|
Activity Number:
|
264
|
|
Type:
|
Topic Contributed
|
|
Date/Time:
|
Tuesday, August 4, 2009 : 8:30 AM to 10:20 AM
|
|
Sponsor:
|
Section on Statistics and the Environment
|
| Abstract - #303813 |
|
Title:
|
Spatial Design for the North American Breeding Bird Survey (BBS): An Integrated Approach
|
|
Author(s):
|
Emily H. Griffith*+ and J. Andrew Royle
|
|
Companies:
|
U.S. Geological Survey and U.S. Geological Survey
|
|
Address:
|
Patuxent Wildlife Research Center, Laurel, MD, 20708,
|
|
Keywords:
|
North American Breeding Bird Survey ; monitoring ; optimization ; sample allocation ; spatial design ; exchange algorithm
|
|
Abstract:
|
The North American Breeding Bird Survey (BBS) is a large continental-scale survey used to estimate population trends of >420 migratory bird species that breed in North America. The BBS is the main source of large-scale information about dozens of threatened or rare species. Motivated by the ad hoc sampling design and the model-based analysis, we devise a design framework integrating these two elements. We conceptualize a formal approach allowing evaluation of the existing design relative to potential modifications involving reallocation of routes or geographically targeted sampling. Key technical issues addressed are spatial variance heterogeneity due to the distribution of species across their range, the highly multivariate nature of the problem requiring simultaneous consideration of many species, the geographical size and scope of sampling routes, and feasibility of optimization.
|
