MBSS Site Summary for: LPAX-304-R-2017
Located on DORSEY RUN in the Little Patuxent River watershed,
8-digit code: 02131105.
This stream was visited in the spring on 4/5/2017 and again in the summer on 8/21/2017.
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
|
Good - 4.0 / 5.0
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Benthic IBI
|
Good - 4.4 / 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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7,729 acres
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An example of a highly channelized urban stream.
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Urban Land Use
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69.3 %
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Agricultural Land Use
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2.4 %
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Forested Land Use
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25 %
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Stream Water Quality:
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| pH (lab) |
7.38 |
Alkalinity
(acid neutralizing capacity)
|
1346.8 µeq/L |
| Dissolved organic carbon (DOC) |
2.4442 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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| Garlic Mustard |
| Japanese Barberry |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Lesser Celandine (Fig Buttercup) |
| Mile-A-Minute |
| Multiflora Rose |
| Oriental Bittersweet |
| Phragmites |
| Wineberry |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| ORTHOCLADIUS |
Non-Biting Midges
|
20 |
| TANYTARSUS |
Non-Biting Midges
|
10 |
| ORTHOCLADIINAE |
Midge
|
10 |
| PARAKIEFFERIELLA |
European Non-Biting Midge
|
8 |
| SPHAERIUM |
Fingernail Clam
|
6 |
| HETEROCLOEON |
|
5 |
| POLYPEDILUM |
Non-Biting Midges
|
5 |
| LUMBRICULIDAE |
Worm
|
5 |
| CHIRONOMUS |
Non-Biting Midges
|
4 |
| ANCYRONYX |
Spider Riffle Beetle
|
4 |
| STENOCHIRONOMUS |
European Non-Biting Midge
|
4 |
| TUBIFICIDAE |
Aquatic Worm
|
4 |
| MACRONYCHUS |
Riffle Beetle
|
3 |
| ABLABESMYIA |
Non-Biting Midge
|
3 |
| HEMERODROMIA |
Tiny Fly
|
3 |
| TANYTARSINI |
Non-Biting Midges
|
2 |
| ANAFROPTILUM |
Small Minnow Mayfly
|
2 |
| POTTHASTIA |
Non-Biting Midges
|
2 |
| STENELMIS |
Beetle
|
2 |
| CRANGONYX |
Amphipod
|
2 |
| CAECIDOTEA |
Isopod
|
2 |
| CHEUMATOPSYCHE |
Net-Spinning Caddisfly
|
2 |
| HYDROPSYCHE |
Net-Spinning Caddisfly
|
1 |
| ARGIA |
Narrow-Winged Damselfly
|
1 |
| HYDROPTILA |
Microcaddisfly
|
1 |
| PISIDIUM |
Freshwater Pea (Pill) Clam
|
1 |
| HYALELLA |
Amphipod
|
1 |
| NAIDIDAE |
Aquatic Worm
|
1 |
| MENETUS |
Air Breathing Freshwater Snail
|
1 |
| PHYSA |
Air-Breathing Freshwater Snail
|
1 |
| SIMULIUM |
Black Fly
|
1 |
| RHEOTANYTARSUS |
Non-Biting Midges
|
1 |
| CRICOTOPUS |
Non-Biting Midges
|
1 |
| DICROTENDIPES |
Non-Biting Midges
|
1 |
| MICROPSECTRA |
Non-Biting Midges
|
1 |
| NANOCLADIUS |
Non-Biting Midges
|
1 |
| ACERPENNA |
Tiny Blue-Winged Olive Mayflies
|
1 |
| CHAETOCLADIUS |
Non-Biting Midges
|
1 |
| THIENEMANNIMYIA GROUP |
Non-Biting Midges
|
1 |
| DUBIRAPHIA |
Riffle Beetle
|
1 |
| POLYCENTROPUS |
Tube Maker Caddisfly
|
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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