Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: Togus Stream - Station 611 Sampled by: Biomonitoring Unit
Town: Chelsea Method: Rock Scrapings 1 Inch Circles
Sample Date: 2002-07-15 Sample ID: SA-611-2002R (143)
Location: Dnstrm Of Usgs Gauge

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 = B
Final Determination = B
Attains Class = YES
Reason = Model
Model Result = B
Prob. Class A = 0.30
Prob. Class B = 0.70
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 = 5 m
Depth = 33 cm
Water velocity = 26 cm/s
Riffle = 10 %
Run = 70 %
Pool = 20 %
Bedrock = 30 %
Boulder = 20 %
Cobble = 20 %
Gravel = 10 %
Sand = 20 %
Silt = 0 %
Clay = 0 %

Viewing Bucket and Land Use
Statutory Class: B
Nutrient Response Indicator Criterion: <24% Nuisance Algae Cover
Nuisance Algae in Survey: 38.7 % cover
Meets Nutrient Response Indicator Criterion: No

Site Information
Name: Togus Stream - Station 611 Sampled by: Biomonitoring Unit
Town: Chelsea Method: Rock Scrapings 1 Inch Circles
Sample Date: 2002-07-15 Sample ID: SA-611-2002R (143)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Phormidium formosum Filamentous Cyanobacteria 0.365 0.258 42.6 23 NA
Phormidium retzii Filamentous Cyanobacteria 0.168 0.228 42.6 NA NA
Phormidium granulatum Filamentous Cyanobacteria 0.101 0.015 42.6 26 NA
Achnanthidium minutissimum Pennate Diatom 0.063 0.020 1 2 2 7 N P 41.2 NA NA
Phormidium tergestinium Filamentous Cyanobacteria 0.048 0.048 42.6 53 NA
Oscillatoria Filamentous Cyanobacteria 0.046 0.021 NA NA NA
Tetrastrum glabrum Colonial Green 0.041 0.002 NA NA NA
Scenedesmus acutus Colonial Green 0.028 0.003 NA NA 61
Scenedesmus ecornis Colonial Green 0.028 0.004 39.9 23 69
Sellaphora arvensis Pennate Diatom 0.016 0.003 M P NA NA NA
Stauridium tetras Colonial Green 0.016 0.004 35.2 NA NA
Sorastrum americanum Colonial Green 0.008 0.014 NA NA NA
Psammothidium subatomoides Pennate Diatom 0.007 0.002 1 1 1 2 V P 42.4 20 35
Gomphonema parvulum Pennate Diatom 0.006 0.009 4 4 2 5 N S 42.2 21 NA
Meridion circulare Pennate Diatom 0.006 0.026 2 2 2 7 N E 46.5 64 87
Tabellaria flocculosa Pennate Diatom 0.005 0.053 1 2 1 3 N U 18.8 17 32
Staurosira construens var. venter Pennate Diatom 0.004 0.002 1 2 2 4 N V 41.3 35 67
Eunotia incisa Pennate Diatom 0.003 0.014 1 1 1 1 V E 24.8 18 35
Navicula gysingensis Pennate Diatom 0.003 0.002 M P NA NA NA
Cocconeis placentula var. lineata Pennate Diatom 0.003 0.005 3 2 2 5 N P 51.5 62 82
Navicula notha Pennate Diatom 0.003 0.004 M P 37.4 20 34
Nitzschia agnita Pennate Diatom 0.002 0.001 4 H P NA NA NA
Karayevia suchlandtii Pennate Diatom 0.002 0.002 1 1 1 1 V P 53.5 53 86
Diadesmis contenta Pennate Diatom 0.002 0.001 1 2 2 7 M P NA NA NA
Kobayasiella subtilissima Pennate Diatom 0.002 0.002 1 1 1 1 M P NA NA NA
Synedra rumpens Pennate Diatom 0.002 0.003 2 2 N E 34.3 20 32
Encyonema minutum Pennate Diatom 0.001 0.002 2 V S 50.2 21 NA
Nitzschia dissipata Pennate Diatom 0.001 0.003 2 2 2 4 H P 60.9 48 75
Eunotia pectinalis Pennate Diatom 0.001 0.025 1 2 1 3 V E 12.9 NA NA
Fallacia indifferens Pennate Diatom 0.001 0.000 1 M P NA NA NA
Lemnicola hungarica Pennate Diatom 0.001 0.005 4 3 2 6 V P NA NA NA
Eunotia meisteri Pennate Diatom 0.001 0.000 1 1 1 1 V E NA NA NA
Frustulia krammeri Pennate Diatom 0.001 0.003 1 1 1 1 M P 20.3 38 54
Navicula cryptocephala Pennate Diatom 0.001 0.003 3 3 2 7 M P 56.3 55 80
Euglena elastica Euglenoid 0.001 0.029 NA 70 92
Euastrum denticulatum Desmid 0.001 0.037 NA NA NA
Craticula subminuscula Pennate Diatom 0.001 0.001 4 4 2 5 M P NA NA NA
Eunotia minor Pennate Diatom 0.000 0.004 1 1 V E 42.4 19 34
Brachysira microcephala Pennate Diatom 0.000 0.000 2 1 2 2 M P 18 12 18
Stauroneis phoenicenteron Pennate Diatom 0.000 0.022 3 2 2 4 M P NA NA NA
Eunotia implicata Pennate Diatom 0.000 0.002 1 V E 28.3 16 15
Stenopterobia delicatissima Pennate Diatom 0.000 0.006 1 1 1 1 H P NA NA NA
Encyonema neogracile Pennate Diatom 0.000 0.001 1 1 1 2 V S 24 7 NA
Nitzschia sociabilis Pennate Diatom 0.000 0.001 2 2 2 5 H P NA NA NA
Eunotia naegelii Pennate Diatom 0.000 0.002 1 1 1 1 V E 22.3 22 41
Nitzschia gracilis Pennate Diatom 0.000 0.000 2 2 1 3 H P 46.9 22 64
Surirella minuta Pennate Diatom 0.000 0.001 3 3 2 5 H P 79.7 69 95
Eunotia pectinalis var. undulata Pennate Diatom 0.000 0.002 1 2 1 1 V E 24.3 22 35
Cymbella aspera Pennate Diatom 0.000 0.081 1 1 2 7 V S NA NA NA
Navicula rhynchocephala Pennate Diatom 0.000 0.004 4 2 2 7 M P 62.1 44 78
Nitzschia frustulum Pennate Diatom 0.000 0.000 3 2 3 5 H P 50.4 53 88
Chamaepinnularia mediocris Pennate Diatom 0.000 0.000 1 1 1 1 M P 41.9 NA NA
Geissleria paludosa Pennate Diatom 0.000 0.000 1 1 1 M P NA NA NA
Fragilaria gracilis Pennate Diatom 0.000 0.000 1 1 2 2 N V 30.6 18 22
Karayevia oblongella Pennate Diatom 0.000 0.000 1 1 2 1 V P 62.2 64 79
Sellaphora pupula Pennate Diatom 0.000 0.001 3 3 2 4 M P 46.8 38 75
Ulnaria ulna Pennate Diatom 0.000 0.015 3 4 2 N E 34.2 17 21
Surirella angusta Pennate Diatom 0.000 0.003 2 2 2 5 H P 65.4 57 96
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.