Maine Department of Environmental Protection
Biological
Monitoring Program
Stream Algae Report
Site Information
| Name: | Little Androscoggin River - Station 43 | Sampled by: | Biomonitoring Unit |
| Town: | Paris | Method: | Rock Scrapings 1 Inch Circles |
| Sample Date: | 2013-07-18 | Sample ID: | SA-43-2013R (1359) |
| Location: | 45 M Above Potw |
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 = C |
| Final Determination = A |
| Attains Class = YES |
| Reason = Model |
| Model Result = A |
| Prob. Class A = 0.99 |
| Prob. Class B = 0.01 |
| 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
| Bankfull width = 14 m |
| Wetted width = 14 m |
| Depth = 40 cm |
| Water velocity = 103 cm/s |
| Riffle = 70 % |
| Run = 30 % |
| Canopy Cover = 8 % |
| Boulder = 40 % |
| Cobble = 50 % |
| Gravel = 10 % |
Viewing Bucket and Land Use
| Statutory Class: C |
| Nutrient Response Indicator Criterion: <35% Nuisance Algae Cover |
| Nuisance Algae in Survey: 1.3 % cover |
| Meets Nutrient Response Indicator Criterion: Yes |
Site Information
| Name: | Little Androscoggin River - Station 43 | Sampled by: | Biomonitoring Unit |
| Town: | Paris | Method: | Rock Scrapings 1 Inch Circles |
| Sample Date: | 2013-07-18 | Sample ID: | SA-43-2013R (1359) |
Taxa List (See key at end of report)
| Name | Group | RA | RB | Oxy | Sap | Sal | Tr | Mot | GF | Tol | TN | TP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Homoeothrix janthina | Filamentous Cyanobacteria | 0.252 | 0.001 | 43 | 19 | 21 | ||||||
| Homoeothrix juliana | Filamentous Cyanobacteria | 0.096 | 0.016 | NA | 32 | NA | ||||||
| Heteroleibleinia | Filamentous Cyanobacteria | 0.096 | 0.001 | NA | 22 | 22 | ||||||
| Pleurocapsa minor | Cyanobacteria | 0.088 | 0.002 | NA | NA | NA | ||||||
| Unknown Rhodophyte Florideophycidae (Chantransia) | Red Algae | 0.083 | 0.028 | 47.5 | 48 | 68 | ||||||
| Achnanthidium minutissimum | Pennate Diatom | 0.059 | 0.001 | 1 | 2 | 2 | 7 | N | P | 41.2 | NA | NA |
| Undetermined bluegreen filament | Cyanobacteria | 0.050 | 0.001 | NA | NA | NA | ||||||
| Oedogonium | Filamentous Green | 0.041 | 0.748 | 37.6 | 27 | 47 | ||||||
| Chamaesiphon incrustans | Cyanobacteria | 0.040 | 0.001 | NA | 37 | 53 | ||||||
| Gongrosira | Filamentous Green | 0.038 | 0.034 | 37.3 | 37 | NA | ||||||
| Cylindrocapsa geminella | Filamentous Green | 0.036 | 0.003 | NA | NA | NA | ||||||
| Symplocastrum | Filamentous Cyanobacteria | 0.028 | 0.001 | NA | NA | NA | ||||||
| Ulnaria ulna | Pennate Diatom | 0.021 | 0.030 | 3 | 4 | 2 | N | E | 34.2 | 17 | 21 | |
| Homoeothrix varians | Filamentous Cyanobacteria | 0.018 | 0.000 | NA | 32 | 66 | ||||||
| Mougeotia | Filamentous Green | 0.014 | 0.098 | 26.9 | 10 | 12 | ||||||
| Fragilaria vaucheriae | Pennate Diatom | 0.010 | 0.001 | 3 | 3 | 2 | 5 | N | V | 44.2 | 36 | NA |
| Gomphonema parvulum | Pennate Diatom | 0.009 | 0.001 | 4 | 4 | 2 | 5 | N | S | 42.2 | 21 | NA |
| Synedra goulardi | Pennate Diatom | 0.003 | 0.005 | N | E | NA | NA | NA | ||||
| Eunotia implicata | Pennate Diatom | 0.002 | 0.003 | 1 | V | E | 28.3 | 16 | 15 | |||
| Staurastrum punctulatum | Desmid | 0.002 | 0.007 | NA | 15 | 21 | ||||||
| Synedra rumpens | Pennate Diatom | 0.001 | 0.000 | 2 | 2 | N | E | 34.3 | 20 | 32 | ||
| Chroococcus | Cyanobacteria | 0.001 | 0.000 | NA | NA | NA | ||||||
| Fragilaria gracilis | Pennate Diatom | 0.001 | 0.000 | 1 | 1 | 2 | 2 | N | V | 30.6 | 18 | 22 |
| Cosmarium | Desmid | 0.001 | 0.006 | NA | 18 | 15 | ||||||
| Eunotia minor | Pennate Diatom | 0.001 | 0.000 | 1 | 1 | V | E | 42.4 | 19 | 34 | ||
| Brachysira microcephala | Pennate Diatom | 0.001 | 0.000 | 2 | 1 | 2 | 2 | M | P | 18 | 12 | 18 |
| Encyonema minutum | Pennate Diatom | 0.001 | 0.000 | 2 | V | S | 50.2 | 21 | NA | |||
| Euglena | Euglenoid | 0.001 | 0.001 | NA | 70 | 92 | ||||||
| Achnanthidium rivulare | Pennate Diatom | 0.001 | 0.000 | N | P | 49.9 | 39 | 49 | ||||
| Closterium venus | Desmid | 0.001 | 0.004 | NA | 25 | 33 | ||||||
| Tabellaria flocculosa (strain IV) | Pennate Diatom | 0.000 | 0.000 | 1 | 2 | 1 | 3 | N | U | 18.8 | 9 | 5 |
| Tabellaria fenestrata | Pennate Diatom | 0.000 | 0.001 | 1 | 2 | 1 | 2 | N | U | 18.8 | 16 | 28 |
| Aulacoseira | Centric Diatom | 0.000 | 0.000 | N | U | NA | NA | NA | ||||
| Nitzschia recta | Pennate Diatom | 0.000 | 0.000 | 2 | 2 | 2 | 7 | H | P | 46.6 | 43 | 73 |
| Gomphonema acuminatum | Pennate Diatom | 0.000 | 0.000 | 2 | 2 | 2 | 5 | N | S | 26.7 | 13 | 15 |
| Sellaphora pupula | Pennate Diatom | 0.000 | 0.000 | 3 | 3 | 2 | 4 | M | P | 46.8 | 38 | 75 |
| Encyonema silesiacum | Pennate Diatom | 0.000 | 0.000 | 3 | 3 | 2 | 7 | V | S | 46.9 | 43 | 69 |
| Eunotia incisa | Pennate Diatom | 0.000 | 0.000 | 1 | 1 | 1 | 1 | V | E | 24.8 | 18 | 35 |
| Encyonema neogracile | Pennate Diatom | 0.000 | 0.000 | 1 | 1 | 1 | 2 | V | S | 24 | 7 | NA |
| Nitzschia frustulum | Pennate Diatom | 0.000 | 0.000 | 3 | 2 | 3 | 5 | H | P | 50.4 | 53 | 88 |
| Encyonopsis microcephala | Pennate Diatom | 0.000 | 0.000 | 1 | 1 | 2 | 4 | V | S | 34.8 | 17 | 24 |
| Surirella linearis | Pennate Diatom | 0.000 | 0.002 | 2 | 2 | 2 | H | P | NA | NA | NA | |
| Planothidium frequentissimum | Pennate Diatom | 0.000 | 0.000 | 3 | 4 | 2 | V | P | 65.1 | 69 | 92 | |
| Cocconeis placentula var. lineata | Pennate Diatom | 0.000 | 0.000 | 3 | 2 | 2 | 5 | N | P | 51.5 | 62 | 82 |
| Eunotia exigua | Pennate Diatom | 0.000 | 0.000 | 2 | 3 | 2 | 7 | V | E | 21.7 | 13 | 13 |
| Eunotia bilunaris | Pennate Diatom | 0.000 | 0.000 | 2 | 2 | 2 | 7 | V | E | 37.6 | 17 | 28 |
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. |