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Martin Wyttenbach, master student, Zentr. Naturmanagement ZHAW Assessing the spatio-temporal pattern of winter sports activities to minimize disturbance.

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Presentation on theme: "Martin Wyttenbach, master student, Zentr. Naturmanagement ZHAW Assessing the spatio-temporal pattern of winter sports activities to minimize disturbance."— Presentation transcript:

1 Martin Wyttenbach, master student, Zentr. Naturmanagement ZHAW Assessing the spatio-temporal pattern of winter sports activities to minimize disturbance in capercaillie habitats Move workshop, 27.10.2011 Keywords: GPS logging, backcountry skiing, snowshoeing, Tetrao urogallus, wildlife management, visitor management, recreation ecology, human wildlife conflict, Biosfera Val Müstair

2 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 Bild tiere im winter Info wildtiere 2 Bild: Roland Graf Disturbance of capercaillie habitats

3 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 Problems Assessing spatial disturbance effects of wintersport activities on capercaillies Identify and quantify the capercaillie habitats affected by backcountry skiers and snowshoers Find a measure to describe disturbance intensity -> suggest management actions 3

4 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 GPS-Logging Skitourenrouten Val Müstair Skitouren val müstair fokus piz daint 4 Piz Dora Piz Turettas Karte: Swisstopo 1:200`000 Tschierv Start Touren 2009 Start Touren 2010

5 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 5 Piz Dora Ascent Piz Dora Karte: Swisstopo 1:200`000

6 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 Spatial analysis data GPS tracks (ski-/snowboard- and snowshoetours) and official routes were used as vector line data All other data were converted into raster (cell size 25 m) buffer of 100 m around GPS tracks (capercaillie flushing distance) 6

7 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 1. Line density (simple density) Density of GPS tracks within a range of 100 m for each raster cell (km/km2). A straight crossing through the density extent of one raster cell is 200 m (equalling a density of 0.2 km / 0.0314 km2). Calculation of crossings Total numer of crossings per raster cell (n) n = (L1 + L2) D 7 Spatial analysis D L1: 170 m L2: 230 m D: 200m

8 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 2. Counting Translation of relative densities into absolute numbers (combination of GPS tracking and data from camera traps) Camera traps: 69 recreationalists per week (average count) dataset: 70 GPS tracks passing through the camera trap location -> density from GPS track data used in the analysis represents an average number of crossings per week 8 Spatial analysis

9 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 3. Classification 1) not affected = no crossings at all; 2) low = 1 to 3 (includes single trips with roaming patterns); 3) medium = 4 to 24 (4) intense = 25 and more. 9 Spatial analysis

10 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 10 Overall densities Karte: Swisstopo 1:200`000

11 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 11 Capercaillie core habitat

12 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 Improvements Trips as vector point data (points per area as a measure for disturbance) Seperate class for brakes -> method to define brakes Differenciate ascent and descent Further methods to assess spatio-temporal use by recreationalists? Analysis of behavior refering to official routes and activitys? 12

13 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 Thank you for your attention! 13

14 mafreina Management Freizeit Natur Move Workshop Zürich, 27.10. 2011 Questions Further methods to assess spatio-temporal use by recreationalists? Precision of classification; expl: low 1 – 3 crossings including roaming patterns -> identification and classification of roaming patterns Analysis of behavior refering to official routes and activitys? 14


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