MBSS Site Summary for: ZEKI-117-R-2001

Site Photos

Field photo showing stream conditions at site ZEKI-117-R-2001-47 (Opens in a new window) Field photo showing stream conditions at site ZEKI-117-R-2001-48 (Opens in a new window) Field photo showing stream conditions at site ZEKI-117-R-2001-49 (Opens in a new window) Field photo showing stream conditions at site ZEKI-117-R-2001-50 (Opens in a new window) Field photo showing stream conditions at site ZEKI-117-R-2001-51 (Opens in a new window) Field photo showing stream conditions at site ZEKI-117-R-2001-52 (Opens in a new window) Field photo showing stream conditions at site ZEKI-117-R-2001-53 (Opens in a new window)

Located on HERBERT 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 6/20/2001.

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 Fair - 3.0 / 5.0
Benthic IBI Good - 5.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 398 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 5 %
Agricultural Land Use 47 %
Forested Land Use 47 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 7/20 (Marginal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 25 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 75 meters 		15/20 (Suboptimal)
Shading 98 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 23.4 ° C
Dissolved oxygen (DO) 7.6 mg/L
pH (lab) 6.83
Conductivity 70 µmho/cm
Alkalinity
(acid neutralizing capacity) 		161.1 µeq/L
Dissolved organic carbon (DOC) 4.7 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 7 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Tessellated Darter 13
Eastern Mudminnow 10
Fallfish 6
American Eel 1
Bluegill 1
Largemouth Bass 1
Redfin Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Northern Green Frog
Rough Greensnake

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 30
Pisidiidae Pill Clam 14
Acerpenna Tiny Blue-Winged Olive Mayflies 8
Limnephilidae Northern Casemaker Caddisfly 8
Gammarus Amphipod 6
Stenonema Flatheaded Mayfly 5
Conchapelopia Non-Biting Midges 5
Caecidotea Isopod 4
Prosimulium Black Fly 4
Crangonyx Amphipod 3
Synurella Amphipod 3
Stenelmis Beetle 2
Physa Air-Breathing Freshwater Snail 2
Cheumatopsyche Net-Spinning Caddisfly 2
Isotomurus Elongate-Bodied Springtail 2
Cryptochironomus Non-Biting Midges 1
Orthocladiinae A Non-Biting Midges 1
Phaenopsectra Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Tanytarsini Non-Biting Midges 1
Stegopterna Black Fly 1
Probezzia Biting Midges 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.