MBSS Site Summary for: SO-S-021-102-97


Located on LORETTO BR in the Manokin River watershed, 8-digit code: 02130208.
This stream was visited in the spring on 3/10/1997 and again in the summer on 6/16/1997.

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 Fair - 3.7 / 5.0
Benthic IBI Fair - 3.0 / 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 0 %
Agricultural Land Use 17.1 %
Forested Land Use 74.8 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = meters 		11/20 (Suboptimal)
Riffle Quality 6/20 (Marginal)
Shading 20 %
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 16.2 ° C
Dissolved oxygen (DO) 5.9 mg/L
pH (lab) 5.73
Conductivity 90 µmho/cm
Alkalinity
(acid neutralizing capacity) 		122.8 µeq/L
Dissolved organic carbon (DOC) 7.8 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 7 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Golden Shiner 22
Creek Chubsucker 14
Eastern Mudminnow 11
American Eel 5
Pirate Perch 5
Redfin Pickerel 4
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

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

Crayfish:
Procambarus acutus acutus

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Simulium Black Fly 35
Cricotopus Non-Biting Midges 17
Rheotanytarsus Non-Biting Midges 13
Conchapelopia Non-Biting Midges 10
Micropsectra Non-Biting Midges 4
Cricotopus/Orthocladius Midge 4
Dubiraphia Riffle Beetle 3
Caenis Mayfly 2
Stegopterna Black Fly 2
Calopteryx Damselfly 1
Caecidotea Isopod 1
Crangonyx Amphipod 1
Prosimulium Black Fly 1
Phaenopsectra Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Corynoneura Non-Biting Midges 1
Thienemanniella Non-Biting Midges 1
Crangonyctidae Scud 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.