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: 2003-07-15 Sample ID: SA-665-2003R (226)
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 = 56 cm
Water velocity = 27 cm/s
Riffle = 20 %
Run = 80 %
Pool = 0 %
Bedrock = 0 %
Boulder = 30 %
Cobble = 50 %
Gravel = 10 %
Sand = 10 %
Silt = 0 %
Clay = 0 %

Viewing Bucket and Land Use

Site Information
Name: Seboeis Stream - Station 665 Sampled by: Biomonitoring Unit
Town: Howland Method: Rock Scrapings 1 Inch Circles
Sample Date: 2003-07-15 Sample ID: SA-665-2003R (226)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Achnanthidium minutissimum Pennate Diatom 0.221 0.011 1 2 2 7 N P 41.2 NA NA
Undetermined bg filament 1-2 µm Cyanobacteria 0.216 0.003 NA NA NA
Eunotia pectinalis Pennate Diatom 0.146 0.546 1 2 1 3 V E 12.9 NA NA
Batrachospermum Red Algae 0.089 0.051 27.6 27 32
Tabellaria flocculosa Pennate Diatom 0.057 0.094 1 2 1 3 N U 18.8 17 32
Calothrix Filamentous Cyanobacteria 0.039 0.002 29.1 9 15
Oedogonium 5-7 µm Filamentous Green 0.028 0.041 37.6 27 47
Brachysira microcephala Pennate Diatom 0.026 0.004 2 1 2 2 M P 18 12 18
Stigeoclonium Filamentous Green 0.022 0.007 42.6 NA NA
Mougeotia 10-12 µm Filamentous Green 0.021 0.083 26.9 10 12
Fragilaria gracilis Pennate Diatom 0.016 0.002 1 1 2 2 N V 30.6 18 22
Bulbochaete Filamentous Green 0.014 0.057 25.1 11 8
Ulothrix Filamentous Green 0.011 0.006 28.9 NA NA
Eunotia incisa Pennate Diatom 0.009 0.008 1 1 1 1 V E 24.8 18 35
Chamaesiphon sp. 20 µm MESLAP Cyanobacteria 0.007 0.000 NA NA NA
Navicula notha Pennate Diatom 0.006 0.001 M P 37.4 20 34
Scenedesmus Colonial Green 0.006 0.000 NA NA NA
Eunotia flexuosa Pennate Diatom 0.006 0.006 1 1 1 2 V E 16.7 25 45
Achnanthidium deflexum Pennate Diatom 0.005 0.001 1 2 3 N P 43.5 40 52
Encyonema neogracile Pennate Diatom 0.005 0.004 1 1 1 2 V S 24 7 NA
Gomphonema parvulum Pennate Diatom 0.005 0.001 4 4 2 5 N S 42.2 21 NA
Encyonopsis microcephala Pennate Diatom 0.005 0.000 1 1 2 4 V S 34.8 17 24
Psammothidium subatomoides Pennate Diatom 0.004 0.000 1 1 1 2 V P 42.4 20 35
Gomphonema apuncto Pennate Diatom 0.004 0.002 N S NA 8 8
Frustulia crassinervia Pennate Diatom 0.003 0.002 1 1 1 1 M P 24.7 27 61
Gomphonema Pennate Diatom 0.003 0.001 N S 15.1 NA NA
Navicula cryptotenella Pennate Diatom 0.003 0.001 2 2 7 M P 44.6 61 82
Nitzschia gracilis Pennate Diatom 0.003 0.000 2 2 1 3 H P 46.9 22 64
Sellaphora pupula Pennate Diatom 0.003 0.001 3 3 2 4 M P 46.8 38 75
Amphora ovalis Pennate Diatom 0.002 0.040 2 2 2 5 M P NA NA NA
Discostella pseudostelligera Centric Diatom 0.002 0.000 3 3 2 5 N U 28.6 38 86
Eunotia bilunaris Pennate Diatom 0.002 0.000 2 2 2 7 V E 37.6 17 28
Eunotia implicata Pennate Diatom 0.002 0.002 1 V E 28.3 16 15
Gomphonema gracile Pennate Diatom 0.002 0.001 1 1 2 3 N S 21.9 13 20
Gomphonema truncatum Pennate Diatom 0.002 0.004 2 2 2 4 N S 36.5 47 44
Nitzschia recta Pennate Diatom 0.002 0.001 2 2 2 7 H P 46.6 43 73
Pinnularia subcapitata Pennate Diatom 0.002 0.001 3 2 2 2 M P 19.5 NA NA
Cavinula pseudoscutiformis Pennate Diatom 0.001 0.000 2 2 2 4 M P NA NA NA
Closterium dianae var. arcuatum Desmid 0.001 0.012 NA NA NA
Eunotia septentrionalis Pennate Diatom 0.001 0.001 1 1 1 1 V E NA NA NA
Neidium ampliatum Pennate Diatom 0.001 0.002 2 2 M P NA NA NA
Psammothidium helveticum Pennate Diatom 0.001 0.000 2 1 1 3 V P NA 35 41
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.