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: 2012-07-20 Sample ID: SA-604-2012R (1157)
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 = 0.62
Prob. Class C = 0.38
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 = 9 m
Wetted width = 9 m
Depth = 32 cm
Water velocity = 39 cm/s
Riffle = 50 %
Run = 40 %
Pool = 10 %
Canopy Cover = 14 %
Bedrock = 0 %
Boulder = 35 %
Cobble = 45 %
Gravel = 15 %
Sand = 5 %
Silt = 0 %
Clay = 0 %

Viewing Bucket and Land Use
Statutory Class: B
Nutrient Response Indicator Criterion: <24% Nuisance Algae Cover
Nuisance Algae in Survey: 0 % cover
Meets Nutrient Response Indicator Criterion: Yes

Site Information
Name: China Lake Outlet Stream - Station 604 Sampled by: Biomonitoring Unit
Town: Winslow Method: Rock Scrapings 1 Inch Circles
Sample Date: 2012-07-20 Sample ID: SA-604-2012R (1157)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Cocconeis placentula Pennate Diatom 0.269 0.127 3 2 2 5 N P NA 30 82
Phormidium Filamentous Cyanobacteria 0.147 0.010 42.6 60 NA
Homoeothrix janthina Filamentous Cyanobacteria 0.132 0.001 43 19 21
Gongrosira Filamentous Green 0.101 0.090 37.3 37 NA
Achnanthidium minutissimum Pennate Diatom 0.053 0.002 1 2 2 7 N P 41.2 NA NA
Oedogonium Filamentous Green 0.036 0.649 37.6 27 47
Achnanthidium rivulare Pennate Diatom 0.035 0.001 N P 49.9 39 49
Navicula cryptotenella Pennate Diatom 0.016 0.003 2 2 7 M P 44.6 61 82
Staurosira construens var. venter Pennate Diatom 0.014 0.001 1 2 2 4 N V 41.3 35 67
Encyonema silesiacum Pennate Diatom 0.012 0.007 3 3 2 7 V S 46.9 43 69
Navicula cryptocephala Pennate Diatom 0.012 0.004 3 3 2 7 M P 56.3 55 80
Navicula escambia Pennate Diatom 0.012 0.017 1 2 3 5 M P 67.3 42 93
Reimeria sinuata Pennate Diatom 0.012 0.001 1 2 2 3 M P 60.9 65 88
Gomphonema sp. 2 ANS NEW JERSEY KCP Pennate Diatom 0.010 0.001 N S 15.1 24 29
Synedra rumpens Pennate Diatom 0.010 0.001 2 2 N E 34.3 20 32
Navicula germainii Pennate Diatom 0.008 0.003 M P NA 51 85
Scenedesmus denticulatus Colonial Green 0.008 0.001 NA NA NA
Navicula antonii Pennate Diatom 0.007 0.000 M P 65.4 54 89
Cyclotella meneghiniana Centric Diatom 0.006 0.004 5 4 3 5 N U 72.6 55 73
Gomphonema kobayasii Pennate Diatom 0.006 0.001 N S 71.2 50 79
Gomphonema minutum Pennate Diatom 0.006 0.001 2 2 5 N S 54.6 61 55
Planothidium frequentissimum Pennate Diatom 0.006 0.000 3 4 2 V P 65.1 69 92
Encyonema minutum Pennate Diatom 0.005 0.001 2 V S 50.2 21 NA
Fragilaria mesolepta Pennate Diatom 0.005 0.001 2 N V NA NA NA
Gomphonema parvulum Pennate Diatom 0.005 0.001 4 4 2 5 N S 42.2 21 NA
Melosira varians Centric Diatom 0.005 0.019 3 3 2 5 N U 67 67 89
Cocconeis placentula var. euglypta Pennate Diatom 0.004 0.002 3 2 2 5 N P 58.2 45 81
Gomphonema rhombicum Pennate Diatom 0.004 0.002 N S 32.1 28 36
Hippodonta capitata Pennate Diatom 0.004 0.001 3 3 2 4 M P 66.8 61 89
Navicula amphiceropsis Pennate Diatom 0.004 0.024 M P NA NA NA
Navicula gregaria Pennate Diatom 0.004 0.001 4 3 3 5 M P 79.6 66 89
Nitzschia acidoclinata Pennate Diatom 0.004 0.001 1 2 1 3 H P 51.6 40 56
Tabularia fasciculata Pennate Diatom 0.003 0.002 3 3 4 5 N U NA NA NA
Eolimna minima Pennate Diatom 0.003 0.000 4 4 2 5 M P 57 64 88
Fragilaria vaucheriae Pennate Diatom 0.003 0.000 3 3 2 5 N V 44.2 36 NA
Rhoicosphenia abbreviata Pennate Diatom 0.003 0.001 2 2 2 5 V S 83.4 72 96
Achnanthidium subhudsonis var. kraeuselii Pennate Diatom 0.002 0.000 V P 57 33 89
Achnanthidium affine Pennate Diatom 0.002 0.000 1 2 N P 64.7 NA 67
Aulacoseira ambigua Centric Diatom 0.002 0.001 3 2 2 5 N U 34.5 25 56
Caloneis bacillum Pennate Diatom 0.002 0.001 2 2 2 4 M P 64.9 72 96
Cyclotella striata Centric Diatom 0.002 0.003 N U NA NA NA
Cymbella tumida Pennate Diatom 0.002 0.005 1 1 2 4 V S 57.8 48 78
Encyonema reichardtii Pennate Diatom 0.002 0.000 1 1 2 3 V S 76.1 66 71
Navicula rostellata Pennate Diatom 0.002 0.002 2 2 2 5 M P 66.1 48 92
Navicula veneta Pennate Diatom 0.002 0.000 4 4 3 5 M P 79.7 51 62
Nitzschia liebethruthii Pennate Diatom 0.002 0.000 H P 65.8 39 91
Tabellaria flocculosa (strain IV) Pennate Diatom 0.001 0.000 1 2 1 3 N U 18.8 9 5
Brachysira microcephala Pennate Diatom 0.001 0.000 2 1 2 2 M P 18 12 18
Cocconeis placentula var. lineata Pennate Diatom 0.001 0.001 3 2 2 5 N P 51.5 62 82
Epithemia adnata Pennate Diatom 0.001 0.001 2 2 2 4 M P NA NA NA
Fragilaria gracilis Pennate Diatom 0.001 0.000 1 1 2 2 N V 30.6 18 22
Meridion circulare var. constrictum Pennate Diatom 0.001 0.001 2 2 2 7 N E 43.7 50 72
Navicula notha Pennate Diatom 0.001 0.000 M P 37.4 20 34
Nitzschia palea Pennate Diatom 0.001 0.000 4 5 2 6 H P 60.3 67 89
Nitzschia palea var. debilis Pennate Diatom 0.001 0.000 1 1 1 H P 53.4 47 79
Sellaphora seminulum Pennate Diatom 0.001 0.001 4 4 2 5 M P 51.5 67 73
Staurosirella pinnata Pennate Diatom 0.001 0.000 1 2 2 7 N V 44.2 38 56
Synedra ulna var. ramesi Pennate Diatom 0.001 0.001 N E NA NA NA
Tabellaria flocculosa Pennate Diatom 0.001 0.001 1 2 1 3 N U 18.8 17 32
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.