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 = B

Final Determination = C

Attains Class = NO

Reason = BPJ

Model Result = C

Prob. Class A = 0.00

Prob. Class B = 0.00

Prob. Class C = 0.64

Prob. NA = 0.36

Comment = NA raised to Class C because natural conditions (high alkalinity) could affect species composition

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 = 33 m

Wetted width = 33 m

Depth = 42 cm

Water velocity = 63 cm/s

Riffle = 50 %

Run = 50 %

Pool = 0 %

Canopy Cover = 9 %

Bedrock = 0 %

Boulder = 20 %

Cobble = 30 %

Gravel = 40 %

Sand = 10 %

Silt = 0 %

Clay = 0 %

Viewing Bucket and Land Use

Statutory Class: B

Nutrient Response Indicator Criterion: <24% Nuisance Algae Cover

Nuisance Algae in Survey: 3.8 % cover

Meets Nutrient Response Indicator Criterion: Yes

Site Information

Name:	Prestile Stream - Station 3	Sampled by:	Biomonitoring Unit
Town:	Blaine	Method:	Rock Scrapings 1 Inch Circles
Sample Date:	2009-07-20	Sample ID:	SA-3-2009R (882)

Taxa List (See key at end of report)

Name	Group	RA	RB	Oxy	Sap	Sal	Tr	Mot	GF	Tol	TN	TP
Phormidium amoenum	Filamentous Cyanobacteria	0.545	0.279							42.6	NA	NA
Phormidium	Filamentous Cyanobacteria	0.106	0.052							42.6	60	NA
Homoeothrix janthina	Filamentous Cyanobacteria	0.096	0.002							43	19	21
Achnanthidium minutissimum	Pennate Diatom	0.052	0.009	1	2	2	7	N	P	41.2	NA	NA
Pediastrum boryanum	Colonial Green	0.051	0.319							NA	NA	NA
Achnanthidium pyrenaicum	Pennate Diatom	0.035	0.014					N	P	NA	62	80
Navicula cryptotenella	Pennate Diatom	0.022	0.028		2	2	7	M	P	44.6	61	82
Achnanthidium deflexum	Pennate Diatom	0.018	0.007		1	2	3	N	P	43.5	40	52
Navicula tripunctata	Pennate Diatom	0.016	0.084	2	2	2	5	M	P	69.4	76	88
Encyonopsis microcephala	Pennate Diatom	0.014	0.004	1	1	2	4	V	S	34.8	17	24
Navicula capitatoradiata	Pennate Diatom	0.011	0.036	3	3	2	5	M	P	68.5	62	78
Scenedesmus ecornis	Colonial Green	0.005	0.001							39.9	23	69
Cocconeis pediculus	Pennate Diatom	0.004	0.076	2	2	3	5	N	P	72.3	68	88
Achnanthidium atomus	Pennate Diatom	0.003	0.001					N	P	NA	NA	NA
Diatoma vulgaris	Pennate Diatom	0.003	0.045	2	2	2	4	N	U	88.7	60	89
Gomphonema minutum	Pennate Diatom	0.003	0.003		2	2	5	N	S	54.6	61	55
Scenedesmus quadricauda	Colonial Green	0.003	0.001							46.4	26	36
Amphora pediculus	Pennate Diatom	0.002	0.001	2	2	2	5	M	P	76.2	71	93
Encyonema silesiacum	Pennate Diatom	0.002	0.004	3	3	2	7	V	S	46.9	43	69
Gongrosira	Filamentous Green	0.002	0.016							37.3	37	NA
Cocconeis placentula var. lineata	Pennate Diatom	0.001	0.009	3	2	2	5	N	P	51.5	62	82
Cymbella affinis	Pennate Diatom	0.001	0.007	1	2	2	5	V	S	36.4	36	39
Encyonema reichardtii	Pennate Diatom	0.001	0.000	1	1	2	3	V	S	76.1	66	71
Gomphonema kobayasii	Pennate Diatom	0.001	0.001					N	S	71.2	50	79
Eolimna minima	Pennate Diatom	0.001	0.000	4	4	2	5	M	P	57	64	88
Nitzschia archibaldii	Pennate Diatom	0.001	0.000	2	2	2	5	H	P	60	NA	NA
Nitzschia dissipata	Pennate Diatom	0.001	0.001	2	2	2	4	H	P	60.9	48	75
Reimeria sinuata	Pennate Diatom	0.001	0.001	1	2	2	3	M	P	60.9	65	88
Navicula antonii	Pennate Diatom	0.000	0.000					M	P	65.4	54	89

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.