Maine Department of Environmental Protection
 Biological Monitoring Program
 Stream Algae Report

Site Information
Name: West Branch Ellis River - Station 872 Sampled by: Biomonitoring Unit
Town: Andover Method: Rock Scrapings 1 Inch Circles
Sample Date: 2013-07-16 Sample ID: SA-872-2013R (1357)
Location: 215 M Downstream Of Route 120 Bridge

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 = A
Final Determination = A
Attains Class = YES
Reason = Model
Model Result = A
Prob. Class A = 0.96
Prob. Class B = 0.04
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

Bankfull width = 20 m
Wetted width = 10 m
Depth = 48 cm
Water velocity = 42 cm/s
Riffle = 5 %
Run = 95 %
Pool = 0 %

Viewing Bucket and Land Use

Site Information
Name: West Branch Ellis River - Station 872 Sampled by: Biomonitoring Unit
Town: Andover Method: Rock Scrapings 1 Inch Circles
Sample Date: 2013-07-16 Sample ID: SA-872-2013R (1357)
Taxa List (See key at end of report)
Name Group RA RB Oxy Sap Sal Tr Mot GF Tol TN TP
Phormidium Filamentous Cyanobacteria 0.232 0.015 42.6 60 NA
Unknown Rhodophyte Florideophycidae (Chantransia) Red Algae 0.163 0.060 47.5 48 68
Homoeothrix janthina Filamentous Cyanobacteria 0.147 0.001 43 19 21
Achnanthidium minutissimum Pennate Diatom 0.139 0.003 1 2 2 7 N P 41.2 NA NA
Gongrosira Filamentous Green 0.118 0.115 37.3 37 NA
Leptolyngbya Filamentous Cyanobacteria 0.067 0.000 38.3 28 75
Phormidium formosum Filamentous Cyanobacteria 0.055 0.001 42.6 23 NA
Fragilaria gracilis Pennate Diatom 0.016 0.000 1 1 2 2 N V 30.6 18 22
Ulnaria ulna Pennate Diatom 0.014 0.003 3 4 2 N E 34.2 17 21
Spirogyra Filamentous Green 0.011 0.718 42.6 28 41
Gomphonema parvulum Pennate Diatom 0.010 0.002 4 4 2 5 N S 42.2 21 NA
Fragilaria vaucheriae Pennate Diatom 0.009 0.001 3 3 2 5 N V 44.2 36 NA
Stauridium tetras Colonial Green 0.007 0.000 35.2 NA NA
Achnanthidium rivulare Pennate Diatom 0.003 0.000 N P 49.9 39 49
Psammothidium marginulatum Pennate Diatom 0.001 0.000 1 1 1 1 V P 24.6 NA NA
Psammothidium subatomoides Pennate Diatom 0.001 0.000 1 1 1 2 V P 42.4 20 35
Achnanthidium latecephalum Pennate Diatom 0.001 0.000 N P NA 7 NA
Closterium moniliferum Desmid 0.001 0.076 35.9 36 NA
Cocconeis placentula Pennate Diatom 0.001 0.000 3 2 2 5 N P NA 30 82
Encyonema neogracile Pennate Diatom 0.001 0.000 1 1 1 2 V S 24 7 NA
Encyonema silesiacum Pennate Diatom 0.001 0.000 3 3 2 7 V S 46.9 43 69
Eucocconeis laevis Pennate Diatom 0.001 0.000 1 1 1 1 V P 29.5 17 18
Eunotia subarcuatoides Pennate Diatom 0.001 0.000 1 1 1 1 V E 28.6 NA NA
Gomphonema gracile Pennate Diatom 0.001 0.000 1 1 2 3 N S 21.9 13 20
Reimeria sinuata Pennate Diatom 0.000 0.000 1 2 2 3 M P 60.9 65 88
Cocconeis fluviatilis Pennate Diatom 0.000 0.000 N P NA NA NA
Cocconeis pediculus Pennate Diatom 0.000 0.001 2 2 3 5 N P 72.3 68 88
Eunotia Pennate Diatom 0.000 0.000 V E NA NA NA
Eunotia minor Pennate Diatom 0.000 0.000 1 1 V E 42.4 19 34
Gomphonema minutum Pennate Diatom 0.000 0.000 2 2 5 N S 54.6 61 55
Navicula Pennate Diatom 0.000 0.000 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.