MBSS Site Summary for: PTOB-002-S-2011

Site Photos

Field photo showing stream conditions at site PTOB-002-S-2011-1 (Opens in a new window) Field photo showing stream conditions at site PTOB-002-S-2011-2 (Opens in a new window)

Located on HOGHOLE RUN in the Port Tobacco River watershed, 8-digit code: 02140109.
This stream was visited in the spring on 3/9/2011 and again in the summer on 6/15/2011.

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 Good - 4.3 / 5.0
Benthic IBI Good - 4.4 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 2,329 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.4 %
Agricultural Land Use 25.5 %
Forested Land Use 70 %


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 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 62 meters 		18/20 (Optimal)
Riffle Quality
Riffle Extent = 8 meters 		7/20 (Marginal)
Shading 80 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 6.42
Alkalinity
(acid neutralizing capacity) 		53.96 µeq/L
Dissolved organic carbon (DOC) 3.2161 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 90
Blacknose Dace 55
Rosyside Dace 45
Creek Chub 44
Creek Chubsucker 6
Least Brook Lamprey 6
Pumpkinseed 6
Tessellated Darter 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Cricket Frog
Northern Green Frog
Pickerel Frog

Crayfish:
Cambarus bartonii bartonii
Orconectes limosus

Exotic Plants:
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 20
Prostoia Spring Stonefly 19
Amphinemura Spring Stonefly 18
Neophylax Caddisfly 15
Isoperla Stripetail Stonefly 8
CHLOROPERLIDAE Green Stonefly 7
NEMOURIDAE Nemourid Stonefly 5
Oulimnius Riffle Beetle 3
Centroptilum Small Minnow Mayfly 2
Diplectrona Net-Spinning Caddisfly 2
Eukiefferiella Non-Biting Midges 2
Rheotanytarsus Non-Biting Midges 2
PERLODIDAE Perlodid Stonefly 2
Clioperla Green-Winged Stonefly 2
Strophopteryx Early Brown Stonefly 2
SIMULIIDAE Black Fly 1
Stegopterna Black Fly 1
Caecidotea Isopod 1
Psilotreta Mortarjoint Casemaker Caddisfly 1
LEPTOPHLEBIIDAE Pronggilled Mayfly 1
LIMNEPHILIDAE Northern Casemaker Caddisfly 1
Micropsectra Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Allocapnia Small Winter Stonefly 1
LEUCTRIDAE Rolledwinged Stonefly 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.