MBSS Site Summary for: CHRI-104-R-2003

Site Photos

Field photo showing stream conditions at site CHRI-104-R-2003-0996 (Opens in a new window) Field photo showing stream conditions at site CHRI-104-R-2003-0997 (Opens in a new window)

Located on PERSIMMON RUN in the Christina River watershed, 8-digit code: 02130607.
This stream was visited in the spring on 4/9/2003 and again in the summer on 8/6/2003.

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 Poor - 2.0 / 5.0
Benthic IBI Poor - 2.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 184 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 22 %
Agricultural Land Use 71 %
Forested Land Use 8 %


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

Physical Stream Habitat
Instream Habitat 2/20 (Poor)
Epifaunal Substrate 1/20 (Poor)
Velocity/Depth Diversity 1/20 (Poor)
Pool Quality
Pool Extent = 15 meters 		1/20 (Poor)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 95 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.
Several measures of instream habitat were considered 'Poor' at this location.


Stream Water Quality:
Water temperature 21.1 ° C
Dissolved oxygen (DO) 1.8 mg/L
Dissolved oxygen levels measured in the stream were very low (1.8 mg/L). Many fishes and other aquatic animals cannot tolerate low levels of oxygen in the water.
pH (lab) 6.51
Conductivity 64 µmho/cm
Alkalinity
(acid neutralizing capacity) 		137.7 µeq/L
Dissolved organic carbon (DOC) 7.3 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Goldfish 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Green Frog

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
Enchytraeidae Aquatic Worm 60
Tubificidae Aquatic Worm 26
Stagnicola Air Breathing Freshwater Snail 13
Lumbriculidae Worm 9
Girardia Freshwater Flatworm 7
Aedes Mosquito 5
Copelatus 2
Physa Air-Breathing Freshwater Snail 2
Sciomyzidae Marsh Fly 1
Tipula Crane Fly 1
Chrysops Deerfly 1
Rheocricotopus Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Thienemannimyia group Non-Biting Midges 1
Noctuidae Owlet Moth 1
Lymnaeidae Pond Snail 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.