MBSS Site Summary for: ZEKI-312-R-2001

Site Photos

Field photo showing stream conditions at site ZEKI-312-R-2001-54 (Opens in a new window) Field photo showing stream conditions at site ZEKI-312-R-2001-55 (Opens in a new window) Field photo showing stream conditions at site ZEKI-312-R-2001-56 (Opens in a new window) Field photo showing stream conditions at site ZEKI-312-R-2001-57 (Opens in a new window) Field photo showing stream conditions at site ZEKI-312-R-2001-58 (Opens in a new window) Field photo showing stream conditions at site ZEKI-312-R-2001-59 (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 3/8/2001 and again in the summer on 8/1/2001.

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 - 4.0 / 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 52,936 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 12 %
Agricultural Land Use 26 %
Forested Land Use 59 %


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

Physical Stream Habitat
Instream Habitat 19/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 75 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 70 meters 		16/20 (Optimal)
Shading 85 %
Embeddedness 30 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 19 ° C
Dissolved oxygen (DO) 7.3 mg/L
pH (lab) 6.73
Conductivity 110 µmho/cm
Alkalinity
(acid neutralizing capacity) 		87.3 µeq/L
Dissolved organic carbon (DOC) 3.7 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 16 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 762
Pirate Perch 363
Redfin Pickerel 257
Tessellated Darter 137
American Eel 93
Creek Chubsucker 61
Tadpole Madtom 57
Pumpkinseed 35
Fallfish 19
Rosyside Dace 18
Margined Madtom 17
Bluegill 12
Chain Pickerel 8
Largemouth Bass 8
Least Brook Lamprey 3
Sea Lamprey 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Common Five-Lined Skink
Eastern Box Turtle
Eastern Painted Turtle
Eastern Ratsnake
Northern Green Frog
Northern Two-Lined Salamander
Stinkpot
Wood Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Gammarus Amphipod 13
Cricotopus/Orthocladius Midge 13
Crangonyx Amphipod 11
Triaenodes Long-Horned Caddisfly 7
Leptophlebiidae Pronggilled Mayfly 7
Stempellinella Non-Biting Midges 6
Caecidotea Isopod 5
Plecoptera Stonefly 5
Perlodidae Perlodid Stonefly 5
Larsia Non-Biting Midge 3
Phaenopsectra Non-Biting Midges 2
Rheosmittia Non-Biting Midges 2
Tanytarsus Non-Biting Midges 2
Zavrelimyia Non-Biting Midges 2
Calopteryx Damselfly 2
Stenonema Flatheaded Mayfly 2
Ephemerella Sulphur Mayfly 2
Eurylophella Mayfly 2
Tubificidae Aquatic Worm 1
Corbicula Basket Clam 1
Phylocentropus Caddisfly 1
Limnephilidae Northern Casemaker Caddisfly 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.