MBSS Site Summary for: LANG-204-R-2002

Site Photos

Field photo showing stream conditions at site LANG-204-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site LANG-204-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 3/14/2002 and again in the summer on 6/5/2002.

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 Good - 4.7 / 5.0
Benthic IBI Fair - 3.9 / 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 3,477 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 85 %
Forested Land Use 12 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 54 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 21 meters 		16/20 (Optimal)
Shading 55 %
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 22.5 ° C
Dissolved oxygen (DO) 5 mg/L
pH (lab) 7.28
Conductivity 140 µmho/cm
Alkalinity
(acid neutralizing capacity) 		665.2 µeq/L
Dissolved organic carbon (DOC) 3.5 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 16 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
American Eel 189
Tessellated Darter 172
Eastern Mudminnow 108
Bluegill 68
Brown Bullhead 32
Golden Shiner 26
Pumpkinseed 26
Creek Chubsucker 16
Spottail Shiner 12
Eastern Mosquitofish 10
Banded Killifish 4
Redfin Pickerel 4
Black Crappie 2
Satinfin Shiner 2
Fallfish 1
Largemouth Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog
Northern Watersnake
Pickerel Frog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus Non-Biting Midges 24
Orthocladius Non-Biting Midges 19
Diplocladius Non-Biting Midges 6
Gammarus Amphipod 5
Paralauterborniella 4
Nanocladius Non-Biting Midges 4
Rheosmittia Non-Biting Midges 3
Stempellinella Non-Biting Midges 3
Tanytarsus Non-Biting Midges 3
Thienemanniella Non-Biting Midges 3
Polypedilum Non-Biting Midges 2
Prosimulium Black Fly 2
Coenagrionidae Narrowwinged Damselfly 2
Calopteryx Damselfly 2
Parakiefferiella European Non-Biting Midge 1
Stenonema Flatheaded Mayfly 1
Caecidotea Isopod 1
Oecetis Long-Horned Caddisfly 1
Triaenodes Long-Horned Caddisfly 1
Orthocladiinae Midge 1
Culicoides 1
Probezzia Biting Midges 1
Cheumatopsyche Net-Spinning Caddisfly 1
Hydropsyche Net-Spinning Caddisfly 1
Chironomini Non-Biting Midge 1
Clinotanypus Non-Biting Midge 1
Procladius Non-Biting Midge 1
Simulium Black Fly 1
Tipulidae Cranefly 1
Dubiraphia Riffle Beetle 1
Polycentropus Tube Maker Caddisfly 1
Dineutus Whirlygig Beetle 1
Tanypodinae Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Paratanytarsus 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.