MBSS Site Summary for: LYOU-219-R-2004


Located on TROUT RUN 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 8/18/2004.

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 Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 4,275 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 6 %
Agricultural Land Use 56 %
Forested Land Use 35 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 74 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 4 meters 		6/20 (Marginal)
Shading 70 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 16 ° C
Dissolved oxygen (DO) 8.1 mg/L
pH (lab) 7.25
Conductivity 183 µmho/cm
Alkalinity
(acid neutralizing capacity) 		262.2 µeq/L
Dissolved organic carbon (DOC) 1.6 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
White Sucker 280
Creek Chub 164
River Chub 89
Blacknose Dace 18
Golden Shiner 11
Green Sunfish 11
Rock Bass 9
Central Stoneroller 4
Largemouth Bass 4
Yellow Perch 3
Pumpkinseed 2
Redfin Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 16
Orthocladius Non-Biting Midges 14
Optioservus Riffle Beetle 12
Eukiefferiella Non-Biting Midges 8
Cheumatopsyche Net-Spinning Caddisfly 6
Microtendipes Non-Biting Midges 5
Rheosmittia Non-Biting Midges 5
Dubiraphia Riffle Beetle 5
Psychomyia Trumpet-Net Caddisfly 4
Hydropsyche Net-Spinning Caddisfly 4
Cardiocladius Non-Biting Midge 3
Caecidotea Isopod 3
Eurylophella Mayfly 3
Tvetenia Non-Biting Midges 3
Thienemannimyia group Non-Biting Midges 2
Baetidae Small Minnow Mayfly 2
Lumbriculidae Worm 2
Stenonema Flatheaded Mayfly 2
Tubificidae Aquatic Worm 2
Stictochironomus Non-Biting Midge 2
Cryptochironomus Non-Biting Midges 2
Chironomini Non-Biting Midge 1
Stenelmis Beetle 1
Prosimulium Black Fly 1
Antocha Crane Fly 1
Tipula Crane Fly 1
Paralauterborniella 1
Orthocladiinae Midge 1
Limnodrilus Worm 1
Perlodidae Perlodid Stonefly 1
Leptophlebia Pronggilled Mayfly 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.