Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

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Model Results and Variables

 Blue = this sample. Boxplots = range of all samples. Grey shaded areas = range of reference sites

Additional Metrics

Stream Characteristics and Water Chemistry

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Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Phormidium tergestinium filamentous cyanobacteria 0.942 0.425 42.6 53 NA
Nitzschia palea var. debilis pennate diatom 0.005 0.005 1 1 1 H P 53.4 47 79
Navicula gregaria pennate diatom 0.004 0.015 4 3 3 5 M P 79.6 66 89
Hippodonta capitata pennate diatom 0.004 0.015 3 3 2 4 M P 66.8 61 89
Achnanthidium minutissimum pennate diatom 0.004 0.003 1 2 2 7 N P 41.2 NA NA
Fragilaria vaucheriae pennate diatom 0.004 0.010 3 3 2 5 N V 44.2 36 NA
Nitzschia capitellata pennate diatom 0.003 0.009 5 4 6 H P 75.7 49 76
Melosira varians centric diatom 0.002 0.021 3 3 2 5 N U 67 67 89
Meridion circulare pennate diatom 0.002 0.018 2 2 2 7 N E 46.5 64 87
Planothidium frequentissimum pennate diatom 0.002 0.003 3 4 2 V P 65.1 69 92
Gomphonema angustatum pennate diatom 0.002 0.006 1 1 2 1 N S 58 50 84
Gomphonema parvulum pennate diatom 0.002 0.005 4 4 2 5 N S 42.2 21 NA
Navicula rostellata pennate diatom 0.002 0.017 2 2 2 5 M P 66.1 48 92
Cymatopleura solea pennate diatom 0.002 0.290 3 2 2 5 H P NA NA NA
Staurosirella pinnata pennate diatom 0.001 0.003 1 2 2 7 N V 44.2 38 56
Navicula lanceolata pennate diatom 0.001 0.032 3 3 3 5 M P 77.5 75 98
Nitzschia dissipata var. media pennate diatom 0.001 0.003 2 H P 64.7 NA NA
Nitzschia supralitorea pennate diatom 0.001 0.000 2 3 2 5 H P 65.4 62 89
Navicula erifuga pennate diatom 0.001 0.004 3 5 M P 66.5 NA NA
Sellaphora pupula pennate diatom 0.001 0.002 3 3 2 4 M P 46.8 38 75
Gomphonema pumilum pennate diatom 0.001 0.003 2 7 N S 43.6 14 21
Nitzschia palea pennate diatom 0.001 0.002 4 5 2 6 H P 60.3 67 89
Encyonema minutum pennate diatom 0.001 0.005 2 V S 50.2 21 NA
Navicula trivialis pennate diatom 0.001 0.009 3 3 3 5 M P 78.6 68 98
Navicula veneta pennate diatom 0.001 0.002 4 4 3 5 M P 79.7 51 62
Fragilaria capucina var. gracilis pennate diatom 0.001 0.002 1 1 2 2 N V 30.6 18 22
Amphora pediculus pennate diatom 0.001 0.001 2 2 2 5 M P 76.2 71 93
Rhoicosphenia abbreviata pennate diatom 0.001 0.004 2 2 2 5 V S 83.4 72 96
Cocconeis placentula var. euglypta pennate diatom 0.001 0.004 3 2 2 5 N P 58.2 45 81
Navicula cryptocephala pennate diatom 0.001 0.003 3 3 2 7 M P 56.3 55 80
Surirella brebissonii pennate diatom 0.001 0.012 3 H P 100 50 80
Staurosira construens var. venter pennate diatom 0.001 0.001 1 2 2 4 N V 41.3 35 67
Gomphonema gracile pennate diatom 0.000 0.001 1 1 2 3 N S 21.9 13 20
Psammodictyon constrictum pennate diatom 0.000 0.001 3 3 4 5 H P NA NA NA
Placoneis clementioides pennate diatom 0.000 0.002 M P NA NA NA
Nitzschia frustulum pennate diatom 0.000 0.000 3 2 3 5 H P 50.4 53 88
Nitzschia gracilis pennate diatom 0.000 0.000 2 2 1 3 H P 46.9 22 64
Nitzschia intermedia pennate diatom 0.000 0.002 2 2 5 H P NA 66 89
Nitzschia terrestris pennate diatom 0.000 0.005 1 2 H P NA NA NA
Nitzschia acicularis pennate diatom 0.000 0.000 4 3 2 5 H P NA 19 85
Tryblionella levidensis pennate diatom 0.000 0.003 3 3 3 5 H P NA NA NA
Luticola mutica pennate diatom 0.000 0.002 1 3 3 5 M P 62.2 59 95
Stauroneis smithii pennate diatom 0.000 0.001 1 2 2 7 M P NA 33 92
Reimeria sinuata pennate diatom 0.000 0.001 1 2 2 3 M P 60.9 65 88
Cyclotella meneghiniana centric diatom 0.000 0.000 5 4 3 5 N U 72.6 55 73
Navicula antonii pennate diatom 0.000 0.000 M P 65.4 54 89
Rhopalodia gibba pennate diatom 0.000 0.007 3 2 2 5 M P NA NA NA
Amphora copulata pennate diatom 0.000 0.005 2 2 2 5 M P 53.5 48 73
Cymbella tumida pennate diatom 0.000 0.018 1 1 2 4 V S 57.8 48 78
Navicula tenelloides pennate diatom 0.000 0.000 1 1 2 5 M P 75.8 51 62
Nitzschia palea var. tenuirostris pennate diatom 0.000 0.001 2 H P NA NA NA
Nitzschia pellucida pennate diatom 0.000 0.002 H P NA NA NA
Neidium ampliatum pennate diatom 0.000 0.003 2 2 M P NA NA NA
Frustulia vulgaris pennate diatom 0.000 0.003 1 2 2 4 M P 51.7 62 87
Nitzschia sociabilis pennate diatom 0.000 0.001 2 2 2 5 H P NA NA NA
Nitzschia solita pennate diatom 0.000 0.000 3 5 H P NA NA NA
Gomphonema acuminatum pennate diatom 0.000 0.009 2 2 2 5 N S 26.7 13 15
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.