MBSS Site Summary for: ZEKI-012-S-2011

Site Photos

Field photo showing stream conditions at site ZEKI-012-S-2011-1 (Opens in a new window) Field photo showing stream conditions at site ZEKI-012-S-2011-2 (Opens in a new window)

Located on ZEKIAH SWAMP UT in the Zekiah Swamp watershed, 8-digit code: 02140108.
This stream was visited in the spring on 4/13/2011 and again in the summer on 6/29/2011.

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 - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 308 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 18 %
Forested Land Use 80.2 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 43 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 32 meters 		15/20 (Suboptimal)
Shading 90 %
Embeddedness 25 %


Stream Water Quality:
pH (lab) 6.585
Alkalinity
(acid neutralizing capacity) 		126.6 µeq/L
Dissolved organic carbon (DOC) 3.6735 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 4 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 77
Least Brook Lamprey 16
American Eel 1
Redfin Pickerel 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Japanese Stiltgrass
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 22
Leuctra  Rolled-Winged Stonefly 13
Tanytarsus Non-Biting Midges 10
Rheocricotopus Non-Biting Midges 7
CHLOROPERLIDAE Green Stonefly 7
Neophylax Caddisfly 4
Hexatoma Crane Fly 3
CERATOPOGONIDAE Biting Midge 3
Psilotreta Mortarjoint Casemaker Caddisfly 3
Diplectrona Net-Spinning Caddisfly 3
Parametriocnemus Non-Biting Midges 3
Polypedilum Non-Biting Midges 3
Micropsectra Non-Biting Midges 2
Optioservus Riffle Beetle 2
BAETIDAE Small Minnow Mayfly 2
Ephemerella Sulphur Mayfly 2
Acerpenna Tiny Blue-Winged Olive Mayflies 2
Caecidotea Isopod 2
GOMPHIDAE Clubtail Dragonfly 2
Stilocladius Midge 2
Ameletus Combmouthed Minnow Mayfly 1
Pseudolimnophila Crane Fly 1
SIMULIIDAE Black Fly 1
Crangonyx Amphipod 1
Stenelmis Beetle 1
Lepidostoma Little Brown Sedge Caddisfly 1
LEPTOCERIDAE Longhorned Casemaker Caddisfly 1
Orthocladiinae Midge 1
Paramerina Non-Biting Midge 1
Corynoneura Non-Biting Midges 1
Hydrobius Water Scavenger Beetle 1
Rheotanytarsus Non-Biting Midges 1
Stempellinella Non-Biting Midges 1
Orthocladius Non-Biting Midges 1
Thienemannimyia Group Non-Biting Midges 1
Trissopelopia Non-Biting Midges 1
PISIDIIDAE Pill Clam 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.