MBSS Site Summary for: PTOB-002-S-2003

Site Photos

Field photo showing stream conditions at site PTOB-002-S-2003-701 (Opens in a new window) Field photo showing stream conditions at site PTOB-002-S-2003-702 (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 3/17/2003 and again in the summer on 6/24/2003.

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.
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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 13/20 (Suboptimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 40 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 36 meters 		15/20 (Suboptimal)
Shading 93 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 17.2 ° C
Dissolved oxygen (DO) 8.7 mg/L
pH (lab) 6.04
Conductivity 56 µmho/cm
Alkalinity
(acid neutralizing capacity) 		29.3 µeq/L
Dissolved organic carbon (DOC) 2.4 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 54
Blacknose Dace 17
American Eel 2
Creek Chub 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
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
Prosimulium Black Fly 33
Prostoia Spring Stonefly 16
Stegopterna Black Fly 8
Strophopteryx Early Brown Stonefly 6
Nemouridae Nemourid Stonefly 6
Allocapnia Small Winter Stonefly 6
Amphinemura Spring Stonefly 5
Oulimnius Riffle Beetle 4
Hydrobaenus Midge 3
Perlodidae Perlodid Stonefly 2
Eukiefferiella Non-Biting Midges 2
Orthocladius Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Stenochironomus European Non-Biting Midge 1
Rhyacophila Free-Living Caddisfly 1
Chloroperlidae Green Stonefly 1
Clioperla Green-Winged Stonefly 1
Pseudolimnophila Crane Fly 1
Tipula Crane Fly 1
Enchytraeidae Aquatic Worm 1
Stenelmis Beetle 1
Bezzia Biting Midge 1
Probezzia Biting Midges 1
Leuctridae Rolledwinged Stonefly 1
Collembola Springtail 1
Ostrocerca Stonefly 1
Isoperla Stripetail Stonefly 1
Lumbriculidae Worm 1
Capniidae Small Winter 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.