Graphics from the BBS Analysis

This page was created to host graphics generated during an analysis of the survey data from the North American Breeding Bird Suvery.

Metadata Codes

Individual Species Counts

Species Richness Visualizations

Plots of species richness and related variables only (i.e. not species richness and NLCD values).

Distributions of Species Richness Estimators

Species Richness by State

Unless otherwise noted, "species richness" now refers to the first-order jackknife estimates.

Species Richness by Bird Conservation Region

Species Richness by USGS Strata

Species Richness and Latitude

NLCD Visualization

Visualizations of data from 1992 National Land Cover Dataset attributes within designated buffer areas around the BBS routes. Two buffer sizes are used, 1 km and 5 km. Land cover characteristics are recorded as percent cover within the buffers and as numbers of cells within the buffers. Because the buffers are not all of the same size, measures of percent cover are more robust. Land use is defined according to two schemes: the original NLCD classification and an aggregate classification system designed by Napoletano and Pijanowski.

NLCD Classification

Plots of land use concentrations based on NLCD classifications

Kernel Density Plots

Quantile-Quantile Plots

Box Plots

Violin Plots

Napoletano-Pijanowski Classification

Plots of land use data with NLCD classifications aggregated into more general classes.

Kernel Density Plots

Quantile-Quantile Plots

Box Plots

Violin Plots

Species Richness and Land Use

Scatter plots

Loess smoothing

Tables of Records


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Creative Commons License
Graphics from the BBS Analysis by Brian Napoletano is licensed under a Creative Commons Attribution 3.0 Unported License.