Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: Aroostook River - Station 118 Sampled by: Biomonitoring Unit
Town: Masardis Method: Rock Scrapings 1 Inch Circles
Sample Date: 2004-07-22 Sample ID: SA-118-2004R (286)
Location: 45 M Below Confluence With St. Croix Stream

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 = AA
Final Determination = A
Attains Class = YES
Reason = Model
Model Result = A
Prob. Class A = 1.00
Prob. Class B = 0.00
Prob. Class C = 0.00
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

Wetted width = 71 m
Depth = 60 cm
Water velocity = 106 cm/s
Riffle = 20 %
Run = 80 %
Pool = 0 %
Canopy Cover = 0 %
Bedrock = 0 %
Boulder = 38 %
Cobble = 55 %
Gravel = 8 %
Sand = 0 %
Silt = 0 %
Clay = 0 %

Viewing Bucket and Land Use
Statutory Class: AA
Nutrient Response Indicator Criterion: <19% Nuisance Algae Cover
Nuisance Algae in Survey: 11.7 % cover
Meets Nutrient Response Indicator Criterion: Yes

Site Information
Name: Aroostook River - Station 118 Sampled by: Biomonitoring Unit
Town: Masardis Method: Rock Scrapings 1 Inch Circles
Sample Date: 2004-07-22 Sample ID: SA-118-2004R (286)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Planktolyngbya Filamentous Cyanobacteria 0.210 0.004 NA NA NA
Leptolyngbya Filamentous Cyanobacteria 0.092 0.003 38.3 28 75
Homoeothrix sp. 2 MESJAH Filamentous Cyanobacteria 0.080 0.014 NA NA NA
Achnanthidium minutissimum Pennate Diatom 0.072 0.015 1 2 2 7 N P 41.2 NA NA
Limnothrix Filamentous Cyanobacteria 0.069 0.004 NA NA NA
Scenedesmus ecornis Colonial Green 0.065 0.008 39.9 23 69
Homoeothrix janthina Filamentous Cyanobacteria 0.060 0.006 43 19 21
Merismopedia duplex Cyanobacteria 0.060 0.001 NA NA NA
Aphanocapsa elachista Cyanobacteria 0.055 0.001 34.4 NA NA
Coelomoron pusillum Cyanobacteria 0.037 0.001 NA NA NA
Bulbochaete Filamentous Green 0.024 0.497 25.1 11 8
Coelomoron microcystoides Cyanobacteria 0.023 0.000 NA NA NA
Stigeoclonium Filamentous Green 0.016 0.035 42.6 NA NA
Phormidium minnesotense Filamentous Cyanobacteria 0.015 0.000 42.6 NA NA
Gomphonema rhombicum Pennate Diatom 0.014 0.031 N S 32.1 28 36
Phormidium Filamentous Cyanobacteria 0.012 0.002 42.6 60 NA
Undetermined bg filament 1-2 µm Cyanobacteria 0.009 0.001 NA NA NA
Brachysira microcephala Pennate Diatom 0.007 0.004 2 1 2 2 M P 18 12 18
Craticula submolesta Pennate Diatom 0.006 0.001 M P 26.6 NA NA
Gomphonema angustum Pennate Diatom 0.006 0.011 1 1 2 1 N S 37.1 NA NA
Aphanothece clathrata Cyanobacteria 0.005 0.000 43.1 NA NA
Scenedesmus quadricauda Colonial Green 0.005 0.002 46.4 26 36
Undetermined Green (probably Stigeoclonium basal) Colonial Green 0.005 0.001 NA NA NA
Tabellaria flocculosa Pennate Diatom 0.004 0.020 1 2 1 3 N U 18.8 17 32
Chroococcus minor Cyanobacteria 0.003 0.000 30.1 NA NA
Fragilaria gracilis Pennate Diatom 0.003 0.002 1 1 2 2 N V 30.6 18 22
Fragilaria sepes Pennate Diatom 0.003 0.002 1 1 1 2 N V 32.1 18 39
Oedogonium 5-7 µm Filamentous Green 0.003 0.007 37.6 27 47
Tetraedron minimum Unicellular Green 0.003 0.004 19.5 NA NA
Chlamydomonas sp. 807um Unicellular Green 0.002 0.004 54.5 NA NA
Diatoma moniliformis Pennate Diatom 0.002 0.001 3 N U 52.8 27 36
Encyonema silesiacum Pennate Diatom 0.002 0.002 3 3 2 7 V S 46.9 43 69
Synedra rumpens Pennate Diatom 0.002 0.001 2 2 N E 34.3 20 32
Gomphonema pumilum Pennate Diatom 0.002 0.002 2 7 N S 43.6 14 21
Oocystis Colonial Green 0.002 0.000 NA NA NA
Scenedesmus brevispina Colonial Green 0.002 0.001 NA NA NA
Scenedesmus spinosus Colonial Green 0.002 0.000 45.7 NA NA
Achnanthes maculata Pennate Diatom 0.001 0.001 V P NA NA NA
Achnanthes nollii Pennate Diatom 0.001 0.000 V P 26.9 NA NA
Cosmarium angulosum Desmid 0.001 0.001 26 18 15
Cosmarium phaseolus fo. minus Desmid 0.001 0.002 NA 18 15
Encyonema neogracile Pennate Diatom 0.001 0.004 1 1 1 2 V S 24 7 NA
Cymbella simonsenii Pennate Diatom 0.001 0.011 V S NA NA NA
Fragilaria tenera Pennate Diatom 0.001 0.001 1 1 1 2 N V 31.9 27 41
Gomphonema parvulum Pennate Diatom 0.001 0.001 4 4 2 5 N S 42.2 21 NA
Mougeotia 15-25 µm Filamentous Green 0.001 0.244 26.9 10 12
Navicula cryptocephala Pennate Diatom 0.001 0.001 3 3 2 7 M P 56.3 55 80
Staurastrum Desmid 0.001 0.000 NA NA NA
Ulnaria ulna Pennate Diatom 0.001 0.017 3 4 2 N E 34.2 17 21
Undetermined bluegreen filament Cyanobacteria 0.001 0.000 NA NA NA
Closterium moniliferum Desmid 0.001 0.010 35.9 36 NA
Closterium venus Desmid 0.001 0.001 NA 25 33
Eunotia minor Pennate Diatom 0.001 0.005 1 1 V E 42.4 19 34
Mougeotia 5-7 µm Filamentous Green 0.001 0.004 26.9 10 12
Encyonopsis cesatii Pennate Diatom 0.000 0.000 1 1 1 1 V S 38 NA NA
Eucocconeis laevis Pennate Diatom 0.000 0.000 1 1 1 1 V P 29.5 17 18
Gomphonema acuminatum Pennate Diatom 0.000 0.003 2 2 2 5 N S 26.7 13 15
Gomphonema angustatum Pennate Diatom 0.000 0.000 1 1 2 1 N S 58 50 84
Navicula cryptotenella Pennate Diatom 0.000 0.000 2 2 7 M P 44.6 61 82
Eolimna minima Pennate Diatom 0.000 0.000 4 4 2 5 M P 57 64 88
Navicula radiosa Pennate Diatom 0.000 0.001 2 2 2 4 M P 41.8 34 73
Planothidium frequentissimum Pennate Diatom 0.000 0.000 3 4 2 V P 65.1 69 92
Psammothidium subatomoides Pennate Diatom 0.000 0.000 1 1 1 2 V P 42.4 20 35
Psammothidium ventralis Pennate Diatom 0.000 0.000 1 1 1 2 V P 53.3 NA NA
Pseudostaurosira elliptica Pennate Diatom 0.000 0.000 1 2 2 4 N V 44.9 NA NA
Staurosirella pinnata Pennate Diatom 0.000 0.000 1 2 2 7 N V 44.2 38 56
Psammothidium grischunum fo. daonensis Pennate Diatom 0.000 0.000 1 1 1 1 V P 30.2 31 39
Navicula harderii Pennate Diatom 0.000 0.000 1 M P NA NA NA
Navicula laterostrata Pennate Diatom 0.000 0.001 1 1 2 M P 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.