MBSS Site Summary for: PTOB-002-S-2015


Located on HOGHOLE RUN in the Port Tobacco River watershed, 8-digit code: 02140109.
This stream was visited in the spring on 3/11/2015 and again in the summer on 6/17/2015.

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 - 4.3 / 5.0
Benthic IBI Good - 4.4 / 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 6.3 %
Agricultural Land Use 13.7 %
Forested Land Use 75.5 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 13/20 (Suboptimal)
Pool Quality
Pool Extent = 44 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 31 meters 		10/20 (Marginal)
Shading 70 %
Embeddedness 40 %


Stream Water Quality:
pH (lab) 6.29
Alkalinity
(acid neutralizing capacity) 		51.4 µeq/L
Dissolved organic carbon (DOC) 4.3019 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 136
Rosyside Dace 57
Eastern Mudminnow 31
Least Brook Lamprey 22
Creek Chubsucker 19
Creek Chub 15
Green Sunfish 13
Tessellated Darter 11
Pumpkinseed 10
American Eel 8
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Cope's Gray Treefrog
Northern Green Frog
Northern Spring Peeper
Pickerel Frog
Wood Frog

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 40
Amphinemura Spring Stonefly 18
Prostoia Spring Stonefly 14
Neophylax Caddisfly 11
Strophopteryx Early Brown Stonefly 10
Capniidae Small Winter Stonefly 8
Ameletus Combmouthed Minnow Mayfly 3
Nemouridae Nemourid Stonefly 3
Ephemerellidae Spiny Crawler Mayfly 2
Bezzia Biting Midge 2
Eurylophella Mayfly 2
Isoperla Stripetail Stonefly 1
Ephemerella Sulphur Mayfly 1
Psephenus Water Penny 1
Parachaetocladius Non-Biting Midge 1
Corynoneura Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Thienemannimyia Group Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Perlodidae Perlodid Stonefly 1
Optioservus Riffle Beetle 1
Leuctridae Rolledwinged Stonefly 1
Chrysops Deerfly 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Leuctra  Rolled-Winged Stonefly 1
Synurella Amphipod 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.