作者: Douglas H. Johnson , James P. Gibbs , Mark Herzog , Socheata Lor , Neal D. Niemuth
DOI: 10.1675/063.032.0201
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摘要: Abstract. A framework for a sampling plan monitoring marshbird populations in the contiguous 48 states is proposed here. The universe breeding habitat (i.e. wetlands) potentially used by marshbirds. Selection protocols would be implemented within each of large geographical strata, such as Bird Conservation Regions. Site selection will done using two-stage cluster sample. Primary units (PSUs) land areas, legal townships, and selected procedure systematic sampling. Secondary (SSUs) wetlands or portions PSUs. SSUs randomized spatially balanced procedure. For analysis, use variety methods means increasing confidence conclusions that may reached encouraged. Additional effort required to work out details implement plan.