MBSS Site Summary for: ZEKI-012-S-2004

Site Photos

Field photo showing stream conditions at site ZEKI-012-S-2004-1 (Opens in a new window) Field photo showing stream conditions at site ZEKI-012-S-2004-2 (Opens in a new window)

Located on ZEKIAH SWAMP RUN in the Zekiah Swamp watershed, 8-digit code: 02140108.
This stream was visited in the spring on 4/14/2004 and again in the summer on 7/19/2004.

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 - 3.3 / 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 304 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 16.3 %
Forested Land Use 82 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 14/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 40 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 35 meters 		12/20 (Suboptimal)
Shading 94 %
Embeddedness 15 %


Stream Water Quality:
Water temperature 21.1 ° C
Dissolved oxygen (DO) 8.3 mg/L
pH (lab) 6.32
Conductivity 63 µmho/cm
Alkalinity
(acid neutralizing capacity) 		77.9 µeq/L
Dissolved organic carbon (DOC) 2.8 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
Eastern Mudminnow 234
Least Brook Lamprey 26
Blacknose Dace 20
Redfin Pickerel 7
Pirate Perch 5
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Red Salamander
Northern Two-Lined Salamander

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
Ephemerella Sulphur Mayfly 24
Leuctra  Rolled-Winged Stonefly 20
Amphinemura Spring Stonefly 13
Eccoptura Yellow Stone Stonefly 11
Lepidostoma Little Brown Sedge Caddisfly 10
Diplectrona Net-Spinning Caddisfly 7
Neophylax Caddisfly 5
Chloroperlidae Green Stonefly 4
Calopteryx Damselfly 2
Wormaldia Fingernet Caddisfly 2
Rheosmittia Non-Biting Midges 2
Tanytarsus Non-Biting Midges 2
Boyeria Spotted Darner Dragonfly 2
Parametriocnemus Non-Biting Midges 2
Acerpenna Tiny Blue-Winged Olive Mayflies 2
Lumbriculidae Worm 1
Polypedilum Non-Biting Midges 1
Cryptochironomus Non-Biting Midges 1
Nigronia Megaloptera (Dark Fishfly) 1
Trissopelopia Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Limnephilidae Northern Casemaker Caddisfly 1
Perlodidae Perlodid Stonefly 1
Elmidae Riffle Beetle 1
Cordulegaster Spiketail Dragonfly 1
Caecidotea Isopod 1
Perlidae Common Stonefly 1
Tipula Crane Fly 1
Chelifera Aquatic Dance Fly 1
Simulium Black Fly 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.