Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: China Lake Outlet Stream - Station 604 Sampled by: Biomonitoring Unit
Town: Winslow Method: Rock Scrapings 1 Inch Circles
Sample Date: 2017-06-21 Sample ID: SA-604-2017R (1660)
Location: Downstream Of Rt 137. Park At Home Store And Cross Street. Walk Straight Down.

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 = 0.72
Prob. Class C = 0.28
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 = 12 m
Wetted width = 10 m
Depth = 32 cm
Water velocity = 47 cm/s
Riffle = 50 %
Run = 50 %
Canopy Cover = 28 %
Boulder = 40 %
Cobble = 50 %
Gravel = 5 %
Sand = 5 %

Viewing Bucket and Land Use
Statutory Class: B
Nutrient Response Indicator Criterion: <24% Nuisance Algae Cover
Nuisance Algae in Survey: 31.1 % cover
Meets Nutrient Response Indicator Criterion: No

Site Information
Name: China Lake Outlet Stream - Station 604 Sampled by: Biomonitoring Unit
Town: Winslow Method: Rock Scrapings 1 Inch Circles
Sample Date: 2017-06-21 Sample ID: SA-604-2017R (1660)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Phormidium Filamentous Cyanobacteria 0.198 0.017 42.6 60 NA
Homoeothrix Filamentous Cyanobacteria 0.189 0.002 NA NA NA
Achnanthidium minutissimum Pennate Diatom 0.122 0.005 1 2 2 7 N P 41.2 NA NA
Achnanthidium rivulare Pennate Diatom 0.115 0.007 N P 49.9 39 49
Bulbochaete Filamentous Green 0.076 0.005 25.1 11 8
Encyonema silesiacum Pennate Diatom 0.033 0.013 3 3 2 7 V S 46.9 43 69
Cocconeis placentula Pennate Diatom 0.031 0.018 3 2 2 5 N P NA 30 82
Ulnaria ulna Pennate Diatom 0.028 0.460 3 4 2 N E 34.2 17 21
Reimeria sinuata Pennate Diatom 0.025 0.004 1 2 2 3 M P 60.9 65 88
Gomphonema parvulum Pennate Diatom 0.017 0.003 4 4 2 5 N S 42.2 21 NA
Achnanthidium subhudsonis var. kraeuselii Pennate Diatom 0.016 0.001 V P 57 33 89
Navicula cryptotenella Pennate Diatom 0.012 0.002 2 2 7 M P 44.6 61 82
Nitzschia palea Pennate Diatom 0.012 0.003 4 5 2 6 H P 60.3 67 89
Unknown Rhodophyte Florideophycidae (Chantransia) Red Algae 0.011 0.003 47.5 48 68
Fragilaria gracilis Pennate Diatom 0.010 0.002 1 1 2 2 N V 30.6 18 22
Ulnaria acus Pennate Diatom 0.008 0.010 2 3 2 5 N E 31.7 29 48
Gomphonema pumilum Pennate Diatom 0.007 0.001 2 7 N S 43.6 14 21
Fragilaria vaucheriae Pennate Diatom 0.006 0.001 3 3 2 5 N V 44.2 36 NA
Staurosira construens var. venter Pennate Diatom 0.006 0.000 1 2 2 4 N V 41.3 35 67
Rossithidium pusillum Pennate Diatom 0.005 0.000 1 1 2 1 V P NA 21 52
Sellaphora atomoides Pennate Diatom 0.005 0.000 M P NA NA NA
Pseudostaurosira brevistriata Pennate Diatom 0.004 0.000 1 1 2 7 N E 32.2 46 45
Pseudostaurosira trainorii Pennate Diatom 0.004 0.001 N E NA NA NA
Navicula germainii Pennate Diatom 0.004 0.002 M P NA 51 85
Staurosirella pinnata Pennate Diatom 0.003 0.000 1 2 2 7 N V 44.2 38 56
Amphora pediculus Pennate Diatom 0.003 0.000 2 2 2 5 M P 76.2 71 93
Navicula cryptocephala Pennate Diatom 0.003 0.001 3 3 2 7 M P 56.3 55 80
Navicula gregaria Pennate Diatom 0.003 0.000 4 3 3 5 M P 79.6 66 89
Navicula radiosa Pennate Diatom 0.003 0.002 2 2 2 4 M P 41.8 34 73
Cyclotella meneghiniana Centric Diatom 0.003 0.001 5 4 3 5 N U 72.6 55 73
Nitzschia perminuta Pennate Diatom 0.003 0.000 1 1 2 2 H P 56.7 53 76
Diatoma vulgaris Pennate Diatom 0.002 0.005 2 2 2 4 N U 88.7 60 89
Fragilaria capucina var. fragilarioides Pennate Diatom 0.002 0.000 N V NA NA NA
Tabellaria flocculosa Pennate Diatom 0.002 0.000 1 2 1 3 N U 18.8 17 32
Geissleria decussis Pennate Diatom 0.002 0.021 1 2 4 M P 44.5 40 80
Navicula reichardtiana Pennate Diatom 0.002 0.000 3 2 M P 55.7 51 71
Melosira varians Centric Diatom 0.002 0.007 3 3 2 5 N U 67 67 89
Navicula symmetrica Pennate Diatom 0.002 0.001 M P NA NA NA
Nitzschia frustulum Pennate Diatom 0.002 0.000 3 2 3 5 H P 50.4 53 88
Discostella stelligeroides Centric Diatom 0.001 0.001 N U NA NA NA
Diatoma moniliformis Pennate Diatom 0.001 0.000 3 N U 52.8 27 36
Synedra ulna var. ramesi Pennate Diatom 0.001 0.001 N E NA NA NA
Ulnaria delicatissima var. angustissima Pennate Diatom 0.001 0.019 N E NA NA NA
Achnanthidium pyrenaicum Pennate Diatom 0.001 0.000 N P NA 62 80
Planothidium frequentissimum Pennate Diatom 0.001 0.012 3 4 2 V P 65.1 69 92
Cymbella tumida Pennate Diatom 0.001 0.150 1 1 2 4 V S 57.8 48 78
Cymbella subturgidula Pennate Diatom 0.001 0.037 V S 23.6 26 35
Gomphonema acuminatum Pennate Diatom 0.001 0.001 2 2 2 5 N S 26.7 13 15
Gomphonema augur Pennate Diatom 0.001 0.170 1 2 2 4 N S NA NA NA
Diadesmis confervacea Pennate Diatom 0.001 0.000 3 3 3 5 M P NA NA NA
Navicula trivialis Pennate Diatom 0.001 0.001 3 3 3 5 M P 78.6 68 98
Navicula viridula Pennate Diatom 0.001 0.001 2 3 2 5 M P 70.7 74 NA
Placoneis elginensis Pennate Diatom 0.001 0.000 2 2 2 5 M P NA NA NA
Sellaphora Pennate Diatom 0.001 0.000 M P NA NA NA
Sellaphora pupula Pennate Diatom 0.001 0.000 3 3 2 4 M P 46.8 38 75
Surirella angusta Pennate Diatom 0.001 0.001 2 2 2 5 H P 65.4 57 96
Nitzschia acicularis Pennate Diatom 0.001 0.000 4 3 2 5 H P NA 19 85
Nitzschia inconspicua Pennate Diatom 0.001 0.000 3 3 3 5 H P 83.7 69 98
Nitzschia linearis Pennate Diatom 0.001 0.000 2 2 2 4 H P 54.2 68 87
Nitzschia paleacea Pennate Diatom 0.001 0.000 3 3 2 5 H P 61.3 32 35
Nitzschia recta Pennate Diatom 0.001 0.001 2 2 2 7 H P 46.6 43 73
Monoraphidium minutum Colonial Green 0.000 0.000 NA NA NA
Staurastrum Desmid 0.000 0.004 NA NA NA
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.