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: 2007-07-05 Sample ID: SA-604-2007R (694)
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 = C
Attains Class = NO
Reason = Model
Model Result = C
Prob. Class A = 0.00
Prob. Class B = 0.09
Prob. Class C = 0.91
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 = 11 m
Wetted width = 10 m
Depth = 36 cm
Water velocity = 47 cm/s
Riffle = 40 %
Run = 45 %
Pool = 5 %
Canopy Cover = 26 %
Bedrock = 0 %
Boulder = 40 %
Cobble = 55 %
Gravel = 5 %
Sand = 0 %
Silt = 0 %
Clay = 0 %

Viewing Bucket and Land Use
Statutory Class: B
Nutrient Response Indicator Criterion: <24% Nuisance Algae Cover
Nuisance Algae in Survey: 27.3 % 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: 2007-07-05 Sample ID: SA-604-2007R (694)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Homoeothrix janthina Filamentous Cyanobacteria 0.324 0.001 43 19 21
Phormidium Filamentous Cyanobacteria 0.195 0.007 42.6 60 NA
Achnanthidium minutissimum Pennate Diatom 0.077 0.006 1 2 2 7 N P 41.2 NA NA
Reimeria sinuata Pennate Diatom 0.046 0.003 1 2 2 3 M P 60.9 65 88
Scenedesmus ecornis Colonial Green 0.035 0.000 39.9 23 69
Gongrosira Filamentous Green 0.026 0.021 37.3 37 NA
Navicula menisculus Pennate Diatom 0.025 0.003 3 3 2 5 M P 64.3 44 72
Cocconeis placentula var. lineata Pennate Diatom 0.024 0.011 3 2 2 5 N P 51.5 62 82
Nitzschia palea var. debilis Pennate Diatom 0.023 0.001 1 1 1 H P 53.4 47 79
Gloeocystis Colonial Green 0.021 0.002 39.6 68 73
Encyonema silesiacum Pennate Diatom 0.020 0.045 3 3 2 7 V S 46.9 43 69
Navicula cryptocephala Pennate Diatom 0.017 0.002 3 3 2 7 M P 56.3 55 80
Scenedesmus acutus Colonial Green 0.015 0.000 NA NA 61
Scenedesmus quadricauda Colonial Green 0.015 0.000 46.4 26 36
Fragilaria capucina Pennate Diatom 0.012 0.001 2 2 3 N V 32.9 59 51
Stauridium tetras Colonial Green 0.010 0.000 35.2 NA NA
Fragilaria vaucheriae Pennate Diatom 0.008 0.001 3 3 2 5 N V 44.2 36 NA
Nitzschia paleacea Pennate Diatom 0.008 0.000 3 3 2 5 H P 61.3 32 35
Achnanthidium rivulare Pennate Diatom 0.006 0.000 N P 49.9 39 49
Ankistrodesmus falcatus Colonial Green 0.006 0.000 45.7 58 75
Gomphonema kobayasii Pennate Diatom 0.006 0.000 N S 71.2 50 79
Cymbella tumida Pennate Diatom 0.005 0.006 1 1 2 4 V S 57.8 48 78
Nitzschia palea Pennate Diatom 0.005 0.000 4 5 2 6 H P 60.3 67 89
Chamaesiphon incrustans Cyanobacteria 0.004 0.000 NA 37 53
Geissleria decussis Pennate Diatom 0.004 0.000 1 2 4 M P 44.5 40 80
Spirogyra Filamentous Green 0.004 0.129 42.6 28 41
Cladophora glomerata Filamentous Green 0.003 0.694 80 53 93
Gomphonema minusculum Pennate Diatom 0.003 0.000 N S NA 38 51
Navicula antonii Pennate Diatom 0.003 0.000 M P 65.4 54 89
Eolimna minima Pennate Diatom 0.003 0.000 4 4 2 5 M P 57 64 88
Nitzschia recta Pennate Diatom 0.003 0.002 2 2 2 7 H P 46.6 43 73
Nitzschia supralitorea Pennate Diatom 0.003 0.000 2 3 2 5 H P 65.4 62 89
Encyonema reichardtii Pennate Diatom 0.002 0.002 1 1 2 3 V S 76.1 66 71
Gomphonema parvulum Pennate Diatom 0.002 0.000 4 4 2 5 N S 42.2 21 NA
Navicula germainii Pennate Diatom 0.002 0.000 M P NA 51 85
Navicula symmetrica Pennate Diatom 0.002 0.000 M P NA NA NA
Nitzschia intermedia Pennate Diatom 0.002 0.001 2 2 5 H P NA 66 89
Staurosirella pinnata Pennate Diatom 0.002 0.000 1 2 2 7 N V 44.2 38 56
Achnanthidium subhudsonis var. kraeuselii Pennate Diatom 0.001 0.000 V P 57 33 89
Amphora pediculus Pennate Diatom 0.001 0.000 2 2 2 5 M P 76.2 71 93
Ankistrodesmus sp. 1 ANS FWA Adirondack Colonial Green 0.001 0.001 47.5 NA NA
Aulacoseira subarctica Centric Diatom 0.001 0.000 1 1 1 2 N U NA NA NA
Cocconeis pediculus Pennate Diatom 0.001 0.001 2 2 3 5 N P 72.3 68 88
Cosmarium granatum Desmid 0.001 0.000 NA 18 15
Cyclotella bodanica var. lemanica Centric Diatom 0.001 0.020 1 1 1 1 N U 14.3 21 20
Cyclotella meneghiniana Centric Diatom 0.001 0.000 5 4 3 5 N U 72.6 55 73
Cymatopleura solea Pennate Diatom 0.001 0.010 3 2 2 5 H P NA NA NA
Cymbella subturgidula Pennate Diatom 0.001 0.001 V S 23.6 26 35
Fragilaria mesolepta Pennate Diatom 0.001 0.000 2 N V NA NA NA
Pseudostaurosira microstriata Pennate Diatom 0.001 0.000 N V NA NA NA
Frustulia vulgaris Pennate Diatom 0.001 0.000 1 2 2 4 M P 51.7 62 87
Gomphonema gracile Pennate Diatom 0.001 0.000 1 1 2 3 N S 21.9 13 20
Gomphonema olivaceoides var. hutchinsoniana Pennate Diatom 0.001 0.000 N S 51.6 43 75
Hippodonta capitata Pennate Diatom 0.001 0.000 3 3 2 4 M P 66.8 61 89
Melosira varians Centric Diatom 0.001 0.002 3 3 2 5 N U 67 67 89
Navicula gregaria Pennate Diatom 0.001 0.000 4 3 3 5 M P 79.6 66 89
Navicula trivialis Pennate Diatom 0.001 0.000 3 3 3 5 M P 78.6 68 98
Navicula viridulacalcis Pennate Diatom 0.001 0.004 M P 58.9 NA NA
Nitzschia acidoclinata Pennate Diatom 0.001 0.003 1 2 1 3 H P 51.6 40 56
Nitzschia agnita Pennate Diatom 0.001 0.000 4 H P NA NA NA
Nitzschia dissipata Pennate Diatom 0.001 0.000 2 2 2 4 H P 60.9 48 75
Pseudostaurosira brevistriata Pennate Diatom 0.001 0.000 1 1 2 7 N E 32.2 46 45
Rhoicosphenia abbreviata Pennate Diatom 0.001 0.000 2 2 2 5 V S 83.4 72 96
Staurastrum punctulatum Desmid 0.001 0.008 NA 15 21
Staurosira construens var. venter Pennate Diatom 0.001 0.000 1 2 2 4 N V 41.3 35 67
Synedra rumpens Pennate Diatom 0.001 0.000 2 2 N E 34.3 20 32
Synedra sp. 2 NAWQA MORALES Pennate Diatom 0.001 0.002 N E NA NA NA
Synedra sp. 8 NAWQA MORALES Pennate Diatom 0.001 0.004 N E NA 33 48
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.