MBSS Site Summary for: MANO-119-R-2003

Site Photos

Field photo showing stream conditions at site MANO-119-R-2003-0860 (Opens in a new window) Field photo showing stream conditions at site MANO-119-R-2003-0861 (Opens in a new window)

Located on LORETTO BR in the Manokin River watershed, 8-digit code: 02130208.
This stream was visited in the spring on 3/13/2003 and again in the summer on 8/13/2003.

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 Fair - 3.0 / 5.0
Benthic IBI Fair - 3.6 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 615 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 35 %
Forested Land Use 62 %


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

Physical Stream Habitat
Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
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 23.5 ° C
Dissolved oxygen (DO) 2.7 mg/L
Dissolved oxygen levels measured in the stream were very low (2.7 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 5.65
Conductivity 109 µmho/cm
Alkalinity
(acid neutralizing capacity) 		60.6 µeq/L
Dissolved organic carbon (DOC) 10 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 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Golden Shiner 856
Creek Chubsucker 77
Pumpkinseed 56
Brown Bullhead 26
Pirate Perch 19
Redfin Pickerel 14
American Eel 7
Bluegill 6
Eastern Mudminnow 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Painted Turtle
Fowler's Toad
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Enallagma Narrow-Winged Damselfly 34
Orthocladius Non-Biting Midges 17
Dubiraphia Riffle Beetle 12
Tubificidae Aquatic Worm 11
Hydrobaenus Midge 5
Tribelos Non-Biting Midges 5
Tanypodinae Non-Biting Midges 3
Paratanytarsus Non-Biting Midges 3
Argia Narrow-Winged Damselfly 2
Menetus Air Breathing Freshwater Snail 2
Corynoneura Non-Biting Midges 2
Pisidiidae Pill Clam 1
Libellulidae Skimmer Dragonfly 1
Polycentropus Tube Maker Caddisfly 1
Sialis Alderfly 1
Crangonyx Amphipod 1
Synurella Amphipod 1
Naididae Aquatic Worm 1
Ceratopogonidae Biting Midge 1
Girardia Freshwater Flatworm 1
Caecidotea Isopod 1
Caenis Mayfly 1
Hydroptila Microcaddisfly 1
Paramerina Non-Biting Midge 1
Procladius Non-Biting Midge 1
Polypedilum Non-Biting Midges 1
Parametriocnemus 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.