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Maps, Models, and Tools for Bird Conservation Planning

Modeling Avian Abundance: Results - Red-headed Woodpecker

These results are available in:

Thogmartin, W. E., and M. G. Knutson. 2007. Scaling local species-habitat relations to the larger landscape with a hierarchical spatial count model. Landscape Ecology 22:61–75.

Modeling Avian Abundance: Results
Avian Species-of-Concern in the Prairie-Hardwood Transition Ecoregion (Bird Conservation Region 23)

Red-headed Woodpecker
Melanerpes erythrocephalus

Conservation Estate Portfolio for the Red-headed Woodpecker (Melanerpes erythrocephalus)

Conservation Estate Portfolio for the Red-headed Woodpecker (Melanerpes erythrocephalus)

 Red-headed Woodpecker Predicted Relative Abundance Map


Red-headed Woodpecker Predicted Relative Abundance Map (map - click for larger scale)
Red-headed Woodpecker

Red-headed Woodpecker
AOU Code RHWO
Habitat Association savannah-woodland
Nest Type and Location cavity
Migration Status Short distance
Conservation Score 24

Red-headed Woodpecker Predicted Relative Abundance Map
This map indicates predicted relative species abundance. The predicted count of any cell in the map represents the expected count if a Breeding Bird Survey route were centered on that cell.

Red-headed Woodpecker Predicted Relative Abundance Map
 

Red-headed Woodpecker Averaged Habitat Model

Explanatory Variable Scale (m) Median 95% LCL 95% UCL Variable Importance
Grassland Composition (%)
1,000
0.285
0.280
0.289
0.263
Grassland Composition (%)
10,000
0.329
0.324
0.333
0.737
Urban Grass Composition (%)
100
0.130
0.127
0.133
0.263
Deciduous Forest Composition (%)
10,000
0.298
0.291
0.304
0.737
Row Crop Composition (%)
100
0.484
0.479
0.489
0.263
Row Crop Composition (%)
10,000
0.375
0.369
0.381
0.737
River Density (km/km2)
10,000
-0.164
-0.167
-0.160
0.737
Patchy Forest Composition (%)
10,000
-0.264
-0.268
-0.259
0.737
Perforated Forest Composition (%)
100
0.134
0.130
0.138
0.263
Mean Static Wetness Index (scales between 1 [dry] to 19 [moist])
100
-0.331
-0.337
-0.326
0.263
Normal CAR

 
-0.221
-0.224
-0.217
1

K-L Best Subset Models

Model Explanatory Variable Scale Parameters DIC ΔDIC wi Evidence Ratios
1
 Grassland10,000, Deciduous Forest10,000, Row Crop10,000, River Density10,000, Patchy Forest10,000
416.3
5256.25
0
0.668
0.36
2
 Grassland100, Urban Grass100, Row Crop100, Perforated Forest100, Wetness100
412.5
5258.31
2.06
0.238
1.00
Null
  
420.0
5265.69
9.44
0.006
112.168
Parameters: Effective number of parameters
DIC: Deviance Information Criterion
ΔDIC: Difference in deviance between model and best model
wi: Model weight
Evidence Ratio: Ratio of model i relative to the best model
 

Red-headed Woodpecker Population Trend Graph

Red-headed Woodpecker Population Trend Graph


* Partners-in-Flight Conservation score for PIF16
(171 KB .pdf file - requires Acrobat Reader)  

Scores range between 5 and 35, with higher scores signifying greater conservation concern. Each species is of management concern because of their rarity, declining abundance, or habitat specificity (http://www.blm.gov/wildlife/pl_16sum.htm).

Content manager: Wayne Thogmartin

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Page Last Modified: October 2, 2007

July 31, 2007