MBSS Site Summary for: LYOU-101-R-2004


Located on BROAD FORD RUN in the Little Youghiogheny R watershed, 8-digit code: 05020202.
This stream was visited in the spring on 4/6/2004 and again in the summer on 8/2/2004.

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 - 2.5 / 5.0
Benthic IBI Poor - 2.5 / 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 340 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 17 %
Agricultural Land Use 47 %
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 10/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 35 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 50 meters 		8/20 (Marginal)
Shading 98 %
Embeddedness 45 %


Stream Water Quality:
Water temperature 16.3 ° C
Dissolved oxygen (DO) 7 mg/L
pH (lab) 6.9
Conductivity 182 µmho/cm
Alkalinity
(acid neutralizing capacity) 		269.1 µeq/L
Dissolved organic carbon (DOC) 1.3 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chub 45
Fathead Minnow 24
White Sucker 2
Blacknose Dace 1
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
Parametriocnemus Non-Biting Midges 17
Micropsectra Non-Biting Midges 12
Thienemannimyia group Non-Biting Midges 11
Apsectrotanypus Non-Biting Midges 7
Limnephilidae Northern Casemaker Caddisfly 6
Orthocladius Non-Biting Midges 5
Chrysops Deerfly 4
Brillia Non-Biting Midges 3
Diplectrona Net-Spinning Caddisfly 3
Hydropsyche Net-Spinning Caddisfly 3
Tipulidae Cranefly 3
Amphipoda Scud 2
Ostrocerca Stonefly 2
Heterotrissocladius European Non-Biting Midge 2
Prodiamesa 2
Leuctra  Rolled-Winged Stonefly 2
Prosimulium Black Fly 1
Paraleptophlebia Blue Quill Mayfly 1
Stenonema Flatheaded Mayfly 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Bittacomorpha 1
Litobrancha 1
Isoperla Stripetail Stonefly 1
Ephemerella Sulphur Mayfly 1
Boyeria Spotted Darner Dragonfly 1
Ironoquia Northern Caddisfly 1
Polypedilum Non-Biting Midges 1
Tanypodinae Non-Biting Midges 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.