MBSS Site Summary for: LANG-201-B-2007
Located on East Fork Langford Creek in the Langford Creek watershed,
8-digit code: 02130506.
This stream was visited in the spring on 3/29/2007 and again in the summer on 8/28/2007.
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
|
Poor - 2.7 / 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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2,965 acres
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Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
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Urban Land Use
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1.2 %
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Agricultural Land Use
|
86.9 %
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Forested Land Use
|
10.6 %
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Stream Water Quality:
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| Water temperature |
24.5 ° C
|
| Dissolved oxygen (DO) |
1.4 mg/L
|
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Dissolved oxygen levels measured in the stream were very low (1.4 mg/L).
Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
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| pH (lab) |
7.04 |
| Conductivity |
224 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
519.2 µeq/L |
| Dissolved organic carbon (DOC) |
4.3801 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 |
| Pickerel Frog |
| Southern Leopard Frog |
| Common Reed (Phragmites) |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Multiflora Rose |
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|
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Thienemannimyia group |
Non-Biting Midges
|
23 |
| Rheosmittia |
Non-Biting Midges
|
20 |
| Polypedilum |
Non-Biting Midges
|
9 |
| Cheumatopsyche |
Net-Spinning Caddisfly
|
7 |
| Nanocladius |
Non-Biting Midges
|
5 |
| Cricotopus |
Non-Biting Midges
|
4 |
| Tanypodinae |
Non-Biting Midges
|
4 |
| Caecidotea |
Isopod
|
3 |
| Conchapelopia |
Non-Biting Midges
|
3 |
| Ablabesmyia |
Non-Biting Midge
|
3 |
| Limnophyes |
Non-Biting Midge
|
2 |
| Physa |
Air-Breathing Freshwater Snail
|
2 |
| Orthocladius |
Non-Biting Midges
|
2 |
| Hydroporus |
Water Beetle
|
2 |
| Thienemanniella |
Non-Biting Midges
|
1 |
| Rheocricotopus |
Non-Biting Midges
|
1 |
| Cryptochironomus |
Non-Biting Midges
|
1 |
| Diplocladius |
Non-Biting Midges
|
1 |
| Gammarus |
Amphipod
|
1 |
| Hyalella |
Amphipod
|
1 |
| Lepidoptera |
Aquatic Moth
|
1 |
| Naididae |
Aquatic Worm
|
1 |
| Calopteryx |
Damselfly
|
1 |
| Musculium |
Fingernail Clam
|
1 |
| Phagocata |
|
1 |
| Stagnicola |
Air Breathing Freshwater Snail
|
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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