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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

Commonwealth of VirginiaFlow-Ecology

Project Meeting

VDEQ

June 23, 2011

data sources
Data Sources
  • INSTAR
  • DGIF
  • MAHA
  • MAIA
  • NAWQA
  • DCR
  • TN
  • ProbMon (Genus and Family)
slide4
Data
  • Compiled
    • Biological
      • Fish
      • Benthic Macroinvertebrates
  • Available
    • Habitat
      • Many different forms
        • RBP visual
        • EMAP style
criteria for biological data
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)
criteria for biological data1
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
data issues
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
benthos data comparability
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.
non community methods
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.
number of samples
Number of Samples
  • Benthos
    • 9,171
    • Primary samples
  • Fish
    • 20,451
maps of biologial data
Maps of Biologial Data
  • Data Type
    • Benthos
    • Fish
  • Stations
    • ALL
    • Subset
      • State = “VA”
      • Methods <> “Presence/Absence”
    • Temporal
      • By decade
replicate sampling
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
issue with duplicate sites and different locations
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.
physical habitat
Physical Habitat
  • Not easily merged.
    • No Data
      • DGIF
      • NAWQA
      • DCR
      • TN
    • RBP
      • INSTAR
      • MAHA
      • MAIA
    • EMPA
      • MAHA
      • MAIA
      • ProbMon
usgs gages n 398
USGS gages (n=398)

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

stations by ecoregion level 3
Stations by Ecoregion (Level 3)

Method = community or unknown

State = VA (and/or TN for Fish)

hydrological flow classes
Hydrological Flow Classes

Orth et al. DRAFT

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