MBSS Site Summary for: PTOB-207-X-2005
Located on Port Tobacco Creek in the Port Tobacco River watershed,
8-digit code: 02140109.
This stream was visited in the spring on 7/5/2005 and again in the summer on 7/5/2005.
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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N R |
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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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11,276 acres
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An example of a forested stream.
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Urban Land Use
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16 %
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Agricultural Land Use
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24 %
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Forested Land Use
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57 %
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Stream Water Quality:
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| Water temperature |
23.8 ° C
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| Dissolved oxygen (DO) |
6.6 mg/L
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| Conductivity |
241 µmho/cm
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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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| Fish data is unavailable or no fish observed. |
| American Bullfrog |
| Northern Green Frog |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Hydrobaenus |
Midge
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37 |
| Stenelmis |
Beetle
|
10 |
| Isoperla |
Stripetail Stonefly
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10 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
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7 |
| Chloroperlidae |
Green Stonefly
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6 |
| Ephemerella |
Sulphur Mayfly
|
5 |
| Orthocladius |
Non-Biting Midges
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4 |
| Orthocladiinae |
Midge
|
3 |
| Ceratopogonidae |
Biting Midge
|
3 |
| Tubificidae |
Aquatic Worm
|
3 |
| Synurella |
Amphipod
|
2 |
| Hexatoma |
Crane Fly
|
2 |
| Ablabesmyia |
Non-Biting Midge
|
2 |
| Tanytarsini |
Non-Biting Midges
|
2 |
| Tribelos |
Non-Biting Midges
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2 |
| Agabus |
Predatory Aquatic Beetle
|
1 |
| Elmidae |
Riffle Beetle
|
1 |
| Optioservus |
Riffle Beetle
|
1 |
| Oulimnius |
Riffle Beetle
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1 |
| Dromogomphus |
Spinylegs Dragonfly
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1 |
| Tipula |
Crane Fly
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1 |
| Musculium |
Fingernail Clam
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1 |
| Stenonema |
Flatheaded Mayfly
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1 |
| Spirosperma |
Aquatic Oligochaete Worm
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1 |
| Paralauterborniella |
|
1 |
| Coenagrionidae |
Narrowwinged Damselfly
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1 |
| Lype |
Net Tube Caddisfly
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1 |
| Stempellinella |
Non-Biting Midges
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1 |
| Dolichopodidae |
Long-Legged Fly
|
1 |
| Eurylophella |
Mayfly
|
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.
