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 Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: Fish River - Station 373 Sampled by: Biomonitoring Unit
Town: Wallagrass Method: Rock Scrapings 1 Inch Circles
Biomonitoring Basin St. John And Allagash Sample ID: SA-373-2004R (292)
Sample Date: 2004-07-21 Taxonomist: Michigan State University
Location: 2 Km Dwnstrm Eagle Lake - At Confluence Of Unnamed Brook From West Side
Sample comments:
Latitude: 47.12499647
Longitude: -68.57310933

Three figures from left to right: On the far left, an outline of the state of Maine with the site location marked in blue. In the middle, a satellite image view of the area of the site, with waterbodies marked in blue, and the site marked in red, with a scale bar and north arrow. On the right, a downstream image of the sample site.

Model Results and Variable Plots

 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 = A
Attains Class = YES
Reason = Model
Model Result = A
Prob. Class A = 0.82
Prob. Class B = 0.18
Prob. Class C = 0.00
Prob. NA = 0.00

Boxplots of stream algae model metrics, including range of values from all samples, from reference sites, and this specific sample. Stream algae model metrics are in a table below.

Additional Variable Plots

 Blue = this sample. Boxplots = range of all samples. Grey shaded areas = 90th and/or 10th percentile of reference site values.

Boxplots of additional stream algae metrics, including range of values from all samples, from reference sites, and this specific sample. Additional stream algae metrics are in a table below.

Model Variables Table
Variable Sample value All data median All data 10th percentile All data 90th percentile Reference range lower limit Reference range upper limit Reference range description
Salt-tolerant diatom percent abundance 3.48 0.90 0.00 9.15 0.00 1.08 <90th percentile
Nutrient-tolerant diatom richness 14.00 8.00 3.00 17.00 0.00 8.00 <90th percentile
Intermediate diatom richness 36.00 19.00 11.00 28.80 9.00 25.30 10th to 90th percentile
Intolerant algae percent species 26.79 18.75 3.70 42.27 22.12 72.41 >10th percentile
Motile diatom percent abundance 6.73 8.49 1.55 31.56 0.00 11.59 <90th percentile
Tolerant algae percent abundance 1.08 1.19 0.00 17.43 0.00 1.05 <90th percentile
Additional Variables Table
Variable Sample value All data median All data 10th percentile All data 90th percentile Reference range lower limit Reference range upper limit Reference range description
Tolerance Index (all algae) 39.29 42.67 37.09 49.07 0.00 42.34 <90th percentile
Nitrogen Index (all algae) 37.36 38.64 26.81 51.56 0.00 35.58 <90th percentile
Phosphorus Index (all algae) 53.72 58.62 38.59 76.56 0.00 53.06 <90th percentile
Intolerant algae percent species 15.00 6.00 1.00 14.00 5.00 23.00 >10th percentile
Intolerant algae richness 7.84 6.25 0.00 16.00 0.00 7.14 <90th percentile
Salt-tolerant diatom percent richness 78.59 89.95 61.14 98.30 45.42 97.96 10th to 90th percentile
Tolerant algae percent richness 8.93 16.67 0.00 41.38 0.00 14.29 <90th percentile
Nutrient- tolerant diatom percent abundance 9.32 42.06 7.59 84.31 0.00 48.33 <90th percentile
Stream Characteristics and Water Chemistry Plots

 Blue = this sample. Boxplots = range of all samples. Grey shaded areas = 10th to 90th percentile of reference site values

Wetted width = 74 m
Depth = 67 cm
Water velocity = 68 cm/s
Riffle = 80 %
Run = 20 %
Pool = 0 %
Canopy Cover = 0 %
Bedrock = 0 %
Boulder = 40 %
Cobble = 40 %
Gravel = 20 %
Sand = 0 %
Silt = 0 %
Clay = 0 %
Boxplots of stream water chemistry. Values are in a table below.
Water Chemistry Table
Parameter Sample Date Sample value All data median All data 10th percentile All data 90th percentile Reference 10th percentile Reference 90th percentile Units
Dissolved Oxygen 2004-07-21 8.8 8.60 7.00 10.23 7.80 10.62 Milligrams Per Liter
pH 2004-07-21 7.53 7.12 6.21 7.97 6.00 7.55 Standard Ph Unit
Specific Conductance 2004-07-21 51 88.55 25.00 492.00 15.41 67.31 Microsiemens Per Centimeter
Temperature 2004-07-21 24.9 20.00 14.70 24.70 12.80 23.60 Degrees Celcius (Temperature)
Dissolved Organic Carbon 2004-07-21 6.3 4.90 2.30 9.30 2.00 9.42 Milligrams Per Liter
Nitrate + Nitrite As Nitrogen 2004-07-21 0.01 0.08 0.02 0.61 0.01 0.09 Milligrams Per Liter
Orthophosphate As Phosphorus 2004-07-21 1 2.00 1.00 11.00 1.00 3.00 Micrograms Per Liter
Total Alkalinity 2004-07-21 24 19.50 4.44 113.20 2.00 21.00 Milligrams Per Liter
Total Kjeldahl Nitrogen 2004-07-21 0.3 0.40 0.20 0.60 0.10 0.50 Milligrams Per Liter
Total Phosphorus 2004-07-21 7 18.00 7.00 48.00 4.00 18.00 Micrograms Per Liter
Viewing Bucket

No viewing bucket data available

Barplot of viewing bucket substrate cover types, available in table on the right.

Land Use
Land Cover Data Source: MELCD 2004
Watershed Area (sq km): 1964.9
Impervious Cover %: 0
Land Use Table
Cover Type Percent Category
Highly Urban 0.02 Developed
Urban 0.05 Developed
Residential 0.75 Developed
Water 7.17 Natural
Wetland 6.19 Natural
Forest 80.17 Natural
Grass 1.33 Agriculture
Cleared 0.37 Agriculture
Tilled 4.18 Agriculture

Barplots of landcover data from watershed upstream of sample location. Percentages are available in a table on the right

Site Information
Name: Fish River - Station 373 Sampled by: Biomonitoring Unit
Town: Wallagrass Method: Rock Scrapings 1 Inch Circles
Biomonitoring Basin St. John And Allagash Sample ID: SA-373-2004R (292)
Sample Date: 2004-07-21 Taxonomist: Michigan State University
Taxa List (See key at end of report)

 Tolerance values color coding: Blue for sensitive, <32.20. Purple for intermediate, >=32.20 and <60. Red for tolerant, >=60.

Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Homoeothrix janthina Filamentous Cyanobacteria 0.144 0.016 43 19 21
Achnanthidium minutissimum Pennate Diatom 0.129 0.029 1 2 2 7 N P 41.2
Calothrix sp. 225m Filamentous Cyanobacteria 0.102 0.006 29.1 9 15
Undetermined bg filament 1-25m Cyanobacteria 0.076 0.001 NA
Geitleribactron Filamentous Cyanobacteria 0.069 0.003 39.4
Stigeoclonium Filamentous Green 0.051 0.119 42.6
Achnanthidium deflexum Pennate Diatom 0.042 0.020 1 2 3 N P 43.5 40 52
Encyonopsis falaisensis Pennate Diatom 0.035 0.011 1 1 1 2 V S NA
Chamaesiphon Cyanobacteria 0.031 0.005 NA
Gomphonema angustum Pennate Diatom 0.027 0.057 1 1 2 1 N S 37.1
Encyonema silesiacum Pennate Diatom 0.020 0.027 3 3 2 7 V S 46.9 43 69
Aphanothece clathrata Cyanobacteria 0.020 0.000 43.1
Fragilaria tenera Pennate Diatom 0.018 0.017 1 1 1 2 N V 31.9 27 41
Tabellaria flocculosa Pennate Diatom 0.016 0.100 1 2 1 3 N U 18.8 17 32
Leptolyngbya Filamentous Cyanobacteria 0.014 0.000 38.3 28 75
Scenedesmus spinosus Colonial Green 0.014 0.002 45.7
Oedogonium 10-125m Filamentous Green 0.014 0.201 37.6 27 47
Eunotia minor Pennate Diatom 0.014 0.056 1 1 V E 42.4 19 34
Synedra rumpens Pennate Diatom 0.012 0.004 2 2 N E 34.3 20 32
Encyonopsis microcephala Pennate Diatom 0.011 0.004 1 1 2 4 V S 34.8 17 24
Phormidium minnesotense Filamentous Cyanobacteria 0.010 0.000 42.6
Undetermined bluegreen filament Cyanobacteria 0.010 0.003 NA
Fragilaria sepes Pennate Diatom 0.008 0.005 1 1 1 2 N V 32.1 18 39
Diatoma moniliformis Pennate Diatom 0.008 0.006 3 N U 52.8 27 36
Ulnaria ulna Pennate Diatom 0.007 0.137 3 4 2 N E 34.2 17 21
Undetermined green coccoid 5-75m Colonial Green 0.007 0.002 NA
Brachysira microcephala Pennate Diatom 0.006 0.004 2 1 2 2 M P 18 12 18
Delicata delicatula Pennate Diatom 0.006 0.009 1 1 1 1 V S 31.3 21 22
Diatoma tenuis Pennate Diatom 0.005 0.004 3 3 3 5 N U 46.8 52 86
Phormidium Filamentous Cyanobacteria 0.005 0.001 42.6 60
Navicula cryptotenella Pennate Diatom 0.004 0.004 2 2 7 M P 44.6 61 82
Navicula submuralis Pennate Diatom 0.004 0.001 M P NA
Psammothidium levanderi Pennate Diatom 0.004 0.000 1 1 1 1 V P NA
Staurosira construens var. venter Pennate Diatom 0.004 0.002 1 2 2 4 N V 41.3 35 67
Gomphonema affine Pennate Diatom 0.003 0.024 1 2 2 3 N S 34.3
Gomphonema parvulum Pennate Diatom 0.003 0.002 4 4 2 5 N S 42.2 21
Eucocconeis laevis Pennate Diatom 0.003 0.001 1 1 1 1 V P 29.5 17 18
Gomphonema minutum Pennate Diatom 0.003 0.003 2 2 5 N S 54.6 61 55
Reimeria sinuata Pennate Diatom 0.003 0.002 1 2 2 3 M P 60.9 65 88
Undetermined coccoid cyanophyte Cyanobacteria 0.003 0.001 NA
Planothidium frequentissimum Pennate Diatom 0.003 0.001 3 4 2 V P 65.1 69 92
Aulacoseira ambigua Centric Diatom 0.003 0.003 3 2 2 5 N U 34.5 25 56
Unidentified bluegreen akinete Cyanobacteria 0.003 0.002 NA
Cosmarium angulosum Desmid 0.002 0.004 26 18 15
Karayevia laterostrata Pennate Diatom 0.002 0.000 1 1 1 1 V P 59 58 84
Fragilaria gracilis Pennate Diatom 0.002 0.002 1 1 2 2 N V 30.6 18 22
Ankistrodesmus falcatus Colonial Green 0.002 0.000 45.7 58 75
Fragilaria vaucheriae Pennate Diatom 0.001 0.001 3 3 2 5 N V 44.2 36
Sellaphora vitabunda Pennate Diatom 0.001 0.000 2 2 M P NA
Cavinula pseudoscutiformis Pennate Diatom 0.001 0.000 2 2 2 4 M P NA
Cocconeis lineata Pennate Diatom 0.001 0.001 3 2 2 5 N P 51.5 62 82
Craticula submolesta Pennate Diatom 0.001 0.000 M P 26.6
Cyclotella bodanica var. lemanica Centric Diatom 0.001 0.002 1 1 1 1 N U 14.3 21 20
Discostella pseudostelligera Centric Diatom 0.001 0.000 3 3 2 5 N U 28.6 38 86
Cymbella cistula Pennate Diatom 0.001 0.024 2 2 2 5 V S 23.7
Cymbella proxima Pennate Diatom 0.001 0.029 1 3 V S NA
Epithemia goeppertiana Pennate Diatom 0.001 0.018 1 1 M P NA
Fragilaria capucina Pennate Diatom 0.001 0.001 2 2 3 N V 32.9 59 51
Gomphonema pumilum Pennate Diatom 0.001 0.001 2 7 N S 43.6 14 21
Navicula concentrica Pennate Diatom 0.001 0.008 1 1 M P NA
Navicula lanceolata Pennate Diatom 0.001 0.005 3 3 3 5 M P 77.5 75 98
Eolimna minima Pennate Diatom 0.001 0.000 4 4 2 5 M P 57 64 88
Psammothidium grischunum fo. daonensis Pennate Diatom 0.001 0.000 1 1 1 1 V P 30.2 31 39
Psammothidium subatomoides Pennate Diatom 0.001 0.000 1 1 1 2 V P 42.4 20 35
Pseudostaurosira brevistriata Pennate Diatom 0.001 0.001 1 1 2 7 N E 32.2 46 45
Ulnaria acus Pennate Diatom 0.001 0.001 2 3 2 5 N E 31.7 29 48
Nitzschia valdestriata Pennate Diatom 0.001 0.000 1 H P NA
Nitzschia linearis Pennate Diatom 0.001 0.002 2 2 2 4 H P 54.2 68 87
Amphora pediculus Pennate Diatom 0.001 0.001 2 2 2 5 M P 76.2 71 93
Diploneis ovalis Pennate Diatom 0.001 0.001 1 1 2 M P NA
Navicula gregaria Pennate Diatom 0.001 0.001 4 3 3 5 M P 79.6 66 89
Planothidium rostratum Pennate Diatom 0.001 0.000 3 3 2 5 V P 56.6 48 96

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.