Characteristics within and around stopover wetlands used by migratory shorebirds: Is the neighborhood important?

The condor

Gene Albanese¹ 

关键词: habitat use;    landscape context;    migration;    prairie wetlands;    shorebird;    Southern Great Plains;    zero-inflated models;   

DOI  :  10.1650/CONDOR-14-166.1

学科分类：动物科学

来源: Central Ornithology Publication Office

【 摘 要 】

ABSTRACT Wetland stopover use by migratory shorebirds is concurrently influenced by habitat characteristics within a stopover site and characteristics related to the broader context surrounding the stopover site. To conserve wetland habitats essential for shorebird migration through the interior of North America, we need to understand how these dual scales influence stopover use. We surveyed >14,000 wetlands within 10 broad-scale landscapes in north-central Oklahoma from 2007 through 2009 to determine how characteristics within (intra) and surrounding (context) wetlands influence the density and species richness of migrating shorebirds at stopover sites. We used zero-inflated modeling and an information theoretic framework to separately examine and then compare the relative importance of intra-habitat variables and habitat context variables in explaining use of stopovers. We observed 38,288 migratory shorebirds of 29 species. Shorebirds were least likely to occur in isolated, small, steep-sided wetland ha...

【 授权许可】

CC BY