MBSS Site Summary for: PTOB-002-S-2004

Site Photos

Field photo showing stream conditions at site PTOB-002-S-2004-1 (Opens in a new window) Field photo showing stream conditions at site PTOB-002-S-2004-2 (Opens in a new window)

Located on HOGHOLE RUN in the Port Tobacco River watershed, 8-digit code: 02140109.
This stream was visited in the spring on 4/14/2004 and again in the summer on 7/19/2004.

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 Fair - 3.7 / 5.0
Benthic IBI Good - 4.7 / 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 2,253 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 2.9 %
Agricultural Land Use 25.8 %
Forested Land Use 70.1 %


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 15/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 55 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 25 meters 		14/20 (Suboptimal)
Shading 85 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 20.2 ° C
Dissolved oxygen (DO) 7.3 mg/L
pH (lab) 6.06
Conductivity 47 µmho/cm
Alkalinity
(acid neutralizing capacity) 		41.1 µeq/L
Dissolved organic carbon (DOC) 5.7 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 260
Blacknose Dace 175
Creek Chub 78
Rosyside Dace 39
Creek Chubsucker 3
Least Brook Lamprey 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Box Turtle
Fowler's Toad
Northern Green Frog
Northern Spring Peeper
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Parametriocnemus Non-Biting Midges 16
Tanytarsus Non-Biting Midges 16
Thienemannimyia group Non-Biting Midges 14
Chloroperlidae Green Stonefly 13
Leuctra  Rolled-Winged Stonefly 12
Rheocricotopus Non-Biting Midges 10
Eccoptura Yellow Stone Stonefly 6
Rheosmittia Non-Biting Midges 4
Simulium Black Fly 4
Polypedilum Non-Biting Midges 3
Hexatoma Crane Fly 3
Orthocladius Non-Biting Midges 3
Ablabesmyia Non-Biting Midge 2
Neophylax Caddisfly 2
Synurella Amphipod 2
Trissopelopia Non-Biting Midges 2
Ironoquia Northern Caddisfly 1
Ephemerella Sulphur Mayfly 1
Lumbriculidae Worm 1
Ceratopogonidae Biting Midge 1
Gordiidae Horsehair Worm 1
Caecidotea Isopod 1
Eurylophella Mayfly 1
Chrysops Deerfly 1
Pycnopsyche Great Autumn 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.