MBSS Site Summary for: STMA-104-R-2009

Site Photos

Located on UT Eastern Branch in the St. Mary's River watershed, 8-digit code: 02140103.
This stream was visited in the spring on 3/11/2009 and again in the summer on 7/8/2009.

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 N R
Benthic IBI Fair - 3.6 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 62 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 26.7 %
Agricultural Land Use 27.1 %
Forested Land Use 38.6 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


Stream Water Quality:
pH (lab) 6.25
Alkalinity
(acid neutralizing capacity) 		169.6 µeq/L
Dissolved organic carbon (DOC) 6.602 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Eastern Box Turtle
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Caecidotea Isopod 8
Limnephilidae Northern Casemaker Caddisfly 5
Acerpenna Tiny Blue-Winged Olive Mayflies 2
Neoporus 2
Physa Air-Breathing Freshwater Snail 1
Prosimulium Black Fly 1
Hexatoma Crane Fly 1
Dubiraphia Riffle Beetle 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.