MBSS Site Summary for: FR-P-409-210-96


Located on ADDISON RUN in the Lower Monocacy River watershed, 8-digit code: 02140302.
This stream was visited in the spring on 3/6/1996 and again in the summer on 6/6/1996.

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 - 1.7 / 5.0
Benthic IBI Poor - 2.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 1,584 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 0.1 %
Agricultural Land Use 63.5 %
Forested Land Use 36.1 %


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 3/20 (Poor)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		7/20 (Marginal)
Riffle Quality 7/20 (Marginal)
Shading 10 %
Embeddedness 55 %
The embeddedness, a measure of silt on the stream bottom, was 55%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 14 ° C
Dissolved oxygen (DO) 11.6 mg/L
pH (lab) 7.92
Conductivity 248 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1519 µeq/L
Dissolved organic carbon (DOC) 2.9 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 14
Creek Chub 6
Banded Killifish 5
White Sucker 2
Yellow Bullhead 2
Bluntnose Minnow 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 71
Ameletus Combmouthed Minnow Mayfly 7
Cricotopus/Orthocladius Midge 4
Hydropsyche Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Sympotthastia Non-Biting Midges 2
Paracapnia Small Winter Stonefly 1
Acerpenna Tiny Blue-Winged Olive Mayflies 1
Rheotanytarsus Non-Biting Midges 1
Physa Air-Breathing Freshwater Snail 1
Crangonyx Amphipod 1
Conchapelopia Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Tipula Crane Fly 1
Girardia Freshwater Flatworm 1
Dicranota Hairy-Eyed Cranefly 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.