MBSS Site Summary for: GILB-112-R-2001

Site Photos

Field photo showing stream conditions at site GILB-112-R-2001-5 (Opens in a new window) Field photo showing stream conditions at site GILB-112-R-2001-6 (Opens in a new window) Field photo showing stream conditions at site GILB-112-R-2001-7 (Opens in a new window)

Located on FORD RUN in the Gilbert Swamp watershed, 8-digit code: 02140107.
This stream was visited in the spring on 3/1/2001 and again in the summer on 6/12/2001.

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 Poor - 1.0 / 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 139 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 8 %
Agricultural Land Use 19 %
Forested Land Use 72 %


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

Physical Stream Habitat
Instream Habitat 9/20 (Marginal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 50 meters 		6/20 (Marginal)
Riffle Quality
Riffle Extent = 18 meters 		7/20 (Marginal)
Shading 97 %
Embeddedness 12 %


Stream Water Quality:
Water temperature 18.3 ° C
Dissolved oxygen (DO) 6.9 mg/L
pH (lab) 6.36
Conductivity 70 µmho/cm
Alkalinity
(acid neutralizing capacity) 		64.4 µeq/L
Dissolved organic carbon (DOC) 1.9 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 5
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Eastern Box Turtle
Fowler's Toad
Northern Green Frog
Northern Two-Lined Salamander
Pickerel 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
Synurella Amphipod 26
Prosimulium Black Fly 23
Limnephilidae Northern Casemaker Caddisfly 19
Nemouridae Nemourid Stonefly 13
Caecidotea Isopod 6
Stegopterna Black Fly 5
Isotomurus Elongate-Bodied Springtail 5
Amphinemura Spring Stonefly 5
Parametriocnemus Non-Biting Midges 4
Eukiefferiella Non-Biting Midges 3
Leuctridae Rolledwinged Stonefly 2
Orthocladiinae Midge 2
Diplectrona Net-Spinning Caddisfly 2
Tipula Crane Fly 2
Phagocata 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Cricotopus/Orthocladius Midge 1
Hexatoma Crane Fly 1
Polypedilum Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 1
Allocapnia Small Winter Stonefly 1
Cordulegaster Spiketail Dragonfly 1
Hemerodromia Tiny Fly 1
Polycentropodidae Trupetnet And Tubemaking Caddisfly 1
Hydroporus Water Beetle 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.