Factors Influencing Snowy Plover Nest Survival on Ocean-Fronting Beaches in Coastal Northern California

摘要: Abstract. Selection of a nest site that affords camouflage eggs or incubating adults is thought to be strongly influenced by predation, especially for ground-nesting birds. Data from 115 Snowy Plover (Charadrius nivosus) nests were used model relationships between survival, habitat characteristics, predator activity and human on four sandy, ocean-fronting beaches in coastal northern California 2007–2009. daily survival was higher at two southern sites (South Spit range = 0.98–0.99; Eel River Wildlife Area 0.91–0.96) compared with (Mad Beach 0.77–0.88; Clam 0.79–0.89) where appreciably higher. Nest positively related debris heterogeneity negatively the amount near nest, but these weaker than site-level effect. Although plovers select among cryptic sparsely vegetated areas, restoration creates enhan...