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 = A

Final Determination = A

Attains Class = YES

Reason = Model

Model Result = A

Prob. Class A = 0.97

Prob. Class B = 0.03

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 = 4 m

Wetted width = 3 m

Depth = 28 cm

Water velocity = 4 cm/s

Riffle = 50 %

Run = 80 %

Canopy Cover = 89 %

Bedrock = 5 %

Boulder = 40 %

Cobble = 40 %

Gravel = 15 %

Viewing Bucket and Land Use

Statutory Class: A

Nutrient Response Indicator Criterion: <19% Nuisance Algae Cover

Nuisance Algae in Survey: 0 % cover

Meets Nutrient Response Indicator Criterion: Yes

Site Information

Name:	Richardson Brook - Station 1117	Sampled by:	Biomonitoring Unit
Town:	T19 Ed Bpp	Method:	Rock Scrapings 1 Inch Circles
Sample Date:	2022-07-14	Sample ID:	SA-1117-2022R (2070)

Taxa List (See key at end of report)

Name	Group	RA	RB	Oxy	Sap	Sal	Tr	Mot	GF	Tol	TN	TP
Eunotia	Pennate Diatom	0.379	0.598					V	E	NA	NA	NA
Leptolyngbya	Filamentous Cyanobacteria	0.300	0.004							38.3	28	75
Eunotia rhomboidea	Pennate Diatom	0.082	0.074	1	1	1	1	V	E	15.8	9	1
Eunotia minor	Pennate Diatom	0.055	0.086		1	1		V	E	42.4	19	34
Unknown Rhodophyte Florideophycidae (Chantransia)	Red Algae	0.038	0.063							47.5	48	68
Rossithidium anastasiae	Pennate Diatom	0.025	0.015					V	P	NA	NA	NA
Achnanthidium minutissimum	Pennate Diatom	0.018	0.002	1	2	2	7	N	P	41.2	NA	NA
Scenedesmus	Colonial Green	0.018	0.002							NA	NA	NA
Navicula notha	Pennate Diatom	0.011	0.010					M	P	37.4	20	34
Gomphonema	Pennate Diatom	0.008	0.006					N	S	15.1	NA	NA
Eunotia incisa	Pennate Diatom	0.007	0.013	1	1	1	1	V	E	24.8	18	35
Eunotia rushforthii	Pennate Diatom	0.005	0.002					V	E	NA	NA	NA
Eunotia seminulum	Pennate Diatom	0.005	0.002					V	E	NA	NA	NA
Euastrum	Desmid	0.004	0.018							NA	NA	NA
Chamaepinnularia mediocris	Pennate Diatom	0.004	0.001	1	1	1	1	M	P	41.9	NA	NA
Chroococcus	Cyanobacteria	0.004	0.000							NA	NA	NA
Tabellaria flocculosa	Pennate Diatom	0.003	0.018	1	2	1	3	N	U	18.8	17	32
Eunotia tenella	Pennate Diatom	0.003	0.001	1	1	1	1	V	E	NA	NA	2
Psammothidium subatomoides	Pennate Diatom	0.003	0.001	1	1	1	2	V	P	42.4	20	35
Cosmarium undulatum var. minutum	Desmid	0.002	0.013							NA	18	15
Tabellaria fenestrata	Pennate Diatom	0.002	0.036	1	2	1	2	N	U	18.8	16	28
Nitzschia palea	Pennate Diatom	0.002	0.001	4	5	2	6	H	P	60.3	67	89
Gomphonema exilissimum	Pennate Diatom	0.002	0.001	1	1	1	1	N	S	NA	19	29
Gomphonema minutum	Pennate Diatom	0.002	0.001		2	2	5	N	S	54.6	61	55
Encyonema pergracile	Pennate Diatom	0.001	0.002					V	S	NA	NA	NA
Achnanthidium exiguum	Pennate Diatom	0.001	0.000	1	2	2	7	N	P	51.1	63	91
Adlafia bryophila	Pennate Diatom	0.001	0.000	1	1	1	3	M	P	38.2	20	59
Brachysira	Pennate Diatom	0.001	0.000					M	P	NA	NA	NA
Brachysira brebissonii	Pennate Diatom	0.001	0.002	2	1	1	1	M	P	16.3	8	4
Cocconeis placentula	Pennate Diatom	0.001	0.012	3	2	2	5	N	P	NA	30	82
Eunotia exigua	Pennate Diatom	0.001	0.000	2	3	2	7	V	E	21.7	13	13
Eunotia hexaglyphis	Pennate Diatom	0.001	0.006					V	E	NA	NA	NA
Eunotia microcephala	Pennate Diatom	0.001	0.000	1	1	1	1	V	E	NA	NA	NA
Gomphonema parvulum	Pennate Diatom	0.001	0.001	4	4	2	5	N	S	42.2	21	NA
Pinnularia microstauron	Pennate Diatom	0.001	0.007	3	2	2	7	M	P	NA	37	NA
Pseudostaurosira parasitica var. subconstricta	Pennate Diatom	0.001	0.001	1	2	2	4	N	E	NA	NA	NA
Sellaphora atomoides	Pennate Diatom	0.001	0.000					M	P	NA	NA	NA
Staurosira construens	Pennate Diatom	0.001	0.001	1	2	2	4	N	V	46.8	30	58

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.