ICPRB Chesapeake Basin-wide Index of Biotic Integrity (Chessie BIBI)

<p><b>Open the Data Resource:</b> <a href='https://www.potomacriver.org/focus-areas/aquatic-life/macroinvertebrates/chessie-bibi-index-for-streams/' rel='nofollow ugc'>https://www.potomacriver.org/focus-areas/aquatic-life/macroinvertebrates/chessie-bibi-index-for-streams/</a></p>
<p>The Chesapeake Basin-wide Index of Biotic Integrity (Chessie BIBI) is a multi-metric index of biological health for freshwater streams and small, wadeable rivers in the Chesapeake Bay watershed. It is composed of family-level macroinvertebrate metrics (indicators) that discriminate strongly between high quality and degraded stream conditions in each of the twelve bioregions in the watershed.</p>
<p>Data from over 25,000 macroinvertebrate samples collected and counted by state, federal and local agencies and citizen groups were merged into a common database structure, normalized and used to develop the index. Crucial to the index’s success was the involvement of several technical advisory groups comprised of regional experts and resource managers.
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<p>The Chessie BIBI map shows the family-level, bioregion-scaled Chessie BIBI results by HUC12-bioregion spatial unit for the Chesapeake Bay watershed from 2000 through 2017. A colored HUC12-bioregion unit has two or more sampling locations and the color reflects the average result. A colored dot indicates only one sampling location occurred in the unit. The unsampled units are left blank (white).</p>