stream_algae_report_short_AP

Maine Department of Environmental Protection
Biological Monitoring Program
Stream Algae Report

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 = C

Final Determination = N

Attains Class = NO

Reason = Model

Model Result = N

Prob. Class A = 0.00

Prob. Class B = 0.00

Prob. Class C = 0.05

Prob. NA = 0.95

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 = 3 m

Depth = 11 cm

Water velocity = 13 cm/s

Riffle = 50 %

Run = 50 %

Pool = 0 %

Canopy Cover = 38 %

Bedrock = 0 %

Boulder = 40 %

Cobble = 40 %

Gravel = 10 %

Sand = 10 %

Silt = 0 %

Clay = 0 %

Viewing Bucket and Land Use

Statutory Class: C

Nutrient Response Indicator Criterion: <35% Nuisance Algae Cover

Nuisance Algae in Survey: 89.3 % cover

Meets Nutrient Response Indicator Criterion: No

Site Information

Name:	Nason’s Brook - Station 638	Sampled by:	Biomonitoring Unit
Town:	Portland	Method:	Rock Scrapings 1 Inch Circles
Sample Date:	2003-07-09	Sample ID:	SA-638-2003R (206)

Taxa List (See key at end of report)

Name	Group	RA	RB	Oxy	Sap	Sal	Tr	Mot	GF	Tol	TN	TP
Achnanthidium minutissimum	Pennate Diatom	0.386	0.012	1	2	2	7	N	P	41.2	NA	NA
Gomphonema kobayasii	Pennate Diatom	0.230	0.041					N	S	71.2	50	79
Phormidium formosum	Filamentous Cyanobacteria	0.087	0.002							42.6	23	NA
Amphora pediculus	Pennate Diatom	0.070	0.006	2	2	2	5	M	P	76.2	71	93
Undetermined bg filament 1-2 �m	Cyanobacteria	0.046	0.000							NA	NA	NA
Audouinella	Red Algae	0.033	0.021							47.5	54	69
Navicula gregaria	Pennate Diatom	0.019	0.003	4	3	3	5	M	P	79.6	66	89
Nitzschia amphibia	Pennate Diatom	0.018	0.004	3	3	2	5	H	P	79.8	53	93
Encyonema silesiacum	Pennate Diatom	0.018	0.003	3	3	2	7	V	S	46.9	43	69
Eolimna minima	Pennate Diatom	0.015	0.000	4	4	2	5	M	P	57	64	88
Navicula germainii	Pennate Diatom	0.008	0.002					M	P	NA	51	85
Cyclotella meneghiniana	Centric Diatom	0.008	0.002	5	4	3	5	N	U	72.6	55	73
Planothidium frequentissimum	Pennate Diatom	0.007	0.001	3	4	2		V	P	65.1	69	92
Gomphonema parvulum	Pennate Diatom	0.007	0.001	4	4	2	5	N	S	42.2	21	NA
Nitzschia agnita	Pennate Diatom	0.006	0.000			4		H	P	NA	NA	NA
Nitzschia palea	Pennate Diatom	0.006	0.000	4	5	2	6	H	P	60.3	67	89
Nitzschia gracilis	Pennate Diatom	0.006	0.000	2	2	1	3	H	P	46.9	22	64
Nitzschia supralitorea	Pennate Diatom	0.006	0.000	2	3	2	5	H	P	65.4	62	89
Nitzschia tubicola	Pennate Diatom	0.004	0.001					H	P	81.2	70	87
Ankistrodesmus	Colonial Green	0.003	0.000							47.5	NA	NA
Closterium parvulum	Desmid	0.003	0.015							31.7	14	28
Fragilaria vaucheriae	Pennate Diatom	0.003	0.000	3	3	2	5	N	V	44.2	36	NA
Ulnaria ulna	Pennate Diatom	0.003	0.008	3	4	2		N	E	34.2	17	21
Closterium ehrenbergii	Desmid	0.003	0.874							NA	NA	NA
Nitzschia inconspicua	Pennate Diatom	0.003	0.000	3	3	3	5	H	P	83.7	69	98
Mayamaea permitis	Pennate Diatom	0.003	0.000	4	4	2	5	M	P	65.3	100	100
Surirella brightwellii	Pennate Diatom	0.001	0.001					H	P	NA	NA	NA
Eunotia implicata	Pennate Diatom	0.001	0.001			1		V	E	28.3	16	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.