An approach for identifying the causes of benthic degradation in Chesapeake Bay |
| |
Authors: | Christman Cory S Dauer Daniel M |
| |
Affiliation: | (1) Department of Biological Sciences, Old Dominion University, Norfolk, VA, 23529 |
| |
Abstract: | We developed an index to differentiate between low dissolved oxygen effects and sediment contamination effects for sites classified as degraded by the Chesapeake Bay Benthic Index of Biotic Integrity (B-IBI), using discriminant analysis. We tested 126 metrics for differences between sites with low dissolved oxygen and sites with contaminated sediments. A total of 16 benthic community metrics met the variable selection criteria and were used to develop a discriminant function that classified degraded sites into one of two stress groups. The resulting discriminant function correctly classified 77% of the low dissolved oxygen sites and 80% of the contaminated sites in the validation data. |
| |
Keywords: | discriminant analysis index of biotic integrity Chesapeake Bay sediment contamination low dissolved oxygen macrobenthos |
本文献已被 PubMed SpringerLink 等数据库收录! |