Samish R
| 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. |
| suspended algae moving through the stream reach; pools are cloudy (turbid). |
| temperature (deg C) | dis o winkler (mg/L) | stream flow (CFS) | pH (pH) | conductivity (umhos/cm) |
|---|---|---|---|---|
| 11.3 | 10.4 | 10.64 | 7.5 | 110 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 1 | 10.6 | 1.25 | 0.75 | 2.2 | 0.17 | 0.99 | 17.1 |
| loc no | other | wood | silt clay | sand | fine gravel | coarse gravel | cobble | boulder | bedrock rough | bedrock smooth |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 10% | 86% | 4% |
|
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: 0.51 |
| samp type | loc type | loc no | comment | EPT (%) | ephem (%) | chiron (%) |
|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | field composited | 49% | 45% | 0% |
| samp type | loc type | loc no | comment | Trichop richness (count) | total richness (count) | Plecop richness (count) | EPT richness (count) | Ephem richness (count) |
|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | field composited | 3 (3) | 14 (1) | 0% (1) | 7 | 4 (3) |
Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;
| samp type | loc type | loc no | comment | temp pref avg (score) | TV3 richness (count) | HBI (score) | BiTol richness (count) | tv7 (%) | top3 (%) | BiTol (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | field composited | 4 (1) | 3 (5) | 0% | 10% | 81% | 0% (5) |
Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;
| samp type | loc type | loc no | comment | sv richness (count) | clinger richness (count) | scrapers (%) | predators (%) | filterers (%) | clingers (%) |
|---|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | field composited | 0% (1) | 6 (3) | 43% | 34% | 4% | 49% (5) |
Note: numbers in parentheses shows contribution to IBI score: 1 - poor; 3 - medium; 5 - good;
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | (composite sample) | DKICK | 0.75 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 100572 Rhithrogena sp. 620 40.3 127113 Atrichopogon sp. 480 31.2 68422 Oligochaeta 150 9.7 82754 Acarina 90 5.8 115453 Hydropsyche sp. 40 2.6 101233 Ephemerella sp. 40 2.6 126892 S. venustum 20 1.3 121027 Dicranota sp. 20 1.3 117159 Glossosoma sp. 20 1.3 101193 P. debilis 20 1.3 136327 Hemerodromia 10 0.6 120094 Hexatoma sp. 10 0.6 116046 Neophylax sp. 10 0.6 100557 Cinygmula sp. 10 0.6
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| pool | (composite sample) | DKICK | 0.75 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 59490 Nematoda 245 14.7 114165 C. ornata 205 12.3 127113 Atrichopogon sp. 160 9.6 100572 Rhithrogena sp. 145 8.7 103273 Sweltsa grp. 105 6.3 101343 A. margarita 105 6.3 116934 A. aspilus 95 5.7 100817 B. tricaudatus 85 5.1 82754 Acarina 85 5.1 102594 Z. cinctipes 65 3.9 101206 P. bicornuta 60 3.6 136305 Chelifera sp. 45 2.7 114180 O. quadrimaculatus 30 1.8 101395 Serratella sp. 30 1.8 100823 B. bicaudatus 25 1.5 125810 Dixa sp. 20 1.2 114197 A. dispar 20 1.2 120094 Hexatoma sp. 20 1.2 103102 Skwala sp. 15 0.9 114169 H. corpulentus 15 0.9 100598 Cinygma sp. 15 0.9 121027 Dicranota sp. 15 0.9 115453 Hydropsyche sp. 10 0.6 115105 R. Grandis grp. - gr 10 0.6 126892 S. venustum 10 0.6 99643 Entomobryidae 5 0.3 117121 Agapetus sp. 5 0.3 125873 Meringodixa sp. 5 0.3 136327 Hemerodromia 5 0.3 568572 A. insignificans 5 0.3 81400 Pisidium sp. 5 0.3 115974 Psychoglypha sp. 5 0.3
| 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.
Washington State Department of Ecology