MBSS Site Summary for: MANO-111-R-2003

Site Photos

Field photo showing stream conditions at site MANO-111-R-2003-0848 (Opens in a new window) Field photo showing stream conditions at site MANO-111-R-2003-0849 (Opens in a new window)

Located on MOORE BR in the Manokin River watershed, 8-digit code: 02130208.
This stream was visited in the spring on 3/12/2003 and again in the summer on 7/8/2003.

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.
Fish IBI Poor - 1.0 / 5.0
Benthic IBI Poor - 1.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 211 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 0 %
Agricultural Land Use 0 %
Forested Land Use 100 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 7/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 3/20 (Poor)
Pool Quality
Pool Extent = 75 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 97 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 23.5 ° C
Dissolved oxygen (DO) 1.1 mg/L
Dissolved oxygen levels measured in the stream were very low (1.1 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 4.07
Conductivity 64 µmho/cm
Alkalinity
(acid neutralizing capacity) 		-97.6 µeq/L
Dissolved organic carbon (DOC) 24.2 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. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Southern Leopard Frog
Wood Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Crangonyx Amphipod 29
Caecidotea Isopod 20
Corynoneura Non-Biting Midges 16
Orthocladius Non-Biting Midges 14
Tvetenia Non-Biting Midges 14
Pseudorthocladius Non-Biting Midges 10
Orthocladiinae Midge 4
Simuliidae Black Fly 3
Nemouridae Nemourid Stonefly 3
Agabus Predatory Aquatic Beetle 2
Lumbriculidae Worm 2
Deronectes 1
Tipula Crane Fly 1
Culicidae Mosquitoe 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

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.