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Commonwealth of Virginia Flow-Ecology

Commonwealth of Virginia Flow-Ecology. Project Meeting VDEQ June 23, 2011. Data Inventory. Data Sources. INSTAR DGIF MAHA MAIA NAWQA DCR TN ProbMon (Genus and Family). Data. Compiled Biological Fish Benthic Macroinvertebrates Available Habitat Many different forms

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Commonwealth of Virginia Flow-Ecology

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  1. Commonwealth of VirginiaFlow-Ecology Project Meeting VDEQ June 23, 2011

  2. Data Inventory

  3. Data Sources • INSTAR • DGIF • MAHA • MAIA • NAWQA • DCR • TN • ProbMon (Genus and Family)

  4. Data • Compiled • Biological • Fish • Benthic Macroinvertebrates • Available • Habitat • Many different forms • RBP visual • EMAP style

  5. Criteria for Biological Data Benthos • Spatial/temporal distribution among classes • Community level (any targeted species analyses separate) • Genus/species (with OTU considerations) • Family level OK, separate analyses • Relative abundance – fractions of sample processed not tracked to give abundances (LIFE index on actual abundance binned into log categories) • Richness metrics – LOE issue, mainly with NAWQA (resampling)

  6. Criteria for Biological Data Fish • Spatial/temporal distribution among classes • Community level (any targeted species analyses separate) • Some methods issues or targeted sampling • Most species level - consistent • Real abundances

  7. Data Issues • Points outside of VA • Can filter on state (based on GIS using supplied coordinates) • Different levels of effort • Fish • Unknown • gear, reach length, etc. • Benthos • Taxonomy • Subsample Size • Methods • DCR, targeted • NAWQA, subsampled but correction factor unknown • Presence/Absence vs. Abundance vs. Unknown • Missing dates

  8. Benthos – data comparability • Taxonomy • All datasets are primarily genus/species • Percent of taxa • 50-60% genus IDs • 10-30% species IDs • Subsample size • Primarily 300 organisms • NAWQA is recorded as total abundance. Need subsample percent.

  9. Non-Community Methods • Excluded targeted and presence/absence data • Fish • Total individuals = 0 • Single taxon • American eel, Atlantic sturgeon, northern snakehead • Benthos • Total individuals = 0 • Additional samples where number of individuals equaled number of taxa were not excluded.

  10. Many PM_Gen came out as PM_Fam (same StationID)

  11. Number of Samples • Benthos • 9,171 • Primary samples • Fish • 20,451

  12. Benthos

  13. Number of Samples - Fish

  14. Benthos – Samples by Month

  15. Fish – Samples by Month

  16. Maps of Biologial Data • Data Type • Benthos • Fish • Stations • ALL • Subset • State = “VA” • Methods <> “Presence/Absence” • Temporal • By decade

  17. Replicate Sampling • All on different days • Benthos • State = VA and Method <> P/A • 1,429 Stations with more than 1 sample • 334 same day duplicates • Fish • State = VA/TN and Method <> P/A • 1,598 Stations with more than 1 sample

  18. Benthos - ALL

  19. Benthos – VA, Method <> “P/A”

  20. Benthos – VA, Method <> “P/A” Pre-1950 are bad dates

  21. Fish - ALL

  22. Fish – VA/TN, Method <> “P/A”

  23. Fish – VA/TN, Method <> “P/A” Pre-1950 are bad dates

  24. Issue with duplicate sites and different locations • INSTAR is supposed to include DGIF but only includes a limited number tagged as DGIF. No exact matches on Lat/Long between the data sets. • In this example both points are possible matches but neither is on NHD+ reach. Nor would they drain to the same reach. But both are supposed to be the same DGIF site. • Recommend dropping DGIF tagged data in INSTAR.

  25. Physical Habitat • Not easily merged. • No Data • DGIF • NAWQA • DCR • TN • RBP • INSTAR • MAHA • MAIA • EMPA • MAHA • MAIA • ProbMon

  26. Example Stream Network

  27. USGS gages (n=398) 309/398 gages have at least 1 bio station (fish or bugs) on the same NHD reach.

  28. Stations by Ecoregion (Level 3) Method = community or unknown State = VA (and/or TN for Fish)

  29. Hydrological Flow Classes Orth et al. DRAFT

  30. Orth et al. DRAFT

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