MBSS Site Summary for: ZEKI-101-X-2015


Located on KERRICK SWAMP UT in the Zekiah Swamp watershed, 8-digit code: 02140108.
This stream was visited in the spring on 4/9/2015 and again in the summer on 6/15/2015.

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 - 3.7 / 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 576 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 36.5 %
Agricultural Land Use 13.1 %
Forested Land Use 44.3 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 51 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 26 meters 		7/20 (Marginal)
Shading 85 %
Embeddedness 50 %


Stream Water Quality:
pH (lab) 6.63
Alkalinity
(acid neutralizing capacity) 		235.1 µeq/L
Dissolved organic carbon (DOC) 7.1746 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 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 46
Eastern Mudminnow 17
Tessellated Darter 15
Creek Chubsucker 12
Fallfish 9
Pumpkinseed 5
American Eel 2
Rosyside Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Cope's Gray Treefrog
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
Cambarus bartonii bartonii
Cambarus diogenes
Orconectes limosus

Exotic Plants:
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Acerpenna Tiny Blue-Winged Olive Mayflies 19
Polypedilum Non-Biting Midges 9
Zavrelimyia Non-Biting Midges 7
Caecidotea Isopod 6
Neophylax Caddisfly 5
Leuctra  Rolled-Winged Stonefly 5
Physa Air-Breathing Freshwater Snail 5
Orthocladius Non-Biting Midges 5
Amphinemura Spring Stonefly 5
Rheocricotopus Non-Biting Midges 4
Lype Net Tube Caddisfly 4
Diplectrona Net-Spinning Caddisfly 4
Ablabesmyia Non-Biting Midge 3
Ceratopogonidae Biting Midge 3
Prosimulium Black Fly 3
Tanypodinae Non-Biting Midges 3
Isoperla Stripetail Stonefly 3
Ironoquia Northern Caddisfly 3
Oulimnius Riffle Beetle 2
Eukiefferiella Non-Biting Midges 2
Stenelmis Beetle 2
Simulium Black Fly 1
Pseudolimnophila Crane Fly 1
Clioperla Green-Winged Stonefly 1
Stilocladius Midge 1
Procladius Non-Biting Midge 1
Corynoneura Non-Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Paratanytarsus Non-Biting Midges 1
Phaenopsectra Non-Biting Midges 1
Thienemanniella Non-Biting Midges 1
Thienemannimyia Group Non-Biting Midges 1
Trissopelopia Non-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.