MBSS Site Summary for: LANG-115-R-2016

Site Photos

Field photo showing stream conditions at site LANG-115-R-2016_midpoint downstream (Opens in a new window) Field photo showing stream conditions at site LANG-115-R-2016_midpoint upstream (Opens in a new window)

Located on UT West Fork Langford Creek in the Langford Creek watershed, 8-digit code: 02130506.
This stream was visited in the spring on 3/24/2016 and again in the summer on 8/10/2016.

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.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 193 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 9.9 %
Agricultural Land Use 63.1 %
Forested Land Use 20.2 %


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 8/20 (Marginal)
Velocity/Depth Diversity 4/20 (Poor)
Pool Quality
Pool Extent = 61 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 38 meters 		9/20 (Marginal)
Shading 95 %
Embeddedness 95 %
The embeddedness, a measure of silt on the stream bottom, was 95%. This is relatively high, and may exclude some biota.


Stream Water Quality:
pH (lab) 5.97
Alkalinity
(acid neutralizing capacity) 		189.8 µeq/L
Dissolved organic carbon (DOC) 1.756 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 178
Eastern Mosquitofish 75
Green Sunfish 6
Tessellated Darter 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Fowler's Toad
Gray Treefrog
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Stiltgrass
Multiflora Rose
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Rheocricotopus Non-Biting Midges 30
Caecidotea Isopod 13
Thienemannimyia Group Non-Biting Midges 11
Paraphaenocladius Non-Biting Midges 8
Synurella Amphipod 8
Micropsectra Non-Biting Midges 7
Orthocladius Non-Biting Midges 6
Hydrobaenus Midge 6
Chrysops Deerfly 5
Ceratopogonidae Biting Midge 5
Simulium Black Fly 5
Isotomurus Elongate-Bodied Springtail 4
Trissopelopia Non-Biting Midges 4
Diplocladius Non-Biting Midges 3
Tanypodinae Non-Biting Midges 2
Tanytarsus Non-Biting Midges 2
Apsectrotanypus Non-Biting Midges 2
Corynoneura Non-Biting Midges 2
Stegopterna Black Fly 2
Pseudolimnophila Crane Fly 2
Molanna 2
Stygobromus Amphipod 1
Bezzia Biting Midge 1
Tipula Crane Fly 1
Procladius Non-Biting Midge 1
Nigronia Megaloptera (Dark Fishfly) 1
Limnephilidae Northern Casemaker Caddisfly 1
Parametriocnemus 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.