p. 22

  23. Results Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Lake 1 The lake is full of rubbish.The panel states (in Greek) ‘Garbage disposal is prohibited’ [Source: Nico Koedam, 19/04/2007] Lake 3 The lake is full of dumped tyres [Source: Nico Koedam, 19/04/2007] Blue/Green/Near-InfraRed False colour composite Inventory: small wetlands p. 23

  24. Conclusions Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Obj. 1 Screening legal instruments and their implementation in the Greek legislation (liturature study, in parallel with Bazigou) 1. Legislation to protect migrating birds and wetlands along the ‘Western-Greek Migration Route’ is not sufficient [Bazigou, 2007]. 2. The legislation existing is not implemented [Bazigou, 2007]. 3. No control to prevent ecological change from occurring in wetlands. p. 24

  25. Conclusions Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Obj. 2 Screening wetlands along the ‘Western-Greek Migration Route’ 1. Inventory • Localisation of all wetlands possible, including small wetlands 2. Monitoring ecological change in wetlands • Technique for detecting change in wetland area has been designed • Pilot study: change can be detected using this method • Cost- and labour-effective, reliable for its purpose and feasible p. 25

  26. Conclusions Introduction Hypothesis and objectives Materials and methods Results Conclusions Future Natura 2000 newsletter Lack of political will [Bazigou, 2007] The possibility to improve is there Why is Greece not doing more? THERE IS NO EXCUSE p. 26

  27. Future Recommendations Introduction Hypothesis and objectives Materials and methods Results Conclusions Future • Further Screening wetlands along the ‘Western-Greek Migration Route’, using the images of the Global Orthorectified Landsat Data Set • Creating inventory • Post-classification change detection • More detailed ground truthing • Investigating biological impact of change • Other ecological changes of wetlands, e.g. pollution p. 27

  28. Thank you for your attention… Sheep: “I’m afraid you’re in the wrong place. In winter, swallows should be in Africa.“ Bird: “No, YOU are in the wrong place. I’m not a swallow, I’m a penguin.“ p. 28

More Related