MBSS Site Summary for: DO-S-003-202-95


Located on DAVIS MILLPOND BR in the Marshyhope Creek watershed, 8-digit code: 02130306.
This stream was visited in the spring on 3/8/1995 and again in the summer on 6/19/1995.

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 Good - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,732 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 0.1 %
Agricultural Land Use 70.5 %
Forested Land Use 29.3 %


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 13/20 (Suboptimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		14/20 (Suboptimal)
Riffle Quality 15/20 (Suboptimal)
Shading 85 %
Embeddedness 80 %
The embeddedness, a measure of silt on the stream bottom, was 80%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 18.7 ° C
Dissolved oxygen (DO) 8.4 mg/L
pH (lab) 6.33
Conductivity 149 µmho/cm
Alkalinity
(acid neutralizing capacity) 		103.1 µeq/L
Dissolved organic carbon (DOC) 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 16 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Tessellated Darter 127
Eastern Mudminnow 77
American Eel 72
Blue Ridge Sculpin 54
Least Brook Lamprey 11
Pirate Perch 10
Tadpole Madtom 8
Creek Chubsucker 6
Chain Pickerel 3
Golden Shiner 3
Redfin Pickerel 3
Brown Bullhead 2
Redbreast Sunfish 2
Bluegill 1
Margined Madtom 1
Yellow Bullhead 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Watersnake
Pickerel Frog

Crayfish:
Cambarus

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Tanytarsus Non-Biting Midges 20
Stenonema Flatheaded Mayfly 11
Thienemannimyia Non-Biting Midges 10
Tribelos Non-Biting Midges 8
Corynoneura Non-Biting Midges 8
Oulimnius Riffle Beetle 7
Zavrelimyia Non-Biting Midges 6
Thienemanniella Non-Biting Midges 5
Nigronia Megaloptera (Dark Fishfly) 5
Promoresia Riffle Beetle 4
Acerpenna Tiny Blue-Winged Olive Mayflies 4
Isoperla Stripetail Stonefly 3
Lype Net Tube Caddisfly 3
Pycnopsyche Great Autumn Brown Sedge Caddisfly 3
Chrysops Deerfly 2
Heterotrissocladius European Non-Biting Midge 2
Anchytarsus Beetle 2
Procladius Non-Biting Midge 2
Sweltsa Stonefly 2
Amphinemura Spring Stonefly 1
Polycentropus Tube Maker Caddisfly 1
Probezzia Biting Midges 1
Neophylax Caddisfly 1
Calopteryx Damselfly 1
Ptilostomis Giant Casemaker Caddisfly 1
Caecidotea Isopod 1
Orthocladius Non-Biting Midges 1
Cheumatopsyche Net-Spinning Caddisfly 1
Paracladopelma Non-Biting Midge 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.