MBSS Site Summary for: CORS-108-R-2000

Site Photos

Field photo showing stream conditions at site CORS-108-R-2000-01 (Opens in a new window) Field photo showing stream conditions at site CORS-108-R-2000-02 (Opens in a new window)

Located on THREE BRIDGES BR UT1 in the Corsica River watershed, 8-digit code: 02130507.
This stream was visited in the spring on 4/3/2000 and again in the summer on 8/2/2000.

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 - 4.0 / 5.0
Benthic IBI Good - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,766 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 0.6 %
Agricultural Land Use 73.2 %
Forested Land Use 25.6 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = 64 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 11 meters 		11/20 (Suboptimal)
Shading 90 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 22.6 ° C
Dissolved oxygen (DO) 6.8 mg/L
pH (lab) 7.43
Conductivity 240 µmho/cm
Alkalinity
(acid neutralizing capacity) 		839 µeq/L
Dissolved organic carbon (DOC) 7.2 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
Tessellated Darter 180
Eastern Mudminnow 52
Fallfish 34
Pirate Perch 31
American Eel 21
Bluegill 17
Creek Chubsucker 14
Least Brook Lamprey 12
Redfin Pickerel 3
Brown Bullhead 2
Pumpkinseed 2
White Sucker 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Caecidotea Isopod 19
Pisidiidae Pill Clam 9
Rheocricotopus Non-Biting Midges 8
Acerpenna Tiny Blue-Winged Olive Mayflies 7
Eurylophella Mayfly 5
Stenonema Flatheaded Mayfly 5
Neophylax Caddisfly 5
Leptophlebiidae Pronggilled Mayfly 4
Polypedilum Non-Biting Midges 4
Conchapelopia Non-Biting Midges 3
Dubiraphia Riffle Beetle 3
Gammarus Amphipod 3
Stenacron Mayfly 3
Tanytarsus Non-Biting Midges 3
Paratendipes European Non-Biting Midge 2
Cheumatopsyche Net-Spinning Caddisfly 2
Ablabesmyia Non-Biting Midge 2
Stenelmis Beetle 2
Amphipoda Scud 2
Isoperla Stripetail Stonefly 2
Ephemerella Sulphur Mayfly 2
Psephenus Water Penny 2
Dytiscidae Predaceous Diving Beetle 2
Stempellinella Non-Biting Midges 2
Potthastia Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Microtendipes Non-Biting Midges 1
Nanocladius Non-Biting Midges 1
Bezzia Biting Midge 1
Prosimulium Black Fly 1
Pseudolimnophila Crane Fly 1
Helichus Beetle 1
Nyctiophylax 1
Physa Air-Breathing Freshwater Snail 1
Paramerina Non-Biting Midge 1
Xylotopus Midge 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.