MBSS Site Summary for: PAXM-105-X-2006
Located on Pindell Branch in the Patuxent River middle watershed,
8-digit code: 02131102.
This stream was visited in the spring on 3/20/2006 and again in the summer on 6/15/2006.
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 - 1.7 / 5.0
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Benthic IBI
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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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62 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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0 %
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Agricultural Land Use
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70 %
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Forested Land Use
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30 %
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Stream Water Quality:
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| Water temperature |
16.7 ° C
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| Dissolved oxygen (DO) |
7.4 mg/L
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| pH (lab) |
6.25 |
| Conductivity |
162 µmho/cm
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Alkalinity
(acid neutralizing capacity)
|
191.2 µeq/L |
| Dissolved organic carbon (DOC) |
1.3398 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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Blacknose Dace
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61 |
Electrofishing to sample fish communities.
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| American Bullfrog |
| Northern Green Frog |
| Northern Two-Lined Salamander |
| Wood Frog |
| Japanese Honeysuckle |
| Japanese Stiltgrass |
| Mile-A-Minute |
| Multiflora Rose |
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Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
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| Genus/Family |
Common Name |
Count |
| Chaetocladius |
Non-Biting Midges
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17 |
| Micropsectra |
Non-Biting Midges
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10 |
| Trissopelopia |
Non-Biting Midges
|
9 |
| Thienemannimyia group |
Non-Biting Midges
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6 |
| Paraphaenocladius |
Non-Biting Midges
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5 |
| Stempellinella |
Non-Biting Midges
|
5 |
| Pycnopsyche |
Great Autumn Brown Sedge Caddisfly
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4 |
| Calopteryx |
Damselfly
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4 |
| Limnodrilus |
Worm
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4 |
| Chrysops |
Deerfly
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3 |
| Tubificidae |
Aquatic Worm
|
3 |
| Musculium |
Fingernail Clam
|
3 |
| Hydrobaenus |
Midge
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3 |
| Polypedilum |
Non-Biting Midges
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3 |
| Orthocladius |
Non-Biting Midges
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3 |
| Zavrelimyia |
Non-Biting Midges
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2 |
| Ironoquia |
Northern Caddisfly
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2 |
| Cordulegaster |
Spiketail Dragonfly
|
2 |
| Amphinemura |
Spring Stonefly
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2 |
| Acerpenna |
Tiny Blue-Winged Olive Mayflies
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2 |
| Polycentropus |
Tube Maker Caddisfly
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2 |
| Lepidostoma |
Little Brown Sedge Caddisfly
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2 |
| Molannodes |
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2 |
| Stilobezzia |
|
1 |
| Heterotrissocladius |
European Non-Biting Midge
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1 |
| Stenelmis |
Beetle
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1 |
| Neophylax |
Caddisfly
|
1 |
| Pseudolimnophila |
Crane Fly
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1 |
| Stenonema |
Flatheaded Mayfly
|
1 |
| Paracladopelma |
Non-Biting Midge
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1 |
| Corynoneura |
Non-Biting Midges
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1 |
| Eukiefferiella |
Non-Biting Midges
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1 |
| Hydroporus |
Water Beetle
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1 |
| Hydrobius |
Water Scavenger Beetle
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1 |
| Limnephilidae |
Northern Casemaker Caddisfly
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1 |
| Leptophlebiidae |
Pronggilled Mayfly
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1 |
| Dixella |
|
1 |
| Microtendipes |
Non-Biting Midges
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1 |
| Phaenopsectra |
Non-Biting Midges
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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.
