MBSS Site Summary for: LYOU-116-R-2004


Located on TROUT RUN UT in the Little Youghiogheny R watershed, 8-digit code: 05020202.
This stream was visited in the spring on 4/20/2004 and again in the summer on 7/14/2004.

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 Poor - 1.0 / 5.0
Benthic IBI Poor - 1.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 107 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 11 %
Agricultural Land Use 77 %
Forested Land Use 8 %


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

Physical Stream Habitat
Instream Habitat 5/20 (Poor)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 4/20 (Poor)
Pool Quality
Pool Extent = 42 meters 		5/20 (Poor)
Riffle Quality
Riffle Extent = 40 meters 		6/20 (Marginal)
Shading 90 %
Embeddedness 35 %
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
Water temperature 17.2 ° C
Dissolved oxygen (DO) 8.2 mg/L
pH (lab) 6.58
Conductivity 53 µmho/cm
Alkalinity
(acid neutralizing capacity) 		142.5 µeq/L
Dissolved organic carbon (DOC) 1 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Diamesa Bloodworm 35
Parametriocnemus Non-Biting Midges 14
Stegopterna Black Fly 8
Orthocladius Non-Biting Midges 7
Diplectrona Net-Spinning Caddisfly 6
Lumbriculidae Worm 5
Eukiefferiella Non-Biting Midges 3
Prosimulium Black Fly 3
Simulium Black Fly 3
Thienemannimyia group Non-Biting Midges 2
Limnephilidae Northern Casemaker Caddisfly 2
Agabus Predatory Aquatic Beetle 1
Micropsectra Non-Biting Midges 1
Pedicia 1
Pseudolimnophila Crane Fly 1
Heterotrissocladius European Non-Biting Midge 1
Lepidostoma Little Brown Sedge 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.