Model averaged parameter estimates, standard errors (SE), lower 95% confidence limits (LCL), upper 95% confidence limits (UCL), and standardized odds ratios for variables from 20 candidate models we used to examine potential influences on nest-site selection of Piping Plovers at Lake Sakakawea.

<p>Variables with 95% confidence limits that do not overlap 0 are depicted in bold.</p>a<p>Percent coverage of silt in substrate at site.</p>b<p>Percent coverage of pebble in substrate.</p>c<p>Site measurement.</p>d<p>Percent coverage of gravel in substrate.</p>e<p>Presence or absence of a cobble.</p>f<p>Percent bare substrate obstruction (vegetation+leaf litter+small debris).</p>g<p>Distance (m) to shoreline of Lake Sakakawea.</p>h<p>Relative elevation (m) of the nest above the pool level at initiation.</p>i<p>Mean of 4 measurements taken 3 m from the site.</p>j<p>Mean of 4 measurements taken 10 m from the site.</p

Median and 10^th and 90^th percentiles of nest and random sites for variables that influence nest-site selection of Piping Plovers on Lake Sakakawea.

a<p>Percent coverage of silt in substrate at site.</p>b<p>Percent coverage of gravel in substrate at site.</p>c<p>Presence or absence of a cobble.</p>d<p>Relative elevation of the nest above the pool level at initiation.</p>e<p>Slope within 1 m of the site.</p>f<p>Percent bare substrate obstruction (vegetation+leaf litter+small debris).</p>g<p>Slope within 3 m of the site.</p>h<p>Percent coverage of gravel in substrate 10 m from the site.</p

Mean and standard deviation (SD) and 25^th, 50^th, 75^th, 90^th, and 100^th percentiles for variables of available Piping Plover nesting habitat at Lake Sakakawea (SAK), sandbars of the Missouri River (MR), and the Atlantic Coast (AC).

a<p>Percent coverage.</p>b<p>Sherfy et al. 2012.</p>c<p>Percent coverage of pebble, gravel, and cobble.</p>d<p>Cohen et al. 2008.</p>e<p>Not reported.</p

The most supported 5 of 20 models evaluated to examine factors that influence intra-territory nest-site selection of Piping Plovers at Lake Sakakawea, North Dakota, including number of parameters (K), Akaike's Information Criterion for small sample size (AIC_c), increase over the lowest AIC_c (ΔAIC_c), and Akaike model weight (<i>w</i>_i).

a<p>Percent coverage of silt in substrate at site.</p>b<p>Percent coverage of gravel in substrate.</p>c<p>Site measurement.</p>d<p>Presence or absence of a cobble.</p>e<p>Distance (m) to shoreline of Lake Sakakawea.</p>f<p>Relative elevation (m) of the nest above the pool level at initiation.</p>g<p>Percent bare substrate obstruction (vegetation+leaf litter+small debris).</p>h<p>Mean of 4 measurements taken 3 m from the site.</p>i<p>Mean of 4 measurements taken 10 m from the site.</p>j<p>Percent coverage of pebble in substrate.</p

Lake Sakakawea study area.

<p>Map of North Dakota depicting our study area (shaded in gray) at Lake Sakakawea and an example of our segmentation of our study area.</p