MBSS Site Summary for: LANG-102-B-2007

Site Photos

Field photo showing stream conditions at site LANG-102-B-2007-1 (Opens in a new window) Field photo showing stream conditions at site LANG-102-B-2007-2 (Opens in a new window)

Located on West Fork Langford Creek UT2 in the Langford Creek watershed, 8-digit code: 02130506.
This stream was visited in the spring on 3/28/2007 and again in the summer on 8/1/2007.

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 - 2.0 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 162 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 %
Agricultural Land Use 91.5 %
Forested Land Use 4.9 %


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

Physical Stream Habitat
Instream Habitat 7/20 (Marginal)
Epifaunal Substrate 3/20 (Poor)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 65 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 10 meters 		6/20 (Marginal)
Shading 95 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 14.8 ° C
Dissolved oxygen (DO) 2.2 mg/L
Dissolved oxygen levels measured in the stream were very low (2.2 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 5.77
Conductivity 128 µmho/cm
Alkalinity
(acid neutralizing capacity) 		360.8 µeq/L
Dissolved organic carbon (DOC) 2.46 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluegill 100
Eastern Mudminnow 35
Brown Bullhead 23
Golden Shiner 3
American Eel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Common Five-Lined Skink
Eastern Painted Turtle
Fowler's Toad
Northern Green Frog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Thienemannimyia group Non-Biting Midges 22
Phaenopsectra Non-Biting Midges 12
Physa Air-Breathing Freshwater Snail 8
Dicrotendipes Non-Biting Midges 7
Paratanytarsus Non-Biting Midges 7
Polypedilum Non-Biting Midges 6
Parachironomus 5
Menetus Air Breathing Freshwater Snail 4
Glyptotendipes 4
Kiefferulus 4
Musculium Fingernail Clam 4
Hydroporus Water Beetle 4
Scirtidae Marsh Beetle 3
Bezzia Biting Midge 2
Naididae Aquatic Worm 2
Corixidae Water Boatman 2
Cricotopus Non-Biting Midges 2
Limnephilidae Northern Casemaker Caddisfly 1
Libellulidae Skimmer Dragonfly 1
Tubificidae Aquatic Worm 1
Synurella Amphipod 1
Enchytraeidae Aquatic Worm 1
Tipulidae Cranefly 1
Isotomurus Elongate-Bodied Springtail 1
Caecidotea Isopod 1
Limnophyes Non-Biting Midge 1
Micropsectra 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.