MBSS Site Summary for: PTOB-002-S-2008


Located on HOGHOLE RUN in the Port Tobacco River watershed, 8-digit code: 02140109.
This stream was visited in the spring on 3/10/2008 and again in the summer on 6/9/2008.

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 - 4.1 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,329 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.4 %
Agricultural Land Use 25.5 %
Forested Land Use 70 %


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

Physical Stream Habitat
Instream Habitat 18/20 (Optimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 57 meters 		16/20 (Optimal)
Riffle Quality
Riffle Extent = 26 meters 		16/20 (Optimal)
Shading 75 %
Embeddedness 25 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 22.5 ° C
Dissolved oxygen (DO) 8.2 mg/L
pH (lab) 6.24
Conductivity 53 µmho/cm
Alkalinity
(acid neutralizing capacity) 		50.3 µeq/L
Dissolved organic carbon (DOC) 4.3035 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 53
Rosyside Dace 33
Eastern Mudminnow 28
Creek Chub 7
Largemouth Bass 2
American Eel 1
Fallfish 1
Least Brook Lamprey 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
Cambarus bartonii bartonii
Orconectes limosus

Exotic Plants:
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 20
Amphinemura Spring Stonefly 20
Orthocladius Non-Biting Midges 12
Hydrobaenus Midge 6
Clioperla Green-Winged Stonefly 4
Ameletus Combmouthed Minnow Mayfly 4
Leuctra  Rolled-Winged Stonefly 4
Synurella Amphipod 4
Prostoia Spring Stonefly 4
Eukiefferiella Non-Biting Midges 3
Capniidae Small Winter Stonefly 3
Neophylax Caddisfly 3
Nemouridae Nemourid Stonefly 3
Diplocladius Non-Biting Midges 2
Tipula Crane Fly 2
Heterotrissocladius European Non-Biting Midge 2
Parakiefferiella European Non-Biting Midge 2
Naididae Aquatic Worm 2
Bezzia Biting Midge 2
Caecidotea Isopod 2
Lumbriculidae Worm 2
Psephenus Water Penny 1
Nanocladius Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Thienemannimyia Group Non-Biting Midges 1
Perlodidae Perlodid Stonefly 1
Macronychus Riffle Beetle 1
Synorthocladius 1
Simulium Black Fly 1
Stegopterna Black Fly 1
Strophopteryx Early Brown Stonefly 1
Tabanidae Horse Fly 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.