MBSS Site Summary for: PTOB-002-S-2007
Located on Hoghole Run in the Port Tobacco River watershed,
8-digit code: 02140109.
This stream was visited in the spring on 3/28/2007 and again in the summer on 6/13/2007.
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.
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Fish IBI
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Good - 4.3 / 5.0
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Benthic IBI
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Good - 4.7 / 5.0
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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.)
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Catchment area
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2,253 acres
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An example of a forested stream.
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Urban Land Use
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2.9 %
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Agricultural Land Use
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25.8 %
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Forested Land Use
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70.1 %
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Stream Water Quality:
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| Water temperature |
20.3 ° C
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| Dissolved oxygen (DO) |
7.8 mg/L
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| pH (lab) |
6.55 |
| Conductivity |
44 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
90.5 µeq/L |
| Dissolved organic carbon (DOC) |
3.9956 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.
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| Eastern American Toad |
| Eastern Box Turtle |
| Eastern Cricket Frog |
| Northern Dusky Salamander |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Northern Watersnake |
| Cambarus bartonii bartonii |
| Orconectes limosus |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Parametriocnemus |
Non-Biting Midges
|
18 |
| Amphinemura |
Spring Stonefly
|
15 |
| Polypedilum |
Non-Biting Midges
|
8 |
| Simulium |
Black Fly
|
7 |
| Synurella |
Amphipod
|
6 |
| Hydrobaenus |
Midge
|
6 |
| Orthocladius |
Non-Biting Midges
|
4 |
| Isoperla |
Stripetail Stonefly
|
4 |
| Thienemannimyia group |
Non-Biting Midges
|
3 |
| Stenelmis |
Beetle
|
3 |
| Caecidotea |
Isopod
|
2 |
| Eurylophella |
Mayfly
|
2 |
| Rheocricotopus |
Non-Biting Midges
|
2 |
| Tvetenia |
Non-Biting Midges
|
2 |
| Ephemerella |
Sulphur Mayfly
|
2 |
| Psephenus |
Water Penny
|
2 |
| Oulimnius |
Riffle Beetle
|
2 |
| Crangonyctidae |
Scud
|
2 |
| Centroptilum |
Small Minnow Mayfly
|
1 |
| Pisidiidae |
Pill Clam
|
1 |
| Optioservus |
Riffle Beetle
|
1 |
| Rheosmittia |
Non-Biting Midges
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1 |
| Tanytarsus |
Non-Biting Midges
|
1 |
| Leuctra |
Rolled-Winged Stonefly
|
1 |
| Orthocladiinae |
Midge
|
1 |
| Eukiefferiella |
Non-Biting Midges
|
1 |
| Nigronia |
Megaloptera (Dark Fishfly)
|
1 |
| Pseudolimnophila |
Crane Fly
|
1 |
| Ceratopogon |
Biting Midge
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Chelifera |
Aquatic Dance Fly
|
1 |
| Naididae |
Aquatic Worm
|
1 |
Sampling with a kick net.
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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.
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