MBSS Site Summary for: CORS-106-X-2005


Located on Mill Stream Branch UT1 in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 4/27/2005 and again in the summer on 8/25/2005.

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 Good - 4.1 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area No data available 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 No data available
Agricultural Land Use No data available
Forested Land Use No data available


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 12/20 (Suboptimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = 40 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 35 meters 		12/20 (Suboptimal)
Shading 90 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 17.5 ° C
Dissolved oxygen (DO) 6.7 mg/L
pH (lab) 6.71
Conductivity 227 µmho/cm
Alkalinity
(acid neutralizing capacity) 		699.4408 µeq/L
Dissolved organic carbon (DOC) 7.2613 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 12 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Bluegill 85
Tessellated Darter 31
Eastern Mudminnow 30
Pumpkinseed 23
Redfin Pickerel 20
American Eel 15
Golden Shiner 14
Creek Chubsucker 13
Fallfish 12
Largemouth Bass 3
Brown Bullhead 2
White Sucker 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Fowler's Toad
Northern Green Frog
Pickerel Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Caecidotea Isopod 34
Gammarus Amphipod 21
Micropsectra Non-Biting Midges 17
Orthocladius Non-Biting Midges 7
Parametriocnemus Non-Biting Midges 4
Tvetenia Non-Biting Midges 3
Stenelmis Beetle 3
Simulium Black Fly 3
Neophylax Caddisfly 2
Chironomini Non-Biting Midge 2
Chironomus Non-Biting Midges 2
Thienemannimyia group Non-Biting Midges 2
Pseudolimnophila Crane Fly 1
Stenonema Flatheaded Mayfly 1
Dicranota Hairy-Eyed Cranefly 1
Anchytarsus Beetle 1
Orthocladiinae Midge 1
Pisidiidae Pill Clam 1
Dytiscidae Predaceous Diving Beetle 1
Acentrella Tiny Blue-Winged Olive Mayflies 1
Polypedilum Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Thienemanniella 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.