MBSS Site Summary for: GILB-301-X-2016

Site Photos

Field photo showing stream conditions at site GILB-301-X-2016-MidpointDownstream (Opens in a new window) Field photo showing stream conditions at site GILB-301-X-2016-MidpointUpstream (Opens in a new window)

Located on Gilbert Swamp Run in the Gilbert Swamp watershed, 8-digit code: 02140107.
This stream was visited in the spring on 3/29/2016 and again in the summer on 6/15/2016.

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 Good - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,559 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 15.4 %
Agricultural Land Use 27.2 %
Forested Land Use 44.2 %


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 16/20 (Optimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 56 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 19 meters 		16/20 (Optimal)
Shading 65 %
Embeddedness 45 %


Stream Water Quality:
No water quality measurements available for this site.

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
American Eel 54
Fallfish 52
Margined Madtom 24
Redbreast Sunfish 14
Pumpkinseed 12
Swallowtail Shiner 7
Bluegill 5
Least Brook Lamprey 3
Tessellated Darter 3
Eastern Mudminnow 2
Largemouth Bass 1
Tadpole Madtom 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Fowler's Toad
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
Orconectes limosus

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Haploperla Green Stonefly 24
Orthocladius Non-Biting Midges 15
Ephemerella Sulphur Mayfly 10
Acerpenna Tiny Blue-Winged Olive Mayflies 6
Cheumatopsyche Net-Spinning Caddisfly 6
Simulium Black Fly 5
Stenelmis Beetle 4
Plauditus Tiny Blue-Winged Olive Mayflies 4
Isoperla Stripetail Stonefly 4
Orthocladiinae Midge 4
Rheocricotopus Non-Biting Midges 3
Ancyronyx Spider Riffle Beetle 3
Hydropsyche Net-Spinning Caddisfly 3
Parametriocnemus Non-Biting Midges 3
Eukiefferiella Non-Biting Midges 2
Maccaffertium March Brown And Cahill Mayfly 2
Macronychus Riffle Beetle 2
Tanytarsus Non-Biting Midges 2
Rheotanytarsus Non-Biting Midges 2
Polypedilum Non-Biting Midges 2
Stempellinella Non-Biting Midges 1
Thienemannimyia Group Non-Biting Midges 1
Psephenus Water Penny 1
Prosimulium Black Fly 1
Hexatoma Crane Fly 1
Isotomurus Elongate-Bodied Springtail 1
Stenochironomus European Non-Biting Midge 1
Chloroperlidae Green Stonefly 1
Microtendipes Non-Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Chironomini Non-Biting Midge 1
Corynoneura 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.