Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: Sabattus River - Station 170 Sampled by: Biomonitoring Unit
Town: Lisbon Method: Rock Scrapings 1 Inch Circles
Sample Date: 2013-06-26 Sample ID: SA-170-2013R (1335)
Location: Below Maine Electronics, 40 M Below Dam

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 = 0.00
Prob. Class B = 0.98
Prob. Class C = 0.01
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 = 32 m
Wetted width = 32 m
Depth = 41 cm
Water velocity = 99 cm/s
Riffle = 60 %
Run = 40 %

Viewing Bucket and Land Use

Site Information
Name: Sabattus River - Station 170 Sampled by: Biomonitoring Unit
Town: Lisbon Method: Rock Scrapings 1 Inch Circles
Sample Date: 2013-06-26 Sample ID: SA-170-2013R (1335)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Phormidium Filamentous Cyanobacteria 0.330 0.050 42.6 60 NA
Homoeothrix janthina Filamentous Cyanobacteria 0.185 0.002 43 19 21
Unknown Rhodophyte Florideophycidae (Chantransia) Red Algae 0.137 0.120 47.5 48 68
Leptolyngbya Filamentous Cyanobacteria 0.099 0.001 38.3 28 75
Achnanthidium minutissimum Pennate Diatom 0.071 0.004 1 2 2 7 N P 41.2 NA NA
Achnanthidium rivulare Pennate Diatom 0.045 0.004 N P 49.9 39 49
Gongrosira Filamentous Green 0.018 0.041 37.3 37 NA
Oedogonium Filamentous Green 0.014 0.682 37.6 27 47
Fragilaria vaucheriae Pennate Diatom 0.011 0.004 3 3 2 5 N V 44.2 36 NA
Gomphonema parvulum Pennate Diatom 0.010 0.004 4 4 2 5 N S 42.2 21 NA
Ankistrodesmus falcatus Colonial Green 0.010 0.001 45.7 58 75
Microspora tumidula Filamentous Green 0.006 0.001 NA NA NA
Cymbella tumida Pennate Diatom 0.003 0.014 1 1 2 4 V S 57.8 48 78
Encyonema minutum Pennate Diatom 0.003 0.001 2 V S 50.2 21 NA
Eolimna minima Pennate Diatom 0.003 0.000 4 4 2 5 M P 57 64 88
Fallacia tenera Pennate Diatom 0.003 0.000 M P NA NA NA
Planothidium frequentissimum Pennate Diatom 0.003 0.001 3 4 2 V P 65.1 69 92
Aulacoseira ambigua Centric Diatom 0.003 0.002 3 2 2 5 N U 34.5 25 56
Caloneis bacillum Pennate Diatom 0.003 0.002 2 2 2 4 M P 64.9 72 96
Encyonema silesiacum Pennate Diatom 0.002 0.003 3 3 2 7 V S 46.9 43 69
Navicula gregaria Pennate Diatom 0.002 0.001 4 3 3 5 M P 79.6 66 89
Navicula recens Pennate Diatom 0.002 0.002 3 3 5 M P NA NA NA
Nitzschia frustulum Pennate Diatom 0.002 0.000 3 2 3 5 H P 50.4 53 88
Nitzschia palea Pennate Diatom 0.002 0.001 4 5 2 6 H P 60.3 67 89
Nitzschia palea var. debilis Pennate Diatom 0.002 0.000 1 1 1 H P 53.4 47 79
Trachelomonas volvocina Euglenoid 0.002 0.005 NA NA NA
Cymbopleura naviculiformis Pennate Diatom 0.001 0.003 2 2 2 5 V S 51.6 35 53
Discostella stelligera Centric Diatom 0.001 0.000 2 N U NA 51 NA
Craticula subminuscula Pennate Diatom 0.001 0.000 4 4 2 5 M P NA NA NA
Eucocconeis laevis Pennate Diatom 0.001 0.000 1 1 1 1 V P 29.5 17 18
Fragilaria gracilis Pennate Diatom 0.001 0.000 1 1 2 2 N V 30.6 18 22
Hippodonta capitata Pennate Diatom 0.001 0.001 3 3 2 4 M P 66.8 61 89
Navicula antonii Pennate Diatom 0.001 0.000 M P 65.4 54 89
Navicula cryptocephala Pennate Diatom 0.001 0.001 3 3 2 7 M P 56.3 55 80
Navicula rhynchocephala Pennate Diatom 0.001 0.001 4 2 2 7 M P 62.1 44 78
Navicula symmetrica Pennate Diatom 0.001 0.001 M P NA NA NA
Nitzschia acidoclinata Pennate Diatom 0.001 0.000 1 2 1 3 H P 51.6 40 56
Nitzschia amphibia Pennate Diatom 0.001 0.000 3 3 2 5 H P 79.8 53 93
Nitzschia dissipata Pennate Diatom 0.001 0.001 2 2 2 4 H P 60.9 48 75
Nupela frezelii Pennate Diatom 0.001 0.000 M P NA NA NA
Placoneis elginensis Pennate Diatom 0.001 0.002 2 2 2 5 M P NA NA NA
Planothidium rostratum Pennate Diatom 0.001 0.000 3 3 2 5 V P 56.6 48 96
Rossithidium linearis Pennate Diatom 0.001 0.000 V P 32 24 56
Staurosira construens Pennate Diatom 0.001 0.000 1 2 2 4 N V 46.8 30 58
Staurosira construens var. venter Pennate Diatom 0.001 0.000 1 2 2 4 N V 41.3 35 67
Surirella minuta Pennate Diatom 0.001 0.001 3 3 2 5 H P 79.7 69 95
Tabellaria flocculosa Pennate Diatom 0.001 0.002 1 2 1 3 N U 18.8 17 32
Achnanthidium subhudsonis var. kraeuselii Pennate Diatom 0.001 0.000 V P 57 33 89
Adlafia bryophila Pennate Diatom 0.001 0.000 1 1 1 3 M P 38.2 20 59
Bacillaria paradoxa Pennate Diatom 0.001 0.003 N P NA NA NA
Undetermined Pennate diatom Pennate Diatom 0.001 0.002 NA NA NA
Cyclotella meneghiniana Centric Diatom 0.000 0.000 5 4 3 5 N U 72.6 55 73
Discostella pseudostelligera Centric Diatom 0.000 0.000 3 3 2 5 N U 28.6 38 86
Eunotia implicata Pennate Diatom 0.000 0.002 1 V E 28.3 16 15
Fallacia pygmaea Pennate Diatom 0.000 0.000 3 3 3 5 M P NA NA NA
Gomphonema gracile Pennate Diatom 0.000 0.000 1 1 2 3 N S 21.9 13 20
Gomphonema kobayasii Pennate Diatom 0.000 0.000 N S 71.2 50 79
Mayamaea agrestis Pennate Diatom 0.000 0.000 2 M P 67.8 NA NA
Mayamaea atomus Pennate Diatom 0.000 0.000 2 4 2 6 M P NA NA NA
Navicula Pennate Diatom 0.000 0.000 M P NA NA NA
Navicula erifuga Pennate Diatom 0.000 0.000 3 5 M P 66.5 NA NA
Navicula trivialis Pennate Diatom 0.000 0.001 3 3 3 5 M P 78.6 68 98
Nitzschia acicularioides Pennate Diatom 0.000 0.000 H P NA NA NA
Nitzschia recta Pennate Diatom 0.000 0.001 2 2 2 7 H P 46.6 43 73
Stauroneis kriegeri Pennate Diatom 0.000 0.000 2 2 2 4 M P 48.4 59 96
Staurosira construens var. binodis Pennate Diatom 0.000 0.000 1 1 2 4 N V NA NA NA
Staurosirella pinnata Pennate Diatom 0.000 0.000 1 2 2 7 N V 44.2 38 56
Stephanodiscus niagarae Centric Diatom 0.000 0.020 N U NA NA NA
Surirella linearis Pennate Diatom 0.000 0.007 2 2 2 H P NA NA NA
Ulnaria ulna Pennate Diatom 0.000 0.001 3 4 2 N E 34.2 17 21
Achnanthidium altergracillima Pennate Diatom 0.000 0.000 2 1 N P NA 26 31
Achnanthidium exiguum Pennate Diatom 0.000 0.000 1 2 2 7 N P 51.1 63 91
Aulacoseira granulata Centric Diatom 0.000 0.000 3 2 2 5 N U NA NA NA
Cocconeis placentula Pennate Diatom 0.000 0.000 3 2 2 5 N P NA 30 82
Cyclotella bodanica var. lemanica Centric Diatom 0.000 0.000 1 1 1 1 N U 14.3 21 20
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.