xvi
List of Figures
Figure 6.3 Wisconsin net and collection bucket diagram. Some
microzooplankton nets have a reducing collar attached.
195
Figure 6.4 Schematic hypothetical examples of plots to examine
mayfly richness over time in response to changes in
stream chemistry plotted over a period of 8 or more
years for a group of seven streams. Plot A shows richness
plotted against chemistry; plot B shows both richness and
chemistry plotted against time for one of the streams.
207
Figure 6.5 Average number of families of aquatic insects for each of
14 streams in Shenandoah National Park versus the mean
(left) or minimum (right) ANC of each stream. The stream
ANC values are based on quarterly samples from 1988 to
2001. The invertebrate samples are contemporaneous.
Results are presented for the orders Ephemeroptera
(top), Plecoptera (center), and Tricoptera (bottom). The
regression relationship and correlation are given on each
diagram.
209
Figure 6.6 Total zooplankton taxonomic richness versus lakewater
ANC for a combined Adirondack data set, based on 111
lake visits to 97 lakes in EPA’s EMAP, Eastern Lakes Survey
(ELS), and Science to Achieve Results (STAR) zooplankton
surveys.
211
Figure B.1 Layout of a channel cross section for obtaining discharge
data by the velocity-area procedure.
242
Figure C.1 Lake verification checklist.
258
List of Figures
Figure 6.3 Wisconsin net and collection bucket diagram. Some
microzooplankton nets have a reducing collar attached.
195
Figure 6.4 Schematic hypothetical examples of plots to examine
mayfly richness over time in response to changes in
stream chemistry plotted over a period of 8 or more
years for a group of seven streams. Plot A shows richness
plotted against chemistry; plot B shows both richness and
chemistry plotted against time for one of the streams.
207
Figure 6.5 Average number of families of aquatic insects for each of
14 streams in Shenandoah National Park versus the mean
(left) or minimum (right) ANC of each stream. The stream
ANC values are based on quarterly samples from 1988 to
2001. The invertebrate samples are contemporaneous.
Results are presented for the orders Ephemeroptera
(top), Plecoptera (center), and Tricoptera (bottom). The
regression relationship and correlation are given on each
diagram.
209
Figure 6.6 Total zooplankton taxonomic richness versus lakewater
ANC for a combined Adirondack data set, based on 111
lake visits to 97 lakes in EPA’s EMAP, Eastern Lakes Survey
(ELS), and Science to Achieve Results (STAR) zooplankton
surveys.
211
Figure B.1 Layout of a channel cross section for obtaining discharge
data by the velocity-area procedure.
242
Figure C.1 Lake verification checklist.
258