MBSS Site Summary for: LANG-229-A-2007

Site Photos

Field photo showing stream conditions at site LANG-229-A-2007-1 (Opens in a new window) Field photo showing stream conditions at site LANG-229-A-2007-2 (Opens in a new window)

Located on East Fork Langford Creek in the Langford Creek watershed, 8-digit code: 02130506.
This stream was visited in the spring on 3/29/2007 and again in the summer on 6/21/2007.

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 Good - 4.7 / 5.0
Benthic IBI Fair - 3.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,009 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 1.2 %
Agricultural Land Use 86.6 %
Forested Land Use 10.9 %


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

Physical Stream Habitat
Instream Habitat 8/20 (Marginal)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 70 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 5 meters 		11/20 (Suboptimal)
Shading 80 %
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 23.1 ° C
Dissolved oxygen (DO) 5.8 mg/L
pH (lab) 7.24
Conductivity 132 µmho/cm
Alkalinity
(acid neutralizing capacity) 		523.9 µeq/L
Dissolved organic carbon (DOC) 4.735 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 10 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
American Eel 46
Tessellated Darter 20
Bluegill 15
Golden Shiner 9
Pumpkinseed 7
Eastern Mudminnow 6
Brown Bullhead 5
Creek Chubsucker 3
Largemouth Bass 3
Green Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Fowler's Toad
Gray Treefrog
Northern Green Frog
Southern Leopard Frog

Crayfish:
Orconectes limosus

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Polypedilum Non-Biting Midges 25
Thienemannimyia group Non-Biting Midges 20
Cheumatopsyche Net-Spinning Caddisfly 9
Nanocladius Non-Biting Midges 7
Ablabesmyia Non-Biting Midge 5
Orthocladius Non-Biting Midges 4
Musculium Fingernail Clam 4
Diplocladius Non-Biting Midges 3
Tanypodinae Non-Biting Midges 2
Thienemanniella Non-Biting Midges 2
Amnicola Freshwater Snail 2
Physa Air-Breathing Freshwater Snail 2
Lepidoptera Aquatic Moth 1
Bithynia 1
Fossaria Air Breathing Freshwater Snail 1
Caenis Mayfly 1
Coenagrionidae Narrowwinged Damselfly 1
Heptageniidae Flathead Mayfly 1
Rheocricotopus Non-Biting Midges 1
Rheosmittia Non-Biting Midges 1
Chaetocladius Non-Biting Midges 1
Dicrotendipes Non-Biting Midges 1
Pisidiidae Pill Clam 1
Dubiraphia Riffle Beetle 1
Ferrissia Small Air-Breathing Freshwater Limpets 1
Dineutus Whirlygig Beetle 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.