Maine Department of Environmental Protection
Biological
Monitoring Program
Stream Algae Report
Site Information
| Name: | Seboeis Stream - Station 665 | Sampled by: | Biomonitoring Unit |
| Town: | Howland | Method: | Rock Scrapings 1 Inch Circles |
| Sample Date: | 2006-06-28 | Sample ID: | SA-665-2006R (538) |
| Location: | Upstream Of Howland Rd. |
Model Results and Variables
Blue = this sample. Boxplots = range of all samples. Grey shaded
areas = 90th and/or 10th percentile of reference site values.
| Statutory Class = A |
| Final Determination = A |
| Attains Class = YES |
| Reason = Model |
| Model Result = A |
| Prob. Class A = 1.00 |
| Prob. Class B = 0.00 |
| Prob. Class C = 0.00 |
| Prob. NA = 0.00 |
Additional Metrics
Stream Characteristics and Water Chemistry
Blue = this sample. Boxplots = range of all samples. Grey shaded
areas = 10th to 90th percentile of reference site values
| Wetted width = 33 m |
| Depth = 50 cm |
| Water velocity = 69 cm/s |
| Riffle = 40 % |
| Run = 60 % |
| Canopy Cover = 10 % |
| Bedrock = 0 % |
| Boulder = 35 % |
| Cobble = 35 % |
| Gravel = 20 % |
| Sand = 10 % |
| Silt = 0 % |
| Clay = 0 % |
Viewing Bucket and Land Use
| Statutory Class: A |
| Nutrient Response Indicator Criterion: <19% Nuisance Algae Cover |
| Nuisance Algae in Survey: 31.9 % cover |
| Meets Nutrient Response Indicator Criterion: No |
Site Information
| Name: | Seboeis Stream - Station 665 | Sampled by: | Biomonitoring Unit |
| Town: | Howland | Method: | Rock Scrapings 1 Inch Circles |
| Sample Date: | 2006-06-28 | Sample ID: | SA-665-2006R (538) |
Taxa List (See key at end of report)
| Name | Group | RA | RB | Oxy | Sap | Sal | Tr | Mot | GF | Tol | TN | TP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Eunotia soleirolii | Pennate Diatom | 0.448 | 0.416 | 1 | 2 | 1 | 1 | V | E | NA | NA | NA |
| Achnanthidium minutissimum | Pennate Diatom | 0.101 | 0.002 | 1 | 2 | 2 | 7 | N | P | 41.2 | NA | NA |
| Tabellaria flocculosa | Pennate Diatom | 0.093 | 0.023 | 1 | 2 | 1 | 3 | N | U | 18.8 | 17 | 32 |
| Batrachospermum | Red Algae | 0.051 | 0.040 | 27.6 | 27 | 32 | ||||||
| Phormidium | Filamentous Cyanobacteria | 0.037 | 0.002 | 42.6 | 60 | NA | ||||||
| Brachysira microcephala | Pennate Diatom | 0.037 | 0.004 | 2 | 1 | 2 | 2 | M | P | 18 | 12 | 18 |
| Aphanochaete repens | Filamentous Green | 0.034 | 0.005 | NA | NA | NA | ||||||
| Oedogonium | Filamentous Green | 0.034 | 0.408 | 37.6 | 27 | 47 | ||||||
| Gongrosira | Filamentous Green | 0.031 | 0.010 | 37.3 | 37 | NA | ||||||
| Frustulia crassinervia | Pennate Diatom | 0.026 | 0.010 | 1 | 1 | 1 | 1 | M | P | 24.7 | 27 | 61 |
| Eunotia implicata | Pennate Diatom | 0.022 | 0.031 | 1 | V | E | 28.3 | 16 | 15 | |||
| Brachysira brebissonii | Pennate Diatom | 0.019 | 0.002 | 2 | 1 | 1 | 1 | M | P | 16.3 | 8 | 4 |
| Encyonema neogracile | Pennate Diatom | 0.019 | 0.003 | 1 | 1 | 1 | 2 | V | S | 24 | 7 | NA |
| Eunotia bilunaris | Pennate Diatom | 0.011 | 0.004 | 2 | 2 | 2 | 7 | V | E | 37.6 | 17 | 28 |
| Mougeotia | Filamentous Green | 0.006 | 0.015 | 26.9 | 10 | 12 | ||||||
| Bulbochaete | Filamentous Green | 0.004 | 0.004 | 25.1 | 11 | 8 | ||||||
| Eunotia incisa | Pennate Diatom | 0.004 | 0.001 | 1 | 1 | 1 | 1 | V | E | 24.8 | 18 | 35 |
| Fragilaria capucina | Pennate Diatom | 0.004 | 0.000 | 2 | 2 | 3 | N | V | 32.9 | 59 | 51 | |
| Gomphonema affine | Pennate Diatom | 0.004 | 0.002 | 1 | 2 | 2 | 3 | N | S | 34.3 | NA | NA |
| Gomphonema parvulum | Pennate Diatom | 0.004 | 0.000 | 4 | 4 | 2 | 5 | N | S | 42.2 | 21 | NA |
| Ulnaria acus | Pennate Diatom | 0.004 | 0.003 | 2 | 3 | 2 | 5 | N | E | 31.7 | 29 | 48 |
| Fragilaria vaucheriae | Pennate Diatom | 0.004 | 0.000 | 3 | 3 | 2 | 5 | N | V | 44.2 | 36 | NA |
| Cavinula cocconeiformis | Pennate Diatom | 0.004 | 0.014 | 1 | 1 | 1 | 2 | M | P | 37.5 | NA | NA |
Taxa List Key
| Column | Name | Description |
|---|---|---|
| RA | Relative Abundance | number of cells (density of cells per square centimeter) in a sample / total abundance of all taxa |
| RB | Relative Biovolume | Volume of a taxon’s cells in a sample / volume of all algae cells in a sample |
| Oxy | van Dam Oxygen tolerance | 1=100% DO saturation, 2=>75% DO saturation, 3=>50% DO saturation, 4=>30% DO saturation, 5=<30% DO saturation |
| Sap | van Dam Saprobic value | Saprobic values relate to the amount of organic pollution, biological oxygen demand, and DO concentrations. Values range from 1 (intolerant of organic pollution) to 5 (highly tolerant of organic pollution) |
| Sal | van Dam Salinity value | 1=freshwater (<100 mg/L chloride) , 2=fresh-brackish (<500 mg/L), 3=brackish-freshwater (500-1000 mg/L), 4=brackish (1000-5000 mg/L) |
| Tr | van Dam Trophic value | 1=oligotraphentic, 2=oligo-mesotraphentic, 3=mesotraphentic, 4=meso-eutraphentic, 5=eutraphentic, 6=hypereutraphentic, 7=indifferent to trophic state |
| Mot | Motility of Diatoms | Motility (capability of movement in water or on substrates) based on genus (Wang et al. 2005): N= not motile, M = motile , H = highly motile, V=variable within genus |
| GF | Growth Forms | E= erect, P=prostrate, S=stalked, U=unattached, V=variable (based on communication with R. Jan Stevenson) |
| Tol | Tolerance value | Tolerance to a combination of watershed disturbance, conductivity, and nutrient enrichment (based on Maine data). Value range from 1=most senstive to 100=most tolerant. |
| TN | TN value | Preference for total nitrogen (TN) based on Maine data. Values range from 1=low TN concentrations to 100=high TN concentrations. |
| TP | TP value | Preference for total phosphorus (TP) based on Maine data. Values range from 1=low TP concentrations to 100=high TP concentrations. |