MBSS Site Summary for: PAXM-T23-X-2006


Located on Matoponi Creek in the Patuxent River middle watershed, 8-digit code: 02131102.
This stream was visited in the spring on 4/4/2006 and again in the summer on 6/19/2009.

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 N R
Benthic IBI N R

Land Use

Land use can provide important information for determining stream health.
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Catchment area 11,084 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 5 %
Agricultural Land Use 36 %
Forested Land Use 55 %


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

Physical Stream Habitat
Instream Habitat not sampled
Epifaunal Substrate not sampled
Velocity/Depth Diversity not sampled
Pool Quality not sampled
Riffle Quality not sampled
Shading not sampled
Embeddedness not sampled


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 17 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Golden Shiner 46
Brown Bullhead 25
Yellow Perch 19
White Perch 15
Pumpkinseed 13
Banded Killifish 10
Spottail Shiner 8
Goldfish 7
Creek Chubsucker 6
American Eel 4
Bluegill 1
Channel Catfish 1
Gizzard Shad 1
Green Sunfish 1
Largemouth Bass 1
Satinfin Shiner 1
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Tubificidae Aquatic Worm 21
Tribelos Non-Biting Midges 14
Quistradrilus 9
Tanytarsus Non-Biting Midges 7
Dicrotendipes Non-Biting Midges 6
Procladius Non-Biting Midge 6
Polypedilum Non-Biting Midges 5
Valvata 4
Cryptotendipes 4
Gammarus Amphipod 3
Paratendipes European Non-Biting Midge 2
Musculium Fingernail Clam 2
Caenis Mayfly 2
Clinotanypus Non-Biting Midge 2
Cryptochironomus Non-Biting Midges 1
Oecetis Long-Horned Caddisfly 1
Menetus Air Breathing Freshwater Snail 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.