MBSS Site Summary for: ISLE-120-R-2001

Site Photos

Field photo showing stream conditions at site ISLE-120-R-2001-1 (Opens in a new window) Field photo showing stream conditions at site ISLE-120-R-2001-2 (Opens in a new window)

Located on CRIPPEN BR in the Isle of Wight Bay watershed, 8-digit code: 02130103.
This stream was visited in the spring on 3/9/2001 and again in the summer on 6/11/2001.

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 Fair - 3.7 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 361 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 11 %
Agricultural Land Use 59 %
Forested Land Use 28 %


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

Physical Stream Habitat
Instream Habitat 11/20 (Suboptimal)
Epifaunal Substrate 7/20 (Marginal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 3 meters 		2/20 (Poor)
Shading 30 %
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 17.8 ° C
Dissolved oxygen (DO) 6.7 mg/L
pH (lab) 6.37
Conductivity 230 µmho/cm
Alkalinity
(acid neutralizing capacity) 		311.2 µeq/L
Dissolved organic carbon (DOC) 6.8 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 55
Redfin Pickerel 28
Pirate Perch 15
American Eel 1
Golden Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Watersnake

Crayfish:
Procambarus

Exotic Plants:
Japanese Honeysuckle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 19
Caecidotea Isopod 17
Menetus Air Breathing Freshwater Snail 13
Stegopterna Black Fly 11
Synurella Amphipod 10
Crangonyx Amphipod 9
Musculium Fingernail Clam 6
Platycentropus 4
Hydroporus Water Beetle 4
Limnephilidae Northern Casemaker Caddisfly 3
Lumbriculidae Worm 2
Peltodytes Crawling Water Beetle 2
Chrysops Deerfly 1
Ptilostomis Giant Casemaker Caddisfly 1
Procladius Non-Biting Midge 1
Diplocladius Non-Biting Midges 1
Sympotthastia 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.