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Ambient stream biological monitoring site

Diobsud Cr

Photo of stream from sample site

Site details

project Ambient ecoregion North Cascades
latitude 48.5605 county Skagit
latitude -121.415 land use reference site
elevation (ft) 345 reference site True
stream order 2 map link

Years when sampling has occurred:

2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995

Site comment:

1) Selected as one of ten core reference sites to be monitored annually starting in 2002. 2) This stream belongs to a class of streams that have boulder-dominated substrates and turbulent surface water during high flow portions of the year. The boulder substrates are more difficult to sample with conventional benthic macroinvertebrate collection devices, and may lead to elevated sampling variability.
For explanation on this site summary and any visit report below, see site summary and visit report keys.

Site visit reports:

Diobsud Cr

Habitat measurements and taxa metrics - October 12, 2004

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
10.410.779.537.543

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle117.72.00  1.30.70 0.400.929.00.09
DKICKriffle210.82.00  1.80.51 0.161.632.00.15
DKICKriffle318.52.00  1.10.51 0.251.025.00.09
DKICKriffle414.44.00  4.10.54 0.131.224.00.15

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    14%74%12%   
2    8%42%50%   
3   4%16%40%40%   
4    8%42%50%   

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
1 9% 2%2%2%4%11%26%18%18%11%    
2 14% 3%1%3%8%13%13%13%12%12%4%3%1% 
33%6% 6%1%3%6%15%23%14%13%4%4%1%1% 
4 11% 3% 1%4%4%20%11%9%20%15%1%1% 

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 0.72

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited93%67%
(5)
2%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited2
(1)
25
(1)
7
(3)
178

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited158.833
(5)
41%66%23%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited29
(1)
41%23%1%
(5)
44%
(3)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #2385

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.76
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100572       	Rhithrogena sp.     	    157      	   24.7
100817       	B. tricaudatus      	    145      	   22.8
103273       	Sweltsa grp.        	    122      	   19.2
100557       	Cinygmula sp.       	     86      	   13.5
100504       	Heptageniidae       	     17      	    2.7
102788       	Taeniopterygidae    	     16      	    2.5
116847       	Lepidostoma togatum 	     13      	    2.0
121027       	Dicranota sp.       	      9      	    1.4
82754        	Acarina             	      8      	    1.3
102594       	Z. cinctipes        	      8      	    1.3
100996       	Ameletus sp.        	      5      	    0.8
69304        	Piscicola sp.       	      5      	    0.8
101233       	Ephemerella sp.     	      5      	    0.8
100635       	E. grandis          	      4      	    0.6
Z730         	Tvetenia Bavarica Gr	      4      	    0.6
101368       	D. doddsi           	      4      	    0.6
126774       	Simulium sp.        	      4      	    0.6
128477       	Brillia             	      3      	    0.5
100801       	Acentrella sp.      	      3      	    0.5
68854        	Naididae            	      3      	    0.5
103121       	Doroneuria sp.      	      3      	    0.5
102914       	Perlidae            	      1      	    0.2
102986       	C. californica      	      1      	    0.2
103102       	Skwala sp.          	      1      	    0.2
116025       	Ecclisomyia sp.     	      1      	    0.2
116794       	Lepidostoma sp.     	      1      	    0.2
119656       	Antocha sp.         	      1      	    0.2
128401       	Pagastia            	      1      	    0.2
128730       	Heleniella          	      1      	    0.2
128874       	Orthocladius        	      1      	    0.2
568521       	Cricotopus (Cricotop	      1      	    0.2
Y820         	Eukiefferiella Pseud	      1      	    0.2
103254       	Suwallia sp.        	      1      	    0.2

Diobsud Cr

Habitat measurements and taxa metrics - September 29, 2003

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Visit comment

Pink salmon actively spawning

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
13.59.926.687.447

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle115.23.00  1.50.27 1.001.533.20.09
DKICKriffle212.61.00  0.50.32 1.000.242.20.13
DKICKriffle315.91.00  1.70.31 0.821.328.60.10
DKICKriffle411.22.00  2.00.24 0.221.729.40.16

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    14%56%30%   
2    12%28%60%   
3    8%40%52%   
4    18%28%46%8%  

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
1                
2                
3                
4                

Taxa: RIVPACS score

RIVPACS not available.

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited77%52%
(3)
18%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited10
(3)
34
(1)
8
(3)
268

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited1911.873
(5)
53%49%19%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited515
(3)
25%12%4%
(5)
37%
(3)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #2055

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.76
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100572       	Rhithrogena sp.     	    129      	   18.9
100817       	B. tricaudatus      	    128      	   18.8
129890       	Micropsectra        	     74      	   10.9
103273       	Sweltsa grp.        	     49      	    7.2
100801       	Acentrella sp.      	     43      	    6.3
100557       	Cinygmula sp.       	     41      	    6.0
115453       	Hydropsyche sp.     	     28      	    4.1
129197       	Tvetenia            	     24      	    3.5
116794       	Lepidostoma sp.     	     24      	    3.5
116912       	B. americanus       	     21      	    3.1
68510        	Enchytraeidae       	     18      	    2.6
102594       	Z. cinctipes        	     13      	    1.9
568521       	Cricotopus (Cricotop	      8      	    1.2
121027       	Dicranota sp.       	      7      	    1.0
101187       	Paraleptophlebia sp.	      7      	    1.0
119656       	Antocha sp.         	      5      	    0.7
Y760         	Eukiefferiella Brehm	      5      	    0.7
101368       	D. doddsi           	      5      	    0.7
115635       	Agraylea sp.        	      4      	    0.6
115097       	Rhyacophila sp.     	      4      	    0.6
P630         	R. Brunnea grp.     	      4      	    0.6
129182       	Thienemanniella     	      4      	    0.6
115530       	A. grandis          	      4      	    0.6
Z690         	Thienemannimyia Gr. 	      4      	    0.6
102788       	Taeniopterygidae    	      3      	    0.4
82754        	Acarina             	      3      	    0.4
136377       	Oreogeton sp.       	      3      	    0.4
101233       	Ephemerella sp.     	      3      	    0.4
128874       	Orthocladius        	      3      	    0.4
102914       	Perlidae            	      3      	    0.4
102972       	H. pacifica         	      1      	    0.1
103102       	Skwala sp.          	      1      	    0.1
103121       	Doroneuria sp.      	      1      	    0.1
128477       	Brillia             	      1      	    0.1
116065       	N. occidentis       	      1      	    0.1
115165       	R. arnaudi          	      1      	    0.1
115641       	Hydroptila sp.      	      1      	    0.1
100626       	Epeorus sp.         	      1      	    0.1
Y820         	Eukiefferiella Pseud	      1      	    0.1
102842       	D. augusta          	      1      	    0.1

Diobsud Cr

Habitat measurements and taxa metrics - October 11, 2002

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
8. 28.497.751

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle115.52.00  1.60.30 0.090.726.90.21
DKICKriffle25.03.00  1.70.46 0.760.519.10.18
DKICKriffle37.33.00  4.20.30 0.651.927.20.15
DKICKriffle420.71.00  2.60.14 0.242.224.50.15

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
12%  6%10%50%32%   
2   6%6%40%48%   
3    6%54%40%   
4   4%14%40%42%   

Habitat: pebble counts

loc
no
<2mm2-4mm4-6mm6-8mm8-11mm11-16mm16-22mm22-32mm32-45mm45-64mm64-90mm90-128mm128-180mm180-256mm256-512mm>=512mm
148%2% 4%8%16%12%16%38%52%12%26%14%4%  
216%2%2%4%2%2%6%16%28%18%36%28%34%12%2% 
38%2%4%14%8%12%22%38%32%56%38%16%8%8%  
420% 12%12%14%14%10%18%10%28%38%28%14%4%2% 

Taxa: RIVPACS score

RIVPACS not available.

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited79%42%
(3)
4%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited9
(3)
35
(1)
5
(3)
2410

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited2011.613
(5)
415%64%14%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited413
(3)
26%33%2%
(5)
34%
(1)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #1861

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.76
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100572       	Rhithrogena sp.     	    199      	   24.3
103273       	Sweltsa grp.        	    196      	   23.9
68510        	Enchytraeidae       	    121      	   14.8
100817       	B. tricaudatus      	    111      	   13.5
115121       	R. Sibirica grp. - v	     29      	    3.5
102788       	Taeniopterygidae    	     28      	    3.4
128236       	Thienemannimyia     	     20      	    2.4
102567       	Malenka sp.         	     12      	    1.5
115530       	A. grandis          	     12      	    1.5
115453       	Hydropsyche sp.     	     11      	    1.3
100801       	Acentrella sp.      	      9      	    1.1
100635       	E. grandis          	      8      	    1.0
128874       	Orthocladius        	      6      	    0.7
129197       	Tvetenia            	      5      	    0.6
136377       	Oreogeton sp.       	      3      	    0.4
100629       	E. albertae         	      3      	    0.4
101187       	Paraleptophlebia sp.	      3      	    0.4
101233       	Ephemerella sp.     	      3      	    0.4
101347       	Caudatella sp.      	      3      	    0.4
101368       	D. doddsi           	      3      	    0.4
59490        	Nematoda            	      3      	    0.4
102972       	H. pacifica         	      3      	    0.4
128477       	Brillia             	      3      	    0.4
115097       	Rhyacophila sp.     	      3      	    0.4
115635       	Agraylea sp.        	      3      	    0.4
116794       	Lepidostoma sp.     	      3      	    0.4
120094       	Hexatoma sp.        	      3      	    0.4
121027       	Dicranota sp.       	      3      	    0.4
126774       	Simulium sp.        	      3      	    0.4
114139       	L. avara            	      1      	    0.1
102594       	Z. cinctipes        	      1      	    0.1
P630         	R. Brunnea grp.     	      1      	    0.1
116906       	Brachycentrus sp.   	      1      	    0.1
117159       	Glossosoma sp.      	      1      	    0.1
100996       	Ameletus sp.        	      1      	    0.1
68440        	Lumbriculidae       	      1      	    0.1
53964        	Turbellaria         	      1      	    0.1

Diobsud Cr

Habitat measurements and taxa metrics - September 14, 2000

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Visit comment

Chinook present in the stream.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
12.310.259.327.751

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle121.04.000.75 4.80.24 0.073.638.1 
DKICKriffle234.38.000.75 2.70.12 0.882.238.0 
DKICKriffle328.04.000.75 1.90.24 0.571.510.0 
DKICKriffle425.52.000.75 2.11.40  1.668.0 

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1   4%10%46%32%8%  
2   8%20%54%18%   
3   20%36%30%14%   
4    14%50%30%6%  

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 0.93

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0field composited93%69%
(5)
5%

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0field composited6
(1)
36
(1)
11
(5)
269

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: tolerance

samp
type
loc
type
loc
no
commentTV3
richness
(count)
temp
pref
avg
(score)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0field composited2511.781
(5)
50%72%4%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0field composited615
(3)
61%19%0%
(5)
68%
(5)

Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;

Taxa: sample results (individuals-per-square-meter estimates)

sample #1169

habitat typelocation no.sampler typesample area (m^2)
riffle (composite sample) DKICK 0.75
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100589       	R. robusta          	    964      	   56.3
103273       	Sweltsa grp.        	    191      	   11.2
115530       	A. grandis          	     70      	    4.1
100629       	E. albertae         	     67      	    3.9
100817       	B. tricaudatus      	     67      	    3.9
129228       	Chironominae sp.    	     61      	    3.6
102594       	Z. cinctipes        	     45      	    2.6
101399       	S. tibialis         	     39      	    2.3
101368       	D. doddsi           	     18      	    1.1
102986       	C. californica      	     15      	    0.9
128457       	Orthocladiinae sp.  	     15      	    0.9
82754        	Acarina             	     12      	    0.7
P630         	R. Brunnea grp.     	     12      	    0.7
100635       	E. grandis          	     12      	    0.7
102615       	V. cataractae       	      9      	    0.5
102643       	Capniidae           	      9      	    0.5
100801       	Acentrella sp.      	      9      	    0.5
103254       	Suwallia sp.        	      9      	    0.5
128341       	Diamesinae sp.      	      9      	    0.5
120094       	Hexatoma sp.        	      9      	    0.5
117159       	Glossosoma sp.      	      9      	    0.5
69304        	Piscicola sp.       	      6      	    0.4
126774       	Simulium sp.        	      6      	    0.4
102914       	Perlidae            	      6      	    0.4
102972       	H. pacifica         	      6      	    0.4
101389       	D. coloradensis     	      6      	    0.4
102596       	Z. columbiana       	      3      	    0.2
114142       	Narpus sp.          	      3      	    0.2
116906       	Brachycentrus sp.   	      3      	    0.2
103110       	Megarcys sp.        	      3      	    0.2
135849       	Clinocera sp.       	      3      	    0.2
101187       	Paraleptophlebia sp.	      3      	    0.2
115097       	Rhyacophila sp.     	      3      	    0.2
84195        	Ostracoda           	      3      	    0.2
J977         	Z. Oregonensis grp. 	      3      	    0.2
P622         	R. Betteni grp.     	      3      	    0.2

Diobsud Cr

Habitat measurements and taxa metrics - September 14, 1995

Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams.

Visit comment

Pink Salmon spawning (Onchorhynchus gorbuscha); filamentous algae at shallow margins of stream.

Habitat: stream chemistry, temperature, and flow

temperature
(deg C)
dis o winkler
(mg/L)
stream flow
(CFS)
pH
(pH)
conductivity
(umhos/cm)
12.510.821.227.842

Habitat: dimensions, gradient, velocity, and canopy

samp
type
loc
type
loc
no
wetted
width
(m)
stream
gradient
(%)
sample
area
(m^2)
RPD
(m)
middepth
velocity
(FS)
max
depth
(m)
Dp
(m)
canopy
(%)
bottom
velocity
(FS)
bankfull
width
(m)
avg
depth
(m)
DKICKriffle116.33.000.198.003.30.3318.000.092.350.6 
DKICKriffle28.43.000.1921.001.60.1750.00 1.411.5 
DKICKriffle310.41.000.1920.002.00.1523.000.851.617.5 
DKICKriffle412.62.000.1932.001.30.1432.00 0.816.4 

Habitat: substrate

loc
no
otherwoodsilt
clay
sandfine
gravel
coarse
gravel
cobbleboulderbedrock
rough
bedrock
smooth
1    2%18%80%   
2    4%26%70%   
3   4%4%34%58%   
4    2%40%58%   

Taxa: RIVPACS score

RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition.

RIVPACS score for this visit: 0.81

Taxa: composition

samp
type
loc
type
loc
no
commentEPT
(%)
ephem
(%)
chiron
(%)
DKICKriffle0numerically composited74%59%0%
DKICKriffle1replicate74%65%0%
DKICKriffle2replicate82%57%0%
DKICKriffle3replicate92%72%0%
DKICKriffle4replicate59%48%0%

Taxa: richness

samp
type
loc
type
loc
no
commentTrichop
richness
(count)
total
richness
(count)
Plecop
richness
(count)
EPT
richness
(count)
Ephem
richness
(count)
DKICKriffle0numerically composited93542512
DKICKriffle1replicate8270%1810
DKICKriffle2replicate10273207
DKICKriffle3replicate42652011
DKICKriffle4replicate93752511

Taxa: tolerance

samp
type
loc
type
loc
no
commenttemp
pref
avg
(score)
TV3
richness
(count)
HBI
(score)
BiTol
richness
(count)
tv7
(%)
top3
(%)
BiTol
(%)
DKICKriffle0numerically composited 20373%48%2%
DKICKriffle1replicate 12343%67%2%
DKICKriffle2replicate 13341%57%1%
DKICKriffle3replicate 14251%43%4%
DKICKriffle4replicate 19464%59%4%

Taxa: trophic/habit

samp
type
loc
type
loc
no
commentsv
richness
(count)
clinger
richness
(count)
scrapers
(%)
predators
(%)
filterers
(%)
clingers
(%)
DKICKriffle0numerically composited21134%31%1%28%
DKICKriffle1replicate21126%25%3%23%
DKICKriffle2replicate21032%27%1%30%
DKICKriffle3replicate1637%21%1%24%
DKICKriffle4replicate5931%44%0%26%

Taxa: sample results (individuals-per-square-meter estimates)

4 samples: #1168 (riffle 1), #1170 (riffle 2), #1171 (riffle 3), #1173 (riffle 4)

sample #1168

habitat typelocation no.sampler typesample area (m^2)
riffle 1 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100823       	B. bicaudatus       	    124      	   35.4
127113       	Atrichopogon sp.    	     72      	   20.6
100572       	Rhithrogena sp.     	     40      	   11.4
100632       	E. deceptivus       	     24      	    6.9
100598       	Cinygma sp.         	     21      	    6.0
115530       	A. grandis          	      7      	    2.0
116912       	B. americanus       	      6      	    1.7
68422        	Oligochaeta         	      6      	    1.7
115453       	Hydropsyche sp.     	      5      	    1.4
P760         	R. Verrula grp.     	      5      	    1.4
100557       	Cinygmula sp.       	      5      	    1.4
P630         	R. Brunnea grp.     	      4      	    1.1
100817       	B. tricaudatus      	      4      	    1.1
126892       	S. venustum         	      4      	    1.1
101193       	P. debilis          	      4      	    1.1
115719       	O. cristata         	      3      	    0.9
115165       	R. Lieftincki grp. -	      2      	    0.6
101368       	D. doddsi           	      2      	    0.6
100982       	Parameletus sp.     	      2      	    0.6
82754        	Acarina             	      2      	    0.6
84195        	Ostracoda           	      2      	    0.6
119660       	Antocha monticola   	      1      	    0.3
120094       	Hexatoma sp.        	      1      	    0.3
121027       	Dicranota sp.       	      1      	    0.3
130150       	Stratiomyidae       	      1      	    0.3
568641       	S. teresa           	      1      	    0.3
117121       	Agapetus sp.        	      1      	    0.3

sample #1170

habitat typelocation no.sampler typesample area (m^2)
riffle 2 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100557       	Cinygmula sp.       	    102      	   24.6
100823       	B. bicaudatus       	     72      	   17.4
127113       	Atrichopogon sp.    	     64      	   15.5
102594       	Z. cinctipes        	     40      	    9.7
103273       	Sweltsa grp.        	     35      	    8.5
100598       	Cinygma sp.         	     31      	    7.5
568572       	A. insignificans    	     25      	    6.0
116912       	B. americanus       	      5      	    1.2
P622         	R. Betteni grp.     	      5      	    1.2
115453       	Hydropsyche sp.     	      4      	    1.0
115719       	O. cristata         	      4      	    1.0
101368       	D. doddsi           	      3      	    0.7
116794       	Lepidostoma sp.     	      3      	    0.7
120094       	Hexatoma sp.        	      3      	    0.7
116958       	Micrasema sp.       	      2      	    0.5
103137       	Cultus sp.          	      2      	    0.5
130150       	Stratiomyidae       	      2      	    0.5
568641       	S. teresa           	      2      	    0.5
82754        	Acarina             	      2      	    0.5
P630         	R. Brunnea grp.     	      1      	    0.2
117159       	Glossosoma sp.      	      1      	    0.2
115095       	Trichoptera         	      1      	    0.2
114139       	L. avara            	      1      	    0.2
121027       	Dicranota sp.       	      1      	    0.2
126892       	S. venustum         	      1      	    0.2
101193       	P. debilis          	      1      	    0.2
116934       	A. aspilus          	      1      	    0.2

sample #1171

habitat typelocation no.sampler typesample area (m^2)
riffle 3 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
100823       	B. bicaudatus       	     62      	   16.4
568572       	A. insignificans    	     52      	   13.8
100598       	Cinygma sp.         	     50      	   13.2
103273       	Sweltsa grp.        	     48      	   12.7
100557       	Cinygmula sp.       	     44      	   11.6
100572       	Rhithrogena sp.     	     40      	   10.6
127113       	Atrichopogon sp.    	     23      	    6.1
102594       	Z. cinctipes        	     14      	    3.7
100817       	B. tricaudatus      	     14      	    3.7
100629       	E. albertae         	      6      	    1.6
115453       	Hydropsyche sp.     	      3      	    0.8
101368       	D. doddsi           	      3      	    0.8
68422        	Oligochaeta         	      3      	    0.8
120094       	Hexatoma sp.        	      3      	    0.8
102972       	H. pacifica         	      2      	    0.5
101193       	P. debilis          	      1      	    0.3
101343       	A. margarita        	      1      	    0.3
103188       	P. expansa          	      1      	    0.3
84195        	Ostracoda           	      1      	    0.3
115719       	O. cristata         	      1      	    0.3
116794       	Lepidostoma sp.     	      1      	    0.3
117159       	Glossosoma sp.      	      1      	    0.3
130150       	Stratiomyidae       	      1      	    0.3
568641       	S. teresa           	      1      	    0.3
82754        	Acarina             	      1      	    0.3
103137       	Cultus sp.          	      1      	    0.3

sample #1173

habitat typelocation no.sampler typesample area (m^2)
riffle 4 DKICK 0.19
taxon id     	taxon name          	density (m^2)	% of total
------------------------------------------------------------------
127113       	Atrichopogon sp.    	    270      	   33.6
100572       	Rhithrogena sp.     	    130      	   16.2
100823       	B. bicaudatus       	     74      	    9.2
100557       	Cinygmula sp.       	     62      	    7.7
103273       	Sweltsa grp.        	     58      	    7.2
100598       	Cinygma sp.         	     42      	    5.2
568572       	A. insignificans    	     39      	    4.9
100817       	B. tricaudatus      	     22      	    2.7
68422        	Oligochaeta         	     15      	    1.9
84195        	Ostracoda           	     14      	    1.7
100637       	E. longimanus       	      9      	    1.1
136305       	Chelifera sp.       	      7      	    0.9
112314       	Oreodytes sp.       	      7      	    0.9
121027       	Dicranota sp.       	      6      	    0.7
102594       	Z. cinctipes        	      5      	    0.6
101368       	D. doddsi           	      5      	    0.6
82754        	Acarina             	      5      	    0.6
117159       	Glossosoma sp.      	      4      	    0.5
116912       	B. americanus       	      4      	    0.5
568641       	S. teresa           	      4      	    0.5
116794       	Lepidostoma sp.     	      3      	    0.4
102840       	Leuctridae          	      2      	    0.2
117154       	Anagapetus sp.      	      2      	    0.2
101206       	P. bicornuta        	      1      	    0.1
115719       	O. cristata         	      1      	    0.1
100632       	E. deceptivus       	      1      	    0.1
102643       	Capniidae           	      1      	    0.1
103188       	P. expansa          	      1      	    0.1
112811       	Hydrophilidae       	      1      	    0.1
114144       	N. concolor         	      1      	    0.1
115530       	A. grandis          	      1      	    0.1
P630         	R. Brunnea grp.     	      1      	    0.1
115974       	Psychoglypha sp.    	      1      	    0.1
120094       	Hexatoma sp.        	      1      	    0.1
130150       	Stratiomyidae       	      1      	    0.1
131078       	Chrysops sp.        	      1      	    0.1
115453       	Hydropsyche sp.     	      1      	    0.1

Download file containing all Ecology ambient stream biological monitoring data
Microsoft Access version 2000 format in ZIP archive, ~2 megabyte download

Questions or comments on content may be sent to George Onwumere
Questions or comments on presentation may be sent to Steve Barrett.

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