MBSS Site Summary for: CORS-105-X-2006


Located on Three Bridges Branch UT2 in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 4/4/2006 and again in the summer on 8/2/2006.

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 N R
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 784 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 3 %
Agricultural Land Use 67 %
Forested Land Use 29 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


Stream Water Quality:
pH (lab) 7.26
Alkalinity
(acid neutralizing capacity) 		1013.7 µeq/L
Dissolved organic carbon (DOC) 12.9817 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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Northern Spring Peeper

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Bezzia Biting Midge 45
Polypedilum Non-Biting Midges 12
Physa Air-Breathing Freshwater Snail 11
Ischnura 10
Musculium Fingernail Clam 7
Pseudosuccinea Air Breathing Freshwater Snail 6
Tubificidae Aquatic Worm 5
Peltodytes Crawling Water Beetle 3
Pachydiplax 3
Gyraulus White Ramshorn Freshwater Snail 3
Paratendipes European Non-Biting Midge 2
Plathemis Long-Tailed Skimmer Dragonfly 2
Ablabesmyia Non-Biting Midge 2
Chaetocladius Non-Biting Midges 2
Pseudorthocladius Non-Biting Midges 2
Ferrissia Small Air-Breathing Freshwater Limpets 2
Hydroporus Water Beetle 2
Tropisternus Water Scavenger Beetle 1
Tanypodinae Non-Biting Midges 1
Scirtidae Marsh Beetle 1
Menetus Air Breathing Freshwater Snail 1
Stagnicola Air Breathing Freshwater Snail 1
Culicoides 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.