MBSS Site Summary for: GILB-103-R-2009

Site Photos

Field photo showing stream conditions at site GILB-103-R-2009-1 (Opens in a new window) Field photo showing stream conditions at site GILB-103-R-2009-2 (Opens in a new window)

Located on UT Gilbert Swamp Run in the Gilbert Swamp watershed, 8-digit code: 02140107.
This stream was visited in the spring on 3/12/2009 and again in the summer on 6/16/2009.

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 Poor - 1.9 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 403 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 1.8 %
Agricultural Land Use 41.6 %
Forested Land Use 56.5 %


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

Physical Stream Habitat
Instream Habitat 7/20 (Marginal)
Epifaunal Substrate 6/20 (Marginal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 62 meters 		6/20 (Marginal)
Riffle Quality
Riffle Extent = 21 meters 		7/20 (Marginal)
Shading 90 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 20.2 ° C
Dissolved oxygen (DO) 8.5 mg/L
pH (lab) 6.99
Conductivity 85 µmho/cm
Alkalinity
(acid neutralizing capacity) 		262.1 µeq/L
Dissolved organic carbon (DOC) 4.3106 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
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Green Treefrog
Northern Green 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
Stegopterna Black Fly 36
Prosimulium Black Fly 28
Ostrocerca Stonefly 17
Nemouridae Nemourid Stonefly 9
Caecidotea Isopod 6
Rhyacophila Free-Living Caddisfly 4
Chironomidae Non-Biting Midge 2
Capniidae Small Winter Stonefly 2
Amphinemura Spring Stonefly 1
Orthocladius Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Tvetenia Non-Biting Midges 1
Stygobromus Amphipod 1
Synurella Amphipod 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.