MBSS Site Summary for: GILB-108-R-2001

Site Photos

Field photo showing stream conditions at site GILB-108-R-2001-25 (Opens in a new window) Field photo showing stream conditions at site GILB-108-R-2001-26 (Opens in a new window) Field photo showing stream conditions at site GILB-108-R-2001-27 (Opens in a new window)

Located on GILBERT CR UT1 in the Gilbert Swamp watershed, 8-digit code: 02140107.
This stream was visited in the spring on 3/7/2001 and again in the summer on 6/19/2001.

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 - 3.0 / 5.0
Benthic IBI Fair - 3.6 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 30 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 4 %
Agricultural Land Use 44 %
Forested Land Use 53 %


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

Physical Stream Habitat
Instream Habitat 18/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 41 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 28 meters 		10/20 (Marginal)
Shading 95 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 20.2 ° C
Dissolved oxygen (DO) 7.9 mg/L
pH (lab) 5.81
Conductivity 90 µmho/cm
Alkalinity
(acid neutralizing capacity) 		46 µeq/L
Dissolved organic carbon (DOC) 3.6 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 50
Eastern Mudminnow 28
Least Brook Lamprey 7
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Parametriocnemus Non-Biting Midges 26
Stegopterna Black Fly 18
Simulium Black Fly 9
Amphinemura Spring Stonefly 6
Conchapelopia Non-Biting Midges 5
Diplectrona Net-Spinning Caddisfly 4
Zavrelimyia Non-Biting Midges 4
Corynoneura Non-Biting Midges 3
Heterotrissocladius European Non-Biting Midge 3
Pycnopsyche Great Autumn Brown Sedge Caddisfly 2
Dicranota Hairy-Eyed Cranefly 2
Prosimulium Black Fly 2
Micropsectra Non-Biting Midges 2
Tipulidae Cranefly 2
Dolophilodes Medium Evening Sedge Caddisfly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Hemerodromia Tiny Fly 2
Leptophlebiidae Pronggilled Mayfly 2
Leptophlebia Pronggilled Mayfly 1
Rheosmittia Non-Biting Midges 1
Hexatoma Crane Fly 1
Spirosperma Aquatic Oligochaete Worm 1
Tubificidae Aquatic Worm 1
Gordiidae Horsehair Worm 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.