MBSS Site Summary for: YOUG-432-S-2004


Located on BEAR CR in the Youghiogheny River watershed, 8-digit code: 05020201.
This stream was visited in the spring on 4/29/2004 and again in the summer on 8/16/2004.

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 Good - 4.7 / 5.0
Benthic IBI Good - 4.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 9,900 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.6 %
Agricultural Land Use 21.8 %
Forested Land Use 73.7 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 46 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 36 meters 		11/20 (Suboptimal)
Shading 88 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 14.1 ° C
Dissolved oxygen (DO) 8.9 mg/L
pH (lab) 7.24
Conductivity 69 µmho/cm
Alkalinity
(acid neutralizing capacity) 		146.1 µeq/L
Dissolved organic carbon (DOC) 1.4 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 60
White Sucker 28
Creek Chub 8
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 21
Epeorus Mayfly 16
Paraleptophlebia Blue Quill Mayfly 14
Baetis Blue-Winged Olive Mayfly 9
Cinygmula Dark Red Quill Mayfly 6
Drunella Blue-Winged Olive Mayfly 5
Chloroperlidae Green Stonefly 4
Diplectrona Net-Spinning Caddisfly 4
Acentrella Tiny Blue-Winged Olive Mayflies 3
Optioservus Riffle Beetle 3
Tallaperla Roach-Like Stonefly 2
Amphinemura Spring Stonefly 2
Blepharicera Net-Winged Midges 2
Perlodidae Perlodid Stonefly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Perlidae Common Stonefly 2
Antocha Crane Fly 1
Hexatoma Crane Fly 1
Heptagenia 1
Prosimulium Black Fly 1
Neophylax Caddisfly 1
Philopotamidae Fingernet Caddisfly 1
Stenonema Flatheaded Mayfly 1
Leucrocuta Mayfly 1
Peltoperlidae Roachlike Stonefly 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.