MBSS Site Summary for: MILE-212-T-2005


Located on Glebe Creek in the Miles River watershed, 8-digit code: 02130502.
This stream was visited in the spring on 3/22/2005 and again in the summer on 6/9/2005.

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 Poor - 2.7 / 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 914 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 32 %
Agricultural Land Use 49 %
Forested Land Use 11 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 5/20 (Poor)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 72 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 3 meters 		10/20 (Marginal)
Shading 95 %
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 21.1 ° C
Dissolved oxygen (DO) 6 mg/L
pH (lab) 7.55
Conductivity 293 µmho/cm
Alkalinity
(acid neutralizing capacity) 		972.2 µeq/L
Dissolved organic carbon (DOC) 2.9896 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 38
Eastern Mudminnow 31
Fathead Minnow 25
Bluegill 23
Pumpkinseed 9
American Eel 4
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Snapping Turtle
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
Orthocladius Non-Biting Midges 23
Paratanytarsus Non-Biting Midges 10
Thienemanniella Non-Biting Midges 10
Tanytarsus Non-Biting Midges 8
Microtendipes Non-Biting Midges 6
Ablabesmyia Non-Biting Midge 5
Stempellinella Non-Biting Midges 5
Dubiraphia Riffle Beetle 5
Thienemannimyia group Non-Biting Midges 4
Cricotopus Non-Biting Midges 4
Corynoneura Non-Biting Midges 3
Gammarus Amphipod 3
Polypedilum Non-Biting Midges 3
Phaenopsectra Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 2
Calopteryx Damselfly 2
Physa Air-Breathing Freshwater Snail 2
Hydrobaenus Midge 2
Cryptochironomus Non-Biting Midges 1
Molanna 1
Stenochironomus European Non-Biting Midge 1
Heptageniidae Flathead Mayfly 1
Caecidotea Isopod 1
Helichus Beetle 1
Stenelmis Beetle 1
Tabanus Biting Horsefly 1
Pseudolimnophila Crane Fly 1
Rheocricotopus Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Pisidiidae Pill Clam 1
Lumbriculidae Worm 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.