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A Reassessment of the Benthic Macrofaunal Community and Sediment Quality Conditions in Clam Bayou, Pinellas County, Florida: 2008 Vs

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A Reassessment of the Benthic Macrofaunal Community and Sediment Quality Conditions in Clam Bayou, Pinellas County, Florida: 2008 Vs A Reassessment of the Benthic Macrofaunal Community and Sediment Quality Conditions in Clam Bayou, Pinellas County, Florida: 2008 vs. 2016 David J. Karlen, Ph.D.*; Thomas L. Dix, Ph. D.; Barbara K. Goetting; Sara E. Markham; Kevin W. Campbell; Joette M. Jernigan Environmental Protection Commission of Hillsborough County Data Report prepared for: Florida Department of Environmental Protection & Tampa Bay Estuary Program January 2017 *Author contact: [email protected] i Acknowledgements The Pinellas County Public Works Department, Environmental Management Division staff collected the benthic samples and field data for this study. The PCDEM personnel involved with the field work were: Melissa Harrison, Robert McWilliams, Mark Flock, Peggy Morgan, Conor Petren, Robin Barnes, and Julie Vogel. Laboratory processing of the silt/clay and benthic macrofauna samples was done by the Environmental Protection Commission of Hillsborough County. Anthony Chacour, Julie Christian, Lyndsey Grossmann, Lauren Lamonica, and Kirsti Martinez (EPCHC lab staff) assisted in the sample sorting and data entry. Sample analysis for sediment contaminants was conducted by the EPCHC’s chemistry lab under the direction of Joe Barron. Lab personnel involved were Amanda Weronik (metals), Lukasz Talalaj (pesticides, PCBs and PAHs), Kevin McCarthy (TOC) and Dawn Jaspard (Data Management). Funding was provided by the Tampa Bay Estuary Program as part of the annual bay-wide Tampa Bay Benthic Monitoring Program. i Table of Contents Acknowledgements ........................................................................................................................................ i Table of Contents .......................................................................................................................................... ii List of Figures .............................................................................................................................................. iv List of Tables ............................................................................................................................................... vi Introduction ................................................................................................................................................... 1 Materials and Methods .................................................................................................................................. 1 Site Selection ............................................................................................................................................ 1 Field Collection ......................................................................................................................................... 1 Sediment Chemistry .............................................................................................................................. 3 Laboratory Procedures .............................................................................................................................. 3 Field data ............................................................................................................................................... 3 Sediment Chemistry .............................................................................................................................. 3 Benthic Community Analysis ............................................................................................................... 3 Data Analysis ............................................................................................................................................ 4 Data Categorization .............................................................................................................................. 4 Univariate Statistical Analysis .............................................................................................................. 4 Multivariate Statistical Analysis and Benthic Community Indices ...................................................... 4 Spatial and Graphical Analysis ............................................................................................................. 4 Results ........................................................................................................................................................... 5 Physical Parameters .................................................................................................................................. 5 Benthic Macrofaunal Community Analysis ............................................................................................ 11 Comparison on Biological and Physical Variables. ................................................................................ 21 Sediment Contaminants .......................................................................................................................... 21 Discussion and Conclusions ....................................................................................................................... 49 Literature Cited ........................................................................................................................................... 51 ii Appendix A: Clam Bayou 2008 & 2016 Benthic Macrofaunal Data ......................................................... 53 Appendix B: SWFWMD Clam Bayou Restoration Project Map ................................................................ 61 iii List of Figures Figure 1. TBEP 2016 Clam Bayou sampling locations. .............................................................................. 2 Figure 2. Clam Bayou 2008 vs. 2016 sample depth. ................................................................................... 7 Figure 3. Clam Bayou 2008 vs. 2016 bottom temperature. .......................................................................... 7 Figure 4. Clam Bayou 2008 vs. 2016 bottom salinities. .............................................................................. 8 Figure 5. Clam Bayou 2008 vs. 2016 bottom pH. ....................................................................................... 8 Figure 6. Clam Bayou 2008 vs. 2016 bottom dissolved oxygen. ................................................................ 9 Figure 7. Clam Bayou 2008 vs. 2016 bottom dissolved oxygen saturation. ................................................ 9 Figure 8. Clam Bayou 2008 vs. 2016 sediment percent silt + clay. ........................................................... 10 Figure 9. Calm Bayou 2016 total organic carbon. ...................................................................................... 10 Figure 10. Clam Bayou 2008 vs. 2016 benthic species richness. .............................................................. 13 Figure 11. Clam Bayou 2008 vs. 2016 benthic abundance. ....................................................................... 13 Figure 12. Clam Bayou 2008 vs. 2016 Shannon diversity index. .............................................................. 14 Figure 13. Clam Bayou 2008 vs 2016 Tampa Bay Benthic Index ............................................................. 14 Figure 14. Bray-Curtis Similarity dendrogram of 2016 TBEP Clam Bayou sampling sites. .................... 18 Figure 15. Bray-Curtis Similarity dendrogram of 2008 TBEP Clam Bayou sampling sites. .................... 19 Figure 16. Bray-Curtis Similarity dendrogram of combined 2008 and 2016 Clam Bayou sampling sites. 20 Figure 17. Clam Bayou 2008 and 2016 metals:aluminum regressions. ...................................................... 25 Figure 18. Clam Bayou 2008 vs. 2016 sediment chromium concentrations. ............................................. 26 Figure 19. Clam Bayou 2008 vs. 2016 sediment copper concentrations. .................................................. 26 Figure 20. Clam Bayou 2008 vs. 2016 sediment lead concentrations. ....................................................... 27 Figure 21. Clam Bayou 2008 vs. 2016 sediment zinc concentrations. ....................................................... 27 Figure 22. Clam Bayou 2008 vs. 2016 sediment Lindane concentrations. ................................................ 31 Figure 23. Clam Bayou 2008 vs. 2016 sediment Dieldrin concentrations. ................................................ 31 Figure 24. Clam Bayou 2008 vs. 2016 sediment p,p’-DDD concentrations. ............................................. 32 Figure 25. Clam Bayou 2008 vs. 2016 sediment p,p’-DDE concentrations. ............................................. 32 iv Figure 26. Clam Bayou 2008 vs. 2016 sediment p,p’-DDT concentrations. ............................................. 33 Figure 27. Clam Bayou 2008 vs. 2016 sediment total DDT concentrations. ............................................. 33 Figure 28. Clam Bayou 2008 vs. 2016 sediment total Chlordane concentrations. .................................... 34 Figure 29. Clam Bayou 2008 vs. 2016 sediment total PCBs concentrations. ............................................ 34 Figure 30. Clam Bayou 2008 vs. 2016 sediment Acenaphthene concentrations ........................................ 36 Figure 31. Clam Bayou 2008 vs. 2016 sediment Acenaphthylene concentrations. .................................... 36 Figure 32. Clam Bayou 2008 vs. 2016 sediment Anthracene concentrations. ............................................ 37 Figure 33. Clam Bayou 2008 vs. 2016 sediment Fluorene concentrations ................................................
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