MBSS Site Summary for: PAXL-115-R-2004
Located on INDIAN CR UT PATUXENT R in the Patuxent River lower watershed,
8-digit code: 02131101.
This stream was visited in the spring on 3/2/2004 and again in the summer on 7/20/2004.
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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Fair - 3.3 / 5.0
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Benthic IBI
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Good - 4.1 / 5.0
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Land Use
Land use can provide important information for determining stream health.
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Catchment area
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289 acres
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An example of a forested stream.
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Urban Land Use
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4 %
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Agricultural Land Use
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31 %
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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 |
19.2 ° C
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| Dissolved oxygen (DO) |
8.3 mg/L
|
| pH (lab) |
7.07 |
| Conductivity |
119 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
257.8 µeq/L |
| Dissolved organic carbon (DOC) |
1.7 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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| American Bullfrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Gammarus |
Amphipod
|
16 |
| Trissopelopia |
Non-Biting Midges
|
16 |
| Zavrelimyia |
Non-Biting Midges
|
16 |
| Synurella |
Amphipod
|
10 |
| Pycnopsyche |
Great Autumn Brown Sedge Caddisfly
|
10 |
| Corynoneura |
Non-Biting Midges
|
6 |
| Natarsia |
Non-Biting Midges
|
6 |
| Limnephilidae |
Northern Casemaker Caddisfly
|
5 |
| Tubificidae |
Aquatic Worm
|
5 |
| Leuctra |
Rolled-Winged Stonefly
|
4 |
| Brillia |
Non-Biting Midges
|
4 |
| Dromogomphus |
Spinylegs Dragonfly
|
4 |
| Stilocladius |
Midge
|
3 |
| Leptophlebia |
Pronggilled Mayfly
|
3 |
| Micropsectra |
Non-Biting Midges
|
2 |
| Parametriocnemus |
Non-Biting Midges
|
2 |
| Polypedilum |
Non-Biting Midges
|
2 |
| Anchytarsus |
Beetle
|
2 |
| Pseudolimnophila |
Crane Fly
|
2 |
| Ephemerella |
Sulphur Mayfly
|
2 |
| Dineutus |
Whirlygig Beetle
|
2 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
|
1 |
| Hydrobius |
Water Scavenger Beetle
|
1 |
| Boyeria |
Spotted Darner Dragonfly
|
1 |
| Tipula |
Crane Fly
|
1 |
| Chrysops |
Deerfly
|
1 |
| Parakiefferiella |
European Non-Biting Midge
|
1 |
| Ptilostomis |
Giant Casemaker Caddisfly
|
1 |
| Ceratopogonidae |
Biting Midge
|
1 |
| Prosimulium |
Black Fly
|
1 |
| Stegopterna |
Black Fly
|
1 |
| Apsectrotanypus |
Non-Biting Midges
|
1 |
| Eurylophella |
Mayfly
|
1 |
| Orthocladiinae |
Midge
|
1 |
| Dixa |
|
1 |
| Helius |
|
1 |
| Thienemanniella |
Non-Biting Midges
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1 |
| Thienemannimyia group |
Non-Biting Midges
|
1 |
| Orthocladius |
Non-Biting Midges
|
1 |
| Leptophlebiidae |
Pronggilled Mayfly
|
1 |
| Allocapnia |
Small Winter Stonefly
|
1 |
| Capniidae |
Small Winter Stonefly
|
1 |
| Cordulegaster |
Spiketail Dragonfly
|
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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