MBSS Site Summary for: LYOU-101-C-2000

Site Photos

Field photo showing stream conditions at site LYOU-101-C-2000-01 (Opens in a new window) Field photo showing stream conditions at site LYOU-101-C-2000-02 (Opens in a new window)

Located on BLACK RUN in the Little Youghiogheny R watershed, 8-digit code: 05020202.
This stream was visited in the spring on 4/13/2000 and again in the summer on 7/25/2000.

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 Fair - 3.0 / 5.0
Benthic IBI Good - 4.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,295 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 3.4 %
Forested Land Use 96.3 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 70 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 10 meters 		9/20 (Marginal)
Shading 45 %
Embeddedness 60 %
The embeddedness, a measure of silt on the stream bottom, was 60%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 15.1 ° C
Dissolved oxygen (DO) 9.2 mg/L
pH (lab) 7.03
Conductivity 70 µmho/cm
Alkalinity
(acid neutralizing capacity) 		180.9 µeq/L
Dissolved organic carbon (DOC) 7 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 97
White Sucker 9
Creek Chub 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
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
Ephemerella Sulphur Mayfly 31
Amphinemura Spring Stonefly 22
Leuctridae Rolledwinged Stonefly 7
Acerpenna Tiny Blue-Winged Olive Mayflies 6
Paraleptophlebia Blue Quill Mayfly 6
Lepidostoma Little Brown Sedge Caddisfly 6
Prosimulium Black Fly 6
Baetidae Small Minnow Mayfly 3
Perlodidae Perlodid Stonefly 2
Stempellinella Non-Biting Midges 2
Tanytarsini Non-Biting Midges 2
Trissopelopia Non-Biting Midges 2
Tallaperla Roach-Like Stonefly 2
Parametriocnemus Non-Biting Midges 2
Pteronarcys Giant Stonefly 2
Pycnopsyche Great Autumn Brown Sedge Caddisfly 2
Chloroperlidae Green Stonefly 1
Clioperla Green-Winged Stonefly 1
Dicranota Hairy-Eyed Cranefly 1
Brachycentrus Humpless Casemaker Caddisfly 1
Gomphidae Clubtail Dragonfly 1
Pseudolimnophila Crane Fly 1
Tipula Crane Fly 1
Rheocricotopus Non-Biting Midges 1
Simulium Black Fly 1
Serratella Mayfly 1
Cricotopus/Orthocladius Midge 1
Corynoneura Non-Biting Midges 1
Collembola Springtail 1
Zavrelimyia Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Oulimnius 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.