- Chart showing recommended priority levels for determining
the appropriate habitat type to select for semi-quantitative sampling
- Schematic diagram of the Slack sampler used to collect benthic
invertebrates from wadeable, coarse-grained substrates
- Diagram illustrating how semi-quantitative
samples could be distributed within a sampling
reach
- Flow chart indicating how benthic
invertebrate samples are processed in the field
- Diagram of the diameter markings (A) and
the alignment of the sample divider (B) used in
sieve diameter sample-splitting procedure
- Flow chart illustrating the repeated splitting of elutriate and
main-body benthic invertebrate sample components
to achieve appropriate sample volumes
- Example of a completed internal sample
label
- Example of a completed external
sample label with explanation of the 16-character
sample-identification code used by the National
Water-Quality Assessment Program
- Examples
of sample-identification codes generated from one
composite sample
13-17. Example of:
- A two-page field data sheet used to
record information during the collection of
qualitative multihabitat (QMH) samples
- Information entered into the instream habitat matrix of
the qualitative multihabitat field data sheet
- A two-page field data sheet used to record information
during the collection of semi-quantitative samples
from the faunistically richest- (RTH) and
depositional- (DTH) targeted habitats
- A two-page field data sheet used to record information during
the collection of semi-quantitative samples from snag habitats
- A field sample log that lists collection
and disposition data for all samples collected
Table
- Description of the elements that
define the three-tiered hierarchy of instream
habitat types targeted for qualitative and semi-quantitative sampling
- Abbreviations of study-unit names used in
the 16-character sample-identfication code