Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: Tannery Brook - Station 474 Sampled by: Biomonitoring Unit
Town: Gorham Method: Rock Scrapings 1 Inch Circles
Sample Date: 2010-06-29 Sample ID: SA-474-2010R (946)
Location: L1/Libby Ave To Queen Street Drive

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 = C
Attains Class = NO
Reason = Model
Model Result = C
Prob. Class A = 0.00
Prob. Class B = 0.00
Prob. Class C = 0.97
Prob. NA = 0.03
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 = 6 m
Wetted width = 5 m
Depth = 32 cm
Water velocity = 37 cm/s
Riffle = 40 %
Run = 40 %
Pool = 20 %
Canopy Cover = 66 %
Bedrock = 0 %
Boulder = 20 %
Cobble = 30 %
Gravel = 20 %
Sand = 30 %
Silt = 0 %
Clay = 0 %

Viewing Bucket and Land Use
Statutory Class: B
Nutrient Response Indicator Criterion: <24% Nuisance Algae Cover
Nuisance Algae in Survey: 9.8 % cover
Meets Nutrient Response Indicator Criterion: Yes

Site Information
Name: Tannery Brook - Station 474 Sampled by: Biomonitoring Unit
Town: Gorham Method: Rock Scrapings 1 Inch Circles
Sample Date: 2010-06-29 Sample ID: SA-474-2010R (946)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Unknown Rhodophyte Florideophycidae (Chantransia) Red Algae 0.309 0.538 47.5 48 68
Heteroleibleinia Filamentous Cyanobacteria 0.202 0.007 NA 22 22
Achnanthidium rivulare Pennate Diatom 0.123 0.023 N P 49.9 39 49
Chamaesiphon incrustans Cyanobacteria 0.070 0.009 NA 37 53
Achnanthidium minutissimum Pennate Diatom 0.065 0.007 1 2 2 7 N P 41.2 NA NA
Chamaesiphon Cyanobacteria 0.044 0.010 NA NA NA
Chamaesiphon amethystinus Cyanobacteria 0.024 0.010 NA NA NA
Encyonema silesiacum Pennate Diatom 0.016 0.016 3 3 2 7 V S 46.9 43 69
Navicula gregaria Pennate Diatom 0.013 0.012 4 3 3 5 M P 79.6 66 89
Navicula cryptocephala Pennate Diatom 0.011 0.012 3 3 2 7 M P 56.3 55 80
Meridion circulare var. constrictum Pennate Diatom 0.010 0.007 2 2 2 7 N E 43.7 50 72
Navicula rhynchocephala Pennate Diatom 0.010 0.011 4 2 2 7 M P 62.1 44 78
Cocconeis placentula var. lineata Pennate Diatom 0.007 0.033 3 2 2 5 N P 51.5 62 82
Gomphonema parvulius Pennate Diatom 0.006 0.000 N S NA 17 22
Prestauroneis protracta Pennate Diatom 0.006 0.001 3 2 3 5 M P NA NA NA
Cocconeis placentula var. euglypta Pennate Diatom 0.005 0.013 3 2 2 5 N P 58.2 45 81
Fragilaria gracilis Pennate Diatom 0.005 0.001 1 1 2 2 N V 30.6 18 22
Gomphonema micropus Pennate Diatom 0.005 0.005 2 2 2 5 N S 39 72 89
Gongrosira Filamentous Green 0.005 0.020 37.3 37 NA
Caloneis bacillum Pennate Diatom 0.004 0.007 2 2 2 4 M P 64.9 72 96
Nitzschia recta Pennate Diatom 0.004 0.026 2 2 2 7 H P 46.6 43 73
Achnanthidium pyrenaicum Pennate Diatom 0.003 0.001 N P NA 62 80
Melosira varians Centric Diatom 0.003 0.063 3 3 2 5 N U 67 67 89
Navicula symmetrica Pennate Diatom 0.003 0.006 M P NA NA NA
Achnanthidium reimeri Pennate Diatom 0.002 0.000 1 2 V P NA 33 24
Eunotia minor Pennate Diatom 0.002 0.003 1 1 V E 42.4 19 34
Eunotia pectinalis var. undulata Pennate Diatom 0.002 0.024 1 2 1 1 V E 24.3 22 35
Navicula germainii Pennate Diatom 0.002 0.004 M P NA 51 85
Navicula lanceolata Pennate Diatom 0.002 0.007 3 3 3 5 M P 77.5 75 98
Eolimna minima Pennate Diatom 0.002 0.000 4 4 2 5 M P 57 64 88
Navicula reichardtiana Pennate Diatom 0.002 0.001 3 2 M P 55.7 51 71
Nitzschia fonticola Pennate Diatom 0.002 0.001 2 2 2 4 H P 82.2 49 80
Nitzschia intermedia Pennate Diatom 0.002 0.005 2 2 5 H P NA 66 89
Planothidium delicatulum Pennate Diatom 0.002 0.002 4 V P NA NA NA
Surirella angusta Pennate Diatom 0.002 0.009 2 2 2 5 H P 65.4 57 96
Synedra sp. 8 NAWQA MORALES Pennate Diatom 0.002 0.033 N E NA 33 48
Cocconeis pediculus Pennate Diatom 0.001 0.016 2 2 3 5 N P 72.3 68 88
Diatoma moniliformis Pennate Diatom 0.001 0.001 3 N U 52.8 27 36
Eunotia bilunaris Pennate Diatom 0.001 0.001 2 2 2 7 V E 37.6 17 28
Eunotia formica Pennate Diatom 0.001 0.034 1 1 2 3 V E NA 33 52
Frustulia vulgaris Pennate Diatom 0.001 0.002 1 2 2 4 M P 51.7 62 87
Gomphonema sp. 22 NAWQA MP Pennate Diatom 0.001 0.006 N S NA NA NA
Karayevia clevei Pennate Diatom 0.001 0.000 2 2 2 4 V P 54.3 NA 72
Luticola mutica Pennate Diatom 0.001 0.001 1 3 3 5 M P 62.2 59 95
Navicula canalis Pennate Diatom 0.001 0.001 2 5 M P NA 50 89
Navicula cryptotenelloides Pennate Diatom 0.001 0.000 M P 66 NA NA
Navicula rostellata Pennate Diatom 0.001 0.003 2 2 2 5 M P 66.1 48 92
Navicula veneta Pennate Diatom 0.001 0.001 4 4 3 5 M P 79.7 51 62
Nitzschia frustulum Pennate Diatom 0.001 0.000 3 2 3 5 H P 50.4 53 88
Pinnularia microstauron Pennate Diatom 0.001 0.002 3 2 2 7 M P NA 37 NA
Planothidium frequentissimum Pennate Diatom 0.001 0.000 3 4 2 V P 65.1 69 92
Pseudostaurosira parasitica Pennate Diatom 0.001 0.000 1 2 2 4 N E 49.6 NA NA
Pseudostaurosira trainorii Pennate Diatom 0.001 0.000 N E NA NA NA
Reimeria sinuata Pennate Diatom 0.001 0.001 1 2 2 3 M P 60.9 65 88
Stauroneis smithii Pennate Diatom 0.001 0.001 1 2 2 7 M P NA 33 92
Surirella brebissonii Pennate Diatom 0.001 0.006 3 H P 100 50 80
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.