MBSS Site Summary for: PRUN-210-R-2015


Located on LOSTLAND RUN in the Potomac River U N Branch watershed, 8-digit code: 02141005.
This stream was visited in the spring on 4/22/2015 and again in the summer on 7/15/2015.

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 - 4.0 / 5.0
Benthic IBI Fair - 3.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 6,043 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.6 %
Agricultural Land Use 10.8 %
Forested Land Use 80 %


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 17/20 (Optimal)
Velocity/Depth Diversity 16/20 (Optimal)
Pool Quality
Pool Extent = 29 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 70 meters 		16/20 (Optimal)
Shading 65 %
Embeddedness 10 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 7.36
Alkalinity
(acid neutralizing capacity) 		267.7 µeq/L
Dissolved organic carbon (DOC) 1.5596 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
Green Sunfish 5
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
No Exotic Plants Observed
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Epeorus Mayfly 20
Micropsectra Non-Biting Midges 20
Pteronarcys Giant Stonefly 11
Amphinemura Spring Stonefly 10
Chloroperlidae Green Stonefly 7
Baetis Blue-Winged Olive Mayfly 7
Leuctra  Rolled-Winged Stonefly 7
Diplectrona Net-Spinning Caddisfly 6
Hydropsyche Net-Spinning Caddisfly 3
Ephemerella Sulphur Mayfly 2
Leptophlebiidae Pronggilled Mayfly 2
Neoplasta 2
Rhyacophila Free-Living Caddisfly 2
Hexatoma Crane Fly 2
Dolophilodes Medium Evening Sedge Caddisfly 2
Microtendipes Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Rheocricotopus Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Orthocladiinae Midge 1
Ormosia Cranefly 1
Heleniella European Non-Biting Midge 1
Ceratopogonidae 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.