Appendix A: True Color Ortho-Photography and Classified ... · This appendix contains true color...
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SEPTEMBER 2013 BACKGROUND This appendix contains true color ortho-photography (EarthData International 2004) and classified marsh cover maps for the 10 marsh sites studied in the main paper, “Alameda Song Sparrow Abundance Related to Salt Marsh Vegetation Patch Size and Shape Metrics Quantified from Remote Sensing Imagery." 1. Cogswell Marsh 2. Whale's Tail Marsh 3. Jarvis Landing Marsh 4. Dumbarton Point 5. Palo Alto Baylands 6. Faber Tract 7. Laumeister Tract 8. Cooley Landing Backshore 9. Ravenswood Slough 10. Eastern Bair Island The goal of the study was to identify the relationship between Alameda song sparrow (Melospiza melo- dia pusillula) abundance (expressed as bird density index) and the planimetric shapes exhibited by differ- ent types of marsh surface cover. As such, the classi- fied maps needed to capture the boundaries between adjacent marsh surface types but did not need to accurately identify the specific type of marsh cover at any given location. Cover composition was not ana- lyzed as a contributing variable (covariate). The only metric of accuracy that was relevant to the methods and results of this study was whether the boundar- ies between classes mapped as different colors in the following maps reflected true texture and boundaries among adjacent cover types. It was mathematically immaterial to this study’s analysis and results wheth- er, for example, all purple areas in the following maps (Class 4, loosely identified as Grindelia stricta or Bolboschoenus maritimus) were in fact occupied by these species, as long as the boundaries between purple and non-purple classes were reasonable. REFERENCE EarthData International. 2004. ADS-40 digital imagery acquisition of San Francisco–Oakland, California. Frederick (MD): EarthData International of Maryland, LLC. Appendix A: True Color Ortho-Photography and Classified Marsh Cover Maps for Ten Marsh Study Sites Kevan B. Moffett* 1 , Jaslyn Law 2 , Steven M. Gorelick 3 , Nadav Nur 4 , and Julian K. Wood 4 * Corresponding author: [email protected] 1 Department of Geological Sciences, University of Texas at Austin, Austin, TX USA 2 Earth Systems Program, Stanford University, Stanford, CA USA 3 Department of Environmental Earth System Science, Stanford University, Stanford, CA USA 4 Point Blue Conservation Science, Petaluma, CA USA
Transcript of Appendix A: True Color Ortho-Photography and Classified ... · This appendix contains true color...
SEPTEMBER 2013
BACKGROUND
This appendix contains true color ortho-photography (EarthData International 2004) and classified marsh cover maps for the 10 marsh sites studied in the main paper, “Alameda Song Sparrow Abundance Related to Salt Marsh Vegetation Patch Size and Shape Metrics Quantified from Remote Sensing Imagery."
1. Cogswell Marsh
2. Whale's Tail Marsh
3. Jarvis Landing Marsh
4. Dumbarton Point
5. Palo Alto Baylands
6. Faber Tract
7. Laumeister Tract
8. Cooley Landing Backshore
9. Ravenswood Slough
10. Eastern Bair Island
The goal of the study was to identify the relationship between Alameda song sparrow (Melospiza melo-dia pusillula) abundance (expressed as bird density index) and the planimetric shapes exhibited by differ-
ent types of marsh surface cover. As such, the classi-fied maps needed to capture the boundaries between adjacent marsh surface types but did not need to accurately identify the specific type of marsh cover at any given location. Cover composition was not ana-lyzed as a contributing variable (covariate). The only metric of accuracy that was relevant to the methods and results of this study was whether the boundar-ies between classes mapped as different colors in the following maps reflected true texture and boundaries among adjacent cover types. It was mathematically immaterial to this study’s analysis and results wheth-er, for example, all purple areas in the following maps (Class 4, loosely identified as Grindelia stricta or Bolboschoenus maritimus) were in fact occupied by these species, as long as the boundaries between purple and non-purple classes were reasonable.
REFERENCE
EarthData International. 2004. ADS-40 digital imagery acquisition of San Francisco –Oakland, California. Frederick (MD): EarthData International of Maryland, LLC.
Appendix A: True Color Ortho-Photography and Classified Marsh Cover Maps for Ten Marsh Study Sites Kevan B. Moffett*1, Jaslyn Law2, Steven M. Gorelick3, Nadav Nur4, and Julian K. Wood4
* Corresponding author: [email protected]
1 Department of Geological Sciences, University of Texas at Austin, Austin, TX USA
2 Earth Systems Program, Stanford University, Stanford, CA USA
3 Department of Environmental Earth System Science, Stanford University, Stanford, CA USA
4 Point Blue Conservation Science, Petaluma, CA USA
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SAN FRANCISCO ESTUARY & WATERSHED SCIENCE
1. Cogswell Marsh (37.635329 N, 122.148173 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
/
Figure 1 Cogswell Marsh
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2. Whale's Tail (37.600483 N, 122.143736 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
/
0 500m
Figure 2 Whale's Tail
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SAN FRANCISCO ESTUARY & WATERSHED SCIENCE
3. Jarvis Landing (37.527835 N, 122.06921 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
/
0 500m
Figure 3 Jarvis Landing
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Figure 4 Dumbarton Point
4. Dumbarton Point (37.506393 N, 122.094446 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
/
0 500m
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SAN FRANCISCO ESTUARY & WATERSHED SCIENCE
Figure 5 Palo Alto Baylands
5. Palo Alto Baylands (37.460806 N, 122.106446 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
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0 500m
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Figure 6 Faber Tract
6. Faber Tract (37.465657 N, 122.122705 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
0 500m
/
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SAN FRANCISCO ESTUARY & WATERSHED SCIENCE
Figure 7 Laumeister Tract
7. Laumeister Tract (37.471505 N, 122.124306 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
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0 500m
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Figure 8 Cooley Landing Backshore
8. Cooley Landing Backshore (37.482426 N, 122.13007 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
/
0 500m
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SAN FRANCISCO ESTUARY & WATERSHED SCIENCE
9. Ravenswood Slough (37.493333 N, 122.150572 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
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0 500m
Figure 9 Ravenswood Slough
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10. Eastern Bair Island (37.526613 N, 122.211672 W)
!( Observation AreasFrankenia salina, Jaumea carnosa, Distichlis spicataSpartina spp. (mostly Spartina foliosa)Sarcocornia pacifica
Grindelia stricta or Bolboschoenus maritimuslevees, wrack, structures, dark shadowswater
/
0 500m
Figure 10 Eastern Blair Island
