MBSS Site Summary for: LANG-218-R-2002

Site Photos

Field photo showing stream conditions at site LANG-218-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site LANG-218-R-2002-2 (Opens in a new window)

Located on EAST FORK LANGFORD CR in the Langford Creek watershed, 8-digit code: 02130506.
This stream was visited in the spring on 4/2/2002 and again in the summer on 6/19/2002.

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 1,542 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 1 %
Agricultural Land Use 90 %
Forested Land Use 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 15/20 (Suboptimal)
Velocity/Depth Diversity 5/20 (Poor)
Pool Quality
Pool Extent = 75 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 18 %
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 19.4 ° C
Dissolved oxygen (DO) 5.7 mg/L
pH (lab) 7.11
Conductivity 160 µmho/cm
Alkalinity
(acid neutralizing capacity) 		624.2 µeq/L
Dissolved organic carbon (DOC) 4 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
Eastern Mosquitofish 500
American Eel 76
Eastern Mudminnow 42
Tessellated Darter 37
Pumpkinseed 15
Bluegill 8
Brown Bullhead 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Painted Turtle
Eastern Snapping Turtle
Northern Green Frog
Southern Leopard Frog

Crayfish:
Cambarus

Exotic Plants:
Japanese Honeysuckle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Hyalella Amphipod 22
Conchapelopia Non-Biting Midges 15
Polypedilum Non-Biting Midges 10
Physa Air-Breathing Freshwater Snail 8
Phaenopsectra Non-Biting Midges 8
Caecidotea Isopod 7
Tanytarsus Non-Biting Midges 6
Caenis Mayfly 5
Clinotanypus Non-Biting Midge 3
Apsectrotanypus Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 1
Paratanytarsus Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Cheumatopsyche Net-Spinning Caddisfly 1
Triaenodes Long-Horned Caddisfly 1
Peltodytes Crawling Water Beetle 1
Stenochironomus European Non-Biting Midge 1
Menetus Air Breathing Freshwater Snail 1
Pseudosuccinea Air Breathing Freshwater Snail 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.