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 = C

Attains Class = YES

Reason = Model

Model Result = C

Prob. Class A = 0.00

Prob. Class B = 0.01

Prob. Class C = 0.94

Prob. NA = 0.05

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 = 5 m

Wetted width = 3 m

Depth = 11 cm

Water velocity = 15 cm/s

Riffle = 30 %

Run = 60 %

Pool = 10 %

Canopy Cover = 42 %

Bedrock = 0 %

Boulder = 60 %

Cobble = 20 %

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: 61 % 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:	2004-07-06	Sample ID:	SA-638-2004R (265)

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	0.195	0.061	1	2	2	7	N	P	41.2	NA	NA
Encyonema silesiacum	Pennate Diatom	0.133	0.242	3	3	2	7	V	S	46.9	43	69
Phormidium	Filamentous Cyanobacteria	0.130	0.030							42.6	60	NA
Aphanocapsa elachista	Cyanobacteria	0.090	0.002							34.4	NA	NA
Homoeothrix janthina	Filamentous Cyanobacteria	0.066	0.010							43	19	21
Amphora pediculus	Pennate Diatom	0.052	0.032	2	2	2	5	M	P	76.2	71	93
Pseudanabaena	Filamentous Cyanobacteria	0.049	0.002							NA	71	84
Gomphonema kobayasii	Pennate Diatom	0.033	0.044					N	S	71.2	50	79
Nitzschia amphibia	Pennate Diatom	0.030	0.055	3	3	2	5	H	P	79.8	53	93
Phormidium minnesotense	Filamentous Cyanobacteria	0.030	0.001							42.6	NA	NA
Gomphonema parvulum	Pennate Diatom	0.029	0.035	4	4	2	5	N	S	42.2	21	NA
Stigeoclonium	Filamentous Green	0.026	0.086							42.6	NA	NA
Navicula gregaria	Pennate Diatom	0.019	0.029	4	3	3	5	M	P	79.6	66	89
Cyclotella meneghiniana	Centric Diatom	0.014	0.024	5	4	3	5	N	U	72.6	55	73
Fragilaria vaucheriae	Pennate Diatom	0.012	0.012	3	3	2	5	N	V	44.2	36	NA
Gomphonema pumilum	Pennate Diatom	0.011	0.014			2	7	N	S	43.6	14	21
Gomphonema angustatum	Pennate Diatom	0.009	0.020	1	1	2	1	N	S	58	50	84
Chlamydomonas sp. 807um	Unicellular Green	0.008	0.024							54.5	NA	NA
Stigeoclonium lubricum	Filamentous Green	0.006	0.011							42.6	18	34
Nitzschia palea	Pennate Diatom	0.005	0.004	4	5	2	6	H	P	60.3	67	89
Eolimna minima	Pennate Diatom	0.004	0.001	4	4	2	5	M	P	57	64	88
Scenedesmus quadricauda	Colonial Green	0.004	0.003							46.4	26	36
Ulnaria ulna	Pennate Diatom	0.004	0.111	3	4	2		N	E	34.2	17	21
Synedra famelica	Pennate Diatom	0.004	0.002	1	1	2	3	N	V	NA	NA	NA
Chamaesiphon	Cyanobacteria	0.004	0.001							NA	NA	NA
Psammodictyon constrictum	Pennate Diatom	0.003	0.009	3	3	4	5	H	P	NA	NA	NA
Diatoma moniliformis	Pennate Diatom	0.003	0.003			3		N	U	52.8	27	36
Surirella minuta	Pennate Diatom	0.002	0.006	3	3	2	5	H	P	79.7	69	95
Navicula trivialis	Pennate Diatom	0.002	0.010	3	3	3	5	M	P	78.6	68	98
Nitzschia dissipata var. media	Pennate Diatom	0.002	0.004			2		H	P	64.7	NA	NA
Rhoicosphenia abbreviata	Pennate Diatom	0.002	0.004	2	2	2	5	V	S	83.4	72	96
Navicula veneta	Pennate Diatom	0.002	0.002	4	4	3	5	M	P	79.7	51	62
Navicula cryptocephala	Pennate Diatom	0.002	0.004	3	3	2	7	M	P	56.3	55	80
Melosira varians	Centric Diatom	0.002	0.013	3	3	2	5	N	U	67	67	89
Navicula cryptotenella	Pennate Diatom	0.002	0.002		2	2	7	M	P	44.6	61	82
Fragilaria sepes	Pennate Diatom	0.002	0.001	1	1	1	2	N	V	32.1	18	39
Eunotia exigua	Pennate Diatom	0.002	0.001	2	3	2	7	V	E	21.7	13	13
Eunotia bilunaris	Pennate Diatom	0.002	0.009	2	2	2	7	V	E	37.6	17	28
Trachelomonas	Euglenoid	0.002	0.008							NA	NA	NA
Surirella ovalis	Pennate Diatom	0.001	0.039	4	3	4	5	H	P	NA	NA	NA
Sellaphora seminulum	Pennate Diatom	0.001	0.000	4	4	2	5	M	P	51.5	67	73
Caloneis bacillum	Pennate Diatom	0.001	0.001	2	2	2	4	M	P	64.9	72	96
Gomphonema acuminatum	Pennate Diatom	0.001	0.008	2	2	2	5	N	S	26.7	13	15
Gomphonema truncatum	Pennate Diatom	0.001	0.010	2	2	2	4	N	S	36.5	47	44
Navicula lanceolata	Pennate Diatom	0.001	0.008	3	3	3	5	M	P	77.5	75	98
Cocconeis placentula var. lineata	Pennate Diatom	0.001	0.002	3	2	2	5	N	P	51.5	62	82

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.