MBSS Site Summary for: LPAX-118-R-2000
Located on LITTLE PATUXENT R UT2 in the Little Patuxent River watershed,
8-digit code: 02131105.
This stream was visited in the spring on 4/3/2000 and again in the summer on 7/11/2000.
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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Poor - 1.0 / 5.0
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Benthic IBI
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Poor - 2.1 / 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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172 acres
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An example of a highly channelized urban stream.
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Urban Land Use
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56.9 %
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Agricultural Land Use
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9.3 %
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Forested Land Use
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33.9 %
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Stream Water Quality:
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| Water temperature |
23.5 ° C
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| Dissolved oxygen (DO) |
6.2 mg/L
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| pH (lab) |
8.06 |
| Conductivity |
240 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
880 µeq/L |
| Dissolved organic carbon (DOC) |
6.5 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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The following 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Common name |
Count |
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No Fish Observed
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0 |
Electrofishing to sample fish communities.
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| No amphibians and reptiles noted. |
| Canada Thistle |
| Crown Vetch |
| Japanese Honeysuckle |
| Mile-A-Minute |
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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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26 |
| Tubificidae |
Aquatic Worm
|
13 |
| Stenelmis |
Beetle
|
11 |
| Cricotopus/Orthocladius |
Midge
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10 |
| Diamesa |
Bloodworm
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9 |
| Orthocladiinae |
Midge
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7 |
| Conchapelopia |
Non-Biting Midges
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7 |
| Dytiscidae |
Predaceous Diving Beetle
|
3 |
| Physa |
Air-Breathing Freshwater Snail
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2 |
| Simuliidae |
Black Fly
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1 |
| Polypedilum |
Non-Biting Midges
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1 |
| Zavrelimyia |
Non-Biting Midges
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1 |
| Pisidiidae |
Pill Clam
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1 |
| Lumbriculidae |
Worm
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1 |
| Larsia |
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.
