MBSS Site Summary for: STMA-107-R-2003

Site Photos

Field photo showing stream conditions at site STMA-107-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site STMA-107-R-2003-3 (Opens in a new window) Field photo showing stream conditions at site STMA-107-R-2003-2 (Opens in a new window) Field photo showing stream conditions at site STMA-107-R-2003-4 (Opens in a new window)

Located on MARTIN COVE UT1 in the St. Mary's River watershed, 8-digit code: 02140103.
This stream was visited in the spring on 3/12/2003 and again in the summer on 6/9/2003.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Good - 4.0 / 5.0
Benthic IBI Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 136 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 8 %
Agricultural Land Use 38 %
Forested Land Use 53 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 25 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 50 meters 		12/20 (Suboptimal)
Shading 93 %
Embeddedness 45 %


Stream Water Quality:
Water temperature 16.9 ° C
Dissolved oxygen (DO) 7.7 mg/L
pH (lab) 6.9
Conductivity 85 µmho/cm
Alkalinity
(acid neutralizing capacity) 		417.7 µeq/L
Dissolved organic carbon (DOC) 3.6 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Least Brook Lamprey 68
Eastern Mudminnow 35
American Eel 11
Bluegill 7
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Copperhead
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Parametriocnemus Non-Biting Midges 16
Elmidae Riffle Beetle 12
Stegopterna Black Fly 11
Pseudolimnophila Crane Fly 11
Gomphidae Clubtail Dragonfly 10
Anchytarsus Beetle 8
Diplectrona Net-Spinning Caddisfly 6
Thienemannimyia group Non-Biting Midges 4
Synurella Amphipod 4
Musculium Fingernail Clam 3
Polypedilum Non-Biting Midges 3
Allocapnia Small Winter Stonefly 3
Stenochironomus European Non-Biting Midge 2
Tubificidae Aquatic Worm 2
Paraleptophlebia Blue Quill Mayfly 1
Stenelmis Beetle 1
Tabanus Biting Horsefly 1
Ceratopogon Biting Midge 1
Chloroperlidae Green Stonefly 1
Tipula Crane Fly 1
Tipulidae Cranefly 1
Chrysops Deerfly 1
Heleniella European Non-Biting Midge 1
Gyrinus Whirlygig Beetle 1
Leuctridae Rolledwinged Stonefly 1
Tanytarsini Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.