MBSS Site Summary for: PAXM-201-A-2008
Located on MATAPONI CREEK in the Patuxent River middle watershed,
8-digit code: 02131102.
This stream was visited in the spring on 4/23/2008 and again in the summer on 8/8/2008.
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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Good - 4.0 / 5.0
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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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9,238 acres
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An example of a forested stream.
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Urban Land Use
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6.3 %
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Agricultural Land Use
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36.3 %
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Forested Land Use
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53.4 %
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Stream Water Quality:
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| Water temperature |
21.1 ° C
|
| Dissolved oxygen (DO) |
7.5 mg/L
|
| pH (lab) |
7.14 |
| Conductivity |
276 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
334.9 µeq/L |
| Dissolved organic carbon (DOC) |
6.5817 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 |
| Fowler's Toad |
| Gray Treefrog |
| Green Treefrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Pickerel Frog |
| Southern Leopard Frog |
| Spotted Salamander |
| Japanese Barberry |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Oriental Bittersweet |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Isoperla |
Stripetail Stonefly
|
34 |
| Plauditus |
Tiny Blue-Winged Olive Mayflies
|
9 |
| Baetidae |
Small Minnow Mayfly
|
6 |
| Ormosia |
Cranefly
|
5 |
| Amphinemura |
Spring Stonefly
|
4 |
| Probezzia |
Biting Midges
|
3 |
| Perlidae |
Common Stonefly
|
3 |
| Hexatoma |
Crane Fly
|
2 |
| Simulium |
Black Fly
|
2 |
| Neoporus |
|
2 |
| Tubificidae |
Aquatic Worm
|
2 |
| Chironomus |
Non-Biting Midges
|
2 |
| Orthocladius |
Non-Biting Midges
|
2 |
| Tanytarsus |
Non-Biting Midges
|
2 |
| Acentrella |
Tiny Blue-Winged Olive Mayflies
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2 |
| Ephemerellidae |
Spiny Crawler Mayfly
|
1 |
| Hemerodromia |
Tiny Fly
|
1 |
| Taeniopteryx |
Winter Stonefly
|
1 |
| Ironoquia |
Northern Caddisfly
|
1 |
| Parametriocnemus |
Non-Biting Midges
|
1 |
| Tipulidae |
Cranefly
|
1 |
| Caecidotea |
Isopod
|
1 |
| Nigronia |
Megaloptera (Dark Fishfly)
|
1 |
| Hydrobaenus |
Midge
|
1 |
| Chaetocladius |
Non-Biting Midges
|
1 |
| Bezzia |
Biting Midge
|
1 |
| Ceratopogonidae |
Biting Midge
|
1 |
| Physa |
Air-Breathing Freshwater Snail
|
1 |
| Tipula |
Crane Fly
|
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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