MBSS Site Summary for: PTOB-215-X-2005
Located on Pages Swamp in the Port Tobacco River watershed,
8-digit code: 02140109.
This stream was visited in the spring on 7/20/2005 and again in the summer on 7/20/2005.
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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Fair - 3.6 / 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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4,682 acres
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An example of a highly channelized urban stream.
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Urban Land Use
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24 %
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Agricultural Land Use
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19 %
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Forested Land Use
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55 %
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Stream Water Quality:
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| Water temperature |
25.6 ° C
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| Dissolved oxygen (DO) |
6.7 mg/L
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| Conductivity |
150 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. |
| No amphibians and reptiles noted. |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Orthocladius |
Non-Biting Midges
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20 |
| Musculium |
Fingernail Clam
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17 |
| Simulium |
Black Fly
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13 |
| Optioservus |
Riffle Beetle
|
11 |
| Stenelmis |
Beetle
|
6 |
| Rheocricotopus |
Non-Biting Midges
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5 |
| Oulimnius |
Riffle Beetle
|
4 |
| Psilotreta |
Mortarjoint Casemaker Caddisfly
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3 |
| Eukiefferiella |
Non-Biting Midges
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3 |
| Polypedilum |
Non-Biting Midges
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3 |
| Rheosmittia |
Non-Biting Midges
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2 |
| Tanytarsus |
Non-Biting Midges
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1 |
| Dubiraphia |
Riffle Beetle
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1 |
| Cordulegaster |
Spiketail Dragonfly
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1 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
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1 |
| Stenonema |
Flatheaded Mayfly
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1 |
| Menetus |
Air Breathing Freshwater Snail
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1 |
| Perlidae |
Common Stonefly
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1 |
| Paratendipes |
European Non-Biting Midge
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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.
