MBSS Site Summary for: MANO-102-R-2017

Site Photos

Field photo showing stream conditions at site MANO-102-R-2017-MidpointLookingDownstream (Opens in a new window) Field photo showing stream conditions at site MANO-102-R-2017-MidpointLookingUpstream (Opens in a new window)

Located on Loretto Branch in the Manokin River watershed, 8-digit code: 02130208.
This stream was visited in the spring on 4/10/2017 and again in the summer on 7/10/2017.

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 Good - 4.7 / 5.0
Benthic IBI Poor - 1.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,298 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1.1 %
Agricultural Land Use 18.8 %
Forested Land Use 54.8 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 4/20 (Poor)
Velocity/Depth Diversity 5/20 (Poor)
Pool Quality
Pool Extent = 68 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 7 meters 		6/20 (Marginal)
Shading 45 %
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:
pH (lab) 6.13
Alkalinity
(acid neutralizing capacity) 		195 µeq/L
Dissolved organic carbon (DOC) 6.63 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 38
Pirate Perch 21
Bluespotted Sunfish 17
Creek Chubsucker 17
Golden Shiner 13
American Eel 12
Mud Sunfish 4
Bluegill 3
Pumpkinseed 2
Redfin Pickerel 2
Brown Bullhead 1
Swamp Darter 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Southern Leopard Frog

Crayfish:
Procambarus sp.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
ORTHOCLADIUS Non-Biting Midges 52
SIMULIUM Black Fly 41
POLYPEDILUM Non-Biting Midges 10
SYNURELLA Amphipod 6
STEGOPTERNA Black Fly 2
ORTHOCLADIINAE Midge 2
CORYNONEURA Non-Biting Midges 1
MUSCULIUM Fingernail Clam 1
THIENEMANNIELLA Non-Biting Midges 1
THIENEMANNIMYIA GROUP Non-Biting Midges 1
ZAVRELIMYIA Non-Biting Midges 1
DUBIRAPHIA Riffle Beetle 1
PHAENOPSECTRA Non-Biting Midges 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.